Java Program - Smallest of Three Numbers¶

Concept Explanation¶

What is it?¶

This program compares three numerical values provided by the user and determines which one is the lowest.

Real-world example¶

Imagine you have three prices for the same product from different stores. This program helps you find the cheapest option.

Algorithm¶

Start
Input three numbers: a, b, and c.
Check if a is smaller than both b and c.
Check if b is smaller than both a and c.
Otherwise, c is the smallest.
Display the smallest number.
End

Implementations¶

Java (JDK 17)

import java.util.Scanner;

public class SmallestNumber {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.println("Enter three numbers:");
        int a = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();

        int smallest;

        if (a <= b && a <= c) {
            smallest = a;
        } else if (b <= a && b <= c) {
            smallest = b;
        } else {
            smallest = c;
        }

        System.out.println("The smallest number is: " + smallest);
        sc.close();
    }
}

Explanation¶

Java
Logical AND (&&): Used to combine two conditions. Both must be true for the whole expression to be true.
Comparison Operators (<=): Handles cases where numbers might be equal.

Complexity Analysis¶

Time Complexity: O(1)
Space Complexity: O(1)

"Logic will get you from A to B. Imagination will take you everywhere." - Albert Einstein