Data commit

Task/Sum-of-squares/JavaScript/sum-of-squares-1.js

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+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;
+}
+
+alert(sumsq([1,2,3,4,5]));  // 55

Task/Sum-of-squares/JavaScript/sum-of-squares-2.js

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+function sumsq(array) {
+  var sum = 0,
+      i = array.length;
+
+  while (i--) sum += Math.pow(array[i], 2);
+
+  return sum;
+}
+
+alert(sumsq([1,2,3,4,5])); // 55

Task/Sum-of-squares/JavaScript/sum-of-squares-3.js

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+Functional.reduce("x+y*y", 0, [1,2,3,4,5])

Task/Sum-of-squares/JavaScript/sum-of-squares-4.js

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+[3,1,4,1,5,9].map(function (n) { return Math.pow(n,2); }).reduce(function (sum,n) { return sum+n; });

Task/Sum-of-squares/JavaScript/sum-of-squares-5.js

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+(() => {
+    'use strict';
+
+    // sumOfSquares :: Num a => [a] -> a
+    const sumOfSquares = xs =>
+        sum(xs.map(squared));
+
+    // sumOfSquares2 :: Num a => [a] -> a
+    const sumOfSquares2 = xs =>
+        xs.reduce((a, x) => a + squared(x), 0);
+
+
+    // ---------------------- TEST -----------------------
+    const main = () => [
+        sumOfSquares,
+        sumOfSquares2
+    ].map(
+        f => f([3, 1, 4, 1, 5, 9])
+    ).join('\n');
+
+
+    // --------------------- GENERIC ---------------------
+
+    // squared :: Num a => a -> a
+    const squared = x =>
+        Math.pow(x, 2);
+
+    // sum :: [Num] -> Num
+    const sum = xs =>
+        // The numeric sum of all values in xs.
+        xs.reduce((a, x) => a + x, 0);
+
+    // MAIN ---
+    return main();
+})();