[英]Java- How to find min and max values in sequence of integers?
我對編碼很新,我試圖通過使用Math.min和Math.max方法找到整數序列的最小值和最大值。 我想我已經找到了大部分的東西,但是當我測試它時,最小值是-2147483648,最大值是2147483647.我怎么能改變它? 這是代碼:
/**
* A class to find largest and smallest values of a sequence.
**/
public class DataSet
{
private int smallest = Integer.MIN_VALUE;
private int largest = Integer.MAX_VALUE;
/**
* Adds in integer to sequence.
* @param x the integer added
*/
public void addValue(int x)
{
smallest = Math.min(smallest, x);
largest = Math.max(largest, x);
}
/**
* Returns the smallest value.
* @return the smallest value
*/
public int getSmallest()
{
return smallest;
}
/**
* Returns the largest value.
* @return the largest value
*/
public int getLargest()
{
return largest;
}
}
這是測試人員:
/**
* A class to test the DataSet class.
*/
public class DataSetTester
{
public static void main(String[] args)
{
DataSet myData = new DataSet();
myData.addValue(11);
myData.addValue(4);
myData.addValue(6);
myData.addValue(9);
System.out.println("Smallest: " + myData.getSmallest());
System.out.println("Expected: 4");
System.out.println("Largest: " + myData.getLargest());
System.out.println("Expected: 11");
}
}
交換smallest
和largest
的初始條件。 更改
private int smallest = Integer.MIN_VALUE;
private int largest = Integer.MAX_VALUE;
至
private int smallest = Integer.MAX_VALUE;
private int largest = Integer.MIN_VALUE;
因為沒有int
值小於MIN_VALUE
(或大於MAX_VALUE
)。
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