feat: encode-and-decode-strings

Author: soobing

encode-and-decode-strings/soobing3.ts

@@ -0,0 +1,25 @@
+class Solution {
+  /**
+   * @param {string[]} strs
+   * @returns {string}
+   */
+  encode(strs) {
+      return strs.map((str) => `${str.length}#${str}`).join('');
+  }
+
+  /**
+   * @param {string} str
+   * @returns {string[]}
+   */
+  decode(str) {
+      const result: string[] = [];
+      let i = 0;
+      while(i < str.length) {
+          const j = str.indexOf('#', i);
+          const length = Number(str.slice(i, j));
+          result.push(str.slice(j + 1, j + 1 + length));
+          i = j + 1 + length;
+      }
+      return result;
+  }
+}