feat: add ts solution to lc problem: No.1701 (doocs#2510)

No.1701.Average Waiting Time

Author: yanglbme

.gitignore

@@ -3,8 +3,9 @@
 .vscode
 .temp
 .cache
+*.iml
+__pycache__
 /node_modules
 /solution/result.json
 /solution/__pycache__
-/solution/.env
-*.iml
+/solution/.env

solution/1700-1799/1701.Average Waiting Time/README.md

@@ -125,6 +125,17 @@ func averageWaitingTime(customers [][]int) float64 {
 }
 ```
 
+```ts
+function averageWaitingTime(customers: number[][]): number {
+    let [tot, t] = [0, 0];
+    for (const [a, b] of customers) {
+        t = Math.max(t, a) + b;
+        tot += t - a;
+    }
+    return tot / customers.length;
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

solution/1700-1799/1701.Average Waiting Time/README_EN.md

@@ -121,6 +121,17 @@ func averageWaitingTime(customers [][]int) float64 {
 }
 ```
 
+```ts
+function averageWaitingTime(customers: number[][]): number {
+    let [tot, t] = [0, 0];
+    for (const [a, b] of customers) {
+        t = Math.max(t, a) + b;
+        tot += t - a;
+    }
+    return tot / customers.length;
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

solution/1700-1799/1701.Average Waiting Time/Solution.ts

@@ -0,0 +1,8 @@
+function averageWaitingTime(customers: number[][]): number {
+    let [tot, t] = [0, 0];
+    for (const [a, b] of customers) {
+        t = Math.max(t, a) + b;
+        tot += t - a;
+    }
+    return tot / customers.length;
+}