Sum of squares: Difference between revisions
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=={{header|Java}}== |
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Assume the numbers are in an array called "nums". |
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... |
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int sum = 0; |
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for(int a:nums){ |
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sum+= a * a; |
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} |
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System.out.println("The sum of the squares is: " + sum); |
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... |
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Revision as of 17:55, 11 December 2007
You are encouraged to solve this task according to the task description, using any language you may know.
Write a program to find the sum of squares of a numeric vector. The program should work on a zero-length vector (with an answer of 0).
J
ss=: +/ @: *:
That is, sum composed with square. The verb also works on higher-ranked arrays. For example:
ss 3 1 4 1 5 9 133 ss $0 NB. $0 is a zero-length vector 0 x=: 20 4 ?@$ 0 NB. a 20-by-4 table of random (0,1) numbers ss x 9.09516 5.19512 5.84173 6.6916
Java
Assume the numbers are in an array called "nums".
...
int sum = 0;
for(int a:nums){
sum+= a * a;
}
System.out.println("The sum of the squares is: " + sum);
...