Sum of Array: Difference between revisions
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Compute the sum of the elements of an Array |
Compute the sum of the elements of an Array |
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Line 11: | Line 11: | ||
$var:=0 |
$var:=0 |
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For ($i;1;Size of array($list)) |
For ($i;1;Size of array($list)) |
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$var:=$var |
$var:=$var+$list{$i} |
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End for |
End for |
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Line 20: | Line 20: | ||
Sum : Integer := 0; |
Sum : Integer := 0; |
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for I in Int_Array'range loop |
for I in Int_Array'range loop |
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Sum := Sum |
Sum := Sum + Int_Array(I); |
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end loop; |
end loop; |
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Line 30: | Line 30: | ||
repeat with i in array |
repeat with i in array |
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-- very important -- list index starts at 1 not 0 |
-- very important -- list index starts at 1 not 0 |
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set product to product |
set product to product + i |
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end repeat |
end repeat |
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Line 42: | Line 42: | ||
50 REM Find the sum of elements in the array |
50 REM Find the sum of elements in the array |
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60 SUM = 0 |
60 SUM = 0 |
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70 FOR I = 1 TO 5: SUM = SUM |
70 FOR I = 1 TO 5: SUM = SUM + ARRAY(I): NEXT I |
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80 PRINT "The sum is ";SUM |
80 PRINT "The sum is ";SUM |
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==[[C plus plus|C |
==[[C plus plus|C++]]== |
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[[Category:C plus plus]] |
[[Category:C plus plus]] |
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Line 55: | Line 55: | ||
int list[] = { 1, 2, 3 } ; |
int list[] = { 1, 2, 3 } ; |
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int sum = 0 ; |
int sum = 0 ; |
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for( int i = 0 ; i < 3 ; i |
for( int i = 0 ; i < 3 ; i++ ) |
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{ |
{ |
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sum |
sum += list[i]; |
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} |
} |
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} |
} |
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Line 69: | Line 69: | ||
{ |
{ |
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int list[] = { 1, 2, 3 } ; |
int list[] = { 1, 2, 3 } ; |
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std::accumulate(list, list |
std::accumulate(list, list + 3, 0); |
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return 0; |
return 0; |
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} |
} |
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Line 78: | Line 78: | ||
{ |
{ |
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T accum = 0; |
T accum = 0; |
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for (unsigned i=0; i<n; i |
for (unsigned i=0; i<n; i++) |
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accum |
accum += array[i]; |
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return accum; |
return accum; |
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} |
} |
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Line 103: | Line 103: | ||
int arg_length = arg.Length; |
int arg_length = arg.Length; |
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for( int i = 0; i < arg_length; i |
for( int i = 0; i < arg_length; i++ ) |
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value |
value += arg[i]; |
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Line 111: | Line 111: | ||
int sum = 0; |
int sum = 0; |
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int[] arg = { 1, 2, 3, 4, 5 }; |
int[] arg = { 1, 2, 3, 4, 5 }; |
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foreach (int value in arg) sum |
foreach (int value in arg) sum += value; |
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==[[Clean]]== |
==[[Clean]]== |
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Line 128: | Line 128: | ||
(defparameter *data* #(1 2 3 4 5)) |
(defparameter *data* #(1 2 3 4 5)) |
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(reduce #' |
(reduce #'+ *data*) |
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==[[Delphi]]== |
==[[Delphi]]== |
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Line 146: | Line 146: | ||
pragma.enable("accumulator") |
pragma.enable("accumulator") |
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accum 0 for x in [1,2,3,4,5] { _ |
accum 0 for x in [1,2,3,4,5] { _ + x } |
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==[[Erlang]]== |
==[[Erlang]]== |
