Problems

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Last win: billstam12 vs. “Counting Point Mutations”, 4 minutes ago
Problems: 285 (total), users: 59822, attempts: 998470, correct: 559111
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 414
BA10B Compute the Probability of an Outcome Given a Hidden Path 352
BA10C Implement the Viterbi Algorithm 214
BA10D Compute the Probability of a String Emitted by an HMM 187
BA10E Construct a Profile HMM 120
BA10F Construct a Profile HMM with Pseudocounts 111
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 56
BA10H Estimate the Parameters of an HMM 73
BA10I Implement Viterbi Learning 65
BA10J Solve the Soft Decoding Problem 64
BA10K Implement Baum-Welch Learning 52
BA11A Construct the Graph of a Spectrum 99
BA11B Implement DecodingIdealSpectrum 71
BA11C Convert a Peptide into a Peptide Vector 104
BA11D Convert a Peptide Vector into a Peptide 98
BA11E Sequence a Peptide 58
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 59
BA11G Implement PSMSearch 58
BA11H Compute the Size of a Spectral Dictionary 49
BA11I Compute the Probability of a Spectral Dictionary 49
BA11J Find a Highest-Scoring Modified Peptide against a Spectrum 38
BA1A Compute the Number of Times a Pattern Appears in a Text 880
BA1B Find the Most Frequent Words in a String 1048
BA1C Find the Reverse Complement of a String 996
BA1D Find All Occurrences of a Pattern in a String 909
BA1E Find Patterns Forming Clumps in a String 697
BA1F Find a Position in a Genome Minimizing the Skew 687
BA1G Compute the Hamming Distance Between Two Strings 760
BA1H Find All Approximate Occurrences of a Pattern in a String 656
BA1I Find the Most Frequent Words with Mismatches in a String 524
BA1J Find Frequent Words with Mismatches and Reverse Complements 469
BA1K Generate the Frequency Array of a String 439
BA1L Implement PatternToNumber 494
BA1M Implement NumberToPattern 455
BA1N Generate the d-Neighborhood of a String 479
BA2A Implement MotifEnumeration 393
BA2B Find a Median String 385
BA2C Find a Profile-most Probable k-mer in a String 404
BA2D Implement GreedyMotifSearch 333
BA2E Implement GreedyMotifSearch with Pseudocounts 283
BA2F Implement RandomizedMotifSearch 230
BA2G Implement GibbsSampler 208
BA2H Implement DistanceBetweenPatternAndStrings 263
BA3A Generate the k-mer Composition of a String 488
BA3B Reconstruct a String from its Genome Path 449
BA3C Construct the Overlap Graph of a Collection of k-mers 394
BA3D Construct the De Bruijn Graph of a String 407
BA3E Construct the De Bruijn Graph of a Collection of k-mers 383
BA3F Find an Eulerian Cycle in a Graph 281
BA3G Find an Eulerian Path in a Graph 236
BA3H Reconstruct a String from its k-mer Composition 228
BA3I Find a k-Universal Circular String 171
BA3J Reconstruct a String from its Paired Composition 163
BA3K Generate Contigs from a Collection of Reads 167
BA3L Construct a String Spelled by a Gapped Genome Path 138
BA3M Generate All Maximal Non-Branching Paths in a Graph 115
BA4A Translate an RNA String into an Amino Acid String 341
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 249
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 245
BA4D Compute the Number of Peptides of Given Total Mass 133
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 171
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 141
BA4G Implement LeaderboardCyclopeptideSequencing 132
BA4H Generate the Convolution of a Spectrum 132
BA4I Implement ConvolutionCyclopeptideSequencing 99
BA4J Generate the Theoretical Spectrum of a Linear Peptide 151
BA4K Compute the Score of a Linear Peptide 116
BA4L Trim a Peptide Leaderboard 100
BA4M Solve the Turnpike Problem 68
BA5A Find the Minimum Number of Coins Needed to Make Change 455
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 366
BA5C Find a Longest Common Subsequence of Two Strings 450
BA5D Find the Longest Path in a DAG 300
BA5E Find a Highest-Scoring Alignment of Two Strings 404
BA5F Find a Highest-Scoring Local Alignment of Two Strings 332
BA5G Compute the Edit Distance Between Two Strings 406
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 253
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 232
BA5J Align Two Strings Using Affine Gap Penalties 249
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 164
BA5L Align Two Strings Using Linear Space 144
BA5M Find a Highest-Scoring Multiple Sequence Alignment 167
BA5N Find a Topological Ordering of a DAG 108
BA6A Implement GreedySorting to Sort a Permutation by Reversals 267
BA6B Compute the Number of Breakpoints in a Permutation 291
BA6C Compute the 2-Break Distance Between a Pair of Genomes 191
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 55
BA6E Find All Shared k-mers of a Pair of Strings 197
BA6F Implement ChromosomeToCycle 114
BA6G Implement CycleToChromosome 109
BA6H Implement ColoredEdges 99
BA6I Implement GraphToGenome 81
BA6J Implement 2-BreakOnGenomeGraph 74
BA6K Implement 2-BreakOnGenome 64
BA7A Compute Distances Between Leaves 128
BA7B Compute Limb Lengths in a Tree 137
BA7C Implement AdditivePhylogeny 92
BA7D Implement UPGMA 88
BA7E Implement the Neighbor Joining Algorithm 75
BA7F Implement SmallParsimony 67
BA7G Adapt SmallParsimony to Unrooted Trees 43
BA8A Implement FarthestFirstTraversal 98
BA8B Compute the Squared Error Distortion 94
BA8C Implement the Lloyd Algorithm for k-Means Clustering 100
BA8D Implement the Soft k-Means Clustering Algorithm 81
BA8E Implement Hierarchical Clustering 77
BA9A Construct a Trie from a Collection of Patterns 229
BA9B Implement TrieMatching 202
BA9C Construct the Suffix Tree of a String 159
BA9D Find the Longest Repeat in a String 185
BA9E Find the Longest Substring Shared by Two Strings 175
BA9F Find the Shortest Non-Shared Substring of Two Strings 140
BA9G Construct the Suffix Array of a String 185
BA9H Pattern Matching with the Suffix Array 99
BA9I Construct the Burrows-Wheeler Transform of a String 217
BA9J Reconstruct a String from its Burrows-Wheeler Transform 179
BA9K Generate the Last-to-First Mapping of a String 108
BA9L Implement BWMatching 139
BA9M Implement BetterBWMatching 126
BA9N Find All Occurrences of a Collection of Patterns in a String 140
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 111
BA9P Implement TreeColoring 54
BA9Q Construct the Partial Suffix Array of a String 113
BA9R Construct a Suffix Tree from a Suffix Array 84