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Grokking the Coding Interview Patterns in Go

Solution: Next Greater Element I

Explore the efficient solution for finding the next greater element in arrays nums1 and nums2. Learn how to use a monotonic stack and a hash map to optimize time complexity from O(n1×n2) to O(n). Understand the step-by-step algorithm and see how to handle edge cases with this pattern.

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Statement

Given the two distinct integer arrays, nums1 and nums2, where nums1 is a subset of nums2, find all the next greater elements for nums1 values in the corresponding places of nums2.

In general, the next greater element of an element, xx, in an array is the first greater element present on the right side of xx in the same array. However, in the context of this problem, for each element xx in nums1, find the next greater element present on the right side of xx in nums2 and store it in the ans array. If there is no such element, store ...