1. Number of 1 Bitshistorical

    Count the number of 1 bits in a 32-bit binary representation by shifting through each bit.

  2. Integer Power of a Numberhistorical

    Calculate a floating-point number raised to an integer power using repeated multiplication, including negative exponents.

  3. Number of Digit 1 Occurrenceshistorical

    Enumerate integers and use modulo operations to count occurrences of digit 1 in decimal representations from 1 to n.