feat: add ts solution to lc problem: No. 1653

Author: rain84

solution/1600-1699/1653.Minimum Deletions to Make String Balanced/README.md

@@ -397,6 +397,30 @@ function minimumDeletions(s: string): number {
 }
 ```
 
+<!-- solution:start -->
+
+### Solution 4: Stack
+
+<!-- tabs:start -->
+
+#### TypeScript
+
+```ts
+function minimumDeletions(s: string): number {
+    const stk: string[] = [];
+    let res = 0;
+
+    for (const ch of s) {
+        if (stk.at(-1) === 'b' && ch === 'a') {
+            stk.pop();
+            res++;
+        } else stk.push(ch);
+    }
+
+    return res;
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/1600-1699/1653.Minimum Deletions to Make String Balanced/README_EN.md

@@ -399,4 +399,32 @@ function minimumDeletions(s: string): number {
 
 <!-- solution:end -->
 
+<!-- solution:start -->
+
+### Solution 4: Stack
+
+<!-- tabs:start -->
+
+#### TypeScript
+
+```ts
+function minimumDeletions(s: string): number {
+    const stk: string[] = [];
+    let res = 0;
+
+    for (const ch of s) {
+        if (stk.at(-1) === 'b' && ch === 'a') {
+            stk.pop();
+            res++;
+        } else stk.push(ch);
+    }
+
+    return res;
+}
+```
+
+<!-- tabs:end -->
+
+<!-- solution:end -->
+
 <!-- problem:end -->

solution/1600-1699/1653.Minimum Deletions to Make String Balanced/Solution4.ts

@@ -0,0 +1,13 @@
+function minimumDeletions(s: string): number {
+    const stk: string[] = [];
+    let res = 0;
+
+    for (const ch of s) {
+        if (stk.at(-1) === 'b' && ch === 'a') {
+            stk.pop();
+            res++;
+        } else stk.push(ch);
+    }
+
+    return res;
+}