Skip to main content

Print Maze Paths

1. You are given a number n and a number m representing number of rows and columns in a maze.

2. You are standing in the top-left corner and have to reach the bottom-right corner. Only two moves are allowed 'h' (1-step horizontal) and 'v' (1-step vertical).

3. Complete the body of pri tMazePath function - without changing signature - to print the list of all paths that can be used to move from top-left to bottom-right.

Use sample input and output to take idea about output.


Input Format

A number n

A number m

Output Format

Print paths (one path in each line) in order hinted by Sample output


Constraints

0 <= n <= 10

0 <= m <= 10

Sample Input

2

2

Sample Output

hv

vh


Solution:

import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {
            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt(), m = sc.nextInt();
            printMazePaths(1,1,n,m,"");
    }

    // sr - source row
    // sc - source column
    // dr - destination row
    // dc - destination column
    public static void printMazePaths(int sr, int sc, int dr, int dc, String psf) {
        if(sr>dr || sc>dc) return;
        if(sr==dr && sc==dc){
            System.out.println(psf);
            return;
        }
        
        printMazePaths(sr,sc+1,dr,dc,psf+"h");
        printMazePaths(sr+1,sc,dr,dc,psf+"v");
    }

}
Labels:

Comments

Post a Comment

Popular posts from this blog

Classes and Objects | Accenture TFA

  Question  1 Correct Mark 1.00 out of 1.00 Flag question Question text ___ and _____ are the access specifiers that can be applied to top level Class. Select one or more: public   protected default   private Feedback Your answer is correct. The correct answers are: default, public Question  2 Correct Mark 1.00 out of 1.00 Flag question Question text class Sample{      private double num = 100;    private int square(int a){ return a*a;    } }   public class Test{    public static void main(String args[]){   Sample obj = new Sample();   System.out.println(obj.num);  System.out.println(obj.square(10));    }   } Select one: Compile time error   Run time error Executes but no output 100 Feedback Your answer is correct. The correct answer is: Compile time error Question  3 Correct Mark 1.00 out of 1.00 Flag question Question text Choose the appropriate access specifier for the attribute value so that it can be accessed from anywhere. class Test { Choose... private protected public d
Post a Comment
Read more

Classes and Objects, Packages | Accenture TFA

  Question  1 Correct Mark 1.00 out of 1.00 Flag question Question text State True or False When using eclipse whichever classes are needed for the present class can be imported automatically. Select one: True   False Feedback The correct answer is 'True'. Question  2 Correct Mark 1.00 out of 1.00 Flag question Question text switch(a) {     default:         System.out.println("Welcome"); } Of which data types can the variable ‘a’ be? 1. long 2. byte 3. int 4. char 5. float 6. short Select one: 3, 4 and 5 1 and 3 3 and 4 2,3, 4 and 6   Feedback Your answer is correct. The variable used in a switch statement can be a byte, short, int, char or String type only. The correct answer is:  2,3, 4 and 6 Question  3 Correct Mark 1.00 out of 1.00 Flag question Question text Predict the output.   public class Test {         public static void main(String args[])         {                     int a = 2, b = 0;              for ( ; b < 20; ++b) {                  if (b % a == 0)
Post a Comment
Read more

Minimum Lights to Activate | Interview

Problem: Description There is a corridor in a Jail which is N units long. Given an array A of size N . The i th index of this array is 0 if the light at i th position is faulty otherwise it is 1. All the lights are of specific power B which if is placed at position X , it can light the corridor from [ X-B+1, X+B-1] . Initially all lights are off. Return the minimum number of lights to be turned ON to light the whole corridor or -1 if the whole corridor cannot be lighted. Problem Constraints 1 <= N <= 1000 1 <= B <= 1000 Input Format First argument is an integer array A where A[i] is either 0 or 1. Second argument is an integer B. Output Format Return the minimum number of lights to be turned ON to light the whole corridor or -1 if the whole corridor cannot be lighted. Example Input Input 1: A = [ 0, 0, 1, 1, 1, 0, 0, 1]. B = 3 Input 2: A = [ 0, 0, 0, 1, 0]. B = 3 Example Output Output 1: 2 Output 2: -1 Example Explanation Explanation 1: In the first configuration,
Post a Comment
Read more