Show the (decimal) value of a number of 1s appended with a 3, then squared
- Task
Show here (on this page) the decimal numbers formed by:
- (n 1's appended by the digit 3) and then square the result, where 0 <= n < 8
- See also
11l
L(i) 0..7 {print(‘( ’(‘1’ * i)‘3 ) ^ 2 = ’(Int64((‘1’ * i)‘3’) ^ 2))}
- Output:
( 3 ) ^ 2 = 9 ( 13 ) ^ 2 = 169 ( 113 ) ^ 2 = 12769 ( 1113 ) ^ 2 = 1238769 ( 11113 ) ^ 2 = 123498769 ( 111113 ) ^ 2 = 12346098769 ( 1111113 ) ^ 2 = 1234572098769 ( 11111113 ) ^ 2 = 123456832098769
Ada
with Ada.Text_Io;
with Ada.Numerics.Big_Numbers.Big_Integers;
procedure Ones_Plus_Three is
use Ada.Numerics.Big_Numbers.Big_Integers;
use Ada.Text_Io;
Root : Big_Natural := 3;
Squared : Big_Natural;
begin
for N in 0 .. 8 loop
Squared := Root**2;
Put (To_String (Root, Width => 12));
Put (" ");
Put (To_String (Squared, Width => 20));
New_Line;
Root := @ + 10**(N + 1);
end loop;
end Ones_Plus_Three;
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769 111111113 12345679432098769
ALGOL 68
Assuming LONG INT is large enough (as in e.g. ALGOL 68G).
BEGIN
LONG INT n := 0;
TO 8 DO
LONG INT n3 = ( n * 10 ) + 3;
print( ( whole( n3, 0 ), " ", whole( n3 * n3, 0 ), newline ) );
n *:= 10 +:= 1
OD
END
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Alternative version that shows the values for higher numbers of ones.
BEGIN
PR precision 250 PR
LONG LONG INT n := 0;
FOR i FROM 0 TO 111 DO
LONG LONG INT n3 = ( n * 10 ) + 3;
IF i > 84 THEN
STRING v := whole( n3 * n3, 0 );
INT pos := 0;
STRING pattern := "123456790";
INT p len := ( UPB pattern - LWB pattern ) + 1;
WHILE string in string( pattern, pos, v ) DO
v := v[ 1 : pos - 1 ] + "A" + v[ pos + p len : ]
OD;
pattern := "987654320";
WHILE string in string( pattern, pos, v ) DO
v := v[ 1 : pos - 1 ] + "Z" + v[ pos + p len : ]
OD;
print( ( whole( i, -3 ), " ", v, newline ) )
FI;
n *:= 10 +:= 1
OD
END
- Output:
As the 111...113^2 values get rather large, the code above replaces "123456790" with "A" and "987654320" with "Z". The number of ones is shown on the left.
85 AAAAAAAAA1234ZZZZZZZZZ98769 86 AAAAAAAAA123460ZZZZZZZZZ98769 87 AAAAAAAAA12345720ZZZZZZZZZ98769 88 AAAAAAAAA1234568320ZZZZZZZZZ98769 89 AAAAAAAAA123456794320ZZZZZZZZZ98769 90 AAAAAAAAAA54320ZZZZZZZZZ98769 91 AAAAAAAAAA1654320ZZZZZZZZZ98769 92 AAAAAAAAAA127654320ZZZZZZZZZ98769 93 AAAAAAAAAA12387654320ZZZZZZZZZ98769 94 AAAAAAAAAA1234ZZZZZZZZZZ98769 95 AAAAAAAAAA123460ZZZZZZZZZZ98769 96 AAAAAAAAAA12345720ZZZZZZZZZZ98769 97 AAAAAAAAAA1234568320ZZZZZZZZZZ98769 98 AAAAAAAAAA123456794320ZZZZZZZZZZ98769 99 AAAAAAAAAAA54320ZZZZZZZZZZ98769 100 AAAAAAAAAAA1654320ZZZZZZZZZZ98769 101 AAAAAAAAAAA127654320ZZZZZZZZZZ98769 102 AAAAAAAAAAA12387654320ZZZZZZZZZZ98769 103 AAAAAAAAAAA1234ZZZZZZZZZZZ98769 104 AAAAAAAAAAA123460ZZZZZZZZZZZ98769 105 AAAAAAAAAAA12345720ZZZZZZZZZZZ98769 106 AAAAAAAAAAA1234568320ZZZZZZZZZZZ98769 107 AAAAAAAAAAA123456794320ZZZZZZZZZZZ98769 108 AAAAAAAAAAAA54320ZZZZZZZZZZZ98769 109 AAAAAAAAAAAA1654320ZZZZZZZZZZZ98769 110 AAAAAAAAAAAA127654320ZZZZZZZZZZZ98769 111 AAAAAAAAAAAA12387654320ZZZZZZZZZZZ98769
Arturo
loop 0..7 'x [
num: to :integer(repeat "1" x) ++ "3"
print [num num^2]
]
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
AWK
BEGIN {
m = 2
for (n = 0; n != 8; ++n) {
m = m * 10 - 17
printf "%u %9u^2 %'20u\n", n, m, m * m
}
}
- Output:
0 3^2 9 1 13^2 169 2 113^2 12,769 3 1113^2 1,238,769 4 11113^2 123,498,769 5 111113^2 12,346,098,769 6 1111113^2 1,234,572,098,769 7 11111113^2 123,456,832,098,769
BASIC
BASIC256
for n = 0 to 7
m = make13(n) ^ 2
print rjust(string(make13(n)), 9); "^2 = "; ljust(string(m), 15)
next n
end
function make13 (n)
t = 0
while n
t = 10 * (t + 1)
n -= 1
end while
return t + 3
end function
Chipmunk Basic
100 cls
110 sub make13(n)
120 t = 0
130 while n
140 t = 10*(t+1)
150 n = n-1
160 wend
170 make13 = t+3
180 end sub
190 for n = 0 to 7
200 m = make13(n)^2
210 print using "#########";make13(n);"^2 = ";
220 print using "###############";m
230 next n
240 end
- Output:
Similar to Yabasic entry.
Gambas
Public Function make13(n As Integer) As Integer
Dim t As Integer = 0
While n
t = 10 * (t + 1)
n -= 1
Wend
Return t + 3
End Function
Public Sub Main()
Dim m As Long
For n As Integer = 0 To 7
m = make13(n) ^ 2
Print Format(make13(n), "#########"); "^2 = "; Format(m, "###############")
Next
End
- Output:
Similar to Yabasic entry.
PureBasic
Procedure.i make13 (n.i)
Define t.i = 0
While n
t = 10 * (t + 1)
n - 1
Wend
ProcedureReturn t + 3
EndProcedure
OpenConsole()
Define m.i
For n.i = 0 To 7
m = Pow(make13(n), 2)
PrintN(Right(Space(9) + Str(make13(n)), 9) + "^2 = " + StrU(m))
Next n
PrintN("---Program done, press RETURN---"): Input()
- Output:
Same as Yabasic entry.
QB64
Dim m As _Integer64
Dim n As Integer
For n = 0 To 7
m = make13(n) ^ 2
Print Using "#########^2 = ###############"; make13(n); m
Next n
End
Function make13 (n)
Dim t As _Integer64
t = 0
While n
t = 10 * (t + 1)
n = n - 1
Wend
make13 = t + 3
End Function
- Output:
Similar to Yabasic entry.
Run BASIC
for n = 0 to 7
m = make13(n)^2
print using("#########", make13(n)) + "^2 = " + using("###############", m)
next n
end
function make13(n)
t = 0
while n
t = 10 *(t +1)
n = n -1
wend
make13 = t+3
end function
- Output:
Similar to Yabasic entry.
Yabasic
for n = 0 to 7
m = make13(n)^2
print make13(n) using "#########", "^2 = ", m using "###############"
next n
end
sub make13(n)
local t
t = 0
while n
t = 10*(t+1)
n = n - 1
wend
return t+3
end sub
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
bc
x = 2
for (n = 0; n != 8; ++n) {
x = x * 10 - 17
x
" -> "
x * x
}
- Output:
3 -> 9 13 -> 169 113 -> 12769 1113 -> 1238769 11113 -> 123498769 111113 -> 12346098769 1111113 -> 1234572098769 11111113 -> 123456832098769
BQN
≍˘⟜(ט) 2(¯17+×)` 8⥊10
- Output:
┌─ ╵ 3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769 ┘
C
#include <stdio.h>
#include <stdint.h>
uint64_t ones_plus_three(uint64_t ones) {
uint64_t r = 0;
while (ones--) r = r*10 + 1;
return r*10 + 3;
}
int main() {
uint64_t n;
for (n=0; n<8; n++) {
uint64_t x = ones_plus_three(n);
printf("%8lu^2 = %15lu\n", x, x*x);
}
return 0;
}
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
C#
For 0 <= n < 22
using System; using BI = System.Numerics.BigInteger;
class Program { static void Main(string[] args) {
for (BI x = 3; BI.Log10(x) < 22; x = (x - 2) * 10 + 3)
Console.WriteLine("{1,43} {0,-20}", x, x * x); } }
- Output:
9 3 169 13 12769 113 1238769 1113 123498769 11113 12346098769 111113 1234572098769 1111113 123456832098769 11111113 12345679432098769 111111113 1234567905432098769 1111111113 123456790165432098769 11111111113 12345679012765432098769 111111111113 1234567901238765432098769 1111111111113 123456790123498765432098769 11111111111113 12345679012346098765432098769 111111111111113 1234567901234572098765432098769 1111111111111113 123456790123456832098765432098769 11111111111111113 12345679012345679432098765432098769 111111111111111113 1234567901234567905432098765432098769 1111111111111111113 123456790123456790165432098765432098769 11111111111111111113 12345679012345679012765432098765432098769 111111111111111111113 1234567901234567901238765432098765432098769 1111111111111111111113
C++
#include <cstdint>
#include <iomanip>
#include <iostream>
int main() {
for ( uint32_t i = 0; i < 8; ++i ) {
const uint64_t ones = std::stol(std::string(i, '1') + "3");
std::cout << std::setw(9) << ones << "^2 = " << ones * ones << std::endl;
}
}
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
CLU
ones_plus_three = proc (n: int) returns (int)
r: int := 0
for i: int in int$from_to(1, n) do
r := r*10 + 1
end
return(r*10 + 3)
end ones_plus_three
start_up = proc ()
po: stream := stream$primary_output()
for i: int in int$from_to(0, 7) do
n: int := ones_plus_three(i)
nsq: int := n**2
stream$putright(po, int$unparse(n), 8)
stream$puts(po, "^2 = ")
stream$putright(po, int$unparse(nsq), 15)
stream$putl(po, "")
end
end start_up
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
COBOL
IDENTIFICATION DIVISION.
PROGRAM-ID. ONES-THREE-SQUARED.
DATA DIVISION.
WORKING-STORAGE SECTION.
01 VARIABLES.
03 N PIC 9.
03 ONES-3 PIC 9(9).
03 SQUARE PIC 9(15).
01 FMT.
03 FMT-ONES-3 PIC Z(7)9.
03 FILLER PIC X(5) VALUE "^2 = ".
03 FMT-SQUARE PIC Z(14)9.
PROCEDURE DIVISION.
