我的代码在运行时为什么返回false?
//Main
public class blah {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
Strict run = new Strict();
//Input
int[][] m1 = new int[3][3];
int[][] m2 = new int[3][3];
System.out.print("Enter 9 numbers for List 1 / Enter 9 numbers for List 2\n");
for (int arr1 = 0; arr1 < m1.length; arr1++) {
for (int arr2 = 0; arr2 < m1[arr1].length; arr2++) {
m1[arr1][arr2] = input.nextInt();
}
}
for (int arr1 = 0; arr1 < m2.length; arr1++) {
for (int arr2 = 0; arr2 < m2[arr1].length; arr2++) {
m1[arr1][arr2] = input.nextInt();
}
}
//The arrays are strictly equal
System.out.print("");
System.out.print("The arrays are strictly equal: " + run.equals(m1, m2));
}
}
class Strict {
//1.) The arrays are strictly equal
public static boolean equals(int[][] m1, int[][] m2) {
boolean isitEqual = false;
for (int i = 0; i < m1.length; i++) {
for (int j = 0; j < m1.length; j++) {
if (m1[i][j] != m2[i][j]) {
return false;
}
}
}
return isitEqual;
}
}
如果还有其他问题,我有什么问题吗?还是在嵌套的for循环中?结果如下:
为列表1输入9个数字/为列表2输入9个数字
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9数组严格相等:false
*********************更新:已更正代码***************************** **************
//Library Imports
import java.util.Scanner;
import java.util.Arrays;
//Main
public class blah
{
public static void main (String[] args)
{
Scanner input = new Scanner(System.in);
Strict run = new Strict();
//Input
int [][] m1 = new int[3][3];
int [][] m2 = new int[3][3];
System.out.print("Enter 9 numbers for List 1 / Enter 9 numbers for List 2\n");
for (int arr1 = 0; arr1 < m1.length; arr1++)
{
for (int arr2 = 0; arr2 < m1[arr1].length; arr2++)
{
m1[arr1][arr2] = input.nextInt();
}
}
for (int arr1 = 0; arr1< m2.length; arr1++)
{
for (int arr2 = 0; arr2<m2[arr1].length; arr2++)
{
m2[arr1][arr2] = input.nextInt();
}
}
//The arrays are strictly equal
System.out.print("");
System.out.print("The arrays are strictly equal: " + run.equals(m1,m2));
}
}
class Strict
{
//1.) The arrays are strictly equal
public static boolean equals(int [][]m1, int [][]m2)
{
boolean isitEqual = true;
for (int i = 0; i < m1.length; i++)
{
for (int j = 0; j < m1.length; j++)
{
if (m1[i][j] != m2[i][j])
{
return false;
}
}
}
return isitEqual;
}
}
您最初将isitEqual设置为false,并且永远不会在equals()方法中的任何地方将其更改为true。
您可以替换
return isitEqual;
和
return true;
然后删除
boolean isitEqual = false;
一起使用,也可以在初始化时将其设置为true:
boolean isitEqual = true;
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