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Perfect Cubes in a Range
Basic Accuracy: 24.99% Submissions: 148 Points: 1

Given two given numbers a and b where 1<= a <= b, find the perfect cubes between a and b (a and b inclusive).

Example 1:

Input: a = 1, b = 100
Output: 1 8 27 64
Explaination: These are the proper cubes between 
1 and 100.

Example 2:

Input: a = 24, b = 576
Output: 27 64 125 216 343 512
Explaination: These are the proper cubes between 
24 and 576.

Your Task:
You do not need to read input or print anything. Your task is to complete the function properCubes() which takes a and b as input parameters and returns the proper cubes between a and b. The function returns -1 if there is no proper cube between the given values.

Expected Time Complexity: O(cuberoot(b))
Expected Auxiliary Space: O(1)

1 ≤ a ≤ b ≤ 104

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