Random Substitution Cipher

random-substitution-cipher/index.js

@@ -0,0 +1,7 @@
+// https://www.codewars.com/kata/random-substitution-cipher/javascript
+
+function randomSub() {
+  const alph = 'abcdefghijklmnopqrstuvwxyz'.split``;
+  const rnd = alph.slice().sort(() => Math.random()-0.5);
+  return alph.reduce((res, k, i) => (res[k] = rnd[i], res), {});
+}