https://leetcode.cn/problems/check-if-the-sentence-is-pangram/

Author: masx200

README.md

@@ -45,6 +45,8 @@ Step 2. Add the dependency
 
 <summary>展开查看</summary>
 
+https://leetcode.cn/problems/check-if-the-sentence-is-pangram/
+
 https://leetcode-cn.com/problems/sum-of-beauty-of-all-substrings/
 
 https://leetcode-cn.com/problems/maximum-value-of-a-string-in-an-array/

check-if-the-sentence-is-pangram/index.ts

@@ -0,0 +1,4 @@
+function checkIfPangram(sentence: string): boolean {
+    return 26 === new Set(sentence).size;
+}
+export default checkIfPangram;

snapshot-array/index.ts

@@ -1,22 +1,22 @@
 class SnapshotArray {
-    shot: number;
-    map: Map<string, number>;
+    #shot: number;
+    #map: Map<string, number>;
     constructor(_length: number) {
-        this.shot = 0;
-        this.map = new Map();
+        this.#shot = 0;
+        this.#map = new Map();
     }
 
     set(index: number, val: number): void {
-        this.map.set(`${this.shot}-${index}`, val);
+        this.#map.set(`${this.#shot}-${index}`, val);
     }
 
     snap(): number {
-        return this.shot++;
+        return this.#shot++;
     }
 
     get(index: number, snap_id: number): number {
         for (let i = snap_id; i >= 0; i--) {
-            const val = this.map.get(`${i}-${index}`);
+            const val = this.#map.get(`${i}-${index}`);
             if (val !== undefined) {
                 return val;
             }