Return the number of even ints in the given array. Note: the % "mod" operator computes the remainder, e.g. 5 % 2 is 1.
时间: 2024-02-15 14:01:51 浏览: 19
Sure, I can help you with that! Here's a Python code snippet that counts the number of even integers in an array:
```python
def count_even_numbers(arr):
count = 0
for num in arr:
if num % 2 == 0:
count += 1
return count
```
You can call this function with your array as an argument to get the number of even integers in the array. For example:
```python
arr = [1, 2, 3, 4, 5, 6]
count = count_even_numbers(arr)
print(count) # Output: 3
```
In this example, `count` will be equal to 3 because there are three even integers in the array (`2`, `4`, and `6`).
相关问题
use java Return the number of even ints in the given array. Note: the % "mod" operator computes the remainder, e.g. 5 % 2 is 1. countEvens([2, 1, 2, 3, 4]) → 3 countEvens([2, 2, 0]) → 3 countEvens([1, 3, 5]) → 0
可以使用以下代码来实现:
```java
public int countEvens(int[] nums) {
int count = 0;
for (int i = 0; i < nums.length; i++) {
if (nums[i] % 2 == 0) {
count++;
}
}
return count;
}
```
该方法遍历整个数组,如果当前数字是偶数,则将计数器加1。最后返回计数器的值即为偶数个数。
Which is used to define the member of a class externally? a. : b. :: c. # d. !!$
b. ::
The scope resolution operator `::` is used to define a member of a class externally in C++. This allows the definition of a member function or a static data member to be separate from its declaration in the class definition.
For example:
```
class MyClass {
public:
void myFunction(); // declaration
static int myStaticVariable; // declaration
};
// definition of myFunction
void MyClass::myFunction() {
// function body
}
// definition of myStaticVariable
int MyClass::myStaticVariable = 0;
```
In the example above, `myFunction` and `myStaticVariable` are declared in the class definition, but their definitions are provided externally using the scope resolution operator `::`. This allows the implementation of the member functions and static data members to be separated from the class definition, which can make the code easier to manage and understand.