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Line 168: | Line 168: | ||
0; |
0; |
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sum_rec([Head|Tail]) -> |
sum_rec([Head|Tail]) -> |
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Head |
Head + sum_rec(Tail). |
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% tail-recursive definition: |
% tail-recursive definition: |
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Line 176: | Line 176: | ||
Acc; |
Acc; |
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sum_tail([Head|Tail], Acc) -> |
sum_tail([Head|Tail], Acc) -> |
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sum_tail(Tail, Head |
sum_tail(Tail, Head + Acc). |
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==[[Forth]]== |
==[[Forth]]== |
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Line 183: | Line 183: | ||
: sum ( addr cnt -- n ) |
: sum ( addr cnt -- n ) |
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0 -rot |
0 -rot |
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cells bounds do i @ |
cells bounds do i @ + cell +loop ; |
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Line 193: | Line 193: | ||
dim sum as integer = 0 |
dim sum as integer = 0 |
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for index as integer = lbound(array) to ubound(array) |
for index as integer = lbound(array) to ubound(array) |
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sum |
sum += array(index) |
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next |
next |
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Line 201: | Line 201: | ||
let values = [1..10] |
let values = [1..10] |
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sum values -- the easy way |
sum values -- the easy way |
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foldl ( |
foldl (+) 0 values -- the hard way |
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==[[IDL]]== |
==[[IDL]]== |
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Line 214: | Line 214: | ||
int[] arg = new int[] { 1,2,3,4,5 }; |
int[] arg = new int[] { 1,2,3,4,5 }; |
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for (int i: arg) |
for (int i: arg) |
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value |
value += i; |
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==[[JavaScript]]== |
==[[JavaScript]]== |
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Line 222: | Line 222: | ||
var sum = 0; |
var sum = 0; |
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for(var i in array) |
for(var i in array) |
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sum |
sum += array[i]; |
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==[[Perl]]== |
==[[Perl]]== |
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Line 230: | Line 230: | ||
my $var; |
my $var; |
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my @list = (1, 2, 3); |
my @list = (1, 2, 3); |
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$var |
$var += $_ for (@list); |
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Alternate |
Alternate |
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Line 245: | Line 245: | ||
my $acc = 0; |
my $acc = 0; |
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my @list = qw(1 2 3) |
my @list = qw(1 2 3) |
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map { $acc |
map { $acc += $_ } @list |
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==[[PHP]]== |
==[[PHP]]== |
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Line 260: | Line 260: | ||
lvars i, sum = 0, ar = {1 2 3 4 5 6 7 8 9}; |
lvars i, sum = 0, ar = {1 2 3 4 5 6 7 8 9}; |
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for i from 1 to length(ar) do |
for i from 1 to length(ar) do |
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ar(i) |
ar(i) + sum -> sum; |
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endfor; |
endfor; |
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Line 266: | Line 266: | ||
lvars sum = 0, ar = {1 2 3 4 5 6 7 8 9}; |
lvars sum = 0, ar = {1 2 3 4 5 6 7 8 9}; |
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appdata(ar, procedure(x); x |
appdata(ar, procedure(x); x + sum -> sum; endprocedure); |
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==[[Prolog]]== |
==[[Prolog]]== |
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[[Category:Prolog]] |
[[Category:Prolog]] |
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sum([],0). |
sum([],0). |
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sum([H|T],X) :- sum(T,Y), X is H |
sum([H|T],X) :- sum(T,Y), X is H + Y. |
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test |
test |
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:- sum([1,2,3,4,5,6,7,8,9],X). |
:- sum([1,2,3,4,5,6,7,8,9],X). |
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Line 286: | Line 286: | ||
ary = [1,2,3,4,5] |
ary = [1,2,3,4,5] |
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sum = ary.inject{|currentSum,element|currentSum |
sum = ary.inject{|currentSum,element|currentSum+element} |
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# => 15 |
# => 15 |
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Line 292: | Line 292: | ||
