Question

public class ArrayExamples {

    public static void main(String[] args) {
    int c = 3;
    int d =2;
    System.out.println("c is " + c + " d is " + d);
    swapInts(3,2);
        int [] a = {1,2,3};
        int [] b = {2,2,3};
        int [] x = {3,45,17,2,-1,44,9,23,67,2,-6,-23,-100,12,5,1212};
        int e = 12;
        System.out.println();
        for ( int z: a){
            System.out.print( z + " ");

        }
        System.out.println();
        for ( int y: b){
            System.out.print( y + " ");
        }
        swapIntArrays (a,b);
        System.out.println();
        for ( int z: x){
            System.out.print( z + " ");
        }

        replaceLessThan(x,e);
    }


    public static void replaceLessThan(int[] x, int e) {    
        System.out.println();
        for (int counter = 0 ; counter<x.length; counter++){
            if ( x[counter] < e){
                 x[counter] = e;

            }
            System.out.print (x[counter] + " ");
        }

    }


    public static void swapInts(int c, int d){
        int temp = c;
        c=d;
        d=temp;
        System.out.println("c is " + c + " c is " + d);


    }

    public static void swapIntArrays (int []a, int []b){
        System.out.println();
        for(int i1=0; i1 < a.length; i1++){
            int temp = a[i1];
            a[i1] = b[i1];
            b[i1]= temp;

            System.out.print(a[i1] + " ");

        }
        System.out.println();

        for(int i1=0; i1 < b.length; i1++){
            System.out.print(b[i1] + " ");
        }

        System.out.println();
    }

}

我想将数组x传递给方法，并使用数组y来捕获返回的值。我试图获得一个类似于replaceLessthan的方法，该方法返回一个包含结果的数组，使原始数组保持不变。例如，在调用方法之前打印x，然后在调用方法后打印x和y。

Answer 1

public static int[] copyAndReplaceLessThan(int[] x, int e) {    
    System.out.println();
    int[] results = new int[x.length];
    for (int counter = 0 ; counter<x.length; counter++){
        if ( x[counter] < e){
             results[counter] = e;
        } else {
             results[counter] = x[counter];
        }
    }
    System.out.println(Arrays.toString(x));
    System.out.println(Arrays.toString(results));
    return results;
}

复制一个int数组，将所有小于x的值替换为12

1 个答案: