5.How to find smallest number in java : best ways

Way 1 : find smallest number in java : Simple If else.

To find smallest number in java, you can use the following approach:

1. Declare three variables to hold the three numbers.
2. Compare the first number with the second number using an if statement. If the first number is smaller, assign it to a variable called smallest.
3. Compare the smallest variable with the third number using another if statement. If the third number is smaller, update the smallest variable to hold its value.
4. At this point, the smallest variable will contain the smallest number among the three.

Here’s an example code snippet that demonstrates this approach:

public class Main {
    public static void main(String[] args) {
        int num1 = 10;
        int num2 = 5;
        int num3 = 7;
        int smallest;

        if (num1 < num2) {
            smallest = num1;
        } else {
            smallest = num2;
        }

        if (num3 < smallest) {
            smallest = num3;
        }

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

In this example, the values 10, 5, and 7 are assigned to num1, num2, and num3 variables, respectively. The program compares these numbers and assigns the smallest value to the smallest variable. Finally, it prints out the result, which in this case would be 5.

Way 2 : find smallest number in java: by utilizing the Math.min() method

Another way to find smallest number in java is by utilizing the Math.min() method. The Math.min() method returns the minimum of two given numbers.

public class SmallestNumberFinder {
    public static void main(String[] args) {
        int num1 = 10;
        int num2 = 5;
        int num3 = 7;

        int smallest = Math.min(num1, Math.min(num2, num3));

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

In this example, the Math.min() method is used to find the minimum among num1, num2, and num3. The result is assigned to the smallest variable. Finally, it prints out the smallest number, which in this case would be 5.

Using Math.min() simplifies the code by avoiding multiple if statements for comparisons and reducing the need for intermediate variables.

Way 3 : find Smallest number among three in java: by using a loop to iterate over the numbers.

Another way to find the smallest number among three numbers in Java is by using a loop to iterate over the numbers and keep track of the smallest value.

public class SmallestNumberFinder {
    public static void main(String[] args) {
        int[] numbers = {10, 5, 7};

        int smallest = numbers[0]; // Assume the first number is the smallest

        for (int i = 1; i < numbers.length; i++) {
            if (numbers[i] < smallest) {
                smallest = numbers[i]; // Update the smallest if a smaller number is found
            }
        }

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

In this example, an array numbers is used to store the three numbers. The smallest variable is initially set to the first element of the array. Then, a for loop is used to iterate over the remaining numbers. If a smaller number is found, it is assigned to the smallest variable. Finally, it prints out the smallest number, which in this case would be 5.

Using a loop provides flexibility if you have a dynamic set of numbers or if you want to find the smallest number among a larger collection of values.

Way 4 : find Smallest number among three in java: by using the ternary operator (? :).

Another way to find the smallest number among three numbers in Java is by using the ternary operator (? :).

public class SmallestNumberFinder {
    public static void main(String[] args) {
        int num1 = 10;
        int num2 = 5;
        int num3 = 7;

        int smallest = (num1 < num2) ? ((num1 < num3) ? num1 : num3) : ((num2 < num3) ? num2 : num3);

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

In this example, the ternary operator is used to compare the numbers in a nested manner. It first checks if num1 is smaller than num2. If true, it further checks if num1 is smaller than num3. If that condition is also true, num1 is assigned to the smallest variable. If num1 is not smaller than num3, num3 is assigned to the smallest variable. If num1 is not smaller than num2, it checks if num2 is smaller than num3. If true, num2 is assigned to the smallest variable. Otherwise, num3 is assigned. Finally, it prints out the smallest number, which in this case would be 5.

Using the ternary operator allows for concise and inline comparisons, reducing the need for multiple if statements or loops.

You can run above all code here just copy and paste.

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