BEGIN.
PERFORM N-ONES-3 VARYING N FROM 0 BY 1 UNTIL N IS EQUAL TO 8.
STOP RUN.
N-ONES-3.
MOVE ZERO TO ONES-3.
PERFORM ADD-ONE N TIMES.
MULTIPLY 10 BY ONES-3.
ADD 3 TO ONES-3.
MULTIPLY ONES-3 BY ONES-3 GIVING SQUARE.
MOVE ONES-3 TO FMT-ONES-3.
MOVE SQUARE TO FMT-SQUARE.
DISPLAY FMT.
ADD-ONE.
MULTIPLY 10 BY ONES-3.
ADD 1 TO ONES-3.
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
Dart
import 'dart:core';
void main() {
for (int i = 0; i < 8; ++i) {
final ones = int.parse('1' * i + '3');
print('${ones.toString().padLeft(9)}^2 = ${ones * ones}');
}
}
- Output:
Same as C++ entry.
dc
2[10*17-p[ -> ]Pdd*pZ15>l]dslx
- Output:
3 -> 9 13 -> 169 113 -> 12769 1113 -> 1238769 11113 -> 123498769 111113 -> 12346098769 1111113 -> 1234572098769 11111113 -> 123456832098769
Delphi
procedure OnesPlusThree(Memo: TMemo);
{Create pattern: 3, 13, 113, 1113, and square}
var NS: string;
var I: integer;
var NV: int64;
begin
{Start with 3 in number string}
NS:='3';
for I:=1 to 7 do
begin
{Convert to a number}
NV:=StrToInt(NS);
Memo.Lines.Add(Format('%2D - %10d^2 =%18.0n',[I,NV,NV*NV+0.0]));
{Add a "1" to the number string}
NS:='1'+NS;
end;
end;
- Output:
1 - 3^2 = 9 2 - 13^2 = 169 3 - 113^2 = 12,769 4 - 1113^2 = 1,238,769 5 - 11113^2 = 123,498,769 6 - 111113^2 = 12,346,098,769 7 - 1111113^2 = 1,234,572,098,769 Elapsed Time: 8.668 ms.
EasyLang
n = 3
pre = 1
for i to 8
print n & " " & pow n 2
pre *= 10
n += pre
.
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
F#
[3L;13L;113L;1113L;11113L;111113L;1111113L;11111113L;111111113L]|>List.iter(fun n->printfn "%10d->%d" n (n*n))
- Output:
3->9 13->169 113->12769 1113->1238769 11113->123498769 111113->12346098769 1111113->1234572098769 11111113->123456832098769 111111113->12345679432098769
Factor
a(n) = ((10n+1 - 1) / 9 + 2)2
USING: io kernel math math.functions prettyprint ;
: a ( n -- e m ) 1 + 10^ 1 - 9 / 2 + dup sq ;
8 [ a swap pprint bl . ] each-integer
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Fermat
Func Make13(n) = m:=0; while n>0 do m:=10*(m+1);n:=n-1; od; m:=3+m; m.
for i=0 to 7 do !Make13(i);!' ';!Make13(i)^2;!!'' od
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Forth
: 1s+3
0 swap
begin dup while
swap 10 * 1+ swap 1-
repeat
drop 10 * 3 +
;
: sqr dup * ;
: show dup . ." ^2 = " sqr . cr ;
: show-upto
0 swap
begin over over < while
swap dup 1s+3 show 1+ swap
repeat
2drop
;
8 show-upto
bye
- Output:
3 ^2 = 9 13 ^2 = 169 113 ^2 = 12769 1113 ^2 = 1238769 11113 ^2 = 123498769 111113 ^2 = 12346098769 1111113 ^2 = 1234572098769 11111113 ^2 = 123456832098769
FreeBASIC
function make13(n as uinteger) as uinteger
dim as uinteger t = 0
while n
t = 10*(t+1)
n-=1
wend
return t+3
end function
dim as ulongint m
for n as uinteger = 0 to 7
m = make13(n)^2
print make13(n), m
next n
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Go
package main
import (
"fmt"
"strconv"
"strings"
)
func a(n int) {
s, _ := strconv.Atoi(strings.Repeat("1", n) + "3")
t := s * s
fmt.Printf("%d %d\n", s, t)
}
func main() {
for n := 0; n <= 7; n++ {
a(n)
}
}
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Haskell
import Text.Printf (printf)
onesPlusThree :: [Integer]
onesPlusThree =
(3 +) . (10 *)
<$> iterate (succ . (10 *)) 0
format :: Integer -> String
format = printf "%8lu^2 = %15lu" <*> (^ 2)
main :: IO ()
main =
(putStr . unlines . take 8) $
format <$> onesPlusThree
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
J
(,. *:) (9 %~ 17 + 10x ^ >:) i. 8
3 9
13 169
113 12769
1113 1238769
11113 123498769
111113 12346098769
1111113 1234572098769
11111113 123456832098769
Java
public final class ShowTheDecimalValueOfANumberOf1sAppendedWithA3ThenSquared {
public final static void main(String[] args) {
for ( int i = 0; i < 8; i++ ) {
final long value = Long.valueOf("1".repeat(i) + "3");
System.out.println(String.format("%9s%s", value, " => " + value * value));
}
}
}
- Output:
3 => 9 13 => 169 113 => 12769 1113 => 1238769 11113 => 123498769 111113 => 12346098769 1111113 => 1234572098769 11111113 => 123456832098769
JavaScript
'use strict'
let n = 0
for( let i = 1; i < 8; i ++ )
{
let n3 = ( n * 10 ) + 3
console.log( n3 + " " + ( n3 * n3 ) )
n *= 10
n += 1
}
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769
jq
Works with gojq, the Go implementation of jq
For large values of n, the unbounded-precision integer arithmetic of gojq will ensure accuracy.
