Python: Implement pow(x, n)
Python Class: Exercise-7 with Solution
Write a Python class to implement pow(x, n).
Sample Solution:
Python Code:
class py_solution:
def pow(self, x, n):
if x==0 or x==1 or n==1:
return x
if x==-1:
if n%2 ==0:
return 1
else:
return -1
if n==0:
return 1
if n<0:
return 1/self.pow(x,-n)
val = self.pow(x,n//2)
if n%2 ==0:
return val*val
return val*val*x
print(py_solution().pow(2, -3));
print(py_solution().pow(3, 5));
print(py_solution().pow(100, 0));
Sample Output:
0.125 243 1
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Previous: Write a Python class to find the three elements that sum to zero from a set (array) of n real numbers.
Next: Write a Python class to reverse a string word by word.
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Python: Tips of the Day
The Zip() Function:
>>> students = ('John', 'Mary', 'Mike') >>> ages = (15, 17, 16) >>> scores = (90, 88, 82, 17, 14) >>> for student, age, score in zip(students, ages, scores): ... print(f'{student}, age: {age}, score: {score}') ... John, age: 15, score: 90 Mary, age: 17, score: 88 Mike, age: 16, score: 82 >>> zipped = zip(students, ages, scores) >>> a, b, c = zip(*zipped) >>> print(b) (15, 17, 16)
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