# 3 python functions

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Exercise 1:
Create a function that accepts a single array as an argument. Given an array of integers, x, sort x and split the integers into three smaller arrays of equal length. If the length of x is not evenly divisible by three, increase the size of the smaller arrays by one starting from the first array. The function should return an array of arrays. Example: Input = [2,1,3,4,7,5,9,6,8,13,12,11,10,0,15,16,14] Output = [ [0, 1, 2, 3, 4, 5], [6, 7, 8, 9, 10, 11], [12, 13, 14, 15, 16] ]Exercise 2:
Write a function that find the frequency occurrence of a letter in a sentence. The function should return an integer. (Do not use the str.count() default python function) Examples: find_frequency(“t”, “this is a test”) → 3 find_frequency(“y”, “this is a test”) → 0Exercise 3:
Write a function that identifies if an integer is a power of 2. The function should return a boolean. Explain why your function will work for any integer inputs that it receives. Examples: is_power_two(6) → false is_power_two(16) → true