java一维数组排序

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Java一维数组排序

仅供参考

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一维数组升序方法

public static int[] sort1(int[] arr){
    
    //升序
        for (int i = 0; i <arr.length ; i++) {
    
    
            for (int j = 0; j <arr.length-i-1 ; j++) {
    
    
                if(arr[j] > arr[j+1]) {
    
    
                    int temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
        //foreach
        for (int i : arr) {
    
    
            System.out.println(i+",");
        }
        return arr;
    }

一维数组降序方法

public static int[] sort2(int[] arr){
    
    //降序
        for (int i = 0; i <arr.length ; i++) {
    
    
            for (int j = 0; j <arr.length-i-1 ; j++) {
    
    
                if(arr[j] < arr[j+1]) {
    
    
                    int temp = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = temp;
                }
            }
        }
        for (int i : arr) {
    
    
            System.out.print(i+",");
        }
        return arr;
    }

main

public static void main(String[] args) {
    
    

        System.out.println ("你将要排序几个数：");
        Scanner scan = new Scanner(System.in);
        int a = scan.nextInt();
        int[] arr = new int[a];
        System.out.println("请依次输入数据：");
        for (int i = 0; i < arr.length; i++) {
    
    
            System.out.println("请输入第"+(i+1)+"个数：");
            arr[i]=scan.nextInt();
        }
        System.out.println("升序排序结果如下：");
        System.out.println(Arrays.toString(sort1(arr)));//以数组形式输出
        System.out.println("降序排序结果如下：");
        System.out.println(Arrays.toString(sort2(arr)));

    }
}

main方法可简化