# For gojq
def power($b): . as $in | reduce range(0;$b) as $i (1; . * $in);
# For pretty-printing
def lpad($len): tostring | ($len - length) as $l | (" " * $l)[:$l] + .;
" n number number^2",
(range(0;8) as $n
| ((("1"*$n) + "3") | tonumber) as $number
| ($n|lpad(3)) + ($number|lpad(10)) + ($number|power(2)|lpad(20)) )
- Output:
n number number^2 0 3 9 1 13 169 2 113 12769 3 1113 1238769 4 11113 123498769 5 111113 12346098769 6 1111113 1234572098769 7 11111113 123456832098769
For 100 <= n <= 105
Encoding "123456790" as "A", "987654320" as Z", and lastly "9876" as "N":
range(100; 106) as $n
| ((("1"*$n) + "3") | tonumber) as $number
| ($n|lpad(4)) + " "
+ ($number|power(2)|tostring| gsub("123456790";"A") | gsub("987654320";"Z") | gsub("9876";"N") | lpad(40))
- Output:
100 AAAAAAAAAAA1654320ZZZZZZZZZZN9 101 AAAAAAAAAAA127654320ZZZZZZZZZZN9 102 AAAAAAAAAAA12387654320ZZZZZZZZZZN9 103 AAAAAAAAAAA1234ZZZZZZZZZZZN9 104 AAAAAAAAAAA123460ZZZZZZZZZZZN9 105 AAAAAAAAAAA12345720ZZZZZZZZZZZN9
Julia
println("n (10^(n+1) - 1) ÷ 9 + 2) squared")
for n in 0:7
println(rpad(n, 14), rpad((big"10"^(n+1) - 1) ÷ 9 + 2, 19), ((big"10"^(n+1) - 1) ÷ 9 + 2)^2)
end
- Output:
n (10^(n+1) - 1) ÷ 9 + 2) squared 0 3 9 1 13 169 2 113 12769 3 1113 1238769 4 11113 123498769 5 111113 12346098769 6 1111113 1234572098769 7 11111113 123456832098769
K
{x,'x*x}2(-17+*)\8#10
- Output:
(3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769)
Lua
do
local n = 0
for i = 1,8 do
local n3 = ( n * 10 ) + 3
io.write( n3, " ", n3 * n3, "\n" )
n = ( n * 10 ) + 1
end
end
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
MAD
NORMAL MODE IS INTEGER
VECTOR VALUES FMT = $I8,7H **2 = ,I15*$
THROUGH LOOP, FOR I=0, 1, I.G.7
N = 0
THROUGH ONES, FOR J=1, 1, J.G.I
ONES N = N*10 + 1
N = N*10 + 3
LOOP PRINT FORMAT FMT,N,N*N
END OF PROGRAM
- Output:
3**2 = 9 13**2 = 169 113**2 = 12769 1113**2 = 1238769 11113**2 = 123498769 111113**2 = 12346098769 1111113**2 = 1234572098769 11111113**2 = 123456832098769
Mathematica / Wolfram Language
{#, #^2} & /@
Table[FromDigits[PadLeft[{3}, n, 1]], {n, 9}] // TableForm
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769 111111113 12345679432098769
Miranda
main :: [sys_message]
main = [Stdout (lay (map row [0..8]))]
row :: num->[char]
row n = rjustify 10 (show i) ++ "^2 = " ++ rjustify 20 (show (i^2))
where i = ones_three n
ones_three :: num->num
ones_three n = 3 + sum [10^p | p<-[1..n]]
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769 111111113^2 = 12345679432098769
Nim
import strformat
iterator genNumbers(maxOnes: Natural): int =
var ones = 0
yield 3
for _ in 1..maxOnes:
ones = 10 * ones + 10
yield ones + 3
for i in genNumbers(7):
echo &"{i:8} {i*i:18}"
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Nu
generate {|x| {out: {x: $x 'x * x': ($x * $x)} next: ($x * 10 - 17)} } 3 | take 8
or
..7 | each {|n| let x = 10 ** ($n + 1) // 9 + 2; {x: $x 'x * x': ($x * $x) } }
- Output:
╭───┬──────────┬─────────────────╮ │ # │ x │ x * x │ ├───┼──────────┼─────────────────┤ │ 0 │ 3 │ 9 │ │ 1 │ 13 │ 169 │ │ 2 │ 113 │ 12769 │ │ 3 │ 1113 │ 1238769 │ │ 4 │ 11113 │ 123498769 │ │ 5 │ 111113 │ 12346098769 │ │ 6 │ 1111113 │ 1234572098769 │ │ 7 │ 11111113 │ 123456832098769 │ ╰───┴──────────┴─────────────────╯
OCaml
let make13 n =
truncate (10. ** float n) / 9 * 10 + 3
let () =
for n = 0 to 7 do
let x = make13 n in Printf.printf "%9u%16u\n" x (x * x)
done
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
PARI/GP
Make13(n)=m=0;while(n>0,m=10*(m+1);n=n-1);m=3+m;return(m)
for(i=0,7,print(Make13(i)," ",Make13(i)^2))
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Pascal
Free Pascal
like Phix using byte, and convert than to ASCII. Because the values are calculated one by one, one can use addition to get rid of calculating squares, by using binomial formula. The best is shown in Algol_68 that it ends in a cyclic pattern of lenght 9.
