使用反向方法/数组-如何打印反向

Question

public static void main(String[] args) {
    int[] HwArray = new int[10];
    int count = 0;
    String separate = "";
    for (int i = 0; i < HwArray.length; i++) {
        System.out.print(separate);

        //Generate random numbers
        HwArray[i] = (int) (100 + Math.random() * 100);
        System.out.println("HwArray[" + i + "]=" + HwArray[i]);
    }

    int location = linearSearch(HwArray, 150);
    System.out.println("\nLinear Search Result: " + location);
}

// Reverse the order of all elements, then print HwArray.
public static int[] reverse(int[] list) {
    int[] result = new int[list.length];
    for (int i = 0, j = result.length - 1; i < list.length; i++, j--) {
        result[j] = list[i];
        System.out.println("HwArray[" + i + "]=" + result[j]);
    }

    return result;
}

public static int linearSearch(int[] list, int key) {
    for (int i = 0; i < list.length; i++) {
        if (list[i] == key)
            return i;  //return the index location

    }

    return -1;   //return if number is not found in the index
}

我正在尝试在 Reverse 中打印出元素，但它只会打印出元素。我不确定出了什么问题。

Answer 1

在提问之前请多研究一下，也许是谷歌“java反向数组”。我就是这样做的，发现这个人问了同样的事情。 Reversing an Array in Java

解决方法很简单：

List<Integer> lst = Arrays.asList(list); //Converts the int "list" into a list.
Collections.reverse(lst); //Reverses the list.
result = list.toArray(lst);