[[Category:Scala]] |
[[Category:Scala]] |
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val array = Array(1,2,3,4,5) |
val array = Array(1,2,3,4,5) |
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val sum = array.foldLeft(0)(_ |
val sum = array.foldLeft(0)(_ + _) |
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This is a shortcut for |
This is a shortcut for |
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val sum = array.foldLeft(0){(currentSum, element) => currentSum |
val sum = array.foldLeft(0){(currentSum, element) => currentSum + element} |
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==[[Seed7]]== |
==[[Seed7]]== |
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Line 307: | Line 307: | ||
begin |
begin |
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for value range valueArray do |
for value range valueArray do |
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sum |
sum +:= value; |
||
end for; |
end for; |
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end func; |
end func; |
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Line 319: | Line 319: | ||
val array = [1,2,3,4,5]; |
val array = [1,2,3,4,5]; |
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foldl op |
foldl op+ 0 array; |
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==[[Tcl]]== |
==[[Tcl]]== |
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Line 326: | Line 326: | ||
Assuming the values are in a list named <tt>listname</tt>: |
Assuming the values are in a list named <tt>listname</tt>: |
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set result [expr [join $listname |
set result [expr [join $listname +]] |
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==[[Toka]]== |
==[[Toka]]== |
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Line 332: | Line 332: | ||
[ ( array size -- sum ) |
[ ( array size -- sum ) |
||
>r 0 r> [ over i swap get-element |
>r 0 r> [ over i swap get-element + ] iterate nip ] is sum-array |
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==[[UNIX Shell]]== |
==[[UNIX Shell]]== |
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Line 344: | Line 344: | ||
list="1 2 3" |
list="1 2 3" |
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for n in $list |
for n in $list |
||
do sum="$(($sum |
do sum="$(($sum + $n))" |
||
done |
done |
||
echo $sum |
echo $sum |
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Line 352: | Line 352: | ||
sum=0 |
sum=0 |
||
for n |
for n |
||
do sum="$(($sum |
do sum="$(($sum + $n))" |
||
done |
done |
||
echo $sum |
echo $sum |
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Line 360: | Line 360: | ||
sum=0 |
sum=0 |
||
while read n |
while read n |
||
do sum="$(($sum |
do sum="$(($sum + $n))" |
||
done |
done |
||
echo $sum |
echo $sum |
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Line 371: | Line 371: | ||
SUM=0; |
SUM=0; |
||
for i in $LIST; do |
for i in $LIST; do |
||
SUM=$[$SUM |
SUM=$[$SUM + $i]; |
||
done; |
done; |
||
echo $SUM |
echo $SUM |
Revision as of 12:27, 1 September 2007
Sum of Array
You are encouraged to solve this task according to the task description, using any language you may know.
You are encouraged to solve this task according to the task description, using any language you may know.
Compute the sum of the elements of an Array
4D
ARRAY INTEGER($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
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
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
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++
Compiler: 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#
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
array = {1, 2, 3, 4, 5} Start = sum [x \\ x <-: array]
ColdFusion
<cfset myArray = listToArray("1,2,3,4,5")> #arraySum(myArray)#
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
pragma.enable("accumulator") accum 0 for x in [1,2,3,4,5] { _ + x }
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
: sum ( addr cnt -- n ) 0 -rot cells bounds do i @ + cell +loop ;
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
let values = [1..10] sum values -- the easy way foldl (+) 0 values -- the hard way
IDL
result = total(array)
Java
int value = 0; int[] arg = new int[] { 1,2,3,4,5 }; for (int i: arg) value += i;
JavaScript
var array = [1, 2, 3, 4, 5]; var sum = 0; for(var i in array) sum += array[i];
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
$list = array(1,2,3,4,5,6,7,8,9); echo array_sum($list);
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
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
Interpeter: Python 2.5
total = sum([1, 2, 3, 4, 5, 6, 7, 8, 9])
Ruby
ary = [1,2,3,4,5] sum = ary.inject{|currentSum,element|currentSum+element} # => 15
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
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
val array = [1,2,3,4,5]; foldl op+ 0 array;
Tcl
Assuming the values are in a list named listname:
set result [expr [join $listname +]]
Toka
[ ( array size -- sum ) >r 0 r> [ over i swap get-element + ] iterate nip ] is sum-array
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