JPMORGAN Coding Question – Solved

Perform a series of operations on a given array of integers. Each operation consists of two indices that define a subarray to reverse, inclusive of those indices. Return the resulting array after all operations have been applied in the specified order. Example arr = [9, 8, 7, 6, 5, 4, 3, 2, 1, 0] operations = [[0, 9], [4, 5], [3, 6], [2, 7], [1, 8], [0, 9]] In the first operation, all elements are reversed. There are no elements to the right or left. In the second operation, only the elements in the subarray defined by indices 4 to 5 are reversed. Those to the left and right remain unchanged. Similar logic is applied for further operations. Function Description Complete the function performOperations in the editor with the following parameters: int arr[n]: an array of integers int operations[q][2]: a 2-dimensional array of starting and ending indices Returns int[n]: the final array after all operations have been performed Constraints · 1 ≤ n, q ≤ 10^3 · 0 ≤ arr[i] ≤ 10^3 · 0 ≤ operations[i][0] ≤ operations[i][1] < n Sample Case 0 Input arr = [1, 2, 3] operations = [[0, 2], [1, 2], [0, 2]] Output [2, 1, 3] Explanation Step 1: Reverse arr[0:2] → [3, 2, 1] Step 2: Reverse arr[1:2] → [3, 1, 2] Step 3: Reverse arr[0:2] → [2, 1, 3]