【发布时间】:2013-11-15 13:26:47
【问题描述】:
以下是工作代码的“主要”主体:
public class ArrayFunHouse
{
//instance variables and constructors could be used, but are not really needed
//getSum() will return the sum of the numbers from start to stop, not including stop
public static int getSum(int[] numArray, int start, int stop)
{
int sum = 0;
for(int count = start; count <= stop; count++) {
sum += numArray[count];
}
return sum;
}
//getCount() will return number of times val is present
public static int getCount(int[] numArray, int val)
{
int present = 0;
for(int count = 0; count < numArray.length; count++) {
if(numArray[count] == val) {
present++;
}
}
return present;
}
public static int[] removeVal(int[] numArray, int val)
{
int[] removal = new int[numArray.length - getCount(numArray, val)];
int arbitrary = 0;
for(int count = 0; count < removal.length; count++) {
if(numArray[count] == val) {
arbitrary++;
} else {
removal[count - arbitrary] = numArray[count];
}
}
return removal;
}
}
还有跑步者类:
import java.util.Arrays;
public class ArrayFunHouseRunner
{
public static void main( String args[] )
{
int[] one = {4,10,0,1,7,6,5,3,2,9};
System.out.println(Arrays.toString(one));
System.out.println("sum of spots 3-6 = " + ArrayFunHouse.getSum(one,3,6));
System.out.println("sum of spots 2-9 = " + ArrayFunHouse.getSum(one,2,9));
System.out.println("# of 4s = " + ArrayFunHouse.getCount(one,4));
System.out.println("# of 9s = " + ArrayFunHouse.getCount(one,9));
System.out.println("# of 7s = " + ArrayFunHouse.getCount(one,7));
System.out.println("new array with all 7s removed = "+ ArrayFunHouse.removeVal(one, 7));
}
}
返回我在尝试打印没有 toString 的类时所期望的内容,即:
[4, 10, 0, 1, 7, 6, 5, 3, 2, 9]
sum of spots 3-6 = 19
sum of spots 2-9 = 33
number of 4s = 1
number of 9s = 1
number of 7s = 1
new array with all 7s removed = [I@56f7ce53
我知道我在跑步者中正确调用了它,没有太多可搞砸的地方,无法查明问题,有什么建议吗?
最终编辑:这很尴尬。问题实际上出在跑步者身上,而不是调用 Arrays.toString。
【问题讨论】:
-
您如何打印该值?
-
向我们展示您调用该方法并使用其返回值的代码。你可能认为你没有把那部分搞砸,但所有证据都表明你确实做到了。
-
使用
Arrays.toString(array) -
"返回我在尝试打印没有 toString 的类时所期望的内容,即:[I@56f7ce53" - 完全正确。数组不会覆盖
toString。