Question

我在plusTen（）方法中复制了原始数组，为数组中的每个值添加了10，我现在尝试在main方法中调用newArray然后打印它。它有一些简单的东西我可以忽略。

public class mod4 {

public static void main(String[] args) {

    int min;
    int max;

    // Creates array
    int[] array = new int[10];

    //Fills array
    array[0] = 10;
    array[1] = 25;
    array[2] = 34;
    array[3] = 16;
    array[4] = 86;
    array[5] = 13;
    array[6] = 47;
    array[7] = 50;
    array[8] = 26;
    array[9] = 75;

    //Prints original array
    for (int i = 0; i < array.length; i++) {
        System.out.println(array[i] + " ");
    }
    //Prints Minimum
    System.out.println("Mimimum: " + minNum(array));
    //Prints Maximum
    System.out.println("Maximum: " + maxNum(array));

    int[] newArray = plusTen(int array
    );

  //Print new array       
           for (int i = 0; i < newArray.length; i++) {
        System.out.println(newArray[i] + " ");
    }

}

//Finds Minimum value
public static int minNum(int[] array) {

    int min = array[0];
    for (int i = 1; i > array.length; i++) {

        if (array[i] < min) {
            min = array[i];
        }
    }

    return min;

}

//Finds maximum value
public static int maxNum(int[] array) {
    int max = array[0];
    for (int i = 1; i < array.length; i++) {
        if (array[i] > max) {
            max = array[i];
        }
    }

    return max;
}
//Adds ten to values in array

public static int plusTen(int[] array) {

    //makes copy of array
    int[] newArray = new int[array.length];
    for (int i = 0; i < array.length; i++) {
        newArray[i] = array[i];
    }
    //adds 10 to values in new array
    for (int i = 0; i < newArray.length; i++) {
        newArray[i] = newArray[i] + 10;

    }
}
}

Answer 1

你有一些错误：

plusTen应该返回int[]，而不是int。
这两个循环是多余的。您可以同时复制和添加。
您需要在方法结束时使用return语句。

int

plusTen(array)不属于

试试这个：

//...

    int[] newArray = plusTen(array);

//...

public static int[] plusTen(int[] array) {

    //makes copy of array plus 10
    int[] newArray = new int[array.length];
    for (int i = 0; i < array.length; i++) {
        newArray[i] = array[i] + 10;
    }
    return newArray;
}

Answer 2

您无需创建新阵列

public static void main(String[] args) {

    .....

    //Prints original array
    for (int i = 0; i < array.length; i++) {
        System.out.println(array[i] + " ");
    }

    plusTen(array);
    System.out.println("---Changed Array ----");
    for (int i = 0; i < array.length; i++) {
        System.out.println(array[i] + " ");
    }

}

public static void plusTen(int[] array) {

    for (int i = 0; i < array.length; i++) {
        array[i] = array[i] + 10;
    }
}

返回新数组并将所有值递增10

2 个答案: