Number of Closed Islands | LeetCode
class Solution { public int closedIsland(int[][] grid) { int row = grid.length; int col = grid[0].length; int countIsland = 0; […]
leetcode
LeetCode Day16 Binary Tree Part 6
Given the root of a Binary Search Tree (BST), return the minimum absolute difference between the values of any two
Download all LeetCode solved questions
LeetCode Submission Saver Github LeetCode Submission Saver is a tool that allows users to save all their accepted submissions from
523. Continuous Subarray Sum
523. Continuous Subarray Sum Medium Given an integer array nums and an integer k, return true if nums has a
648. Replace Words
648. Replace Words Medium In English, we have a concept called root, which can be followed by some other word
409. Longest Palindrome
409. Longest Palindrome Easy Given a string s which consists of lowercase or uppercase letters, return the length of the
Flatten Binary Tree to Linked List | LeetCode | Java
Approach 1 : Using DFS class Solution { TreeNode prevNode = null; public void flatten(TreeNode root) { if(root==null) return; flatten(root.right);
Best time to buy and sell stock Solution
Let’s find the optimal solution for the ‘Best Time to Buy and Sell Stock‘ problem, as presented by LeetCode, GeeksforGeeks,
752. Open the Lock
752. Open the Lock Medium You have a lock in front of you with 4 circular wheels. Each wheel has
Find if Path Exists in Graph
Here’s a high-level approach for the problem: Approach: Create an Adjacency List: Convert the given array of edges into an