Peaks And Lows
Find the peaks and lows in a given array of integers.
Medium1/15/2024
Problem statement
Given an array of integers, find the local peaks and lows (local extremums) in the array. Return a string with a P for each peak, an L for each low and a - for each other element.
Notes:
- Start and end elements are either peaks or lows
- There are no consecutive identical numbers
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