What Personal Data Might be Revealed While Surfing The Net
Whenever you go on the internet and interact with a website or an online service, you are unwittingly exchanging vast amounts of information. Even if you take some basic …
C/C++ Coding Exercise – Search in a Binary Search Tree
August 15, 2018
algorithms, c / c++, data structure, learn to code, leetcode online judge
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Given the root node of a binary search tree (BST) and a value. You need to find the node in the BST that the node’s value equals the given …
C++ Coding Exercise – How to Merge Two Binary Trees?
Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are …
C/C++ Coding Exercisse – How to Implement ToLowerCase Function?
Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase. Allocate a string and assign input string to it. Change uppercase letters to …
C++ Coding Exercise – Find All Duplicates in an Array
Given an array of integers, 1 ≤ a ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear …
C++ Coding Exercise – Find Letter Case Permutation with DFS
Given a string S, we can transform every letter individually to be lowercase or uppercase to create another string. Return a list of all possible strings we could create. …