2016 Update

Task/Knuth-shuffle/JavaScript/knuth-shuffle-1.js

@@ -0,0 +1,25 @@
+function knuthShuffle(arr) {
+    var rand, temp, i;
+
+    for (i = arr.length - 1; i > 0; i -= 1) {
+        rand = Math.floor((i + 1) * Math.random());//get random between zero and i (inclusive)
+        temp = arr[rand];//swap i and the zero-indexed number
+        arr[rand] = arr[i];
+        arr[i] = temp;
+    }
+    return arr;
+}
+
+var res = {
+    '1,2,3': 0, '1,3,2': 0,
+    '2,1,3': 0, '2,3,1': 0,
+    '3,1,2': 0, '3,2,1': 0
+};
+
+for (var i = 0; i < 100000; i++) {
+    res[knuthShuffle([1,2,3]).join(',')] += 1;
+}
+
+for (var key in res) {
+    print(key + "\t" + res[key]);
+}