Question

这是我到目前为止所拥有的

 double[] num = {1.9, 2.9, 3.4, 3.5};
 double max = num [0];
    for (int i = 1 ; i < num.length ; i++)
    {
        if (num [i] > max)
            max = num [i]; 
    }
    System.out.println ("Max is " + max);

我需要找到最大值的索引。我已经尝试通过在if语句中放入一个句子来打印索引，并且我也尝试将i存储到另一个变量中。他们都没有工作。

Answer 1

您需要跟踪最大值及其索引。

public class GetMaxIndex {
    public static void main(final String[] args) {
        final double[] numbers = { 1.9, 2.9, 3.4, 3.5 };
        double maxNumber = numbers[0];
        int maxIndex = 0;
        for (int i = 1; i < numbers.length; i++) {
            if (numbers[i] > maxNumber) {
                maxNumber = numbers[i];
                maxIndex = i;
            }
        }
        System.out.println("Max is " + maxNumber);
        System.out.println("Index of max is " + maxIndex);
    }
}

Answer 2

double[] num = {1.9, 2.9, 3.4, 3.5};
double max = num[0];
int    maxIndex = 0;
for (int i = 1 ; i < num.length ; i++)
{
   if (num[i] > max)
  {
    maxIndex = i
    max = num[i]; 
  }
}
System.out.println("Max is " + max);
System.out.println("Max index is + maxIndex);

如何找到最大数组值的索引？

2 个答案: