feat: add typescript solution to lc problem: No.2185

No.2185.Counting Words With a Given Prefix

Author: zhaocchen

solution/2100-2199/2185.Counting Words With a Given Prefix/README.md

@@ -63,6 +63,16 @@
 ### **TypeScript**
 
 ```ts
+function prefixCount(words: string[], pref: string): number {
+    const n = pref.length;
+    let ans = 0;
+    for (let str of words) {
+        if (str.substring(0, n) == pref) {
+            ans++;
+        }
+    }
+    return ans;
+};
 ```
 
 ### **...**

solution/2100-2199/2185.Counting Words With a Given Prefix/README_EN.md

@@ -55,6 +55,16 @@
 ### **TypeScript**
 
 ```ts
+function prefixCount(words: string[], pref: string): number {
+    const n = pref.length;
+    let ans = 0;
+    for (let str of words) {
+        if (str.substring(0, n) == pref) {
+            ans++;
+        }
+    }
+    return ans;
+};
 ```
 
 ### **...**

solution/2100-2199/2185.Counting Words With a Given Prefix/Solution.ts

@@ -0,0 +1,10 @@
+function prefixCount(words: string[], pref: string): number {
+    const n = pref.length;
+    let ans = 0;
+    for (let str of words) {
+        if (str.substring(0, n) == pref) {
+            ans++;
+        }
+    }
+    return ans;
+};