89

swolecoder · swolecoder · commit 24dcdc55d66d · 2021-01-04T22:37:47.000-05:00
diff --git a/Day89/index.js b/Day89/index.js
@@ -0,0 +1,44 @@
+/**
+ * @param {string} digits
+ * @return {string[]}
+ */
+var letterCombinations = function(digits) {
+
+    let letters = {
+       2: ['a', 'b', 'c'],
+       3: ['d', 'e', 'f'],
+       4: ['g', 'h', 'i'],
+       5: ['j', 'k', 'l'],
+       6: ['m', 'n', 'o'],
+       7: ['p', 'q', 'r', 's'],
+       8: ['t', 'u', 'v'],
+       9: ['w', 'x', 'y', 'z'],
+   }
+   let queue = [];
+   queue = [" "];
+
+   if(!digits)return [];
+
+
+   for(let i=0; i < digits.length; i++){
+        let digit = digits[i]
+
+        let n = queue.length;
+
+       for(let j=0; j < n; j++){
+
+           let lookUp = letters[digit];
+           let pop = queue.shift();
+           for(let k =0; k < lookUp.length; k++){
+
+               let newData = pop + lookUp[k]
+               queue.push(newData.trim())
+
+           }
+
+       }
+
+   }
+  return queue
+
+};
diff --git a/README.md b/README.md
@@ -196,4 +196,6 @@ If you are loving solving problems in leetcode, please contact me to enjoy it to
 
 |Day 87| [1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree](https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree/) | [javascript]()|[:memo:](https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree/)|Medium|
 
-|Day 88| [526. Beautiful Arrangement](https://leetcode.com/problems/beautiful-arrangement/) | [javascript]()|[:memo:](https://leetcode.com/problems/beautiful-arrangement/)|Medium|
+|Day 88| [526. Beautiful Arrangement](https://leetcode.com/problems/beautiful-arrangement/) | [javascript]()|[:memo:](https://leetcode.com/problems/beautiful-arrangement/)|Medium|
+
+|Day 89| [17. Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/) | [javascript]()|[:memo:](https://leetcode.com/problems/letter-combinations-of-a-phone-number/)|Medium|
