Sherlock and Squares - HackerRank.

NOTE: If you are copying my code then its an advice to you to copy it after downloading it to avoid any kind of compilation error its link is available at the bottom of the source code.

Watson likes to challenge Sherlock's math ability. He will provide a starting and ending value describing a range of integers. Sherlock must determine the number of square integers within that range, inclusive of the endpoints.

Note: A square integer is an integer which is the square of an integer, e.g. .

For example, the range is  and , inclusive. There are three square integers in the range:  and .

Function Description

Complete the squares function in the editor below. It should return an integer representing the number of square integers in the inclusive range from  to .

squares has the following parameter(s):

• a: an integer, the lower range boundary
• b: an integer, the uppere range boundary

Input Format

The first line contains , the number of test cases.
Each of the next  lines contains two space-separated integers denoting  and , the starting and ending integers in the ranges.

Constraints

Output Format

For each test case, print the number of square integers in the range on a new line.

Sample Input

2
3 9
17 24

Sample Output

2
0

Explanation

Test Case #00: In range ,  and  are the two square integers.
Test Case #01: In range , there are no square integers.

Logic Used In this code

SOURCE CODE

import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.regex.*;

public class Solution {

// Complete the squares function below.

static int squares(int a, int b) {

return((int)Math.floor(Math.sqrt(b))-(int)Math.ceil(Math.sqrt(a))+1);

}

private static final Scanner scanner = new Scanner(System.in);

public static void main(String[] args) throws IOException {

BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

int q = scanner.nextInt();

scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

for (int qItr = 0; qItr < q; qItr++) {

String[] ab = scanner.nextLine().split(" ");

int a = Integer.parseInt(ab[0]);

int b = Integer.parseInt(ab[1]);

int result = squares(a, b);

bufferedWriter.write(String.valueOf(result));

bufferedWriter.newLine();

}

bufferedWriter.close();

scanner.close();

}

}

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RESULT

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