feat: add typescript solution to lc problem: No.0901.Online Stock Span

Author: zhaocchen

solution/0900-0999/0901.Online Stock Span/README.md

@@ -115,6 +115,33 @@ class StockSpanner {
  */
 ```
 
+### **TypeScript**
+
+```ts
+class StockSpanner {
+    stack: number[][];
+    constructor() {
+        this.stack = [];
+    }
+
+    next(price: number): number {
+        let ans = 1;
+        while (this.stack.length > 0 && this.stack[0][0] <= price) {
+            let [p, c] = this.stack.shift();
+            ans += c;
+        }
+        this.stack.unshift([price, ans]);
+        return ans;
+    }
+}
+
+/**
+ * Your StockSpanner object will be instantiated and called as such:
+ * var obj = new StockSpanner()
+ * var param_1 = obj.next(price)
+ */
+```
+
 ### **C++**
 
 ```cpp

solution/0900-0999/0901.Online Stock Span/README_EN.md

@@ -132,6 +132,33 @@ class StockSpanner {
  */
 ```
 
+### **TypeScript**
+
+```ts
+class StockSpanner {
+    stack: number[][];
+    constructor() {
+        this.stack = [];
+    }
+
+    next(price: number): number {
+        let ans = 1;
+        while (this.stack.length > 0 && this.stack[0][0] <= price) {
+            let [p, c] = this.stack.shift();
+            ans += c;
+        }
+        this.stack.unshift([price, ans]);
+        return ans;
+    }
+}
+
+/**
+ * Your StockSpanner object will be instantiated and called as such:
+ * var obj = new StockSpanner()
+ * var param_1 = obj.next(price)
+ */
+```
+
 ### **C++**
 
 ```cpp

solution/0900-0999/0901.Online Stock Span/Solution.ts

@@ -0,0 +1,22 @@
+class StockSpanner {
+    stack: number[][];
+    constructor() {
+        this.stack = [];
+    }
+
+    next(price: number): number {
+        let ans = 1;
+        while (this.stack.length > 0 && this.stack[0][0] <= price) {
+            let [p, c] = this.stack.shift();
+            ans += c;
+        }
+        this.stack.unshift([price, ans]);
+        return ans;
+    }
+}
+
+/**
+ * Your StockSpanner object will be instantiated and called as such:
+ * var obj = new StockSpanner()
+ * var param_1 = obj.next(price)
+ */