Problems

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Last win: vinaykbansal vs. “Conditions and Loops”, 10 minutes ago
Problems: 285 (total), users: 69613, attempts: 1145654, correct: 637379
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 484
BA10B Compute the Probability of an Outcome Given a Hidden Path 408
BA10C Implement the Viterbi Algorithm 253
BA10D Compute the Probability of a String Emitted by an HMM 217
BA10E Construct a Profile HMM 134
BA10F Construct a Profile HMM with Pseudocounts 123
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 68
BA10H Estimate the Parameters of an HMM 91
BA10I Implement Viterbi Learning 79
BA10J Solve the Soft Decoding Problem 85
BA10K Implement Baum-Welch Learning 67
BA11A Construct the Graph of a Spectrum 114
BA11B Implement DecodingIdealSpectrum 87
BA11C Convert a Peptide into a Peptide Vector 119
BA11D Convert a Peptide Vector into a Peptide 114
BA11E Sequence a Peptide 70
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 69
BA11G Implement PSMSearch 67
BA11H Compute the Size of a Spectral Dictionary 57
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 1135
BA1B Find the Most Frequent Words in a String 1307
BA1C Find the Reverse Complement of a String 1268
BA1D Find All Occurrences of a Pattern in a String 1174
BA1E Find Patterns Forming Clumps in a String 906
BA1F Find a Position in a Genome Minimizing the Skew 918
BA1G Compute the Hamming Distance Between Two Strings 961
BA1H Find All Approximate Occurrences of a Pattern in a String 843
BA1I Find the Most Frequent Words with Mismatches in a String 689
BA1J Find Frequent Words with Mismatches and Reverse Complements 627
BA1K Generate the Frequency Array of a String 585
BA1L Implement PatternToNumber 633
BA1M Implement NumberToPattern 600
BA1N Generate the d-Neighborhood of a String 614
BA2A Implement MotifEnumeration 504
BA2B Find a Median String 515
BA2C Find a Profile-most Probable k-mer in a String 531
BA2D Implement GreedyMotifSearch 442
BA2E Implement GreedyMotifSearch with Pseudocounts 383
BA2F Implement RandomizedMotifSearch 305
BA2G Implement GibbsSampler 265
BA2H Implement DistanceBetweenPatternAndStrings 350
BA3A Generate the k-mer Composition of a String 636
BA3B Reconstruct a String from its Genome Path 568
BA3C Construct the Overlap Graph of a Collection of k-mers 523
BA3D Construct the De Bruijn Graph of a String 533
BA3E Construct the De Bruijn Graph of a Collection of k-mers 478
BA3F Find an Eulerian Cycle in a Graph 368
BA3G Find an Eulerian Path in a Graph 310
BA3H Reconstruct a String from its k-mer Composition 313
BA3I Find a k-Universal Circular String 234
BA3J Reconstruct a String from its Paired Composition 207
BA3K Generate Contigs from a Collection of Reads 202
BA3L Construct a String Spelled by a Gapped Genome Path 171
BA3M Generate All Maximal Non-Branching Paths in a Graph 151
BA4A Translate an RNA String into an Amino Acid String 430
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 337
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 330
BA4D Compute the Number of Peptides of Given Total Mass 210
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 243
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 200
BA4G Implement LeaderboardCyclopeptideSequencing 180
BA4H Generate the Convolution of a Spectrum 190
BA4I Implement ConvolutionCyclopeptideSequencing 132
BA4J Generate the Theoretical Spectrum of a Linear Peptide 207
BA4K Compute the Score of a Linear Peptide 163
BA4L Trim a Peptide Leaderboard 147
BA4M Solve the Turnpike Problem 80
BA5A Find the Minimum Number of Coins Needed to Make Change 522
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 417
BA5C Find a Longest Common Subsequence of Two Strings 510
BA5D Find the Longest Path in a DAG 337
BA5E Find a Highest-Scoring Alignment of Two Strings 487
BA5F Find a Highest-Scoring Local Alignment of Two Strings 399
BA5G Compute the Edit Distance Between Two Strings 459
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 290
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 260
BA5J Align Two Strings Using Affine Gap Penalties 288
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 186
BA5L Align Two Strings Using Linear Space 164
BA5M Find a Highest-Scoring Multiple Sequence Alignment 183
BA5N Find a Topological Ordering of a DAG 129
BA6A Implement GreedySorting to Sort a Permutation by Reversals 295
BA6B Compute the Number of Breakpoints in a Permutation 323
BA6C Compute the 2-Break Distance Between a Pair of Genomes 210
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 68
BA6E Find All Shared k-mers of a Pair of Strings 211
BA6F Implement ChromosomeToCycle 127
BA6G Implement CycleToChromosome 123
BA6H Implement ColoredEdges 113
BA6I Implement GraphToGenome 93
BA6J Implement 2-BreakOnGenomeGraph 87
BA6K Implement 2-BreakOnGenome 81
BA7A Compute Distances Between Leaves 152
BA7B Compute Limb Lengths in a Tree 158
BA7C Implement AdditivePhylogeny 113
BA7D Implement UPGMA 111
BA7E Implement the Neighbor Joining Algorithm 93
BA7F Implement SmallParsimony 83
BA7G Adapt SmallParsimony to Unrooted Trees 52
BA8A Implement FarthestFirstTraversal 116
BA8B Compute the Squared Error Distortion 109
BA8C Implement the Lloyd Algorithm for k-Means Clustering 122
BA8D Implement the Soft k-Means Clustering Algorithm 98
BA8E Implement Hierarchical Clustering 94
BA9A Construct a Trie from a Collection of Patterns 260
BA9B Implement TrieMatching 234
BA9C Construct the Suffix Tree of a String 175
BA9D Find the Longest Repeat in a String 204
BA9E Find the Longest Substring Shared by Two Strings 187
BA9F Find the Shortest Non-Shared Substring of Two Strings 152
BA9G Construct the Suffix Array of a String 218
BA9H Pattern Matching with the Suffix Array 119
BA9I Construct the Burrows-Wheeler Transform of a String 264
BA9J Reconstruct a String from its Burrows-Wheeler Transform 212
BA9K Generate the Last-to-First Mapping of a String 141
BA9L Implement BWMatching 164
BA9M Implement BetterBWMatching 149
BA9N Find All Occurrences of a Collection of Patterns in a String 157
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 128
BA9P Implement TreeColoring 63
BA9Q Construct the Partial Suffix Array of a String 125
BA9R Construct a Suffix Tree from a Suffix Array 93