Teaching Kids Programming – Compute the Number of Set Bits in an Integer
Teaching Kids Programming: Videos on Data Structures and Algorithms Given an integer n, return the number of 1 bits in n. Constraints 0 ≤ n < 2 ** 31 …
Algorithm to Sum of Unique Elements
You are given an integer array nums. The unique elements of an array are the elements that appear exactly once in the array. Return the sum of all the …
Teaching Kids Programming – Breadth First Search Algorithm to Check if All Leaves in Same Level of Binary Tree
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a binary tree root, return whether all leaves are at the same level. Constraints n ≤ 100,000 where n …
Greedy Algorithm to Find Maximum Number After One Swap
Given an integer n, you can swap any two digits at most once. Return the maximum value of the resulting number. Constraints 0 ≤ n < 2 ** 31 …
Teaching Kids Programming – Depth First Search Algorithm to Check If Leaves are Same Level in Binary Tree
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a binary tree root, return whether all leaves are at the same level. Constraints n ≤ 100,000 where n …
How to Exchange the Odd and Even Bits of a 32-bit Integer?
Write a program to swap odd and even bits in an integer with as few instructions as possible (e.g., bit 0 and bit 1 are swapped, bit 2 and …