January 2015 1HaskellADay Problems and Solutions

January 2015

• January 30th, 2015: Catted Prime Factors http://lpaste.net/119587 Today's answer shows us composed primes. http://lpaste.net/119639 No. Wait. Primes aren't composed, by definition, right? Well, anyway...
• January 29th, 2015: For today's haskell problem we peace-out by making triangles, http://lpaste.net/119524 not war. And our solution: http://lpaste.net/119562 make my day, punk! ... with triangles (extra-spicy, please)! Bleh, our non-partial solution: no fun, no triangles! http://lpaste.net/119562 Can you fix it?
• January 28th, 2015: Criss-cross; http://lpaste.net/119353 APPLESAUCE! ... butnot Christopher Cross for today's Haskell problem. Anndddd, safety first, or don't cross that yellow line! http://lpaste.net/119434 for today's solution.
• January 27th, 2015: What's 'All in the Family'? http://lpaste.net/119319 Elegance is. Today's Haskell problem is about a little bit more elegance. And lines. And triangles. Our solution http://lpaste.net/119326 involves slopes and stuff ... from Elementary School. Remember?
• January 26th, 2015: Just a simple counting-triangles problem using Data.Graph for today's #haskell problem http://lpaste.net/119228 In our solution we put the triangles into a  Graph, counting crows http://lpaste.net/119256 ... I meant: 'triangles.' 
• January 23rd, 2015: A simple request on this fine Friday: solve the 'aug'mented matrix for today's #haskell problem http://lpaste.net/119049 Row-echelon solverSOLVED! (WOOT!s included for free!) lpaste.net/119102
• January 22nd, 2015: Row-echelon form; not solved yet, http://lpaste.net/118964 but PDC! ('pretty durn closer!') Aug! Our matrix has been row-echeloned! http://lpaste.net/119045 A solution for today's Haskell problem.
• January 21st, 2015: Vectors are Num(bers), too ... adding two (same-length) vectors for today's Haskell problem http://lpaste.net/118906 ... and rollin' the vector-addition solution is posted at http://lpaste.net/118907
• January 20th, 2015: May I introduce Miss Abby Normal http://lpaste.net/118862 for today's Haskell problem? Vector normalization for reduced row-echelon form. NORM! A solution to today's Haskell problem is CHEERSfully posted at http://lpaste.net/118898
• January 19th, 2015: Oh, something new for today's #haskell problem? Well, then: how about a ... MATH PROBLEM! ... 'sorta' Eheh. http://lpaste.net/118714 We have a guest who decided to solve the problem: Þor (Thor). http://lpaste.net/118729 THOR SMASH! No. Wait. That's the Hulk. Never mind.
• January 16th, 2015: Let it snow, let it snow, let it matrix-solver! for today's #haskell problem with (Ooh! Ooh!) pretty matrix pictures! http://lpaste.net/118571

Picture. Terminal. Snowflake-matrix. BlinchtenLightzen.

• January 15th, 2015: n, k, and b are all you need (oh, and the answers) for today's Haskell problem http://lpaste.net/118488
• January 14th, 2015: More fun with fractals for today's #haskell problem: plotting the Harriss Spiral http://lpaste.net/118414
• January 13th, 2015: Yesterday we did not learn about the (constructive?) truth of 2+2 = 4. Sorry. Today we try to equate two circled rows http://lpaste.net/118367
• January 9th, 2015: In which it is shown that snarkiness is unavoidable when @geophf presents a Mensa-puzzle for today's #haskell problem http://lpaste.net/118121
• January 8th, 2015: Cressida, a smart little girl (in fact: a Mensan), would like you to determine her age for today's #haskell problem http://lpaste.net/118059
• January 7th, 2015: Fibbing down-low on the fibs! for today's haskell problem lpaste.net/118013
• January 5th, 2015: I'm looking over a 4-leaf tuple/That I overlooked before! #haskell problem today: over definition for Lens-on-tupleshttp://lpaste.net/117906 A solution is 'overdefined' by @bretthall at http://lpaste.net/117934
• January 4th, 2015: It's a new year, and I've just woken up and smelled the Lens-coffee! Bob Marley welcomes you to the New Year with a #haskell problem about #lenses http://lpaste.net/117815 Sing with me! set _2 "love" (1, 2) A solution is offered by @bretthall at http://lpaste.net/117933