Answer: HALLIBURTON Hiring | On-Campus OA (2024) | Count the Hidden Sequences

Approach Instead of constructing every possible sequence: Compute the prefix sums of the differences. Track the minimum and maximum prefix sum. Determine the valid range of the first element. The size of this range gives the answer. Strategy Initialize prefix sum as 0. Track minimum and maximum prefix sums. Traverse the differences array. Compute the valid starting range using: Minimum prefix Maximum prefix Return the number of valid starting values. Java Code class Solution { public int numberOfArrays(int[] differences, int ...