Reconstruct a String from its Burrows-Wheeler Transform solved by 145

March 18, 2014, 8:26 p.m. by Rosalind Team

In “Construct the Burrows-Wheeler Transform of a String”, we introduced the Burrows-Wheeler transform of a string Text. In this problem, we give you the opportunity to reverse this transform.

Inverse Burrows-Wheeler Transform Problem

Reconstruct a string from its Burrows-Wheeler transform.

Given: A string Transform (with a single "$" sign).

Return: The string Text such that BWT(Text) = Transform.

Sample Dataset


Sample Output


Extra Dataset

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