398. Random Pick Index

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Given an integer array nums with possible duplicates, randomly output the index of a given target number. You can assume that the given target number must exist in the array. Implement the Solution class: - Solution(int[] nums) Initializes the object with the array nums. - int pick(int target) Picks a random index i from nums where nums[i] == target. If there are multiple valid i's, then each i

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solution.cppC++17

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