java - 如何将一个整数数组分成两个

Question

我想将我的数组分成两部分:上部和下部但这行不通它只是为我打印排序我放置随机打印语句以确保条件为真，并且确实如此

在偶数条件下，它读取 if 和 for 语句但奇怪的是它只读取 if 语句

这是我的代码

public static int GetTheLowerHalfandUpperHalf(int[] array) {
    int size = array.length;
    int even = size%2;
   if (even == 0) {
       //print the lower half
       for(int i=0; i==even;i++) {
           int[] upper;
           upper = new int[i];
           System.out.println("The UPPER half is: "+Arrays.toString(upper));
           System.out.println("Q3 = " +median(upper));
       }
       //print the upper half
       for (int j=(even+1);j==size;j++) {
          int[] lower;
        lower=new int[j];
        System.out.println("The UPPER half is: "+Arrays.toString(lower)); 
        System.out.println("Q1 = " +median(lower));
       }


    } else if ((array.length % 2) != 0) { 
        //print the lower half
       for (int i=0;i==(Q2-1);i++) {
           int[] upper;
           upper = new int[i];
           System.out.println("The UPPER half is: "+Arrays.toString(upper));
           System.out.println("Q3 = " +median(upper));
       }
       //print the upper half
       for(int j=(Q2+1) ;j==size ;j++ ){
        int[] lower;
        lower=new int[j];
        System.out.println("The UPPER half is: "+Arrays.toString(lower));
        System.out.println("Q1 = " +median(lower));
    }
    }
   return 0;
}    

Q2是整个数组的中位数

Answer 1

替代解决方案:

int[] firstHalf = Arrays.copyOfRange(array, 0, array.length/2);
int[] secondHalf = Arrays.copyOfRange(array, array.length/2, array.length);

然后您当然可以执行您的 median() 方法:

int firstMedian = median(firstHalf);

请记住，您不必重新发明轮子，但您必须使轮子适合您的汽车。