Question

1. Write a program that reads a sequence of numbers from the keyboard, and displays the smallest number. The sequence has at least one number and is terminated by -999(-999 will not appear in the sequence other than as the end marker).

2. Write a program which requests an integer input n from the keyboard and computes the sum of square of k for all k from 1 to n(inclusive).

use java

Answer 1

import java.util.Scanner;

public class SmallestNumber {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a number");
        int min = in.nextInt(), num;
        while (true) {
            System.out.print("Enter a number(-999 to exit): ");
            num = in.nextInt();
            if (num == -999) break;
            if (num < min) min = num;
        }
        System.out.println("Minimum number is " + min);
        in.close();
    }
}

import java.util.Scanner;

public class SumOfSquares {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a value for n: ");
        int n = in.nextInt();
        int total = 0;
        for(int i = 1; i <= n; ++i) {
            total += (i*i);
        }
        System.out.println(total);
    }

}