Problems

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Last win: 91wuwu vs. “Degree Array”, 37 minutes ago
Problems: 285 (total), users: 46026, attempts: 781782, correct: 441513
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 275
BA10B Compute the Probability of an Outcome Given a Hidden Path 233
BA10C Implement the Viterbi Algorithm 148
BA10D Compute the Probability of a String Emitted by an HMM 133
BA10E Construct a Profile HMM 86
BA10F Construct a Profile HMM with Pseudocounts 76
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 35
BA10H Estimate the Parameters of an HMM 53
BA10I Implement Viterbi Learning 42
BA10J Solve the Soft Decoding Problem 44
BA10K Implement Baum-Welch Learning 31
BA11A Construct the Graph of a Spectrum 72
BA11B Implement DecodingIdealSpectrum 52
BA11C Convert a Peptide into a Peptide Vector 77
BA11D Convert a Peptide Vector into a Peptide 71
BA11E Sequence a Peptide 43
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 45
BA11G Implement PSMSearch 43
BA11H Compute the Size of a Spectral Dictionary 36
BA11I Compute the Probability of a Spectral Dictionary 35
BA11J Find a Highest-Scoring Modified Peptide against a Spectrum 26
BA1A Compute the Number of Times a Pattern Appears in a Text 541
BA1B Find the Most Frequent Words in a String 725
BA1C Find the Reverse Complement of a String 652
BA1D Find All Occurrences of a Pattern in a String 614
BA1E Find Patterns Forming Clumps in a String 490
BA1F Find a Position in a Genome Minimizing the Skew 472
BA1G Compute the Hamming Distance Between Two Strings 461
BA1H Find All Approximate Occurrences of a Pattern in a String 471
BA1I Find the Most Frequent Words with Mismatches in a String 376
BA1J Find Frequent Words with Mismatches and Reverse Complements 337
BA1K Generate the Frequency Array of a String 298
BA1L Implement PatternToNumber 335
BA1M Implement NumberToPattern 304
BA1N Generate the d-Neighborhood of a String 329
BA2A Implement MotifEnumeration 282
BA2B Find a Median String 244
BA2C Find a Profile-most Probable k-mer in a String 264
BA2D Implement GreedyMotifSearch 215
BA2E Implement GreedyMotifSearch with Pseudocounts 183
BA2F Implement RandomizedMotifSearch 150
BA2G Implement GibbsSampler 139
BA2H Implement DistanceBetweenPatternAndStrings 173
BA3A Generate the k-mer Composition of a String 300
BA3B Reconstruct a String from its Genome Path 242
BA3C Construct the Overlap Graph of a Collection of k-mers 261
BA3D Construct the De Bruijn Graph of a String 249
BA3E Construct the De Bruijn Graph of a Collection of k-mers 232
BA3F Find an Eulerian Cycle in a Graph 176
BA3G Find an Eulerian Path in a Graph 162
BA3H Reconstruct a String from its k-mer Composition 153
BA3I Find a k-Universal Circular String 122
BA3J Reconstruct a String from its Paired Composition 96
BA3K Generate Contigs from a Collection of Reads 107
BA3L Construct a String Spelled by a Gapped Genome Path 88
BA3M Generate All Maximal Non-Branching Paths in a Graph 88
BA4A Translate an RNA String into an Amino Acid String 214
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 167
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 170
BA4D Compute the Number of Peptides of Given Total Mass 87
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 117
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 97
BA4G Implement LeaderboardCyclopeptideSequencing 97
BA4H Generate the Convolution of a Spectrum 98
BA4I Implement ConvolutionCyclopeptideSequencing 68
BA4J Generate the Theoretical Spectrum of a Linear Peptide 100
BA4K Compute the Score of a Linear Peptide 84
BA4L Trim a Peptide Leaderboard 74
BA4M Solve the Turnpike Problem 46
BA5A Find the Minimum Number of Coins Needed to Make Change 376
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 313
BA5C Find a Longest Common Subsequence of Two Strings 378
BA5D Find the Longest Path in a DAG 259
BA5E Find a Highest-Scoring Alignment of Two Strings 300
BA5F Find a Highest-Scoring Local Alignment of Two Strings 263
BA5G Compute the Edit Distance Between Two Strings 318
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 221
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 204
BA5J Align Two Strings Using Affine Gap Penalties 190
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 124
BA5L Align Two Strings Using Linear Space 106
BA5M Find a Highest-Scoring Multiple Sequence Alignment 128
BA5N Find a Topological Ordering of a DAG 78
BA6A Implement GreedySorting to Sort a Permutation by Reversals 229
BA6B Compute the Number of Breakpoints in a Permutation 246
BA6C Compute the 2-Break Distance Between a Pair of Genomes 160
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 34
BA6E Find All Shared k-mers of a Pair of Strings 170
BA6F Implement ChromosomeToCycle 89
BA6G Implement CycleToChromosome 84
BA6H Implement ColoredEdges 78
BA6I Implement GraphToGenome 62
BA6J Implement 2-BreakOnGenomeGraph 58
BA6K Implement 2-BreakOnGenome 41
BA7A Compute Distances Between Leaves 99
BA7B Compute Limb Lengths in a Tree 90
BA7C Implement AdditivePhylogeny 61
BA7D Implement UPGMA 56
BA7E Implement the Neighbor Joining Algorithm 50
BA7F Implement SmallParsimony 42
BA7G Adapt SmallParsimony to Unrooted Trees 26
BA8A Implement FarthestFirstTraversal 75
BA8B Compute the Squared Error Distortion 73
BA8C Implement the Lloyd Algorithm for k-Means Clustering 65
BA8D Implement the Soft k-Means Clustering Algorithm 61
BA8E Implement Hierarchical Clustering 58
BA9A Construct a Trie from a Collection of Patterns 194
BA9B Implement TrieMatching 172
BA9C Construct the Suffix Tree of a String 133
BA9D Find the Longest Repeat in a String 158
BA9E Find the Longest Substring Shared by Two Strings 151
BA9F Find the Shortest Non-Shared Substring of Two Strings 119
BA9G Construct the Suffix Array of a String 151
BA9H Pattern Matching with the Suffix Array 73
BA9I Construct the Burrows-Wheeler Transform of a String 175
BA9J Reconstruct a String from its Burrows-Wheeler Transform 145
BA9K Generate the Last-to-First Mapping of a String 76
BA9L Implement BWMatching 112
BA9M Implement BetterBWMatching 106
BA9N Find All Occurrences of a Collection of Patterns in a String 118
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 89
BA9P Implement TreeColoring 38
BA9Q Construct the Partial Suffix Array of a String 94
BA9R Construct a Suffix Tree from a Suffix Array 67