Rosalind is a platform for learning bioinformatics and programming through problem solving. Take a tour to get the hang of how Rosalind works.

Last win: Gosia Kurkiewicz vs. “Counting DNA Nucleotides”, 11 minutes ago
Problems: 285 (total), users: 69077, attempts: 1136059, correct: 632289
ID Title Solved By Correct Ratio
DNA Counting DNA Nucleotides 39713
RNA Transcribing DNA into RNA 35409
REVC Complementing a Strand of DNA 32048
FIB Rabbits and Recurrence Relations 18291
GC Computing GC Content 18638
HAMM Counting Point Mutations 21097
IPRB Mendel's First Law 12196
PROT Translating RNA into Protein 16409
SUBS Finding a Motif in DNA 16894
CONS Consensus and Profile 9316
FIBD Mortal Fibonacci Rabbits 7855
GRPH Overlap Graphs 7682
IEV Calculating Expected Offspring 7101
LCSM Finding a Shared Motif 6553
LIA Independent Alleles 3757
MPRT Finding a Protein Motif 4092
MRNA Inferring mRNA from Protein 6298
ORF Open Reading Frames 4883
PERM Enumerating Gene Orders 8608
PRTM Calculating Protein Mass 8088
REVP Locating Restriction Sites 5138
SPLC RNA Splicing 5728
LEXF Enumerating k-mers Lexicographically 4803
LGIS Longest Increasing Subsequence 2096
LONG Genome Assembly as Shortest Superstring 2405
PMCH Perfect Matchings and RNA Secondary Structures 2290
PPER Partial Permutations 3180
PROB Introduction to Random Strings 3121
SIGN Enumerating Oriented Gene Orderings 3183
SSEQ Finding a Spliced Motif 3456
TRAN Transitions and Transversions 3318
TREE Completing a Tree 2799
CAT Catalan Numbers and RNA Secondary Structures 951
CORR Error Correction in Reads 1534
INOD Counting Phylogenetic Ancestors 2067
KMER k-Mer Composition 2323
KMP Speeding Up Motif Finding 1843
LCSQ Finding a Shared Spliced Motif 1593
LEXV Ordering Strings of Varying Length Lexicographically 2587
MMCH Maximum Matchings and RNA Secondary Structures 1124
PDST Creating a Distance Matrix 1665
REAR Reversal Distance 804
RSTR Matching Random Motifs 1278
SSET Counting Subsets 1946
ASPC Introduction to Alternative Splicing 1223
EDIT Edit Distance 1174
EVAL Expected Number of Restriction Sites 956
MOTZ Motzkin Numbers and RNA Secondary Structures 601
NWCK Distances in Trees 754
SCSP Interleaving Two Motifs 725
SETO Introduction to Set Operations 1529
SORT Sorting by Reversals 619
SPEC Inferring Protein from Spectrum 1189
TRIE Introduction to Pattern Matching 929
CONV Comparing Spectra with the Spectral Convolution 758
CTBL Creating a Character Table 431
DBRU Constructing a De Bruijn Graph 783
EDTA Edit Distance Alignment 771
FULL Inferring Peptide from Full Spectrum 536
INDC Independent Segregation of Chromosomes 617
ITWV Finding Disjoint Motifs in a Gene 298
LREP Finding the Longest Multiple Repeat 424
NKEW Newick Format with Edge Weights 472
RNAS Wobble Bonding and RNA Secondary Structures 424
AFRQ Counting Disease Carriers 522
CSTR Creating a Character Table from Genetic Strings 280
CTEA Counting Optimal Alignments 296
CUNR Counting Unrooted Binary Trees 269
GLOB Global Alignment with Scoring Matrix 555
PCOV Genome Assembly with Perfect Coverage 560
PRSM Matching a Spectrum to a Protein 411
QRT Quartets 224
SGRA Using the Spectrum Graph to Infer Peptides 353
SUFF Encoding Suffix Trees 309
CHBP Character-Based Phylogeny 149
CNTQ Counting Quartets 159
EUBT Enumerating Unrooted Binary Trees 146
GASM Genome Assembly Using Reads 306
GCON Global Alignment with Constant Gap Penalty 354
LING Linguistic Complexity of a Genome 186
LOCA Local Alignment with Scoring Matrix 377
MEND Inferring Genotype from a Pedigree 242
MGAP Maximizing the Gap Symbols of an Optimal Alignment 198
MREP Identifying Maximal Repeats 167
MULT Multiple Alignment 203
PDPL Creating a Restriction Map 216
ROOT Counting Rooted Binary Trees 227
SEXL Sex-Linked Inheritance 403
SPTD Phylogeny Comparison with Split Distance 162
WFMD The Wright-Fisher Model of Genetic Drift 317
ALPH Alignment-Based Phylogeny 112
ASMQ Assessing Assembly Quality with N50 and N75 244
CSET Fixing an Inconsistent Character Set 124
EBIN Wright-Fisher's Expected Behavior 264
FOUN The Founder Effect and Genetic Drift 249
GAFF Global Alignment with Scoring Matrix and Affine Gap Penalty 294
GREP Genome Assembly with Perfect Coverage and Repeats 188
OAP Overlap Alignment 173
QRTD Quartet Distance 79
SIMS Finding a Motif with Modifications 205
SMGB Semiglobal Alignment 177
KSIM Finding All Similar Motifs 76
LAFF Local Alignment with Affine Gap Penalty 173
OSYM Isolating Symbols in Alignments 124
RSUB Identifying Reversing Substitutions 92