我到处寻找解决方案以找到第二大数字,但我在所有站点中都得到了一个解决方案,这是错误的。
我找到的代码:
public static void main(String[] args) {
int arr[] = { 1, 23, 47, 81, 92, 88, 52, 48, 56, 66, 65, 76, 71, 85,
49, 53, 56, 61, 65, 84 };
secondLargeNumber(arr);
}
public static void secondLargeNumber(int[] arr) {
int largest = arr[0];
int secondLargest = arr[0];
for (int i = 0; i < arr.length; i++) {
if (arr[i] > largest) {
secondLargest = largest;
largest = arr[i];
} else if (arr[i] > secondLargest) {
secondLargest = arr[i];
}
}
System.out.println("second largest in array is:" + secondLargest);
}
代码工作正常,但是如果我将输入序列更改为:
int arr[] = { 11, 10, 11, 2, 3, 4, 5, 6, 7, 8};
输出将是:
second largest in array is:11
我真的不知道该怎么办!
只需执行以下操作:
else if (arr[i] > secondLargest && arr[i] != largest) {
secondLargest = arr[i];
}
问题来自这里:-
int largest = arr[0];
int secondLargest = arr[0];
尝试使用最少的数字初始化变量,如下所示:
int secondlargest = Integer.MIN_VALUE;
int largest = Integer.MIN_VALUE;
这个怎么样:-
int secondlargest = Integer.MIN_VALUE;
int largest = Integer.MIN_VALUE;
Scanner input = new Scanner(System.in);
System.out.println("Enter array values: ");
int arr[] = new int[5];
for (int i = 0; i < arr.length; i++) {
arr[i] = input.nextInt();
if (largest < arr[i]) {
secondlargest = largest;
largest = arr[i];
}
if (secondlargest < arr[i] && largest != arr[i])
secondlargest = arr[i];
}
您需要添加两个内容:
- 正如其他帖子所建议的那样!=最大的支票
-
如果最大值和第二大值开始时值相同,请尽快将第二大值切换到较小的值。
for (int i = 0; i < arr.length; i++) { if (arr[i] > largest) { secondLargest = largest; largest = arr[i]; } else if (arr[i] > secondLargest && arr[i]!=largest) { secondLargest = arr[i]; }else if(largest==secondLargest){ secondLargest = arr[i]; } }
public static void secondLargeNumber(int[] arr) {
int largest = Integer.MIN_VALUE;
int secondLargest = Integer.MIN_VALUE;
for (int i = 0; i < arr.length; i++) {
if (arr[i] > largest) {
secondLargest = largest;
largest = arr[i];
} else if (arr[i] > secondLargest && arr[i] != largest) {
secondLargest = arr[i];
}
}
System.out.println("second largest in array is:" + secondLargest);
}