Replace all occurrences of a space inside an array
Problem Given an array of characters, replace all occurrences of a space with another string. Assume that the array has enough space to contain all of »
Next Permutation
Problem Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement is not possible, it must rearrange it as »
Merge Intervals
Problem Given a collection of intervals, merge all overlapping intervals. Example 1: Input: [[1,3],[2,6],[8,10],[15,18]] Output: [[1,6],[8,10] »
Find the duplicate number
Problem Given an array nums containing \(n + 1\) integers where each integer is between \(1\) and \(n\) (inclusive), prove that at least one duplicate number must »
Algorithm Interview Problems
Welcome This page contains solutions to common interview problems that may be encountered. Arrays Longest Substring Without Repeating Characters Rotate a 2D Matrix Buy/Sell Two »