Java Exercises: Find heights of the top three building in descending order from eight given buildings

Last update on August 19 2022 21:50:34 (UTC/GMT +8 hours)

Java Basic: Exercise-211 with Solution

Write a Java program to find heights of the top three building in descending order from eight given buildings.

Input:

0 ≤ height of building (integer) ≤ 10,000

Pictorial Presentation:

Java Basic Exercises: Find heights of the top three building in descending order from eight given buildings.

Sample Solution:

Java Code:

import java.util.*; 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] t = new int[8];
        System.out.println("Input the heights of eight buildings:");
        for(int i = 0; i < 8; i++){
            t[i] = sc.nextInt();
        }         
        Arrays.sort(t);
        System.out.println("\nHeights of the top three buildings:"); 
        for(int i = 7; i >= 5; i--){
            System.out.println(t[i]);
        }
    }
}

Sample Output:

Input the heights of eight buildings:
 25 19 23 45 18 23 24 19

Heights of the top three buildings:
45
25
24

Flowchart:

Java Code Editor:

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Java: Tips of the Day

Java: Anagrams

Generates all anagrams of a string.

public static List<String> anagrams(String input) {
    if (input.length() <= 2) {
        return input.length() == 2
                ? Arrays.asList(input, input.substring(1) + input.substring(0, 1))
                : Collections.singletonList(input);
    }
    return IntStream.range(0, input.length())
            .mapToObj(i -> new SimpleEntry<>(i, input.substring(i, i + 1)))
            .flatMap(entry ->
                    anagrams(input.substring(0, entry.getKey()) + input.substring(entry.getKey() + 1))
                            .stream()
                            .map(s -> entry.getValue() + s))
            .collect(Collectors.toList());
}

Ref: https://bit.ly/3rvAdAK