Question: a. Describe an O(n) algorithm to remove all the even numbers from an array which contains n positive integers. Odd numbers should preserve the same

a. Describe an O(n) algorithm to remove all the even numbers from an array which contains n positive integers. Odd numbers should preserve the same relative order they were in originally.

b. Given an infinite sorted array consisting 0s and 1s. Write an efficient algorithm to find the index of first 1 in that array. Derive the time complexity of the algorithm.

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