Little programs, just for fun.
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add_by_bit.c: Implement an adder by C. A function for caculating the sum of two int number without + - * /
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first_appare_onlyonce.py: Get the very first character that appears only once from a string. Assume ascii.
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n_factorial_numberof_zeroes.py Caculate number of zeroes of N! with given N.
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symmetric_string.py Get the longest symmetric substring from a string. Manacher Algorithm. (Assume the string doesn't have # ? $)