{
10^pot+k -> prepend a 1 1113-> 11113
(10^pot+k)^2 = 10^(2*pot)+ 2*10^pot*k + k^2
(10^pot+k)^2 = 10^pot*(10^pot+2*k) + k^2
s_lastsqr = k*k
s_DeltaSqr = (10^pot+2*k) => 1222....2226
shift s_DeltaSqr by pot digits in SumMyDeltaSqr => 10^pot*(10^pot+2*k)
}
program OnesAppend3AndSquare;
const
MAX = 3700;
type
tmyNumb = array of byte;
var
res :AnsiString;
procedure OutMyNumb(const n: tmyNUmb;l,w: integer);
var
i,ofs : integer;
begin
l += 1;
if w < l then
w := l+1;
setlength(res,w);
fillchar(res[1],w,' ');
ofs := w-l;
For i := 1 to l do
res[i+ofs] := chr(n[l-i]+48);
write(res);
end;
procedure Out_k_sqr(const k,sqr_k: tmyNUmb;pot:integer);
var
dgtcnt : integer;
Begin
write(pot:4);
dgtcnt := 22;
if pot > 10 then
dgtcnt := 78;
OutMyNumb(k,pot,dgtcnt-4);
if pot > 10 then
writeln;
OutMyNumb(sqr_k,2*pot,dgtcnt);
writeln;
end;
procedure SumMyDeltaSqr(var res:tmyNUmb;const s:tmyNumb;pot: integer);
//res = s_lastsqr
//s = s_DeltaSqr
//shift s by l => (10^pot) * s_DeltaSqr = 10^pot*(10^pot+2*k)
var
i,sum,carry : integer;
begin
carry := 0;
For i := 0 to pot+1 do
begin
sum := res[i+pot]+s[i]+carry;
carry := ord(sum>9);
sum -= (-carry) AND 10;
res[i+pot] := sum;
end;
end;
var
s,s_DeltaSqr,s_lastsqr : tmyNumb;
pot: integer;
Begin
setlength(s,MAX);
setlength(s_DeltaSqr,Max+1);
setlength(s_lastsqr,2*Max+1);
pot := 0;
s[pot] := 3;
s_lastsqr[pot] := 9;
repeat
SumMyDeltaSqr(s_lastsqr,s_DeltaSqr,pot);
if pot < 10 then
Out_k_sqr(s,s_lastsqr,pot);
if pot = 37 then
Out_k_sqr(s,s_lastsqr,pot);
if pot > 0 then
s_DeltaSqr[pot]:= 2 // =>2*s[i] 2222...26
else
s_DeltaSqr[0] := 6;// =>2*s[0] 6
inc(pot);
s_DeltaSqr[pot]:= 1; //1...6
s[pot] := 1;
until pot = MAX;
Writeln('Finished til ',MAX);
end.
- @TIO.RUN:
0 3 9 1 13 169 2 113 12769 3 1113 1238769 4 11113 123498769 5 111113 12346098769 6 1111113 1234572098769 7 11111113 123456832098769 8 111111113 12345679432098769 9 1111111113 1234567905432098769 37 11111111111111111111111111111111111113 123456790123456790123456790123456790165432098765432098765432098765432098769 Finished til 3700 Real time: 0.106 s CPU share: 99.03 % @home real 0m0.016s
Perl
#!/usr/bin/perl
use strict; # https://rosettacode.org/wiki/Show_the_(decimal)_value_of_a_number_of_1s_appended_with_a_3,_then_squared
use warnings;
#use bignum; # uncomment for larger than 9 or 32-bit perls
for ( 0 .. 7 )
{
my $number = 1 x $_ . 3;
print "$number ", $number ** 2, "\n";
}
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
Phix
Perfect opportunity for a little string math, why not... Switches to the shorthand notation of Algol68g/jq for n>=85.
with javascript_semantics
for n=0 to 113 do
string res = repeat('3',n)&'9'
for i=1 to n do
res = "0" & res
integer digit = 3
for j=length(res)-i to 1 by -1 do
digit += res[j]-'0'
res[j] = remainder(digit,10)+'0'
digit = floor(digit/10)+1
end for
end for
if n<=37 then
printf(1,"%38s %75s\n",{repeat('1',n)&'3',res})
elsif n>=85 then
res = substitute_all(res,{"123456790","987654320","9876"},{"A","Z","N"})
printf(1,"%3d %36s\n",{n,res})
end if
end for
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769 111111113 12345679432098769 1111111113 1234567905432098769 11111111113 123456790165432098769 111111111113 12345679012765432098769 1111111111113 1234567901238765432098769 11111111111113 123456790123498765432098769 111111111111113 12345679012346098765432098769 1111111111111113 1234567901234572098765432098769 11111111111111113 123456790123456832098765432098769 111111111111111113 12345679012345679432098765432098769 1111111111111111113 1234567901234567905432098765432098769 11111111111111111113 123456790123456790165432098765432098769 111111111111111111113 12345679012345679012765432098765432098769 1111111111111111111113 1234567901234567901238765432098765432098769 11111111111111111111113 123456790123456790123498765432098765432098769 111111111111111111111113 12345679012345679012346098765432098765432098769 1111111111111111111111113 1234567901234567901234572098765432098765432098769 11111111111111111111111113 123456790123456790123456832098765432098765432098769 111111111111111111111111113 12345679012345679012345679432098765432098765432098769 1111111111111111111111111113 1234567901234567901234567905432098765432098765432098769 11111111111111111111111111113 123456790123456790123456790165432098765432098765432098769 111111111111111111111111111113 12345679012345679012345679012765432098765432098765432098769 