This function first checks if the input n is less than or equal to 1, and returns FALSE in that case, because 1 is not considered a prime number. Next, the function uses a for loop to check if n is evenly divisible by any number between 2 and n-1. If n is evenly divisible by any of these numbers, the function returns FALSE, as n is not a prime number. If none of the numbers between 2 and n-1 divide n evenly, the function returns TRUE, indicating that n is a prime number.
时间: 2023-02-19 09:08:37 浏览: 53
是的,根据你提供的日期,我可以告诉你,这个函数首先检查输入n是否小于或等于1,如果是,则返回FALSE,因为1不被认为是质数。接下来,该函数使用for循环检查n是否能够被2到n-1之间的任何数字整除。如果n能够被这些数字之一整除,则函数返回FALSE,表示n不是质数。如果2到n-1之间的数字都不能整除n,则函数返回TRUE,表示n是质数。
相关问题
Write a function, is_prime, that takes a single integer argument and returns True when the argument is a prime number and False otherwise.
Sure! Here's the Python code for the is_prime function:
```
def is_prime(n):
if n <= 1:
return False
for i in range(2, int(n**0.5) + 1):
if n % i == 0:
return False
return True
```
This function takes a single integer argument `n` and returns `True` when `n` is a prime number and `False` otherwise. The function first checks if `n` is less than or equal to 1, as 1 is not a prime number. Then it loops through all the integers from 2 to the square root of `n`, checking if any of them divide `n` without a remainder. If any such integer is found, `n` is not a prime number and the function returns `False`. Otherwise, `n` is a prime number and the function returns `True`.
Given a positive integer 'n', the task is to find a prime number greater than or equal to 'n'. the output should be y
Sure, I can help you with that. Here's a Python code snippet that finds the next prime number greater than or equal to a given integer 'n':
```python
def is_prime(num):
"""
Returns True if the given number is prime, False otherwise.
"""
if num < 2:
return False
for i in range(2, int(num ** 0.5) + 1):
if num % i == 0:
return False
return True
def next_prime(n):
"""
Returns the next prime number greater than or equal to the given number.
"""
num = n
while True:
if is_prime(num):
return num
num += 1
# Example usage
n = 10
print(next_prime(n)) # Output: 11
```
The `is_prime()` function checks if a given number is prime or not by iterating from 2 to the square root of the number and checking if it is divisible by any of the numbers in between.
The `next_prime()` function takes an integer `n` as input and starts iterating from `n` until it finds the next prime number using the `is_prime()` function. Once it finds a prime number, it returns it as output.
Hope this helps!