fix: ts Map usage

No.0560.Subarray Sum Equals K

Author: YangFong

solution/0500-0599/0560.Subarray Sum Equals K/README.md

@@ -82,12 +82,12 @@ class Solution {
 function subarraySum(nums: number[], k: number): number {
     let ans = 0,
         s = 0;
-    let counter = new Map();
-    counter[0] = 1;
+    const counter = new Map();
+    counter.set(0, 1);
     for (const num of nums) {
         s += num;
-        ans += counter[s - k] || 0;
-        counter[s] = (counter[s] || 0) + 1;
+        ans += counter.get(s - k) || 0;
+        counter.set(s, (counter.get(s) || 0) + 1);
     }
     return ans;
 }

solution/0500-0599/0560.Subarray Sum Equals K/README_EN.md

@@ -65,12 +65,12 @@ class Solution {
 function subarraySum(nums: number[], k: number): number {
     let ans = 0,
         s = 0;
-    let counter = new Map();
-    counter[0] = 1;
+    const counter = new Map();
+    counter.set(0, 1);
     for (const num of nums) {
         s += num;
-        ans += counter[s - k] || 0;
-        counter[s] = (counter[s] || 0) + 1;
+        ans += counter.get(s - k) || 0;
+        counter.set(s, (counter.get(s) || 0) + 1);
     }
     return ans;
 }

solution/0500-0599/0560.Subarray Sum Equals K/Solution.ts

@@ -1,12 +1,12 @@
 function subarraySum(nums: number[], k: number): number {
     let ans = 0,
         s = 0;
-    let counter = new Map();
-    counter[0] = 1;
+    const counter = new Map();
+    counter.set(0, 1);
     for (const num of nums) {
         s += num;
-        ans += counter[s - k] || 0;
-        counter[s] = (counter[s] || 0) + 1;
+        ans += counter.get(s - k) || 0;
+        counter.set(s, (counter.get(s) || 0) + 1);
     }
     return ans;
 }