a question on Pramp platform In the beginning, the solution that I come up with is below. Using two pointers to find the non-zero element and set it at where the slow pointer points at, and then iterate the whole array. The slow pointer will return the last place that…

A Question on Pramp platform There are three ways that you can solve it. Memoization + recursive function static int[][] memo; static int numOfPathsToDest(int n) { // your code goes here memo = new int[n][n]; for(int i = 0; i < n; i++){ Arrays.fill(memo[i], …

a Question on Pramp platform In this question, we are going to write a function called sudokuSolve, which is going to return whether the sudoku board is solvable or not. If it is solvable, the function should return true. Otherwise, return false. class Solution { static boolean sudokuSolve(char[][]…

a Question on Pramp platform In this question, we will need to re-implement a function to calculate the n’th root of number. The input of the function is a nonnegative number x and a positive integer n. In the end, the function should return the positive n’th root of x…

Study Java for a better life and future… 1. Polymorphism Java is an object-oriented language, and polymorphism is one of its features. There are two types of polymorphism in Java. One is compile-time polymorphism and the other is runtime polymorphism. (1.1) Compile-time Polymorphism Compile-time polymorphism can be achieved with method overloading and operator overloading. …