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Sum of squares

curriculum/challenges/english/blocks/rosetta-code-challenges/5a23c84252665b21eecc8042.md

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--description--

Write a function to find the sum of squares of an array of integers.

--hints--

sumsq should be a function.

js
assert(typeof sumsq == 'function');

sumsq([1, 2, 3, 4, 5]) should return a number.

js
assert(typeof sumsq([1, 2, 3, 4, 5]) == 'number');

sumsq([1, 2, 3, 4, 5]) should return 55.

js
assert.equal(sumsq([1, 2, 3, 4, 5]), 55);

sumsq([25, 32, 12, 7, 20]) should return 2242.

js
assert.equal(sumsq([25, 32, 12, 7, 20]), 2242);

sumsq([38, 45, 35, 8, 13]) should return 4927.

js
assert.equal(sumsq([38, 45, 35, 8, 13]), 4927);

sumsq([43, 36, 20, 34, 24]) should return 5277.

js
assert.equal(sumsq([43, 36, 20, 34, 24]), 5277);

sumsq([12, 33, 26, 18, 1, 16, 3]) should return 2499.

js
assert.equal(sumsq([12, 33, 26, 18, 1, 16, 3]), 2499);

--seed--

--seed-contents--

js
function sumsq(array) {

}

--solutions--

js
function sumsq(array) {
  var sum = 0;
  var i, iLen;

  for (i = 0, iLen = array.length; i < iLen; i++) {
    sum += array[i] * array[i];
  }
  return sum;
}