Update Solution.js

Author: yanglbme

solution/2700-2799/2707.Extra Characters in a String/Solution.js

@@ -3,17 +3,17 @@
  * @param {string[]} dictionary
  * @return {number}
  */
-var minExtraChar = function(s, dictionary) {
+var minExtraChar = function (s, dictionary) {
     const ss = new Set(dictionary);
     const n = s.length;
-    const f = new Array(n + 1).fill(0);
+    const f = Array(n + 1).fill(0);
     for (let i = 1; i <= n; ++i) {
         f[i] = f[i - 1] + 1;
         for (let j = 0; j < i; ++j) {
-            if (ss.has(s.substring(j, i))) {
+            if (ss.has(s.slice(j, i))) {
                 f[i] = Math.min(f[i], f[j]);
             }
         }
     }
-    return f[n];
+    return f[n];
 };