Array.sort() 升序降序 -- 成绩前三名 TOP3

public class Top3 {

	public static void main(String[] args) {
		int[] scores = { 76, 53, 28, 91, 130, 40, 73 };
		Top3 top3 = new Top3();
		top3.tops(scores);
	}

	// 定义方法完成成绩排序并输出前三名的功能

	public void tops(int[] scores) {
		Arrays.sort(scores);
		int len = scores.length;
		//默认升序排序
		System.out.println("升序:");
		for (int i = 0; i < len; i++) {
			System.out.print(scores[i] + "\t");
		}
		System.out.println();
		
		//降序排序
		System.out.println("降序:");
		for (int i = len - 1; i >= 0; i--) {
			System.out.print(scores[i] + "\t");
		}
		System.out.println();
	
		//倒着输出成绩,取数组后面3个最高分的成绩
		System.out.println("前三名:");
		for (int i = len - 1; i > (len - 4) ; i--) {
			System.out.print(scores[i] + "\t");
		}
	}

}

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转载自blog.csdn.net/Mercwang/article/details/81030334