Largest of three numbers in java | codeYourslf

Largest among three numbers in java

How to find the largest among three numbers using Java programming language.

Approach :- 1 "Largest among three numbers in java using if-else statement"

package asicQuestion;

import java.util.Scanner;

public class largerNO {

  public static void main(String[] args) {

    int num1, num2, num3;

    Scanner sc = new Scanner(System.in);

    

    System.out.println("Enter the first number: ");

    num1 = sc.nextInt();

    System.out.println("Enter the second number: ");

    num2 = sc.nextInt();

    System.out.println("Enter the third number: ");

    num3 = sc.nextInt();

    

    if (num1 > num2 && num1 > num3) {

      System.out.println(num1 +" is greater than "+num2+" and "+num3);

    } else if (num2 > num1 && num2 > num3) {

     System.out.println(num2 +" is greater than "+num1+" and "+num3);

    } else {

      System.out.println(num3 +" is greater than "+num1+" and "+num2);

    }

  }

}

 

Output :- 

Approach :- 2 "Find largest number using nested if-else"

package asicQuestion;

import java.util.Scanner;

public class largestNo {

public static void main(String[] args){

    int num1 = 4, num2 = 7, num3 = 13;

    

    if(num1 > num2){

      if(num1 > num3){

        System.out.println(num1 +" is greater than "+num2+" and "+num3);

      }

      

      else{

        System.out.println(num3 +" is greater than "+num1+" and "+num2);

      }

    }

    

    else{

      if(num2 > num3){

        System.out.println(num2 +" is greater than "+num1+" and "+num3);

      }

      

      else{

        System.out.println(num3 +" is greater than "+num1+" and "+num2);

      }

    }

}

}  

Approach:- 3 " using ternary operator"

package asicQuestion;

public class largeNumUsingTernary {

public static void main(String[] args){

  int num1 = 24, num2 = 14, num3 = 8;

  int result = num1 > (num2 > num3 ? num2 : num3) ? num1 : ((num2 > num3)?num2:num3);

  System.out.println("The largest number is: "+result);

}

}

 

Logic explanation 

- How to determine the largest among three numbers, first we have to take three integer numbers. Let's it be num1, num2, num3.

- See if num1 is greater than num2 as well as num3, then num1 will be the greatest number among num2 and num3.

• Ex:- (num1 > num2) && (num1 > num3)

- Like this if num2 is greater than num1 and num 3, then num2 will be the greatest number.

• Ex:- (num2 > num1) && (num2 > num3)

- If the above two conditions are not satisfied, then num3 will automatically be greatest number.

Logic for largest number using ternary operator

int result = num3 > (num1 > num2 ? num1 : num2) ? num3 : ((num1 > num2) ? num1 : num2);

Ex:- num1 = 4, num2 = 6, num3 = 5

1. result = 5 > ( 4 > 6 ? num1 : num2 ) ? num3 : (( 4 > 6 ) ? num1 : num2);
2. => result = 5 > 6 ? num3 : 6
3. => result = 6

Also read :-

1. Even Odd in java :- click here
2. Array input in java :- click here