100 articles · page 9 of 23
2559. Count Vowel Strings in Ranges
You are given a 0-indexed array of strings words and a 2D array of integers queries. …
1030. Matrix Cells in Distance Order
You are given four integers row, cols, rCenter, and cCenter. There is a rows x cols&n…
Maximum Score After Splitting a String
C++ Solution class Solution { public: int maxScore(string s) { int ones = count(s.begin(), s.end(), '1'); // T…
90% of CS graduates can't figure this out
Someone important on X posted: https://x.com/vikhyatk/status/1873033432705712304 i have a very simple question…
Count Ways To Build Good Strings
Given the integers zero, one, low, and high, we can construct a string by starting with an…
Custom Dockerfile for PHP 5.6 / Apache / WPCLI
I wanted to get my old wordpress 3.4 websites running again, so I had to build a couple docker images, and a d…
Set Matrix Zeros
class Solution { public: void setMatrixZeroes(vector<vector<int>> &mat) { int n = mat.size(); int m …
Zigzag string conversion solution in C++
The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this Input: s = "PAY…
Search Sorted Matrix Solution in C++
The idea here is to implement binary search after discovering the correct row. #include <bits/stdc++.h> usi…
LeetCode 543 Diameter of a Binary Tree in C++
Given the root of a binary tree, return the length of the diameter of the tree. The&n…
401. Binary Watch
A binary watch has 4 LEDs on the top to represent the hours (0-11), and 6 LEDs on the bottom to represent …
Letter Combinations of a phone number
Given a string containing digits from 2-9 inclusive, return all possible letter combinations that th…