1111111111111111111111111111113 1234567901234567901234567901238765432098765432098765432098769 11111111111111111111111111111113 123456790123456790123456790123498765432098765432098765432098769 111111111111111111111111111111113 12345679012345679012345679012346098765432098765432098765432098769 1111111111111111111111111111111113 1234567901234567901234567901234572098765432098765432098765432098769 11111111111111111111111111111111113 123456790123456790123456790123456832098765432098765432098765432098769 111111111111111111111111111111111113 12345679012345679012345679012345679432098765432098765432098765432098769 1111111111111111111111111111111111113 1234567901234567901234567901234567905432098765432098765432098765432098769 11111111111111111111111111111111111113 123456790123456790123456790123456790165432098765432098765432098765432098769 85 AAAAAAAAA1234ZZZZZZZZZN9 86 AAAAAAAAA123460ZZZZZZZZZN9 87 AAAAAAAAA12345720ZZZZZZZZZN9 88 AAAAAAAAA1234568320ZZZZZZZZZN9 89 AAAAAAAAA123456794320ZZZZZZZZZN9 90 AAAAAAAAAA54320ZZZZZZZZZN9 91 AAAAAAAAAA1654320ZZZZZZZZZN9 92 AAAAAAAAAA127654320ZZZZZZZZZN9 93 AAAAAAAAAA12387654320ZZZZZZZZZN9 94 AAAAAAAAAA1234ZZZZZZZZZZN9 95 AAAAAAAAAA123460ZZZZZZZZZZN9 96 AAAAAAAAAA12345720ZZZZZZZZZZN9 97 AAAAAAAAAA1234568320ZZZZZZZZZZN9 98 AAAAAAAAAA123456794320ZZZZZZZZZZN9 99 AAAAAAAAAAA54320ZZZZZZZZZZN9 100 AAAAAAAAAAA1654320ZZZZZZZZZZN9 101 AAAAAAAAAAA127654320ZZZZZZZZZZN9 102 AAAAAAAAAAA12387654320ZZZZZZZZZZN9 103 AAAAAAAAAAA1234ZZZZZZZZZZZN9 104 AAAAAAAAAAA123460ZZZZZZZZZZZN9 105 AAAAAAAAAAA12345720ZZZZZZZZZZZN9 106 AAAAAAAAAAA1234568320ZZZZZZZZZZZN9 107 AAAAAAAAAAA123456794320ZZZZZZZZZZZN9 108 AAAAAAAAAAAA54320ZZZZZZZZZZZN9 109 AAAAAAAAAAAA1654320ZZZZZZZZZZZN9 110 AAAAAAAAAAAA127654320ZZZZZZZZZZZN9 111 AAAAAAAAAAAA12387654320ZZZZZZZZZZZN9 112 AAAAAAAAAAAA1234ZZZZZZZZZZZZN9 113 AAAAAAAAAAAA123460ZZZZZZZZZZZZN9
Plain English
Only 5 entries are shown due to Plain English's 32-bit signed integers.
To run:
Start up.
Put 0 into a counter.
Loop.
If the counter is greater than 4, break.
Put 10 into a number.
Raise the number to the counter plus 1.
Subtract 1 from the number.
Divide the number by 9.
Add 2 to the number.
Put the number into a squared number.
Raise the squared number to 2.
Write the number then " " then the squared number on the console.
Bump the counter.
Repeat.
Wait for the escape key.
Shut down.
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769
Python
One Liner
The most Pythonic way...
[print("( " + "1"*i + "3 ) ^ 2 = " + str(int("1"*i + "3")**2)) for i in range(0,8)]
- Output:
( 3 ) ^ 2 = 9 ( 13 ) ^ 2 = 169 ( 113 ) ^ 2 = 12769 ( 1113 ) ^ 2 = 1238769 ( 11113 ) ^ 2 = 123498769 ( 111113 ) ^ 2 = 12346098769 ( 1111113 ) ^ 2 = 1234572098769 ( 11111113 ) ^ 2 = 123456832098769
Procedural
#!/usr/bin/python
def make13(n):
return 10 ** (n + 1) // 9 + 2
for n in map(make13, range(8)):
print('%9d%16d' % (n, n * n))
Functional
Taking the first n terms from an infinite series:
'''Sequence of 1s appended with a 3, then squared'''
from itertools import islice
# seriesOfOnesEndingWithThree :: [Int]
def seriesOfOnesEndingWithThree():
'''An ordered and non-finite stream of integers
whose decimal digits end in 3, preceded only by a
series of (zero or more) ones.
(3, 13, 113, 1113 ...)
'''
def go(n):
return lambda x: n + 10 * x
return fmapGen(go(3))(
iterate(go(1))(0)
)
# showSquare :: (Int, Int, Int) -> String
def showSquare(ew, vw, n):
'''A string representation of the square of n,
both as an expression and as a value, with a
right-justfied expression column of width ew,
and a right-justified value column of width vw.
'''
return f'{str(n).rjust(ew)}^2 = {str(n ** 2).rjust(vw)}'
# ------------------------- TEST -------------------------
# main :: IO ()
def main():
'''Listing of the first 7 values of the series.'''
xs = take(7)(
seriesOfOnesEndingWithThree()
)
final = xs[-1]
w = len(str(final))
w1 = len(str(final ** 2))
print('\n'.join([
showSquare(w, w1, x) for x in xs
]))
# ----------------------- GENERIC ------------------------
# fmapGen <$> :: (a -> b) -> Gen [a] -> Gen [b]
def fmapGen(f):
'''A function f mapped over a
non finite stream of values.
'''
def go(g):
while True:
v = next(g, None)
if None is not v:
yield f(v)
else:
return
return go
# iterate :: (a -> a) -> a -> Gen [a]
def iterate(f):
'''An infinite list of repeated
applications of f to x.
