incorrenct

Author: amejiarosario

stringCompression.js

@@ -0,0 +1,15 @@
+function stringCompression(s){
+  let map = new Map();
+
+  for(const c of s){
+    map.set(c, (map.get(c) || 0) + 1);
+  }
+
+  let compressed = Array.from(map.entries()).reduce((p, c) => p.concat(c), []).join('');
+
+  return (compressed.length < s.length) ? compressed : s;
+}
+
+console.log(stringCompression('abc')); // abc
+console.log(stringCompression('abb')); // abb
+console.log(stringCompression('aabcccccaaa')); // a2blc5a3