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Binary Tree Preorder Traversal Solution for C++ (https://leetcode.com/problems/binary-tree-preorder-traversal/) # Pull Request Template ## Description **Problem Summary:** Given the root of a binary tree, return the preorder traversal of its nodes'...

## Description We need to efficiently search for a target value in a matrix where rows and columns are sorted in ascending order. The matrix is structured such that lower...

Hi. I have few solutions of the Leetcode problem statements. I want to upload 'SQL 50' Solutions and many more.. It would be great if you allow me to contribute...

# Pull Request Template ## Description In a tournament, if the current number of teams in the tournament (n) is even, n / 2 matches are played, and n /...

# Summary This PR cleans up the README.md for accessibility, readability, and standardization. - Corrects invalid html - Removes dead links and adds new anchors - Standardizes some markdown -...

# 1331. Rank Transform of an Array ## Description The problem involves transforming an array of integers into a new array where each element is replaced by its rank, reflecting...

# Pull Request Template ## Description Added a new solution for the problem 274. H-Index. The problem involves finding the researcher's h-index, which is defined as the maximum value of...

# Pull Request Template ## Description This PR adds a solution for the problem **"419. Battleships in a Board"** from LeetCode. The goal is to count the number of battleships...

# Pull Request Template ## Description Please include a summary of the problem and about the approach to solve the solution. Please also include relevant motivation and context. List any...