lambda x:sum([i*[i]for i in range(1,x+2)],[])[x]
Let we have a array of numbers with repetitions.
How to create dictionary of frequencies in one line(without "for")?
Any ideas?
EDIT: This has already been reported site-wide here.
When I clicked the bar to show an answer which had been submitted after I had loaded the page, the new answer was loaded, but above the pagination controls. See the screenshot below (complete with freehand circle) for clarification.
Little Boxes
code-golf ascii-art
There's a song called Little Boxes about suburban sprawl that has lyrics as follows:
Little boxes on the hillside,
Little boxes made of ticky tacky,
Little boxes on the hillside,
Little boxes all the same.
There's a green one and a pink one
And a b...
You are given a wall of dimensions W x H, and a number of bullets, B (all integers > 0). You will fire all B bullets into the wall, which is a grid, uniformly at random. That is, each bullet fired must have an equal chance of landing in every cell on the grid. Cells on the grid look like this:...
Challenge
Your challenge is simply to write a program in the language of your choosing that when run, determines the highest possible score for a board of Scrabble - For the sake of this challenge, a few rules have been modified.
Notably, bonus squares are counted for every single word on the b...Anonymous
Anonymous
DASL (Datapoint's Advanced Systems Language) was a programming language and compiler proprietary to Datapoint. Primarily influenced by Pascal with some C touches, it was created in the early 1980s by Gene Hughes.
The compiler output was assembly language, which was typically processed through a peep-hole optimizer before the assembler and linker.
Reflecting its name, DASL was used for systems programming, mainly by the vendor itself....
The DASL Programming Language (Distributed Application Specification Language) is a high-level, strongly typed programming language originally developed at Sun Microsystems Laboratories between 1999 and 2003 as part of the Ace Project. The goals of the project were to enable rapid development of web-based applications based on Sun's J2EE architecture, and to eliminate the steep learning curve of platform-specific details.
DASL defines an application as a domain model with one or more logical presentation models, where a logical presentation model consists of a choreography of the domain model objects...
Janus is a computer programming language partially described by K. Kahn and Vijay A. Saraswat in "Actors as a special case of concurrent constraint (logic) programming", in SIGPLAN Notices, October 1990. Janus is a concurrent constraint language without backtracking.
Janus models concurrency through the use of bag channels. Code that needs to send a message to a process does so by constraining a bag to be the union of another bag and the singleton bag of the message. The other bag is then available to be constrained for sending subsequent messages.
The process receives the message by matching the...
Janus is a time-reversible programming language written at Caltech in 1982. The operational semantics of the language were formally specified, together with a program inverter and an invertible self-interpreter, in 2007 by Tetsuo Yokoyama and Robert Glück. A Janus inverter and interpreter is made freely available by the TOPPS research group at DIKU. Another Janus interpreter was implemented in Prolog in 2009. The below summarises the language presented in the 2007 paper.
Janus is an imperative programming language with a global store (there is no stack or heap allocation). Janus is a reversible...
Anonymous
Anonymous
Background
In Boggle, a round is scored by adding up the points for each unique word a player has found (i.e. any word that more than one player has found is worth 0 points). The points are calculated based on the number of letters in each word, as follows:
3 letters: 1 point
4 letters: 1 poin...
Output
# # # # # ##### ## #
## #### ####### # # ##
#### ## ## # ### #######
# # # # ##### ### # #
# # ### ###...8
If a challenge is tagged with code-golf or fastest-code, do you really have to say that that is the winning criteria in the question? It seems pretty obvious, just by looking at the tags, right? After all, we don't say "this is a discussion" on questions tagged with discussion, do we?
However (j...
Anonymous
Anonymous
Ulam spiral 2
Like Ulam, I had a boring moment and began drawing a spiral like him's. But his version is utterly incorrect, as the \ diagonal distorts the equation n^2.
The following picture illustrates an wrong Ulam spiral at left and a correct at right:
I challenge you to output a numbered...Anonymous
