How to Paint The Houses using Minimal Costs via Dynamic Programming Algorithm?
There are a row of n houses, each house can be painted with one of the three colors: red, blue or green. The cost of painting each house with …
Relative Sort Array Algorithm: Sort Array Based on Predefined Sequence
Given two arrays arr1 and arr2, the elements of arr2 are distinct, and all elements in arr2 are also in arr1. Sort the elements of arr1 such that the …
Classic Unlimited Knapsack Problem Variant: Coin Change via Dynamic Programming and Depth First Search Algorithm
July 14, 2019
algorithms, c / c++, DFS, Dynamic Programming, dynamic programming, Knapsack Problems, math
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You are given coins of different denominations and a total amount of money. Write a function to compute the number of combinations that make up that amount. You may …
How to Remove Vowels from a String in C++?
Given a string S, remove the vowels ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’ from it, and return the new string. Example 1: Input: “leetcodeisacommunityforcoders” Output: “ltcdscmmntyfrcdrs” Example 2: Input: …
How to Compute the Min Cost of Climbing Stairs via Dynamic Programming Algorithm?
On a staircase, the i-th step has some non-negative cost cost assigned (0 indexed). Once you pay the cost, you can either climb one or two steps. You need …
The Beginners’ Guide to Trie: How to Use the Trie in C++?
The Trie is common used data structure to speed up the word searching. The Trie is a structure to index the words character by character. Trie Definition in C++ …