Java Program to Generate N Number of Passwords of Length M Each
Java program to generate N number of passwords each of length M. The number of passwords returned doesn’t exceed the length M.
Example:
Input : N = 1, M = 3
Output: 571
Input : N = 2, M = 4
Output: 5671
1987Approach:
- Import random package for creating random numbers.
- Initialize variables N and M.
- Create an array of N length.
- Run nested loops
- First loop for generating N numbers of passwords.
- Second loop for creating the password of M length.
Below is the implementation of the above approach:
Java
// Java Program to Generate N Number// of Passwords of Length M Eachimport java.util.Random;import java.util.Scanner; public class GFG { public static void main(String args[]) { // create a object of rendom class Random r = new Random(); // N is numbers of password int N = 5; // M is the length of passwords int M = 8; // create a array of store passwords int[] a = new int[N]; // run for loop N time for (int j = 0; j < N; j++) { // run this loop M time for genarating // M length password for (int i = 0; i < M; i++) { // store the password in array System.out.print(a[j] = r.nextInt(10)); } System.out.println(); } }} |
Output
73807243 05081188 63921767 70426689 06272980
Time Complexity: O(N*M), where N is the number of passwords required and M is the length of each password.
Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course.
