Encode Number

The pattern can be understood as encoding the integer in a manner similar to the binary representation, but without the leading zero bit. It means you can find the encoding string by converting num + 1 to binary and then skipping the leading ‘1’.

Here’s how you can implement this:

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class Solution:
    def encode(self, num: int) -> str:
        return bin(num + 1)[3:]

The bin function will convert num + 1 to a binary string, and [3:] will slice the string to skip the first three characters (‘0b’ and the leading ‘1’). This will give you the encoding for the given integer.