python 将一个正整数分解质因数。例如,输入90,输出90=2 * 3 * 3 * 5 要求 输出的质因数按从小到大顺序排列。 测试输入:90 预期输出: 90=2*3*3*5
时间: 2023-12-23 11:03:32 浏览: 84
好的,让我来帮你分解质因数吧。以下是 Python 的代码实现:
```
def prime_factors(n):
"""
分解质因数并返回一个有序列表
"""
i = 2
factors = []
while i * i <= n:
if n % i:
i += 1
else:
n //= i
factors.append(i)
if n > 1:
factors.append(n)
return factors
def print_prime_factors(n):
"""
输出分解质因数的结果
"""
factors = prime_factors(n)
print(f"{n}=", end='')
for i in range(len(factors)):
print(factors[i], end='')
if i != len(factors) - 1:
print("*", end='')
print()
# 测试用例
n = 90
print_prime_factors(n) # 输出: 90=2*3*3*5
```
你可以将上述代码复制粘贴到 Python 环境中执行,看看结果是否符合你的要求。
相关问题
编程将一个正整数分解成质因数 例如: 输入 90 输出 90=2*3*3*5(用python语言)
可以使用以下代码将一个正整数分解成质因数:
```python
def prime_factors(n):
factors = []
i = 2
while i * i <= n:
if n % i:
i += 1
:
n //= i
factors.append(i)
if n > 1:
factors.append(n)
return factors
def decompose_number(n):
factors = prime_factors(n)
result = f"{n} = " + " * ".join(map(str, factors))
return result
number = 90
result = decompose_number(number)
print(result)
```
输出结果为:90 = 2 * 3 * 3 * 5
编程将一个正整数分解成质因数例如: 输入 90 输出 90=2*3*3*5
编程将一个正整数分解成质因数的过程可以通过循环和判断来实现。以下是一个示例代码:
```python
def prime_factors(n):
factors = []
i = 2
while i <= n:
if n % i == 0:
factors.append(i)
n = n / i
else:
i += 1
return factors
def format_factors(n, factors):
result = str(n) + " = "
for i in range(len(factors)):
result += str(factors[i])
if i != len(factors) - 1:
result += " * "
return result
def decompose_integer(n):
factors = prime_factors(n)
result = format_factors(n, factors)
return result
number = int(input("请输入一个正整数:"))
result = decompose_integer(number)
print(result)
```
运行以上代码,输入一个正整数,程序将会输出该正整数的质因数分解结果。
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