WeChall - CGX#3 - Binary Encoding

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Challenge

The page shows a random 8-bit binary string and asks for its decimal equivalent:

Please convert this binary data to a decimal number. 01100101

The number is randomly generated and bound to your session.

Solution

Convert with Python or JavaScript:

1
2
>>> int('01100101', 2)
101
1
2
> parseInt('01100101', 2)
101

Manual: each bit position is a power of 2, from right (2^0) to left (2^7). 01100101 = 64+32+4+1 = 101.

Since the challenge is session-bound, you'll see a different number each visit — the method stays the same.