Problems

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Last win: CAI vs. “Rabbits and Recurrence Relations”, 16 minutes ago
Problems: 285 (total), users: 76428, attempts: 1258505, correct: 697923
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 533
BA10B Compute the Probability of an Outcome Given a Hidden Path 448
BA10C Implement the Viterbi Algorithm 268
BA10D Compute the Probability of a String Emitted by an HMM 229
BA10E Construct a Profile HMM 141
BA10F Construct a Profile HMM with Pseudocounts 131
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 74
BA10H Estimate the Parameters of an HMM 100
BA10I Implement Viterbi Learning 85
BA10J Solve the Soft Decoding Problem 92
BA10K Implement Baum-Welch Learning 73
BA11A Construct the Graph of a Spectrum 126
BA11B Implement DecodingIdealSpectrum 94
BA11C Convert a Peptide into a Peptide Vector 130
BA11D Convert a Peptide Vector into a Peptide 125
BA11E Sequence a Peptide 75
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 74
BA11G Implement PSMSearch 72
BA11H Compute the Size of a Spectral Dictionary 64
BA11I Compute the Probability of a Spectral Dictionary 63
BA11J Find a Highest-Scoring Modified Peptide against a Spectrum 47
BA1A Compute the Number of Times a Pattern Appears in a Text 1330
BA1B Find the Most Frequent Words in a String 1496
BA1C Find the Reverse Complement of a String 1449
BA1D Find All Occurrences of a Pattern in a String 1341
BA1E Find Patterns Forming Clumps in a String 1060
BA1F Find a Position in a Genome Minimizing the Skew 1072
BA1G Compute the Hamming Distance Between Two Strings 1127
BA1H Find All Approximate Occurrences of a Pattern in a String 937
BA1I Find the Most Frequent Words with Mismatches in a String 766
BA1J Find Frequent Words with Mismatches and Reverse Complements 701
BA1K Generate the Frequency Array of a String 649
BA1L Implement PatternToNumber 703
BA1M Implement NumberToPattern 669
BA1N Generate the d-Neighborhood of a String 680
BA2A Implement MotifEnumeration 566
BA2B Find a Median String 573
BA2C Find a Profile-most Probable k-mer in a String 582
BA2D Implement GreedyMotifSearch 487
BA2E Implement GreedyMotifSearch with Pseudocounts 425
BA2F Implement RandomizedMotifSearch 348
BA2G Implement GibbsSampler 300
BA2H Implement DistanceBetweenPatternAndStrings 390
BA3A Generate the k-mer Composition of a String 701
BA3B Reconstruct a String from its Genome Path 626
BA3C Construct the Overlap Graph of a Collection of k-mers 586
BA3D Construct the De Bruijn Graph of a String 612
BA3E Construct the De Bruijn Graph of a Collection of k-mers 539
BA3F Find an Eulerian Cycle in a Graph 409
BA3G Find an Eulerian Path in a Graph 347
BA3H Reconstruct a String from its k-mer Composition 370
BA3I Find a k-Universal Circular String 272
BA3J Reconstruct a String from its Paired Composition 234
BA3K Generate Contigs from a Collection of Reads 236
BA3L Construct a String Spelled by a Gapped Genome Path 196
BA3M Generate All Maximal Non-Branching Paths in a Graph 184
BA4A Translate an RNA String into an Amino Acid String 462
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 372
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 358
BA4D Compute the Number of Peptides of Given Total Mass 235
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 267
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 218
BA4G Implement LeaderboardCyclopeptideSequencing 204
BA4H Generate the Convolution of a Spectrum 208
BA4I Implement ConvolutionCyclopeptideSequencing 145
BA4J Generate the Theoretical Spectrum of a Linear Peptide 227
BA4K Compute the Score of a Linear Peptide 178
BA4L Trim a Peptide Leaderboard 159
BA4M Solve the Turnpike Problem 87
BA5A Find the Minimum Number of Coins Needed to Make Change 555
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 445
BA5C Find a Longest Common Subsequence of Two Strings 553
BA5D Find the Longest Path in a DAG 358
BA5E Find a Highest-Scoring Alignment of Two Strings 530
BA5F Find a Highest-Scoring Local Alignment of Two Strings 420
BA5G Compute the Edit Distance Between Two Strings 479
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 305
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 271
BA5J Align Two Strings Using Affine Gap Penalties 314
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 195
BA5L Align Two Strings Using Linear Space 174
BA5M Find a Highest-Scoring Multiple Sequence Alignment 206
BA5N Find a Topological Ordering of a DAG 143
BA6A Implement GreedySorting to Sort a Permutation by Reversals 324
BA6B Compute the Number of Breakpoints in a Permutation 357
BA6C Compute the 2-Break Distance Between a Pair of Genomes 238
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 83
BA6E Find All Shared k-mers of a Pair of Strings 219
BA6F Implement ChromosomeToCycle 139
BA6G Implement CycleToChromosome 134
BA6H Implement ColoredEdges 122
BA6I Implement GraphToGenome 100
BA6J Implement 2-BreakOnGenomeGraph 98
BA6K Implement 2-BreakOnGenome 94
BA7A Compute Distances Between Leaves 183
BA7B Compute Limb Lengths in a Tree 190
BA7C Implement AdditivePhylogeny 153
BA7D Implement UPGMA 141
BA7E Implement the Neighbor Joining Algorithm 118
BA7F Implement SmallParsimony 94
BA7G Adapt SmallParsimony to Unrooted Trees 63
BA8A Implement FarthestFirstTraversal 129
BA8B Compute the Squared Error Distortion 122
BA8C Implement the Lloyd Algorithm for k-Means Clustering 135
BA8D Implement the Soft k-Means Clustering Algorithm 103
BA8E Implement Hierarchical Clustering 101
BA9A Construct a Trie from a Collection of Patterns 272
BA9B Implement TrieMatching 244
BA9C Construct the Suffix Tree of a String 184
BA9D Find the Longest Repeat in a String 214
BA9E Find the Longest Substring Shared by Two Strings 195
BA9F Find the Shortest Non-Shared Substring of Two Strings 162
BA9G Construct the Suffix Array of a String 233
BA9H Pattern Matching with the Suffix Array 130
BA9I Construct the Burrows-Wheeler Transform of a String 279
BA9J Reconstruct a String from its Burrows-Wheeler Transform 223
BA9K Generate the Last-to-First Mapping of a String 155
BA9L Implement BWMatching 172
BA9M Implement BetterBWMatching 158
BA9N Find All Occurrences of a Collection of Patterns in a String 165
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 134
BA9P Implement TreeColoring 67
BA9Q Construct the Partial Suffix Array of a String 131
BA9R Construct a Suffix Tree from a Suffix Array 96