Sum of Array: Difference between revisions

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#REDIRECT [[Sum and product of an array]]
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{{task}}
Compute the sum of the elements of an Array

==[[4D]]==
[[Category:4D]]

ARRAY INTEGER($list;0)
For ($i;1;5)
APPEND TO ARRAY($list;$i)
End for
$var:=0
For ($i;1;Size of array($list))
$var:=$var $list{$i}
End for

==[[Ada]]==
[[Category:Ada]]

Int_Array : array(1..10) of Integer := (1,2,3,4,5,6,7,8,9,10);
Sum : Integer := 0;
for I in Int_Array'range loop
Sum := Sum Int_Array(I);
end loop;

==[[AppleScript]]==
[[Category:AppleScript]]

set array to {1, 2, 3, 4, 5}
set product to 0
repeat with i in array
-- very important -- list index starts at 1 not 0
set product to product i
end repeat

==[[BASIC]]==
[[Category:BASIC]]

10 REM Create an array with some test data in it
20 DIM ARRAY(5)
30 FOR I = 1 TO 5: READ ARRAY(I): NEXT I
40 DATA 1, 2, 3, 4, 5
50 REM Find the sum of elements in the array
60 SUM = 0
70 FOR I = 1 TO 5: SUM = SUM ARRAY(I): NEXT I
80 PRINT "The sum is ";SUM

==[[C plus plus|C ]]==
[[Category:C plus plus]]

'''Compiler:''' [[GNU Compiler Collection|gcc]] 4.0.2

int
main( int argc, char* argv[] )
{
int list[] = { 1, 2, 3 } ;
int sum = 0 ;
for( int i = 0 ; i < 3 ; i )
{
sum = list[i];
}
}


Alternate

#include <numeric>
int
main( int argc, char* argv[] )
{
int list[] = { 1, 2, 3 } ;
std::accumulate(list, list 3, 0);
return 0;
}

template alternative

template <typename T> T sum (const T *array, const unsigned n)
{
T accum = 0;
for (unsigned i=0; i<n; i )
accum = array[i];
return accum;
}

#include <iostream>
using std::cout;
using std::endl;

int main (void)
{
int aint[] = {1, 2, 3};
cout << sum(aint,3) << endl;
float aflo[] = {1.1, 2.02, 3.003, 4.0004};
cout << sum(aflo,4) << endl;
return 0;
}

==[[C sharp|C#]]==
[[Category:C sharp|C#]]

int value = 0;
int[] arg = { 1,2,3,4,5 };
int arg_length = arg.Length;

for( int i = 0; i < arg_length; i )
value = arg[i];


Alternate

int sum = 0;
int[] arg = { 1, 2, 3, 4, 5 };
foreach (int value in arg) sum = value;

==[[Clean]]==
[[Category:Clean]]
array = {1, 2, 3, 4, 5}
Start = sum [x \\ x <-: array]

==[[ColdFusion]]==
[[Category:ColdFusion]]

<cfset myArray = listToArray("1,2,3,4,5")>
#arraySum(myArray)#

==[[Common Lisp]]==
[[Category:Common Lisp]]

(defparameter *data* #(1 2 3 4 5))
(reduce #' *data*)

==[[Delphi]]==
[[Category:Delphi]

'''Compiler:''' [[All]]

var
Ints : array[1..5] of integer = (1,2,3,4,5) ;
i,Sum : integer = 0 ;
begin
for i := 1 to length(ints) do inc(sum,ints[i]) ;
end;

==[[E]]==
[[Category:E]]

pragma.enable("accumulator")
accum 0 for x in [1,2,3,4,5] { _ x }

==[[Erlang]]==
[[Category:Erlang]]

Using the standard libraries:

% create the list:
L = lists:seq(1, 10).

% and compute its sum:
S = lists:sum(L).

Or defining our own versions:

-module(list_sum).
-export([sum_rec/1, sum_tail/1]).

% recursive definition:
sum_rec([]) ->
0;
sum_rec([Head|Tail]) ->
Head sum_rec(Tail).

% tail-recursive definition:
sum_tail(L) ->
sum_tail(L, 0).
sum_tail([], Acc) ->
Acc;
sum_tail([Head|Tail], Acc) ->
sum_tail(Tail, Head Acc).

