Java 从 double 到 int 的可能有损转换
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Possible lossy conversion from double to int
提问by TigerLvr
Why am I getting the Possible lossy conversion from double to interror and how can I fix it?
为什么我会收到Possible lossy conversion from double to int错误消息，我该如何解决？
public class BinSearch {
public static void main(String [] args)
{
double set[] = {-3,10,5,24,45.3,10.5};
double l = set.length;
double i, j, first, temp;
System.out.print("Before it can be searched, this set of numbers must be sorted: ");
for (i = l-1; i>0; i--)
{
first=0;
for(j=1; j<=i; j++)
{
if(set[j] < set[first]) // location of error according to compiler
{
first = j;
}
temp = set[first];
set[first] = set[i];
set[i] = temp;
}
}
}
}
As you can see, I've already tried replacing intwith doublenear the top when declaring variables but it doesn't seem to do the job.
如您所见，在声明变量时，我已经尝试将其替换int为double接近顶部，但它似乎并没有完成这项工作。
采纳答案by Eran
Change all your variables used as array indices from double to int (i.e. the variables j, first, i). Array indices are integer.
将所有用作数组索引的变量从 double 更改为 int （即变量j, first, i）。数组索引是整数。
回答by toolkit
The array / loop indexes should be ints, not doubles.
数组/循环索引应该是整数，而不是双精度数。
When attempting to access set[j]for example, it complains about treating j as an int.
set[j]例如，当尝试访问时，它抱怨将 j 视为 int。
回答by Manish Maheshwari
Change the variable types as below. Array indices must be of type int.
如下更改变量类型。数组索引必须是int类型。
public class BinSearch {
public static void main(String [] args)
{
double set[] = {-3,10,5,24,45.3,10.5};
int l = set.length;
double temp;
int i, j, first;
System.out.print("Before it can be searched, this set of numbers must be sorted: ");
for ( i = l-1; i>0; i--)
{
first=0;
for(j=1; j<=i; j++)
{
if(set[j] < set[first])//location of error according to compiler
{
first = j;
}
temp = set[first];
set[first] = set[i];
set[i] = temp;
}
}
}
}
