英文:
Unable to compare two values within the 2D array
问题
我正在解决一个问题，需要在二维数组中比较两个值，但是我无法得到输出。请帮助我解决这个问题。这是我的代码片段：
int arr[][] = new int[N][N];
for (j = 0; j < arr.length; j++) {
for (k = 0; k < arr[j].length - 1; k++) {
if (arr[j][k] == arr[j][k + 1])
c++;
}
}
英文:
I am working on a problem in which I have to compare two values within the 2D array but I am unable to get the output. Kindly help me to come out of this problem. Here's a glimpse of my code:
int arr[][]=new int[N][N];
for(j=0;j<arr.length;j++)
{
for(k=0;k<arr[j].length;k++)
{
if(arr[j][k]==arr[j][k+1])
c++;
}
}
答案1
得分: 1
问题是，由于比较if(arr[j][k]==arr[j][k+1])，你会得到一个ArrayOutOfBoundsException（数组越界异常）。这会在你到达数组的最后一个元素时发生，因为当k严格小于arr[j].length时，k+1元素是不存在的。
也许你想将条件改为k<arr[j].length-1。但我不确定你实际想要通过这段代码实现什么。
英文:
The problem is that you will get an ArrayOutOfBoundsException due to the comparison if(arr[j][k]==arr[j][k+1]). This happens when you reach the last element of the array since when k is strictly less than arr[j].length, then k+1 element doesn't exist.
Maybe you want to change the condition to k<arr[j].length-1. But I am not sure what you actually what to achieve with the code.
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