Question

Write a Java program to meet the following requirements:

1. Prompt the user to enter three strings by using nextLine(). Space can be part of the string). ( Note: your program requires using loop: for-loop, while-loop or do-while-loop to get the input String )

2. Write a method with an input variable (string type).The method should return the number of lowercase letters of the input variable.

3. Get the number of the lowercase letters for each user input string by calling the method.

4. Compare the lowercase numbers and display the maximum, minimum lowercase numbers and the strings

5. You need to have proper comments.

6. You must use below testing data (copy and paste) to test your program.

Test input number: 12345

Check INPUT String: abc

MAXIMUM number

Answer 1

import java.util.*;
public class Main
{
//2
//method to find number of lower case letters in given input variable
static int count_lowercase(String x)
{
int c=0;
for(int i=0;i<x.length();i++)
{
char d= x.charAt(i);//getting each char in x
if(97<=d && d<123)//if it is lowercase then
c++;//increasing count
}
return c;//returning count
  
}
   public static void main(String[] args) {
  
   //1  
       Scanner sc = new Scanner(System.in);//to read input
      
       System.out.println("Enter 3 strings in each line:");
       String s[]=new String[3];
       for(int i=0;i<3;i++)
       s[i]=sc.nextLine();//reading strings
      
       int max,min,maxc,minc;//declaring required variables
       max=min=0;
       int c=count_lowercase(s[0]);//calling method for string1
       int c2=count_lowercase(s[1]);//calling method for string2
       if(c<c2)//finding min and max string with lower case letters
       {max=1;
       maxc=c2;
       minc=c;
      
       }else
       {max=0;
       maxc=c;
       minc=c2;
   }
       c2=count_lowercase(s[2]);//calling method for string3
       if(maxc<c2)//finding min and max string with lower case letters
       {max=2;
       maxc=c2;
       }
       else if(c2<minc)
       {
       minc=c2;
       min=2;
       }
      
       //now displaying output
       System.out.println("String with max lower case letters :"+s[max]+" count:"+maxc);
       System.out.println("String with min lower case letters :"+s[min]+" count:"+minc);
   }
}

output:

Enter 3 strings in each line:
Hi
Hello
How are you
String with max lower case letters :How are you count:8
String with min lower case letters :Hi count:1