Problem Statement

1Problem Description : Given three integers Write Algorithm, Flowchart and Program to display them in ascending order.
2
3Example 1 : 
4    Input  : 2, 3, 1
5    Output : 1, 2, 3
6    Explanation : 1, 2, 3 are in ascending order for given numbers
7
8Example 2 : 
9    Input  : 5, 2, 7
10    Output : 2, 5, 7
11    Explanation : 2, 5, 7 are in ascending order for given numbers

Algorithm

1Input :  Three numbers n1, n2, n3
2Step 1:  Start
3Step 2:  Read number n1, n2, n3 
4Step 3:  if n1 <= n2 and n1 <= n3 go to Step 4 else go to step 7
5Step 4:  if n2 <= n3 go to step 5 else go to step 6
6Step 5:  print n1, n2, n3 and go to step 14
7Step 6:  print n1, n3, n2 and go to step 14
8step 7:  if n2 <= n1 and n2 <= n3 go to step 8 else go to step 11
9step 8:  if n1 <= n3 go to step 9 else go to step 10
10step 9:  print n2, n1, n3 and go to step 14
11step 10: print n2, n3, n1 and go to step 14
12step 11: if n1 <= n2 go to step 12 else go to step 13
13step 12: print n3, n1, n2 and go to step 14
14step 13: print n3, n2, n1 and go to step 14
15step 14: Stop
16Output: n1, n2, n3 in sorted order

Code Implementation

1import java.util.Scanner;
2
3public class SortThreeNumbers {
4
5    public static void main(String[] args) {
6        Scanner sc = new Scanner(System.in);
7        System.out.print("Enter n1: \n");
8        int n1 = sc.nextInt();
9        System.out.print("Enter n2: \n");
10        int n2 = sc.nextInt();
11        System.out.print("Enter n3: \n");
12        int n3 = sc.nextInt();
13        new SortThreeNumbers().sort(n1, n2, n3);
14    }
15
16    public void sort(int n1, int n2, int n3) {
17        if(n1 <= n2 && n1 <= n3) {
18            if(n2 <= n3) {
19                System.out.printf("%d %d %d \n", n1, n2, n3);
20            }else {
21                System.out.printf("%d %d %d \n", n1, n3, n2);
22            }
23        }else if(n2 <= n1 && n2 <= n3) {
24            if(n1 <= n3) {
25                System.out.printf("%d %d %d \n", n2, n1, n3);
26            }else {
27                System.out.printf("%d %d %d \n", n2, n3, n1);
28            }
29        }else {
30            if(n1 <= n2){
31                System.out.printf("%d %d %d \n", n3, n1, n2);
32            }else {
33                System.out.printf("%d %d %d \n", n3, n2, n1);
34            }
35        }
36    }
37}

1Output 1 : 
2Input  : 54 12 45
3Output : 12 45 54

1Output 2 : 
2Input  : 12 21 10
3Output : 10 12 21