38 lines
1.4 KiB
Java
38 lines
1.4 KiB
Java
package strategy;
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import java.util.Arrays;
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/**
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* Strategy Design Pattern — Runnable Demo
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* Run: javac strategy/*.java -d out/strategy && java -cp out/strategy strategy.Main
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* Article: https://ankurm.com/strategy-design-pattern-java/
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*/
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public class Main {
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public static void main(String[] args) {
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System.out.println("=== Strategy Design Pattern Demo ===\n");
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int[] data = {64, 34, 25, 12, 22, 11, 90};
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System.out.println("Input: " + Arrays.toString(data));
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Sorter sorter = new Sorter(new BubbleSort());
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System.out.println("\n-- BubbleSort --");
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System.out.println("Sorted: " + Arrays.toString(sorter.sort(data)));
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sorter.setStrategy(new MergeSort());
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System.out.println("\n-- MergeSort --");
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System.out.println("Sorted: " + Arrays.toString(sorter.sort(data)));
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sorter.setStrategy(new QuickSort());
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System.out.println("\n-- QuickSort --");
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System.out.println("Sorted: " + Arrays.toString(sorter.sort(data)));
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System.out.println("\n-- Runtime strategy selection (simulating large dataset) --");
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int size = 10_000;
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SortStrategy chosen = size > 1000 ? new QuickSort() : new BubbleSort();
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sorter.setStrategy(chosen);
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System.out.println(" Chose " + chosen.getName() + " for size=" + size);
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System.out.println("\n=== Demo complete ===");
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}
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}
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