Problems

Rosalind is a platform for learning bioinformatics and programming through problem solving. Take a tour to get the hang of how Rosalind works.

Last win: bhanson10 vs. “Conditions and Loops”, 4 minutes ago
Problems: 285 (total), users: 67262, attempts: 1109873, correct: 618188
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 464
BA10B Compute the Probability of an Outcome Given a Hidden Path 389
BA10C Implement the Viterbi Algorithm 245
BA10D Compute the Probability of a String Emitted by an HMM 209
BA10E Construct a Profile HMM 132
BA10F Construct a Profile HMM with Pseudocounts 121
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 66
BA10H Estimate the Parameters of an HMM 87
BA10I Implement Viterbi Learning 77
BA10J Solve the Soft Decoding Problem 80
BA10K Implement Baum-Welch Learning 63
BA11A Construct the Graph of a Spectrum 113
BA11B Implement DecodingIdealSpectrum 86
BA11C Convert a Peptide into a Peptide Vector 118
BA11D Convert a Peptide Vector into a Peptide 113
BA11E Sequence a Peptide 68
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 68
BA11G Implement PSMSearch 67
BA11H Compute the Size of a Spectral Dictionary 56
BA11I Compute the Probability of a Spectral Dictionary 56
BA11J Find a Highest-Scoring Modified Peptide against a Spectrum 45
BA1A Compute the Number of Times a Pattern Appears in a Text 1037
BA1B Find the Most Frequent Words in a String 1221
BA1C Find the Reverse Complement of a String 1170
BA1D Find All Occurrences of a Pattern in a String 1080
BA1E Find Patterns Forming Clumps in a String 836
BA1F Find a Position in a Genome Minimizing the Skew 831
BA1G Compute the Hamming Distance Between Two Strings 881
BA1H Find All Approximate Occurrences of a Pattern in a String 765
BA1I Find the Most Frequent Words with Mismatches in a String 626
BA1J Find Frequent Words with Mismatches and Reverse Complements 563
BA1K Generate the Frequency Array of a String 508
BA1L Implement PatternToNumber 570
BA1M Implement NumberToPattern 528
BA1N Generate the d-Neighborhood of a String 554
BA2A Implement MotifEnumeration 457
BA2B Find a Median String 458
BA2C Find a Profile-most Probable k-mer in a String 479
BA2D Implement GreedyMotifSearch 394
BA2E Implement GreedyMotifSearch with Pseudocounts 339
BA2F Implement RandomizedMotifSearch 274
BA2G Implement GibbsSampler 246
BA2H Implement DistanceBetweenPatternAndStrings 314
BA3A Generate the k-mer Composition of a String 582
BA3B Reconstruct a String from its Genome Path 513
BA3C Construct the Overlap Graph of a Collection of k-mers 484
BA3D Construct the De Bruijn Graph of a String 484
BA3E Construct the De Bruijn Graph of a Collection of k-mers 441
BA3F Find an Eulerian Cycle in a Graph 333
BA3G Find an Eulerian Path in a Graph 276
BA3H Reconstruct a String from its k-mer Composition 278
BA3I Find a k-Universal Circular String 220
BA3J Reconstruct a String from its Paired Composition 196
BA3K Generate Contigs from a Collection of Reads 196
BA3L Construct a String Spelled by a Gapped Genome Path 162
BA3M Generate All Maximal Non-Branching Paths in a Graph 143
BA4A Translate an RNA String into an Amino Acid String 377
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 290
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 280
BA4D Compute the Number of Peptides of Given Total Mass 175
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 213
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 172
BA4G Implement LeaderboardCyclopeptideSequencing 163
BA4H Generate the Convolution of a Spectrum 166
BA4I Implement ConvolutionCyclopeptideSequencing 122
BA4J Generate the Theoretical Spectrum of a Linear Peptide 187
BA4K Compute the Score of a Linear Peptide 146
BA4L Trim a Peptide Leaderboard 130
BA4M Solve the Turnpike Problem 77
BA5A Find the Minimum Number of Coins Needed to Make Change 494
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 404
BA5C Find a Longest Common Subsequence of Two Strings 497
BA5D Find the Longest Path in a DAG 330
BA5E Find a Highest-Scoring Alignment of Two Strings 464
BA5F Find a Highest-Scoring Local Alignment of Two Strings 378
BA5G Compute the Edit Distance Between Two Strings 449
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 275
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 252
BA5J Align Two Strings Using Affine Gap Penalties 283
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 182
BA5L Align Two Strings Using Linear Space 162
BA5M Find a Highest-Scoring Multiple Sequence Alignment 182
BA5N Find a Topological Ordering of a DAG 127
BA6A Implement GreedySorting to Sort a Permutation by Reversals 287
BA6B Compute the Number of Breakpoints in a Permutation 315
BA6C Compute the 2-Break Distance Between a Pair of Genomes 208
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 66
BA6E Find All Shared k-mers of a Pair of Strings 211
BA6F Implement ChromosomeToCycle 126
BA6G Implement CycleToChromosome 122
BA6H Implement ColoredEdges 112
BA6I Implement GraphToGenome 92
BA6J Implement 2-BreakOnGenomeGraph 86
BA6K Implement 2-BreakOnGenome 78
BA7A Compute Distances Between Leaves 143
BA7B Compute Limb Lengths in a Tree 153
BA7C Implement AdditivePhylogeny 108
BA7D Implement UPGMA 106
BA7E Implement the Neighbor Joining Algorithm 89
BA7F Implement SmallParsimony 80
BA7G Adapt SmallParsimony to Unrooted Trees 49
BA8A Implement FarthestFirstTraversal 115
BA8B Compute the Squared Error Distortion 108
BA8C Implement the Lloyd Algorithm for k-Means Clustering 120
BA8D Implement the Soft k-Means Clustering Algorithm 96
BA8E Implement Hierarchical Clustering 92
BA9A Construct a Trie from a Collection of Patterns 244
BA9B Implement TrieMatching 218
BA9C Construct the Suffix Tree of a String 170
BA9D Find the Longest Repeat in a String 201
BA9E Find the Longest Substring Shared by Two Strings 185
BA9F Find the Shortest Non-Shared Substring of Two Strings 150
BA9G Construct the Suffix Array of a String 204
BA9H Pattern Matching with the Suffix Array 112
BA9I Construct the Burrows-Wheeler Transform of a String 242
BA9J Reconstruct a String from its Burrows-Wheeler Transform 199
BA9K Generate the Last-to-First Mapping of a String 129
BA9L Implement BWMatching 157
BA9M Implement BetterBWMatching 141
BA9N Find All Occurrences of a Collection of Patterns in a String 153
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 120
BA9P Implement TreeColoring 62
BA9Q Construct the Partial Suffix Array of a String 121
BA9R Construct a Suffix Tree from a Suffix Array 92