DataKinds

require 'pry'


# stack ops
def pop stack
    stack.pop
end

def push(stack, x)
    stack.push x

DataKinds

NB. https://leetcode.com/problems/spiral-matrix/

]in=: 1+3 3$i.9
]in2 =: 1+3 4$i.12

walk=: 3 : 0 NB. call with `walk in`
i=. 0 0
d=. 0 NB. R D L U
m=. ($ y) $ 0
o=. a:

DataKinds

NB. https://leetcode.com/problems/container-with-most-water/

height=: {{ (i. # y),. y }} 1 8 6 2 5 4 8 3 7

NB. call as ({: height) metric {. height
NB. metric=: {{ (({: y) <. {: x) * | ({. x) - {. y }}
metric=: ({:@] <. {:@[) * [: | {.@[ - {.@]

f=:>./ @ , @ (metric"1 _"_ 1~) @ {{ (i. # y),. y }}

DataKinds

NB. here's a validator that only works with parens
NB. call it with c d '())()()()()()()())))))(())()(()'
d=: +/\@(=&'(' + -@=&')') NB. paren nesting depth
c=: {{ */ (0&= {: y),(=&0 +/ <&0 y) }} NB. nesting depth validator


NB. here's a validator that works with all the paren types given
NB. by the spec at https://leetcode.com/problems/valid-parentheses/description/
NB. call it with isvalid '[()]{(()[]{})}'
identify=: (3&| ,. (<&3)) @ ('({[)}]'&i.)                  NB. returns (paren type, 0=open/1=close)

DataKinds

NB. https://leetcode.com/problems/longest-common-prefix/description/
lcp=:> @ }: @ (([: ~: (1&= @ $ @ ~.)"1) <;.1 {."1) 
lcp (|: @: >)'flower';'flof';'flower';'flighr'

DataKinds

# frozen_string_literal: true

source "https://rubygems.org"

git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }

gem "nokogiri"

DataKinds

import Numeric
import Data.Ratio

data Op =
    Plus Op Op
  | Mul Op Op
  | Pow Op Op
  | Ln Op
  | E Op
  | Pi Op

DataKinds

#!/usr/bin/env perl6
use MONKEY;
use nqp;

module TREPL {
### STATIC DEFINITIONS ###
role Descriptive[Str $desc] {
	has Str $.Desc = $desc;
}

DataKinds

{-# LANGUAGE ViewPatterns #-}

import Data.List

dropPieces :: [String] -> [String]
dropPieces (top:mid:rows) =
  let willDrop = zipWith (\t m -> m == '-' && t /= '-') top mid
      newTopRow = (\(t,m,w) -> if w then '-' else t) <$> (zip3 top mid willDrop)
      newMidRow = (\(t,m,w) -> if w then t else m) <$> (zip3 top mid willDrop)
  in

DataKinds

"""
Filename: genome.py
Author:   Tyler
Purpose:  Construct phylogenetic trees.
"""

# ;; Consider this my final hoorah before dropping my CS major.
# ;; https://xkcd.com/224/

code="""