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Grokking the Coding Interview Patterns in JavaScript

Solution: Next Greater Element I

Discover how to implement a hash map and monotonic stack solution to find the next greater elements for an array subset. Learn to optimize time and space complexity while understanding key operations on hash maps and stacks.

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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 ...