Sum of Array: Difference between revisions
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#REDIRECT [[Sum and product of an array]] |
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{{task}} |
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Compute the sum of the elements of an Array |
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==[[4D]]== |
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[[Category:4D]] |
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ARRAY INTEGER($list;0) |
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For ($i;1;5) |
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APPEND TO ARRAY($list;$i) |
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End for |
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$var:=0 |
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For ($i;1;Size of array($list)) |
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$var:=$var+$list{$i} |
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End for |
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==[[Ada]]== |
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[[Category:Ada]] |
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Int_Array : array(1..10) of Integer := (1,2,3,4,5,6,7,8,9,10); |
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Sum : Integer := 0; |
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for I in Int_Array'range loop |
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Sum := Sum + Int_Array(I); |
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end loop; |
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==[[AppleScript]]== |
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[[Category:AppleScript]] |
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set array to {1, 2, 3, 4, 5} |
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set product to 0 |
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repeat with i in array |
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-- very important -- list index starts at 1 not 0 |
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set product to product + i |
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end repeat |
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==[[BASIC]]== |
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[[Category:BASIC]] |
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10 REM Create an array with some test data in it |
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20 DIM ARRAY(5) |
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30 FOR I = 1 TO 5: READ ARRAY(I): NEXT I |
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40 DATA 1, 2, 3, 4, 5 |
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50 REM Find the sum of elements in the array |
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60 SUM = 0 |
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70 FOR I = 1 TO 5: SUM = SUM + ARRAY(I): NEXT I |
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80 PRINT "The sum is ";SUM |
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==[[C plus plus|C++]]== |
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[[Category:C plus plus]] |
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'''Compiler:''' [[GNU Compiler Collection|gcc]] 4.0.2 |
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int |
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main( int argc, char* argv[] ) |
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{ |
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int list[] = { 1, 2, 3 } ; |
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int sum = 0 ; |
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for( int i = 0 ; i < 3 ; i++ ) |
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{ |
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sum += list[i]; |
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} |
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} |
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Alternate |
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#include <numeric> |
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int |
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main( int argc, char* argv[] ) |
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{ |
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int list[] = { 1, 2, 3 } ; |
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std::accumulate(list, list + 3, 0); |
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return 0; |
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} |
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template alternative |
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template <typename T> T sum (const T *array, const unsigned n) |
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{ |
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T accum = 0; |
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for (unsigned i=0; i<n; i++) |
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accum += array[i]; |
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return accum; |
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} |
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#include <iostream> |
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using std::cout; |
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using std::endl; |
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int main (void) |
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{ |
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int aint[] = {1, 2, 3}; |
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cout << sum(aint,3) << endl; |
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float aflo[] = {1.1, 2.02, 3.003, 4.0004}; |
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cout << sum(aflo,4) << endl; |
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return 0; |
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} |
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==[[C sharp|C#]]== |
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[[Category:C sharp|C#]] |
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int value = 0; |
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int[] arg = { 1,2,3,4,5 }; |
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int arg_length = arg.Length; |
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for( int i = 0; i < arg_length; i++ ) |
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value += arg[i]; |
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Alternate |
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int sum = 0; |
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int[] arg = { 1, 2, 3, 4, 5 }; |
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foreach (int value in arg) sum += value; |
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==[[Clean]]== |
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[[Category:Clean]] |
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array = {1, 2, 3, 4, 5} |
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Start = sum [x \\ x <-: array] |
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==[[ColdFusion]]== |
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[[Category:ColdFusion]] |
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<cfset myArray = listToArray("1,2,3,4,5")> |
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#arraySum(myArray)# |
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==[[Common Lisp]]== |
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[[Category:Common Lisp]] |
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(defparameter *data* #(1 2 3 4 5)) |
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(reduce #'+ *data*) |
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==[[Delphi]]== |
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[[Category:Delphi] |
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'''Compiler:''' [[All]] |
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var |
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Ints : array[1..5] of integer = (1,2,3,4,5) ; |
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i,Sum : integer = 0 ; |
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begin |
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for i := 1 to length(ints) do inc(sum,ints[i]) ; |
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end; |
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==[[E]]== |
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[[Category:E]] |
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pragma.enable("accumulator") |
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accum 0 for x in [1,2,3,4,5] { _ + x } |
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==[[Erlang]]== |
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[[Category:Erlang]] |
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Using the standard libraries: |
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% create the list: |
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L = lists:seq(1, 10). |
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% and compute its sum: |
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S = lists:sum(L). |
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Or defining our own versions: |
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-module(list_sum). |
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-export([sum_rec/1, sum_tail/1]). |
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% recursive definition: |
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sum_rec([]) -> |
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0; |
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sum_rec([Head|Tail]) -> |
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Head + sum_rec(Tail). |
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% tail-recursive definition: |
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sum_tail(L) -> |
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sum_tail(L, 0). |
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sum_tail([], Acc) -> |
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Acc; |
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sum_tail([Head|Tail], Acc) -> |
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sum_tail(Tail, Head + Acc). |
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==[[Forth]]== |
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[[Category:Forth]] |
