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In this post, you will find the solution for Cats and a Mouse in Java-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Algorithm
The word Algorithm means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon in order to get the expected results.
Advantages of Algorithms:
- It is easy to understand.
- Algorithm is a step-wise representation of a solution to a given problem.
- In Algorithm the problem is broken down into smaller pieces or steps hence, it is easier for the programmer to convert it into an actual program.
Link for the Problem – Cats and a Mouse – Hacker Rank Solution
Cats and a Mouse – Hacker Rank Solution
Problem:
Two cats and a mouse are at various positions on a line. You will be given their starting positions. Your task is to determine which cat will reach the mouse first, assuming the mouse does not move and the cats travel at equal speed. If the cats arrive at the same time, the mouse will be allowed to move and it will escape while they fight.
You are given queries in the form of , , and representing the respective positions for cats and , and for mouse . Complete the function to return the appropriate answer to each query, which will be printed on a new line.
- If cat catches the mouse first, print
Cat A
. - If cat catches the mouse first, print
Cat B
. - If both cats reach the mouse at the same time, print
Mouse C
as the two cats fight and mouse escapes.
Example
The cats are at positions (Cat A) and (Cat B), and the mouse is at position . Cat B, at position will arrive first since it is only unit away while the other is units away. Return ‘Cat B’.
Function Description
Complete the catAndMouse function in the editor below.
catAndMouse has the following parameter(s):
- int x: Cat ‘s position
- int y: Cat ‘s position
- int z: Mouse ‘s position
Returns
- string: Either ‘Cat A’, ‘Cat B’, or ‘Mouse C’
Input Format
The first line contains a single integer, , denoting the number of queries.
Each of the subsequent lines contains three space-separated integers describing the respective values of (cat ‘s location), (cat ‘s location), and (mouse ‘s location).
Constraints
Sample Input 0
2 1 2 3 1 3 2
Sample Output 0
Cat B Mouse C
Explanation 0
Query 0: The positions of the cats and mouse are shown below:
Cat will catch the mouse first, so we print Cat B
on a new line.
Query 1: In this query, cats and reach mouse at the exact same time:
Because the mouse escapes, we print Mouse C
on a new line.
Cats and a Mouse – Hacker Rank Solution
import java.util.Scanner; /** * @author Techno-RJ * */ public class CatsAndAMouse { public static void main(String[] args) { Scanner in = new Scanner(System.in); int q = in.nextInt(); for (int a0 = 0; a0 < q; a0++) { int x = in.nextInt(); int y = in.nextInt(); int z = in.nextInt(); int a = Math.abs(x - z); int b = Math.abs(y - z); if (a == b) { System.out.println("Mouse C"); } else if (a > b) { System.out.println("Cat B"); } else if (a < b) { System.out.println("Cat A"); } } in.close(); } }
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