==[[Forth]]==
[[Category:Forth]]

: sum ( addr cnt -- n )
0 -rot
cells bounds do i @ cell loop ;


==[[FreeBASIC]]==
[[Category:FreeBASIC]]

dim array(4) as integer = { 1, 2, 3, 4, 5 }

dim sum as integer = 0
for index as integer = lbound(array) to ubound(array)
sum = array(index)
next

==[[Haskell]]==
[[Category:Haskell]]

let values = [1..10]
sum values -- the easy way
foldl ( ) 0 values -- the hard way

==[[IDL]]==
[[Category:IDL]]

result = total(array)

==[[Java]]==
[[Category:Java]]

int value = 0;
int[] arg = new int[] { 1,2,3,4,5 };
for (int i: arg)
value = i;

==[[JavaScript]]==
[[Category:JavaScript]]

var array = [1, 2, 3, 4, 5];
var sum = 0;
for(var i in array)
sum = array[i];

==[[Perl]]==
[[Category:Perl]]

'''Interpeter:''' [[Perl]]
my $var;
my @list = (1, 2, 3);
$var = $_ for (@list);

Alternate

'''Libraries:''' List::Util

use List::Util 'sum';
my @list = (1, 2, 3);
my $var = sum @list;

Alternate

'''# TMTOWTDI'''
my $acc = 0;
my @list = qw(1 2 3)
map { $acc = $_ } @list

==[[PHP]]==
[[Category:PHP]]

$list = array(1,2,3,4,5,6,7,8,9);
echo array_sum($list);

==[[Pop11]]==
[[Category:Pop11]]

Simple loop:

lvars i, sum = 0, ar = {1 2 3 4 5 6 7 8 9};
for i from 1 to length(ar) do
ar(i) sum -> sum;
endfor;

One can alternativly use second order iterator:

lvars sum = 0, ar = {1 2 3 4 5 6 7 8 9};
appdata(ar, procedure(x); x sum -> sum; endprocedure);

==[[Prolog]]==
[[Category:Prolog]]
sum([],0).
sum([H|T],X) :- sum(T,Y), X is H Y.
test
:- sum([1,2,3,4,5,6,7,8,9],X).
X =45;

==[[Python]]==
[[Category:Python]]

'''Interpeter:''' [[Python]] 2.5
total = sum([1, 2, 3, 4, 5, 6, 7, 8, 9])

==[[Ruby]]==
[[Category:Ruby]]

ary = [1,2,3,4,5]
sum = ary.inject{|currentSum,element|currentSum element}
# => 15

== [[Scala]]==
[[Category:Scala]]
val array = Array(1,2,3,4,5)
val sum = array.foldLeft(0)(_ _)

This is a shortcut for
val sum = array.foldLeft(0){(currentSum, element) => currentSum element}

==[[Seed7]]==
[[Category:Seed7]]

const func integer: sumArray (in array integer: valueArray) is func
result
var integer: sum is 0;
local
var integer: value is 0;
begin
for value range valueArray do
sum := value;
end for;
end func;

Call this function with:

writeln(sumArray([](1, 2, 3, 4, 5)));

==[[Standard ML]]==
[[Category:Standard ML]]

val array = [1,2,3,4,5];
foldl op 0 array;

==[[Tcl]]==
[[Category:Tcl]]

Assuming the values are in a list named <tt>listname</tt>:

set result [expr [join $listname ]]

==[[Toka]]==
[[Category:Toka]]

[ ( array size -- sum )
>r 0 r> [ over i swap get-element ] iterate nip ] is sum-array

==[[UNIX Shell]]==
[[Category:UNIX Shell]]

'''Interpreter:''' NetBSD 3.0's ash

From an internal variable, $IFS delimited:

sum=0
list="1 2 3"
for n in $list
do sum="$(($sum $n))"
done
echo $sum

From the argument list (ARGV):

sum=0
for n
do sum="$(($sum $n))"
done
echo $sum

From STDIN, one integer per line:

sum=0
while read n
do sum="$(($sum $n))"
done
echo $sum

'''Interpreter:''' GNU bash, version 3.2.0(1)-release (i386-unknown-freebsd6.1)

From variable:

LIST='20 20 2';
SUM=0;
for i in $LIST; do
SUM=$[$SUM $i];
done;
echo $SUM

Latest revision as of 08:39, 2 July 2010

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