Cod sursa(job #3245744)

Utilizator obsidianMidnight Majesty obsidian Data 30 septembrie 2024 14:53:00
Problema Sortare prin comparare Scor 0
Compilator java Status done
Runda Arhiva educationala Marime 3.54 kb
//package algsort;

import java.io.*;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
    static final String INPUT_FILE = "algsort.in";
    static final String OUTPUT_FILE = "algsort.out";

    public static class TokenizedReader {
        private final BufferedReader reader;
        private StringTokenizer tokenizer;

        TokenizedReader(String filePath) throws FileNotFoundException {
            reader = new BufferedReader(new FileReader(filePath));
        }

        private String nextToken() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        private int nextInt() {
            return Integer.parseInt(nextToken());
        }

        public void close() throws IOException {
            reader.close();
        }
    }

    public static void main(String[] args) throws IOException {
        TokenizedReader reader = new TokenizedReader(INPUT_FILE);
        PrintWriter writer = new PrintWriter(OUTPUT_FILE);
        solve(reader, writer);
        reader.close();
        writer.flush();
        writer.close();
    }

    public static void solve(TokenizedReader reader,
                             PrintWriter writer) {
        int n = reader.nextInt();
        int[] a = new int[n];
        for (int i = 0; i < n; ++i) {
            a[i] = reader.nextInt();
        }
        SortContext context = new SortContext();
        context.setStrategy(new NativeSort());
        context.sort(a);
        for (int i = 0; i < n; ++i) {
            writer.print(a[i] + " ");
        }
        writer.flush();
    }


    interface SortingStrategy {
        void sort(int[] a);
    }

    static class NativeSort implements SortingStrategy {

        @Override
        public void sort(int[] a) {
            Arrays.sort(a);
        }
    }

    static class InsertionSort implements SortingStrategy {

        @Override
        public void sort(int[] a) {
            int n = a.length;
            for (int i = 1; i < n; ++i) {
                int key = a[i];
                int pos = i - 1;
                while (pos >= 0 && a[pos] > key) {
                    // shift right
                    a[pos + 1] = a[pos];
                    --pos;
                }
                a[pos + 1] = key;
            }
        }
    }


    static class BubbleSort implements SortingStrategy {

        @Override
        public void sort(int[] a) {
            int n = a.length;
            boolean swapped;
            for (int i = 0; i < n - 1; ++i) {
                swapped = false;
                for (int j = 0; j < n - i - 1; ++j) {
                    if (a[j] > a[j + 1]) {
                        int temp = a[j];
                        a[j] = a[j + 1];
                        a[j + 1] = temp;
                        swapped = true;
                    }
                }
                if (!swapped) {
                    break;
                }
            }
        }
    }

    static class SortContext {
        private SortingStrategy strategy;

        public void setStrategy(SortingStrategy strategy) {
            this.strategy = strategy;
        }

        public void sort(int[] a) {
            strategy.sort(a);
        }
    }
}