Algorithms to Check if Array Contains Duplicate Elements
Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it …
Tag: c++
Recursive Depth First Search Algorithm to Compute the Sum of Nodes with Even-Valued Grandparent in a Binary Tree
Given a binary tree, return the sum of values of nodes with even-valued grandparent. (A grandparent of a node is the parent of its parent, if it exists.) If …
How to Convert Integer to the Sum of Two No-Zero Integers?
Given an integer n. No-Zero integer is a positive integer which doesn’t contain any 0 in its decimal representation. Return a list of two integers where: A and B …
Algorithms to Shift a 2D Grid/Matrix In-Place
Given a 2D grid of size n * m and an integer k. You need to shift the grid k times. In one shift operation: Element at grid becomes …
C++ Coding Reference: iota() – Setting Incrementing Values to Arrays or Vectors
The C++ method iota (not to be confused with itoa which is to convert integers to string), is defined in header numeric. Its purpose is to compute increasing values …