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: sum ( addr cnt -- n ) |
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0 -rot |
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cells bounds do i @ + cell +loop ; |
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==[[FreeBASIC]]== |
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[[Category:FreeBASIC]] |
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dim array(4) as integer = { 1, 2, 3, 4, 5 } |
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dim sum as integer = 0 |
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for index as integer = lbound(array) to ubound(array) |
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sum += array(index) |
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next |
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==[[Haskell]]== |
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[[Category:Haskell]] |
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let values = [1..10] |
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sum values -- the easy way |
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foldl (+) 0 values -- the hard way |
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==[[IDL]]== |
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[[Category:IDL]] |
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result = total(array) |
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==[[Java]]== |
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[[Category:Java]] |
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int value = 0; |
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int[] arg = new int[] { 1,2,3,4,5 }; |
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for (int i: arg) |
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value += i; |
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==[[JavaScript]]== |
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[[Category:JavaScript]] |
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var array = [1, 2, 3, 4, 5]; |
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var sum = 0; |
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for(var i in array) |
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sum += array[i]; |
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==[[Perl]]== |
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[[Category:Perl]] |
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'''Interpeter:''' [[Perl]] |
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my $var; |
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my @list = (1, 2, 3); |
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$var += $_ for (@list); |
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Alternate |
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'''Libraries:''' List::Util |
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use List::Util 'sum'; |
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my @list = (1, 2, 3); |
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my $var = sum @list; |
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Alternate |
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'''# TMTOWTDI''' |
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my $acc = 0; |
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my @list = qw(1 2 3) |
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map { $acc += $_ } @list |
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==[[PHP]]== |
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[[Category:PHP]] |
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$list = array(1,2,3,4,5,6,7,8,9); |
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echo array_sum($list); |
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==[[Pop11]]== |
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[[Category:Pop11]] |
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Simple loop: |
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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 |
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ar(i) + sum -> sum; |
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endfor; |
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One can alternativly use second order iterator: |
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lvars sum = 0, ar = {1 2 3 4 5 6 7 8 9}; |
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appdata(ar, procedure(x); x + sum -> sum; endprocedure); |
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==[[Prolog]]== |
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[[Category:Prolog]] |
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sum([],0). |
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sum([H|T],X) :- sum(T,Y), X is H + Y. |
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test |
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:- sum([1,2,3,4,5,6,7,8,9],X). |
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X =45; |
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==[[Python]]== |
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[[Category:Python]] |
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'''Interpeter:''' [[Python]] 2.5 |
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total = sum([1, 2, 3, 4, 5, 6, 7, 8, 9]) |
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==[[Ruby]]== |
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[[Category:Ruby]] |
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ary = [1,2,3,4,5] |
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sum = ary.inject{|currentSum,element|currentSum+element} |
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# => 15 |
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== [[Scala]]== |
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[[Category:Scala]] |
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val array = Array(1,2,3,4,5) |
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val sum = array.foldLeft(0)(_ + _) |
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This is a shortcut for |
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val sum = array.foldLeft(0){(currentSum, element) => currentSum + element} |
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==[[Seed7]]== |
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[[Category:Seed7]] |
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const func integer: sumArray (in array integer: valueArray) is func |
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result |
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var integer: sum is 0; |
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local |
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var integer: value is 0; |
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begin |
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for value range valueArray do |
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sum +:= value; |
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end for; |
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end func; |
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Call this function with: |
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writeln(sumArray([](1, 2, 3, 4, 5))); |
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==[[Standard ML]]== |
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[[Category:Standard ML]] |
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val array = [1,2,3,4,5]; |
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foldl op+ 0 array; |
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==[[Tcl]]== |
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[[Category:Tcl]] |
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Assuming the values are in a list named <tt>listname</tt>: |
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set result [expr [join $listname +]] |
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==[[Toka]]== |
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[[Category:Toka]] |
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[ ( array size -- sum ) |
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>r 0 r> [ over i swap get-element + ] iterate nip ] is sum-array |
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==[[UNIX Shell]]== |
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[[Category:UNIX Shell]] |
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'''Interpreter:''' NetBSD 3.0's ash |
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From an internal variable, $IFS delimited: |
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sum=0 |
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list="1 2 3" |
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for n in $list |
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do sum="$(($sum + $n))" |
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done |
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echo $sum |
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From the argument list (ARGV): |
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sum=0 |
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for n |
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do sum="$(($sum + $n))" |
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done |
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echo $sum |
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From STDIN, one integer per line: |
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sum=0 |
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while read n |
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do sum="$(($sum + $n))" |
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done |
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echo $sum |
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'''Interpreter:''' GNU bash, version 3.2.0(1)-release (i386-unknown-freebsd6.1) |
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From variable: |
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LIST='20 20 2'; |
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SUM=0; |
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for i in $LIST; do |
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SUM=$[$SUM + $i]; |
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done; |
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echo $SUM |
Latest revision as of 08:39, 2 July 2010
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