Problem difficulty: Medium Problem description Given a string s, find the length of the longest substring without repeating characters. Example 1: Input: s […]
Leetcode : Longest Substring Without Repeating Characters Read More »
Problem difficulty: Medium Problem description You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order,
Leetcode: Add Two Numbers Read More »
Problem difficulty: Easy Problem description Write a function to find the longest common prefix string amongst an array of strings.
Leetcode: Longest Common Prefix Read More »
Problem difficulty: Easy Problem description Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X
LeetCode: Roman to Integer Read More »
Given an integer x, return true if x is a palindrome, and false otherwise. Example 1: Input: x = 121
Leetcode: Palindrome Number Read More »
Problem difficulty: Easy Problem description Given an array of integers nums and an integer target, return indices of the two numbers such that they
LeetCode: Two Sum problem Read More »