## BJP3 Exercise 7.7: kthLargest

Added by: Whitaker Brand on 04/01

Write a method called `kthLargest` that accepts an integer `k` and an array `a` as its parameters and returns the element such that k elements have greater or equal value. If `k = 0`, return the largest element; if k = 1, return the second largest element, and so on.

For example, if the array passed contains the values `{74, 85, 102, 99, 101, 56, 84}` and the integer k passed is `2`, your method should return `99` because there are two values at least as large as `99 (101` and `102`).

Assume that `0` <= k < a.length. (Hint: Consider sorting the array, or a copy of the array first.)

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