Update 664-strange-printer.js

Author: everthis

664-strange-printer.js

@@ -3,6 +3,12 @@
  * @return {number}
  */
 const strangePrinter = function(s) {
+  // optimize
+  const arr = s.split('')
+  for(let i = 1; i < arr.length; i++) {
+    if(arr[i] === arr[i - 1]) arr[i - 1] = ''
+  }
+  s = arr.join('')
   let n = s.length
   let dp = new Array(n).fill(0).map(() => new Array(n).fill(0))
 
@@ -13,7 +19,7 @@ const strangePrinter = function(s) {
     }
     let res = help(s, i, j - 1) + 1
     for (let k = i; k < j; k++) {
-      if (s[k] == s[j]) {
+      if (s[k] === s[j]) {
         res = Math.min(help(s, i, k) + help(s, k + 1, j - 1), res)
       }
     }