Noisy Palindrome Algorithm (Check Lowercase Palindrome Strings)
You are given a string s containing lowercase and uppercase alphabet characters as well as digits from “0” to “9”. Return whether s is a palindrome if we only …
Teaching Kids Programming – Reverse Bits of a 32-bit Integer
Teaching Kids Programming: Videos on Data Structures and Algorithms Reverse bits of a given 32 bits unsigned integer. Note: Note that in some languages such as Java, there is …
Teaching Kids Programming – Find N Unique Integers Sum up to Zero
Teaching Kids Programming: Videos on Data Structures and Algorithms Given an integer n, return any array containing n unique integers such that they add up to 0. Example 1: …
Remove Duplicate Numbers by using a Hash Map
Given a list of integers nums, remove numbers that appear multiple times in the list, while maintaining order of the appearance in the original list. It should use O(k) …
Count Multiset Sum (Knapsacks) by Dynamic Programming Algorithm
March 31, 2021
algorithms, c / c++, dynamic programming, Dynamic Programming, Knapsack Problems, math
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Given a list of unique positive integers nums and a positive integer k, return the number of unique combinations that sum up to k. You may reuse numbers when …
Teaching Kids Programming – Longest Consecutive Run of 1s in Binary
Teaching Kids Programming: Videos on Data Structures and Algorithms Given a non-negative integer n, return the length of the longest consecutive run of 1s in its binary representation. Constraints …