'''
def go(x):
v = x
while True:
yield v
v = f(v)
return go
# take :: Int -> [a] -> [a]
def take(n):
'''The first n values of xs.
'''
return lambda xs: list(islice(xs, n))
# MAIN ---
if __name__ == '__main__':
main()
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769
Quackery
[ char 1 swap of
char 3 join
$->n drop ] is 1's+3 ( n -> n )
8 times
[ i^ 1's+3
dup echo
say " --> "
dup * echo cr ]
- Output:
3 --> 9 13 --> 169 113 --> 12769 1113 --> 1238769 11113 --> 123498769 111113 --> 12346098769 1111113 --> 1234572098769 11111113 --> 123456832098769
Raku
In an attempt to stave of terminal ennui, Find the first 8 where a(n) is semiprime.
say "$_, {.²}" for (^∞).map({ ( 1 x $_ ~ 3)} ).grep({ .is-prime })[^8]
- Output:
3, 9 13, 169 113, 12769 11113, 123498769 111111113, 12345679432098769 11111111113, 123456790165432098769 111111111111111111111113, 12345679012345679012346098765432098765432098769 111111111111111111111111111111111111111111111111111111111111111111111111111111111113, 12345679012345679012345679012345679012345679012345679012345679012345679012345679012765432098765432098765432098765432098765432098765432098765432098765432098765432098769
Refal
$ENTRY Go {
= <Each (DispOnes3) <Iota 0 7>>;
};
DispOnes3 {
s.I, <Ones3 s.I>: e.Ones3,
<* (e.Ones3) e.Ones3>: e.Square
= <Prout <Rjust 10 e.Ones3> '^2 = ' <Rjust 20 e.Square>>;
};
Ones3 {
s.N = <Ones3 (0) s.N>;
(e.Acc) 0 = <+ (e.Acc) 3>;
(e.Acc) s.N = <Ones3 (<* (<+ (e.Acc) 1>) 10>) <- s.N 1>>;
};
Repeat {
0 s.I = ;
s.N s.I = s.I <Repeat <- s.N 1> s.I>;
};
Rjust {
s.N e.X,
<Repeat s.N ' '>: e.Padding,
<Symb e.X>: e.Num,
<Last s.N e.Padding e.Num>: (e.Y) e.Disp = e.Disp;
};
Iota {
s.End s.End = s.End;
s.Start s.End = s.Start <Iota <+ 1 s.Start> s.End>;
};
Each {
(e.F) = ;
(e.F) s.I e.X = <Mu e.F s.I> <Each (e.F) e.X>;
};
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
REXX
A little extra code was added to pre-compute the biggest number to find the widths for output alignment.
/*REXX program appends a "3" to a number of "1"s, and then squares that number. */
numeric digits 1000 /*be able to handle huge numbers. */
parse arg n . /*obtain optional argument from the CL.*/
if n=='' | n=="," then n= 9 /*Not specified? Then use the default.*/
_= copies(1, n)3 /*compute largest index to get width. */
w1= length( commas(_) ) /*get the width of the largest index. */
w2= length( commas(_**2) ) /* " " " " " " number. */
do #=0 to n; _=copies(1, #)3 /*calculate prefix number for output. */
say right( commas(_), w1) right( commas(_**2), w2) /*show prefix, number. */
end /*#*/
exit 0 /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
commas: parse arg ?; do jc=length(?)-3 to 1 by -3; ?=insert(',', ?, jc); end; return ?
- output when using the input of: 37
(Shown at three-quarter size.)
3 9 13 169 113 12,769 1,113 1,238,769 11,113 123,498,769 111,113 12,346,098,769 1,111,113 1,234,572,098,769 11,111,113 123,456,832,098,769 111,111,113 12,345,679,432,098,769 1,111,111,113 1,234,567,905,432,098,769 11,111,111,113 123,456,790,165,432,098,769 111,111,111,113 12,345,679,012,765,432,098,769 1,111,111,111,113 1,234,567,901,238,765,432,098,769 11,111,111,111,113 123,456,790,123,498,765,432,098,769 111,111,111,111,113 12,345,679,012,346,098,765,432,098,769 1,111,111,111,111,113 1,234,567,901,234,572,098,765,432,098,769 11,111,111,111,111,113 123,456,790,123,456,832,098,765,432,098,769 111,111,111,111,111,113 12,345,679,012,345,679,432,098,765,432,098,769 1,111,111,111,111,111,113 1,234,567,901,234,567,905,432,098,765,432,098,769 11,111,111,111,111,111,113 123,456,790,123,456,790,165,432,098,765,432,098,769 111,111,111,111,111,111,113 12,345,679,012,345,679,012,765,432,098,765,432,098,769 1,111,111,111,111,111,111,113 1,234,567,901,234,567,901,238,765,432,098,765,432,098,769 11,111,111,111,111,111,111,113 123,456,790,123,456,790,123,498,765,432,098,765,432,098,769 111,111,111,111,111,111,111,113 12,345,679,012,345,679,012,346,098,765,432,098,765,432,098,769 1,111,111,111,111,111,111,111,113 1,234,567,901,234,567,901,234,572,098,765,432,098,765,432,098,769 11,111,111,111,111,111,111,111,113 123,456,790,123,456,790,123,456,832,098,765,432,098,765,432,098,769 111,111,111,111,111,111,111,111,113 12,345,679,012,345,679,012,345,679,432,098,765,432,098,765,432,098,769 1,111,111,111,111,111,111,111,111,113 1,234,567,901,234,567,901,234,567,905,432,098,765,432,098,765,432,098,769 11,111,111,111,111,111,111,111,111,113 