Decode Ways Leetcode
Problem Statement A message containing letters from A-Z is being encoded to numbers using the following mapping: 'A' -> 1 'B' -> 2 ... 'Z' -> 26 Given an encoded message containing digits,…
Posts tagged with Leetcode Medium
Letter Combinations of a Phone Number
Problem Statement Given a digit string, return all possible letter combinations that the number could represent. Input:Digit string "23" Output: ["ad", "ae", "af", "bd"…
Binary Tree Vertical Order Traversal Leetcode
Problem Statement Given a binary tree, return the vertical order traversal of its nodes' values. (ie, from top to bottom, column by column). Solution Explanation Given a binary tree, 35 / \ 23 27 / \ \ 14 10 9…
Sparse Matrix Multiplication
Problem Statement Given two sparse matrices A and B, return the result of AB. You may assume that A's column number is equal to B's row number. Solution Explanation A sparse matrix is a matrix…
Maximum Size Subarray Sum Equals K Leetcode
Maximum Size Subarray Sum Equals K Leetcode…