Update 996-number-of-squareful-arrays.js

Author: everthis

996-number-of-squareful-arrays.js

@@ -3,43 +3,43 @@
  * @return {number}
  */
 
-const numSquarefulPerms = function(A) {
-  const cntMap = {};
-  const squareMap = {};
-  let cnt = 0;
+const numSquarefulPerms = function (A) {
+  const cntMap = {}
+  const squareMap = {}
+  let cnt = 0
   for (let num of A) {
     if (!cntMap.hasOwnProperty(num)) {
-      cntMap[num] = 1;
-      squareMap[num] = new Set();
+      cntMap[num] = 1
+      squareMap[num] = new Set()
     } else {
-      cntMap[num] = cntMap[num] + 1;
+      cntMap[num] = cntMap[num] + 1
     }
   }
 
   for (let num1 of Object.keys(cntMap)) {
     for (let num2 of Object.keys(cntMap)) {
-      let c = Math.sqrt(+num1 + +num2);
+      let c = Math.sqrt(+num1 + +num2)
       if (c === Math.floor(c)) {
-        squareMap[num1].add(+num2);
-        squareMap[num2].add(+num1);
+        squareMap[num1].add(+num2)
+        squareMap[num2].add(+num1)
       }
     }
   }
   for (let num of Object.keys(cntMap)) {
-    countPerm(num, A.length - 1);
+    countPerm(num, A.length - 1)
   }
-  return cnt;
+  return cnt
   function countPerm(num, left) {
-    cntMap[num] = cntMap[num] - 1;
+    cntMap[num] = cntMap[num] - 1
     if (left === 0) {
-      cnt++;
+      cnt++
     } else {
       for (let next of squareMap[num]) {
         if (cntMap[next] !== 0) {
-          countPerm(next, left - 1);
+          countPerm(next, left - 1)
         }
       }
     }
-    cntMap[num] = cntMap[num] + 1;
+    cntMap[num] = cntMap[num] + 1
   }
-};
+}