JAVA substring Hackerrank

 Given a string, , and two indices,  and , print a substring consisting of all characters in the inclusive range from  to . 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  and .

Constraints

• String  consists of English alphabetic letters (i.e., ) only.

Output Format

Print the substring in the inclusive range from  to .

Sample Input

Helloworld
3 7

Sample Output

lowo

Explanation

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

Answer:

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 substring function end index exclusive

        System.out.println(S.substring(start, end));

    }

}

JAVA strings introduction

 String myString = "Hello World!"

The elements of a String are called characters. The number of characters in a String is called the length, and it can be retrieved with the String.length() method.

Given two strings of lowercase English letters,  and , perform the following operations:

1. Sum the lengths of  and .
2. Determine if  is lexicographically larger than  (i.e.: does  come before  in the dictionary?).
3. Capitalize the first letter in  and  and print them on a single line, separated by a space.

Input Format

The first line contains a string . The second line contains another string . The strings are comprised of only lowercase English letters.

Output Format

There are three lines of output:
For the first line, sum the lengths of  and .
For the second line, write Yes if  is lexicographically greater than  otherwise print No instead.
For the third line, capitalize the first letter in both  and  and print them on a single line, separated by a space.

Sample Input 0

hello
java

Sample Output 0

9
No
Hello Java

Explanation 0

String  is "hello" and  is "java".

 has a length of , and  has a length of ; the sum of their lengths is .
When sorted alphabetically/lexicographically, "hello" precedes "java"; therefore,  is not greater than  and the answer is No.

When you capitalize the first letter of both  and  and then print them separated by a space, you get "Hello Java".

Answer:

import java.io.*;

import java.util.*;

public class Solution {

    public static void main(String[] args) {

        

        Scanner sc=new Scanner(System.in);

        String A=sc.next();

        String B=sc.next();

        /* Enter your code here. Print output to STDOUT. */

        int l1 = A.length();

        int l2 = B.length();

        

        System.out.println((l1+l2));

        

        //compare to compares two strings lexographically returns +ve no. if s1>s2

        System.out.println(A.compareTo(B)>0?"Yes":"No");

        

        //substring fun: in range substring(0,1) 1 i.e, upper range is excluded

        System.out.println(A.substring(0,1).toUpperCase() + A.substring(1,A.length())+" "+ B.substring(0,1).toUpperCase()+B.substring(1,B.length())) ;

    }

}