查找数组中的最小值

Question

int min = temperature[0];
//Here, i have initialized the minium array. 
else if(temperature[i] < min) {
            min = temperature[i];

在这里我比较了数组中的值。但是由于 min 的初始化为 0。它一直将最小值为零。我如何解决它。这是我的整个代码。

 int[] temperature = new int[12];
    Scanner kb = new Scanner(System.in);

    int min = temperature[0];
    int max = temperature[0];

    int counter = 0;
    for (int i = 0; i < temperature.length; i++) {
        System.out.println("Please enter the temperature:" + i);
        temperature[i] = kb.nextInt();
        counter += temperature[i];
        if (temperature[i] > max) {
            max = temperature[i];
        }
        else if(temperature[i] < min) {
            min = temperature[i];

        }
    }
    int average = counter / temperature.length;
    System.out.println("Displaying the average temperature:" + average);
    System.out.println("The lowest temperature is:" + min);
    System.out.println("The highest temperaature is:" + max);
    }
}

Answer 1

如果数组至少有一个值，则解决方案是将 min 初始化为数组的第一个值。如果你真的想要，你也可以将它设置为 Integer.MAX_VALUE。

Answer 2

删除else，逻辑上 - 如果该值小于当前最小值，我们要更新当前最小值（无论当前最大值的状态如何）。我们实际上可以使用Math.max(int, int) 和Math.min(int, int) 使其更清晰。而且，我们不能在没有读取输入的情况下默认 min 和 max 为初始值（除非我们使用明确荒谬的值）。喜欢，

int[] temperature = new int[12];
Scanner kb = new Scanner(System.in);

int min = Integer.MAX_VALUE, max = Integer.MIN_VALUE, counter = 0;
for (int i = 0; i < temperature.length; i++) {
    System.out.println("Please enter the temperature:" + i);
    temperature[i] = kb.nextInt();
    counter += temperature[i];
    max = Math.max(max, temperature[i]);
    min = Math.min(min, temperature[i]);
}
int average = (int) (counter / (double) temperature.length);
System.out.println("Displaying the average temperature:" + average);
System.out.println("The lowest temperature is:" + min);
System.out.println("The highest temperaature is:" + max);

否则，您需要两个循环。最后，请注意您在计算 average 时使用了整数数学。您可能想要浮点数学。

或者，更好的是，使用IntSummaryStatisticslike

int[] temperature = new int[12];
Scanner kb = new Scanner(System.in);
for (int i = 0; i < temperature.length; i++) {
    System.out.println("Please enter the temperature:" + i);
    temperature[i] = kb.nextInt();
}
IntSummaryStatistics iss = IntStream.of(temperature).summaryStatistics();

System.out.println("Displaying the average temperature:" + iss.getAverage());
System.out.println("The lowest temperature is:" + iss.getMin());
System.out.println("The highest temperaature is:" + iss.getMax());
System.out.println("The total of all values is:" + iss.getSum());