Base Check
1234567891011121314151617181920212223242526272829303132333435363738394041
def is_valid_number(n, base):
baseTwo = {chr(i) for i in range(ord('0'), ord('1') + 1)}
baseEight = {chr(i) for i in range(ord('0'), ord('7') + 1)}
baseTen = {chr(i) for i in range(ord('0'), ord('9') + 1)}
baseSixteen = {chr(i) for i in range(ord('0'), ord('9') + 1)} | {chr(i) for i in range(ord('A'), ord('F') + 1)}
baseThirtyTwo = {chr(i) for i in range(ord('0'), ord('9') + 1)} | {chr(i) for i in range(ord('A'), ord('Z') + 1)}
nUpperCase = n.upper()
if base >= 2 and base < 8:
return all(char in baseTwo for char in nUpperCase)
if base >= 8 and base < 10:
return all(char in baseEight for char in nUpperCase)
if base >= 10 and base < 16:
return all(char in baseTen for char in nUpperCase)
if base >= 16 and base < 32:
return all(char in baseSixteen for char in nUpperCase)
if base >= 32:
return all(char in baseThirtyTwo for char in nUpperCase)
return False
"""
Given a string representing a number, and an integer base from 2 to 36, determine whether the number is valid in that base.
• The string may contain integers, and uppercase or lowercase characters.• The check should be case-insensitive.
• The base can be any number 2-36.
• A number is valid if every character is a valid digit in the given base.
• Example of valid digits for bases:• Base 2: 0-1• Base 8: 0-7
• Base 10: 0-9
• Base 16: 0-9 and A-F
• Base 36: 0-9 and A-Z
"""
result = is_valid_number("10101", 2)
print(f"10101 is valid number for base 2? {result}")
result = is_valid_number("9876543210", 8)
print(f"9876543210 is valid number for base 8? {result}")
Python
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