Day 23 of 30 days Leetcode challenge - Bitwise AND of Numbers Range
Bitwise AND of Numbers Range Given a range [m, n] where 0 <= m <= n <= 2147483647, return ...
#30 days challenge
Day 22 of 30 days Leetcode challenge - Subarray Sum Equals K
Subarray Sum Equals K Given an array of integers and an integer k, you need to find the total numbe ...
Day 21 of 30 days Leetcode challenge
Leftmost Column with at Least a One (This problem is an interactive problem.) A binary matrix mean ...
Day 20 of 30 days Leetcode challenge - Construct Binary Search Tree from Preorder Traversal
Construct Binary Search Tree from Preorder Traversal Return the root node of a binary search tree t ...
Day 19 of 30 days Leetcode challenge - Search in Rotated Sorted Array
Search in Rotated Sorted Array Suppose an array sorted in ascending order is rotated at some pivot ...
Day 18 of 30 days Leetcode challenge - Minimum Path Sum
Minimum Path Sum Given a m x n grid filled with non-negative numbers, find a path from top left to ...
Day 17 of 30 days Leetcode challenge - Number of Islands
Number of Islands Given a 2d grid map of '1's (land) and '0's (water), count the number of islands. ...
Day 16 of 30 days Leetcode Challenge - Valid Parenthesis String
Valid Parenthesis String Given a string containing only three types of characters: (, ) and *, writ ...