Problems

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Last win: Fahad vs. “Mendel's First Law”, 6 minutes ago
Problems: 285 (total), users: 49121, attempts: 825553, correct: 465417
ID Title Solved By Correct Ratio
BA10A Compute the Probability of a Hidden Path 291
BA10B Compute the Probability of an Outcome Given a Hidden Path 244
BA10C Implement the Viterbi Algorithm 151
BA10D Compute the Probability of a String Emitted by an HMM 136
BA10E Construct a Profile HMM 89
BA10F Construct a Profile HMM with Pseudocounts 79
BA10G Perform a Multiple Sequence Alignment with a Profile HMM 37
BA10H Estimate the Parameters of an HMM 55
BA10I Implement Viterbi Learning 44
BA10J Solve the Soft Decoding Problem 45
BA10K Implement Baum-Welch Learning 32
BA11A Construct the Graph of a Spectrum 78
BA11B Implement DecodingIdealSpectrum 56
BA11C Convert a Peptide into a Peptide Vector 83
BA11D Convert a Peptide Vector into a Peptide 77
BA11E Sequence a Peptide 45
BA11F Find a Highest-Scoring Peptide in a Proteome against a Spectrum 47
BA11G Implement PSMSearch 45
BA11H Compute the Size of a Spectral Dictionary 38
BA11I Compute the Probability of a Spectral Dictionary 37
BA11J Find a Highest-Scoring Modified Peptide against a Spectrum 29
BA1A Compute the Number of Times a Pattern Appears in a Text 627
BA1B Find the Most Frequent Words in a String 789
BA1C Find the Reverse Complement of a String 718
BA1D Find All Occurrences of a Pattern in a String 679
BA1E Find Patterns Forming Clumps in a String 526
BA1F Find a Position in a Genome Minimizing the Skew 519
BA1G Compute the Hamming Distance Between Two Strings 525
BA1H Find All Approximate Occurrences of a Pattern in a String 510
BA1I Find the Most Frequent Words with Mismatches in a String 404
BA1J Find Frequent Words with Mismatches and Reverse Complements 363
BA1K Generate the Frequency Array of a String 323
BA1L Implement PatternToNumber 363
BA1M Implement NumberToPattern 330
BA1N Generate the d-Neighborhood of a String 352
BA2A Implement MotifEnumeration 312
BA2B Find a Median String 278
BA2C Find a Profile-most Probable k-mer in a String 299
BA2D Implement GreedyMotifSearch 234
BA2E Implement GreedyMotifSearch with Pseudocounts 198
BA2F Implement RandomizedMotifSearch 161
BA2G Implement GibbsSampler 148
BA2H Implement DistanceBetweenPatternAndStrings 196
BA3A Generate the k-mer Composition of a String 327
BA3B Reconstruct a String from its Genome Path 265
BA3C Construct the Overlap Graph of a Collection of k-mers 274
BA3D Construct the De Bruijn Graph of a String 265
BA3E Construct the De Bruijn Graph of a Collection of k-mers 249
BA3F Find an Eulerian Cycle in a Graph 185
BA3G Find an Eulerian Path in a Graph 167
BA3H Reconstruct a String from its k-mer Composition 163
BA3I Find a k-Universal Circular String 131
BA3J Reconstruct a String from its Paired Composition 103
BA3K Generate Contigs from a Collection of Reads 115
BA3L Construct a String Spelled by a Gapped Genome Path 96
BA3M Generate All Maximal Non-Branching Paths in a Graph 93
BA4A Translate an RNA String into an Amino Acid String 232
BA4B Find Substrings of a Genome Encoding a Given Amino Acid String 177
BA4C Generate the Theoretical Spectrum of a Cyclic Peptide 179
BA4D Compute the Number of Peptides of Given Total Mass 98
BA4E Find a Cyclic Peptide with Theoretical Spectrum Matching an Ideal Spectrum 125
BA4F Compute the Score of a Cyclic Peptide Against a Spectrum 103
BA4G Implement LeaderboardCyclopeptideSequencing 102
BA4H Generate the Convolution of a Spectrum 102
BA4I Implement ConvolutionCyclopeptideSequencing 71
BA4J Generate the Theoretical Spectrum of a Linear Peptide 106
BA4K Compute the Score of a Linear Peptide 89
BA4L Trim a Peptide Leaderboard 78
BA4M Solve the Turnpike Problem 50
BA5A Find the Minimum Number of Coins Needed to Make Change 398
BA5B Find the Length of a Longest Path in a Manhattan-like Grid 328
BA5C Find a Longest Common Subsequence of Two Strings 386
BA5D Find the Longest Path in a DAG 265
BA5E Find a Highest-Scoring Alignment of Two Strings 309
BA5F Find a Highest-Scoring Local Alignment of Two Strings 271
BA5G Compute the Edit Distance Between Two Strings 324
BA5H Find a Highest-Scoring Fitting Alignment of Two Strings 224
BA5I Find a Highest-Scoring Overlap Alignment of Two Strings 206
BA5J Align Two Strings Using Affine Gap Penalties 193
BA5K Find a Middle Edge in an Alignment Graph in Linear Space 126
BA5L Align Two Strings Using Linear Space 108
BA5M Find a Highest-Scoring Multiple Sequence Alignment 131
BA5N Find a Topological Ordering of a DAG 82
BA6A Implement GreedySorting to Sort a Permutation by Reversals 236
BA6B Compute the Number of Breakpoints in a Permutation 255
BA6C Compute the 2-Break Distance Between a Pair of Genomes 165
BA6D Find a Shortest Transformation of One Genome into Another by 2-Breaks 39
BA6E Find All Shared k-mers of a Pair of Strings 174
BA6F Implement ChromosomeToCycle 94
BA6G Implement CycleToChromosome 89
BA6H Implement ColoredEdges 81
BA6I Implement GraphToGenome 65
BA6J Implement 2-BreakOnGenomeGraph 59
BA6K Implement 2-BreakOnGenome 44
BA7A Compute Distances Between Leaves 104
BA7B Compute Limb Lengths in a Tree 95
BA7C Implement AdditivePhylogeny 63
BA7D Implement UPGMA 59
BA7E Implement the Neighbor Joining Algorithm 52
BA7F Implement SmallParsimony 45
BA7G Adapt SmallParsimony to Unrooted Trees 28
BA8A Implement FarthestFirstTraversal 79
BA8B Compute the Squared Error Distortion 76
BA8C Implement the Lloyd Algorithm for k-Means Clustering 69
BA8D Implement the Soft k-Means Clustering Algorithm 64
BA8E Implement Hierarchical Clustering 63
BA9A Construct a Trie from a Collection of Patterns 198
BA9B Implement TrieMatching 177
BA9C Construct the Suffix Tree of a String 139
BA9D Find the Longest Repeat in a String 163
BA9E Find the Longest Substring Shared by Two Strings 153
BA9F Find the Shortest Non-Shared Substring of Two Strings 122
BA9G Construct the Suffix Array of a String 159
BA9H Pattern Matching with the Suffix Array 79
BA9I Construct the Burrows-Wheeler Transform of a String 183
BA9J Reconstruct a String from its Burrows-Wheeler Transform 152
BA9K Generate the Last-to-First Mapping of a String 82
BA9L Implement BWMatching 116
BA9M Implement BetterBWMatching 108
BA9N Find All Occurrences of a Collection of Patterns in a String 122
BA9O Find All Approximate Occurrences of a Collection of Patterns in a String 92
BA9P Implement TreeColoring 41
BA9Q Construct the Partial Suffix Array of a String 96
BA9R Construct a Suffix Tree from a Suffix Array 70