Smallest of three numbers
Table of Contents
In this article, we will discuss the concept of Program to Find Smallest of three numbers in Java
In this post, we are going to learn how to write a program to find smallest number out of three numbers using different methods in Java program.
In this code, we will find smallest number out of three numbers using if statements in Java language
Program 1
import java.util.Scanner;
class Small_Three_Num{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//read input from user
System.out.print("Enter the second number: ");
int num2=scan.nextInt();//read input from user
System.out.print("Enter the third number: ");
int num3=scan.nextInt();//read input from user
if(num1<=num2 && num1<=num3){
System.out.println("\n The smallest number is: "+num1);
}
if(num2<=num1 && num2<=num3){
System.out.println("\n The smallest number is: "+num2);
}
if(num3<=num1 && num3<=num2){
System.out.println("\n The smallest number is: "+num3);
}
}
} When the above code is executed, it produces the following result
Enter the first number: 678 Enter the first number: 435 Enter the first number: 234 The smallest number is: 234
In this code, we will find smallest number out of three numbers using if else-if statements in Java language
Program 2
import java.util.Scanner;
class Small_Three1{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//read input from user for num1
System.out.print("Enter the second number: ");
int num2=scan.nextInt();///read input from user for num2
System.out.print("Enter the third number: ");
int num3=scan.nextInt();///read input from user for num3
if(num1<=num2 && num1<=num3){
System.out.println("\n The Smallest number is: "+num1);
}
else if(num2<=num1 && num2<=num3){
System.out.println("\n The Smallest number is: "+num2);
}
else{
System.out.println("\n The Smallest number is: "+num3);
}
}
} When the above code is executed, it produces the following result
Enter the first number: 1234 Enter the first number: 432 Enter the first number: 5678 The smallest number is: 432
In this code, we will find smallest number out of three numbers using Nested if statements in Java language
Program 3
import java.util.Scanner;
class Small_Nested{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the first number: ");
int num1=scan.nextInt();//read input from user for num1
System.out.print("Enter the second number: ");
int num2=scan.nextInt();//read input from user for num2
System.out.print("Enter the third number: ");
int num3=scan.nextInt();//read input from user for num3
if(num1<=num2){
if(num1<=num3){
System.out.println("\n The Smallest number is: "+num1);
}
else{
System.out.println("\n The Smallest number is: "+num3);
}
}
else{
if(num2<=num3){
System.out.println("\n The Smallest number is: "+num2);
}
else{
System.out.println("\n The Smallest number is: "+num3);
}
}
}
} When the above code is executed, it produces the following result
Enter the first number: 456 Enter the first number: 213 Enter the first number: 598 The smallest number is: 213
In this code, we will find smallest number out of three numbers using Ternary operator in Java language
Program 4
import java.util.Scanner;
class Small_Three_Ternary{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
//scanner object for user input
System.out.print("Enter three number: ");
int num1=scan.nextInt();//storing input from user for num1
int num2=scan.nextInt();//storing input from user for num2
int num3=scan.nextInt();//storing input from user for num3
int result=num3<(num1<num2?num1:num2)?num3:((num1<num2)? num1:num2);
System.out.println("Smallest number is: "+result);
}
} When the above code is executed, it produces the following result
Enter three numbers: 654 876 23 The smallest number is: 23
Program 5
import java.util.Scanner;
class Small_Three_Ternary1{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
//scanner object for user input
System.out.print("Enter three number: ");
int num1=scan.nextInt();
//Reading input from user for num1
int num2=scan.nextInt();
//Reading input from user for num2
int num3=scan.nextInt();
//Reading input from user for num3
int temp=((num1<num2)? num1:num2);
int result=num3<temp?num3:temp;
System.out.println("Smallest number is: "+result);
}
} When the above code is executed, it produces the following result
Enter three numbers: 1021 234 2345 The smallest number is: 234
In this code, we will find smallest number out of three numbers using array in Java language
Program 6
import java.util.Scanner;
class Small_num{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
System.out.print("Enter the number of elements in an array: ");
int min;
int n=scan.nextInt();
//Takes input from user for array length
int arr[]=new int[n];
//declaring an array of given number of element
//for loop takes input from user to n times
for(int i=0; i<n; i++){
System.out.print("Enter the element "+(i+1)+": ");
arr[i]=scan.nextInt();//takes input from user for array elemebts
}
min=arr[0];
for(int i=0; i<n; i++){
if(min>arr[i]){
min=arr[i];
}
}
System.out.print("\nThe smallest value is: "+min);
}//display result on the screen
} When the above code is executed, it produces the following result
Enter the number of elements in an array: 3 Enter the element 1: 67 Enter the element 2: 34 Enter the element 3: 56 The smallest value is : 34
In this code, we will find smallest number out of three numbers using user defined method in Java language
Program 7
import java.util.Scanner;
class Smallest_Num_Method{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter theree number\n");
int num1=scan.nextInt();//reading num1 from user
int num2=scan.nextInt();;//reading num2 from user
int num3=scan.nextInt();;//reading num3 from user
find_Smallest(num1,num2,num3);//calling the method
}
static void find_Smallest(int num1,int num2, int num3){//method definition
if(num1<=num2 && num1<=num3){
System.out.println(num1+" is the smallest number");
}
else if(num2<=num1 && num2<=num3){
System.out.println(num2+" is the smallest number");
}
else{
System.out.println(num3+" is the smallest number");
}
}
} When the above code is executed, it produces the following result
Enter three numbers 345 127 240 127 is the smallest number
Program 8
import java.util.Scanner;
class SmallestNum_Method1{
public static void main (String args[]){
Scanner scan=new Scanner(System.in);
//create a scanner object for input
System.out.print("Enter the first number\n");
int num1=scan.nextInt();//reading num1 from user
int num2=scan.nextInt();;//reading num2 from user
int num3=scan.nextInt();;//reading num3 from user
//findSmallest(num1,num2,num3);//calling the method
System.out.println(findSmallest(num1,num2,num3)+" is the smallest number");
}
static int findSmallest(int num1,int num2, int num3){//method definition
if(num1<=num2){
if(num1<=num3)
return num1;
else
return num3;
}
else{
if(num2<=num3)
return num2;
else
return num3;
}
}
} When the above code is executed, it produces the following result
Enter three numbers 1245 1000 5634 1000 is the smallest number
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