Create 1271-hexspeak.js

Author: everthis

1271-hexspeak.js

@@ -0,0 +1,15 @@
+/**
+ * @param {string} num
+ * @return {string}
+ */
+var toHexspeak = function(num) {
+  const hex = ((+num)).toString(16).toUpperCase()
+  let res = ''
+  for(let ch of hex) {
+    if(ch > '1' && ch <= '9') return 'ERROR'
+    else if(ch === '0') res += 'O'
+    else if(ch === '1') res += 'I'
+    else res += ch
+  }
+  return res
+};