123,456,790,123,456,790,123,456,790,165,432,098,765,432,098,765,432,098,769 111,111,111,111,111,111,111,111,111,113 12,345,679,012,345,679,012,345,679,012,765,432,098,765,432,098,765,432,098,769 1,111,111,111,111,111,111,111,111,111,113 1,234,567,901,234,567,901,234,567,901,238,765,432,098,765,432,098,765,432,098,769 11,111,111,111,111,111,111,111,111,111,113 123,456,790,123,456,790,123,456,790,123,498,765,432,098,765,432,098,765,432,098,769 111,111,111,111,111,111,111,111,111,111,113 12,345,679,012,345,679,012,345,679,012,346,098,765,432,098,765,432,098,765,432,098,769 1,111,111,111,111,111,111,111,111,111,111,113 1,234,567,901,234,567,901,234,567,901,234,572,098,765,432,098,765,432,098,765,432,098,769 11,111,111,111,111,111,111,111,111,111,111,113 123,456,790,123,456,790,123,456,790,123,456,832,098,765,432,098,765,432,098,765,432,098,769 111,111,111,111,111,111,111,111,111,111,111,113 12,345,679,012,345,679,012,345,679,012,345,679,432,098,765,432,098,765,432,098,765,432,098,769 1,111,111,111,111,111,111,111,111,111,111,111,113 1,234,567,901,234,567,901,234,567,901,234,567,905,432,098,765,432,098,765,432,098,765,432,098,769 11,111,111,111,111,111,111,111,111,111,111,111,113 123,456,790,123,456,790,123,456,790,123,456,790,165,432,098,765,432,098,765,432,098,765,432,098,769
Ring
load "stdlib.ring"
decimals(0)
see "working..." + nl
row = 0
limit = 8
str = "3"
for n = 1 to limit
if n = 1
strn = number(str)
res = pow(strn,2)
see "{" + strn + "," + res + "}" + nl
else
str = "1" + strn
strn = number(str)
res = pow(strn,2)
see "{" + strn + "," + res + "}" + nl
ok
next
see "done..." + nl
- Output:
working... {3,9} {13,169} {113,12769} {1113,1238769} {11113,123498769} {111113,12346098769} {1111113,1234572098769} {11111113,123456832098769} done...
RPL
≪ { }
0 7 FOR n
10 n ^ 1 - 9 / 10 * 3 + SQ +
NEXT
≫ 'TASK' STO
- Output:
1: { 9 169 12769 1238769 123498769 12346098769 1234572098769 123456832098769 }
Ruby
m = 8
(0..m).each do |n|
ones3 = "1"*n +"3"
puts ones3.ljust(m+2) + ( ones3.to_i**2).to_s
end
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769 111111113 12345679432098769
Rust
fn main() {
let mut big_squares : Vec<u64> = Vec::new( ) ;
let mut numberstrings : Vec<String> = Vec::new( ) ;
for n in 0..8 {
let mut numberstring : String = String::new( ) ;
for i in 0..=n {
if i != 0 {
numberstring.push( '1' ) ;
}
}
numberstring.push('3') ;
let number : u64 = numberstring.parse::<u64>().unwrap( ) ;
numberstrings.push( numberstring ) ;
big_squares.push( number.pow( 2 )) ;
}
for i in 0..numberstrings.len( ) {
print!("{} ^ 2 =" , numberstrings[ i ] ) ;
let width = 30 - (7 + i ) ;
println!("{:>width$}" , big_squares[ i ] ) ;
}
}
- Output:
3 ^ 2 = 9 13 ^ 2 = 169 113 ^ 2 = 12769 1113 ^ 2 = 1238769 11113 ^ 2 = 123498769 111113 ^ 2 = 12346098769 1111113 ^ 2 = 1234572098769 11111113 ^ 2 = 123456832098769
Seed7
$ include "seed7_05.s7i";
const proc: main is func
local
var integer: a is 0;
var integer: n is 0;
begin
for n range 0 to 7 do
a := (10 ** (n + 1) - 1) div 9 + 2;
writeln(a <& " " <& a * a);
end for;
end func;
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
SETL
program ones_appended_with_a_3_squared;
loop for n in [0..7] do
k := ones_three(n);
print(lpad(str k, 10) + "^2 = " + lpad(str(k*k), 20));
end loop;
proc ones_three(n);
return 3 +/ [10**p : p in [1..n]];
end proc;
end program;
- Output:
3^2 = 9 13^2 = 169 113^2 = 12769 1113^2 = 1238769 11113^2 = 123498769 111113^2 = 12346098769 1111113^2 = 1234572098769 11111113^2 = 123456832098769
Sidef
0..^8 -> each {|n|
var k = ((10**(n+1) - 1)/9 + 2)
say [k, k**2]
}
- Output:
[3, 9] [13, 169] [113, 12769] [1113, 1238769] [11113, 123498769] [111113, 12346098769] [1111113, 1234572098769] [11111113, 123456832098769]
Wren
import "./fmt" for Fmt
var a = Fn.new { |n|
var s = Num.fromString("1" * n + "3")
var t = s * s
Fmt.print("$d $d", s, t)
}
for (n in 0..7) a.call(n)
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
XPL0
Only 32-bit integers are available, but the standard 64-bit floating point (real) provides 15 decimal digits.
int N, M;
real X;
[Format(16, 0);
for N:= 0 to 8-1 do
[X:= 0.;
for M:= 0 to N-1 do
X:= X*10. + 1.;
X:= X*10. + 3.;
RlOut(0, X);
RlOut(0, X*X);
CrLf(0);
];
]
- Output:
3 9 13 169 113 12769 1113 1238769 11113 123498769 111113 12346098769 1111113 1234572098769 11111113 123456832098769
- Draft Programming Tasks
- 11l
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