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Interview Questions, Answers and Tutorials

Java Substring

Java Substring

HackerRank, Testingtestinganswers.com

Given a string, s, and two indices, start and end, print a substring consisting of all characters in the inclusive range from start to end-1. You’ll find the String class’ substring method helpful in completing this challenge.

Input Format

The first line contains a single string denoting .
The second line contains two space-separated integers denoting the respective values of start and end.

Constraints

  • 1<=|s|<=100
  • 0<=start <end<=n
  • String s consists of English alphabetic letters (i.e., [a-z A-Z]) only.

Output Format

Print the substring in the inclusive range from start to end-1.

Sample Input

Helloworld
3 7

Sample Output

lowo

Explanation

In the diagram below, the substring is highlighted in green:

substring.png

Solution:

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String S = in.next();
        int start = in.nextInt();
        int end = in.nextInt();
        in.close();
        
        System.out.print(S.substring(start, end));
        
    }
}