Write a Java program to compare two strings

Write a Java program to compare two strings

import java.util.Scanner;

class Compare1
{
   public static void main(String args[])
   {
      String str1, str2;
      Scanner in = new Scanner(System.in);

      System.out.println("Enter the first string");
      str1 = in.nextLine();

      System.out.println("Enter the second string");
      str2 = in.nextLine();

      if (str1.compareTo(str2) > 0)
         System.out.println("The first string is greater than the second.");
      else if (str1.compareTo(str2) < 0)
         System.out.println("The first string is smaller than the second.");
      else 
         System.out.println("Both the strings are equal.");
   }
}

Output:-

debug:
Enter the first string
India
Enter the second string
India
Both the strings are equal.
BUILD SUCCESSFUL (total time: 14 seconds)

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Write a program in java reverses a string entered by a user

// Write a program in java   reverses a string entered by a user

import java.util.*;

class Reverse1
{
   public static void main(String args[])
   {
      String str1, reverse = "";
      Scanner in = new Scanner(System.in);

      System.out.println("Enter a string to reverse");
      str1 = in.nextLine();

      int length = str1.length();

      for ( int i = length - 1 ; i >= 0 ; i-- )
         reverse = reverse + str1.charAt(i);

      System.out.println("Reverse of entered string is: "+reverse);
   }
}

Output:-

debug:
Enter a string to reverse
Welcome
Reverse of entered string is: emocleW
BUILD SUCCESSFUL (total time: 8 seconds)




import java.util.*;

class Reverse1
{
   public static void main(String args[])
   {
   

   StringBuffer a = new StringBuffer("Good Morning");
      System.out.println(a.reverse());
   }
}
 

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Fibonacci series in Java

Fibonacci series in Java

// Let's see the fibonacci series program in java without using recursion.

Example

class Fibo{  

public static void main(String args[])  

{    

 int n1=0,n2=1,n3,i,count=10;    

 System.out.print(n1+" "+n2);//printing 0 and 1    

    

 for(i=2;i<count;++i)//loop starts from 2 because 0 and 1 are already printed    

 {    

  n3=n1+n2;    

  System.out.print(" "+n3);    

  n1=n2;    

  n2=n3;    

 }    

  

}}  

OUTPUT:-

0 1 1 2 3 5 8 13 21 34BUILD SUCCESSFUL (total time: 0 seconds)

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Write a program to find Larget element of an Array

Write a program to find Larget element of an Array

public class Large1{

    public static void main(String[] args) {

        double[] numArray = { 23.4, -55, 50.0, 33.5, 55.5, 100, 5.7, -66.5 };

        double large = numArray[0];

        for (double num: numArray) {

            if(large < num)

                large = num;

        }

        System.out.format("Largest element = %.2f", large);

    }

}

When you run the program, the output will be:

debug:

Largest element = 100.00

In the above program, we store the first element of the array in the variable large.

Then, large is used to compare other elements in the array. If any number is greater than large, large is assigned the number.

In this way, the largest number is stored in large when it is printed.

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