Create 1844-replace-all-digits-with-characters.js

Author: everthis

1844-replace-all-digits-with-characters.js

@@ -0,0 +1,16 @@
+/**
+ * @param {string} s
+ * @return {string}
+ */
+const replaceDigits = function(s) {
+  let arr = s.split('')
+  for(let i = 1; i < s.length; i += 2) {
+    arr[i] = shift(s[i - 1], +s[i])
+  }
+
+  return arr.join('')
+
+  function shift(ch, x) {
+    return String.fromCharCode(ch.charCodeAt(0) + x)
+  }
+};