Finding the first missing number given the list with numbers [reviewed]
Problem Given input [2,3,1,5,88,100], find the first missing number. All number are positive numbers. (1 - n) In the above example, 4 is the first missing number.
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Power of 3 problem
Problem Write function to determine if given unsigned 32-bit number is a power of 3 int is_power_of_3(uint32_t n)