031 - Further For Loop Practice 7 (mIxEd CaSe)

Given the following inputs:

String s;

 

Write a for loop that will print out the string in alternating cases, with the first letter being lowercase.

 

Keep in mind the following String methods:

• str.toUpperCase(); //make it uppercase
• str.toLowerCase(); //make it lowercase

DO NOT USE .charAt()! .charAt returns a character, and you need a string in order to make it upper/lowercase. To get a letter at a single position, use the following:

• str.substring(x,x+1); //gives character as string at position x

Sample input/outputs:

In: powerful out: pOwErFuL   In: COMEDIC out: cOmEdIc   In: acroBATics out: aCrObAtIcS

 

HINT: You will need to use an IF statement inside your for loop!

 

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Solution

 

import java.util.Scanner;
 
class Bakjoon {
    public static void main(String[] args) {
        Scanner inp = new Scanner(System.in);
        System.out.print("In:");
        String s = inp.nextLine();
        //write your code below
        for(int i=0;i<s.length();i++) {
            System.out.print(i%2==0?s.substring(i,i+1).toLowerCase():s.substring(i,i+1).toUpperCase());
        }
        
      }
    }