LeetCode 739 Daily temperatures solution - O(1) space O(n) time

LeetCode 739 Daily temperatures solution - O(1) space O(n) time

LeetCode RaviTeja   11:30:00 PM

The solution is same as LC's official editorial Approach 2: Array, Optimized SpaceBelow is my explanation in detailed manner.The problem statement asks for finding the number of days you have to wait until a warmer...

LeetCode cheatsheet

LeetCode cheatsheet

LeetCode RaviTeja   10:38:00 PM

P𝗋𝗈𝖻𝗅𝖾𝗆 S𝗈𝗅𝗏𝗂𝗇𝗀 Tips 1. If an input array is sorted then a. Binary search O(log n) b. Two pointers O(n) 2. If asked for all permutations/subsets then a. Backtracking (First preference) b. Breadth First...

LeetCode 36. Valid Sudoku - Solution Beats 92.52%

LeetCode 36. Valid Sudoku - Solution Beats 92.52%

LeetCode RaviTeja   10:07:00 PM

Problem    : https://leetcode.com/problems/valid-sudoku/Solution    : https://leetcode.com/problems/valid-sudoku/solutions/3572587/92ms-beats-92-52-python-36-valid-sudoku-28-may-2023/Submisson    : https://leetcode.com/problems/valid-sudoku/submissions/Github code    :    https://github.com/ravivanjarapu/ProblemSolving/blob/main/LeetCode/36.%20Valid%20Sudoku.pyIntuitionCompare the list with set. If lengths are same, they are unique.ApproachExclude '.' and check if every row list length is same when compared with its setTranspose the...