Create 1323-maximum-69-number.js

Author: everthis

1323-maximum-69-number.js

@@ -0,0 +1,14 @@
+/**
+ * @param {number} num
+ * @return {number}
+ */
+var maximum69Number  = function(num) {
+  const arr = (num+'').split('')
+  for(let i = 0; i < arr.length; i++) {
+    if(arr[i] === '6') {
+      arr[i] = '9'
+      break
+    }
+  }
+  return arr.join('')
+};