1 Write a java method that takes a string as a parameter and

1. Write a java method that takes a string as a parameter and returns a string that replace each \'s\' or \'S\' by 5 and each \'z\' or \'Z\' by 2

2. Write a java program that uses a loop to input 10 doubles from the user and print the second minimum

Solution

1)

package org.students;

import java.util.Scanner;

public class ReplaceSswith5Zzwith2 {

   public static void main(String[] args) {
      
       //Declaring variables
       String str,newStr=\"\";
       char ch;
      
       //Scanner class object is used to read the inputs enteredby the user
               Scanner sc=new Scanner(System.in);

               //Getting the string entered by the user
           System.out.print(\"Enter String :\");
           str=sc.nextLine();
          
           /* This for loop will take each character from the String
           * and check whether that character is \'s\' or \'S\' or \'z\' or \'Z\'
           * if yes replace with values and make a new string
           */
           for(int i=0;i<str.length();i++)
           {
               //Checking whether the character is \'s\' or \'S\'
               if(str.charAt(i)==\'s\' || str.charAt(i)==\'S\')
               {
                   ch=\'5\';
               }
               //Checking whether the character is \'z\' or \'Z\'
               else if(str.charAt(i)==\'z\' || str.charAt(i)==\'Z\')
               {
                   ch=\'2\';
               }
               else
                   ch=str.charAt(i);
              
               //Appending each character to the \'newStr\' variable
               newStr+=ch;
           }
          
           //Displaying the string
           System.out.println(\"String After Replacing :\"+newStr);
   }

}

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Output:

Enter String :Stranzer
String After Replacing :5tran2er

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2)

package org.students;

import java.util.Scanner;

public class SecondMinimum {

   public static void main(String[] args) {
       //Creating an double array
       double arr[]=new double[10];
       double min,second_min;
      
       //Scanner class object is used to read the inputs entered by the user
       Scanner sc=new Scanner(System.in);
  
       /* This for loop will prompt the user to enter
       * the values and populate them into an array
       */
       for(int i=0;i<10;i++)
       {
           //Getting the number entered by the user
           System.out.print(\"Enter number \"+(i+1)+\":\");
           arr[i]=sc.nextDouble();
       }
      
       min=arr[0];
       second_min=arr[0];
      
      
       //This for loop will finds the minimum element
       for(int i=0;i<10;i++)
       {
           if(arr[i]<min)
               min=arr[i];
          
       }
      
       //This for loop will finds the second minimum element
       for(int i=0;i<10;i++)
       {
           if(arr[i]<second_min && arr[i]!=min)
               second_min=arr[i];
       }
      
       //Displaying the second minimum element
       System.out.println(\"The Second minimum Element is :\"+second_min);
   }

}

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output:

Enter number 1:23.34
Enter number 2:34.45
Enter number 3:45.56
Enter number 4:56.67
Enter number 5:67.78
Enter number 6:78.89
Enter number 7:11.12
Enter number 8:22.23
Enter number 9:33.34
Enter number 10:44.45
The Second minimum Element is :22.23

________________Thank You