int max = Integer.MIN_VALUE; for (int i = 0; i < arr.length; i++) { max = Math.max(max, arr[i]); }
时间: 2024-05-27 15:12:13 浏览: 15
The code above finds the maximum value in an integer array called "arr".
The variable "max" is initialized to the minimum possible integer value using the constant "Integer.MIN_VALUE".
Then, a for loop is used to iterate through each element of the array. The loop starts at index 0 and continues until it reaches the end of the array (arr.length).
In each iteration, the Math.max() method is used to compare the current element of the array with the current maximum value stored in the "max" variable. If the current element is greater than the current maximum value, it becomes the new maximum.
After the loop finishes, the "max" variable holds the maximum value in the array.
相关问题
int[] arr = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}不重复的取最大值,直到结束
你可以使用以下代码来找到不重复的最大,并在每次取值后将其从数组中删除,直到数组为空:
```java
int[] arr = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
int max = Integer.MIN_VALUE;
while (arr.length > 0) {
int index = 0;
for (int i = 1; i < arr.length; i++) {
if (arr[i] > arr[index]) {
index = i;
}
}
int currentMax = arr[index];
max = Math.max(max, currentMax);
int[] newArr = new int[arr.length - 1];
System.arraycopy(arr, 0, newArr, 0, index);
System.arraycopy(arr, index + 1, newArr, index, newArr.length - index);
arr = newArr;
}
System.out.println("最大值: " + max);
```
这段代码会遍历数组,每次找到当前最大的值并更新最大值。然后,它会创建一个新的数组,将当前最大值之前和之后的元素复制到新数组中,并将新数组赋值给原始数组。这样,每次迭代时都会删除已经取过的最大值。最后,它会输出最大值。
注意:这段代码假设数组中的元素都是正整数,如果数组中包含负数或零,你可能需要对代码进行适当的修改。
java 编写程序,从键盘输入10个整数,并存放到一个数组中,然后计算所有元素的和、最大值、最小值及平均值
```
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int[] arr = new int[10];
int sum = 0;
int max = Integer.MIN_VALUE;
int min = Integer.MAX_VALUE;
for (int i = 0; i < arr.length; i++) {
System.out.print("请输入第" + (i+1) + "个整数:");
arr[i] = input.nextInt();
sum += arr[i];
max = Math.max(max, arr[i]);
min = Math.min(min, arr[i]);
}
double avg = (double) sum / arr.length;
System.out.println("所有元素的和为:" + sum);
System.out.println("最大值为:" + max);
System.out.println("最小值为:" + min);
System.out.println("平均值为:" + avg);
}
}
```
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