How to Design a Two-Sum Data Structure?
Design and implement a TwoSum class. It should support the following operations: add and find. add – Add the number to an internal data structure. find – Find if …
The MySQL If and Case Statement Exercise: How to Swap Elements in MySQL?
Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and …
Compute the Number of Ways to Paint the House via Dynamic Programming Algorithm
There is a fence with n posts, each post can be painted with one of the k colors. You have to paint all the posts such that no more …
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 …