How to Solve Decompress Run- Length Encoded List Problem
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Decompress Run-Length Encoded List
We are given a list nums of integers representing a list compressed with run-length encoding. Consider each adjacent pair of elements [freq, val] = [nums[2*i], nums[2*i+1]] (with i >= 0). For each su...
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Understanding the Decompress Run- Length Encoded List Problem
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Problem Statement
We are given a list nums of integers representing a list compressed with run-length encoding. Consider each adjacent pair of elements [freq, val] = [nums[2*i], nums[2*i+1]] (with i >= 0). For each such pair, there are freq elements with value val concatenated in a sublist. Concatenate all the sublists from left to right to generate the decompressed list. Return the decompressed list.
Decompress Run-Length Encoded List
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Examples
nums = [1,2,3,4][2,4,4,4]The first pair [1,2] means we have freq = 1 and val = 2 so we generate the array [2]. The second pair [3,4] means we have freq = 3 and val = 4 so we generate [4,4,4]. At the end the concatenation [2] + [4,4,4] is [2,4,4,4].
nums = [1,1,2,3][1,3,3]Constraints
2 <= nums.length <= 100nums.length % 2 == 01 <= nums[i] <= 100How Interview Coder Helps with Leetcode Problems
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