Sept. 18, 2015, 2:48 a.m. by Rosalind Team
Given an amino acid string Peptide, its ideal spectrum, denoted IdealSpectrum(Peptide), is the collection of integer masses of all its prefixes and suffixes. Note that an ideal spectrum may have repeated masses; for example, IdealSpectrum(GPG) = {0, 57, 57, 154, 154, 211}. We say that an amino acid string Peptide explains a collection of integers Spectrum if IdealSpectrum(Peptide) = Spectrum.
The following pseudocode finds a peptide explaining a given spectrum.
Reconstruct a peptide from its ideal spectrum.
Given: A space-delimited list of integers, Spectrum.
Return: An amino acid string with an ideal spectrum that matches Spectrum.
Note: In this chapter, all dataset problems implicitly use the standard integer-valued mass table for the regular twenty amino acids. Examples sometimes use imaginary amino acids X and Z having respective integer masses 4 and 5.
57 71 154 185 301 332 415 429 486
GPFNA
