Analyst/A4

Find the missing symbol in a 4×4 or 5×5 grid based on Geometrical Sudoku, Inductive-Logical Reasoning (Spacio Challenge), and Visual Reasoning-based questions, where you are supposed to find a pair of figures that follow the same rule as given by a pair in the question.

Given an unsorted array of integers, you have to move the array elements in a way such that all the zeroes are transferred to the end, and all the non-zero elements are moved to the front. The non-zero elements must be ordered in their order of appearance.

For example, if the input array is: [0, 1, -2, 3, 4, 0, 5, -27, 9, 0], then the output array must be:

[1, -2, 3, 4, 5, -27, 9, 0, 0, 0].

Expected Complexity: Try doing it in O(n) time complexity and O(1) space complexity. Here, ‘n’ is the size of the array.

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