feat: add ts solution to lc problem: No.2805 (doocs#1386)

No.2805.Custom Interval

Author: yanglbme

solution/2800-2899/2805.Custom Interval/README.md

@@ -78,7 +78,32 @@ setTimeout(() => {
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```ts
+const intervalMap = new Map<number, NodeJS.Timeout>();
+
+function customInterval(fn: Function, delay: number, period: number): number {
+    let count = 0;
+    function recursiveTimeout() {
+        intervalMap.set(
+            id,
+            setTimeout(() => {
+                fn();
+                count++;
+                recursiveTimeout();
+            }, delay + period * count),
+        );
+    }
+
+    const id = Date.now();
+    recursiveTimeout();
+    return id;
+}
 
+function customClearInterval(id: number) {
+    if (intervalMap.has(id)) {
+        clearTimeout(intervalMap.get(id)!);
+        intervalMap.delete(id);
+    }
+}
 ```
 
 <!-- tabs:end -->

solution/2800-2899/2805.Custom Interval/README_EN.md

@@ -72,7 +72,32 @@ setTimeout(() => {
 ### **TypeScript**
 
 ```ts
+const intervalMap = new Map<number, NodeJS.Timeout>();
+
+function customInterval(fn: Function, delay: number, period: number): number {
+    let count = 0;
+    function recursiveTimeout() {
+        intervalMap.set(
+            id,
+            setTimeout(() => {
+                fn();
+                count++;
+                recursiveTimeout();
+            }, delay + period * count),
+        );
+    }
+
+    const id = Date.now();
+    recursiveTimeout();
+    return id;
+}
 
+function customClearInterval(id: number) {
+    if (intervalMap.has(id)) {
+        clearTimeout(intervalMap.get(id)!);
+        intervalMap.delete(id);
+    }
+}
 ```
 
 <!-- tabs:end -->

solution/2800-2899/2805.Custom Interval/Solution.ts

@@ -0,0 +1,26 @@
+const intervalMap = new Map<number, NodeJS.Timeout>();
+
+function customInterval(fn: Function, delay: number, period: number): number {
+    let count = 0;
+    function recursiveTimeout() {
+        intervalMap.set(
+            id,
+            setTimeout(() => {
+                fn();
+                count++;
+                recursiveTimeout();
+            }, delay + period * count),
+        );
+    }
+
+    const id = Date.now();
+    recursiveTimeout();
+    return id;
+}
+
+function customClearInterval(id: number) {
+    if (intervalMap.has(id)) {
+        clearTimeout(intervalMap.get(id)!);
+        intervalMap.delete(id);
+    }
+}