Category: c / c++

Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 -> 2 …

This problem was inspired by this original tweet by Max Howell: Google: 90% of our engineers use the software you wrote (Homebrew), but you can’t invert a binary tree …

You are given an array x of n positive numbers. You start at point (0,0) and moves x metres to the north, then x metres to the west, x …

This is classified as a hard puzzle: https://leetcode.com/problems/palindrome-pairs/ A palindrome string is a string whose reverse string is exactly the same, e.g. ABBA, 1, UIU… Brute Force Almost every …

Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1’s in their binary representation and …