christopher-beckham

quicksort :: [Int] -> [Int]
quicksort [] = []
quicksort [x] = [x]
quicksort xs = 
  quicksort(less) ++ [pivot] ++ quicksort(greater)
  where
    m = length xs `div` 2
    pivot = xs!!m
    less = [ xs!!i | i <- [0..(length xs)-1], xs!!i <= pivot && i /= m ]
    greater = [ xs!!i | i <- [0..(length xs)-1], xs!!i > pivot && i /= m ]

christopher-beckham

http://en.wikipedia.org/wiki/Animal
http://en.wikipedia.org/wiki/Gnathifera_(phylum)
http://en.wikipedia.org/wiki/Gnathostomulid
http://en.wikipedia.org/wiki/Testis
http://en.wikipedia.org/wiki/Infertility
http://en.wikipedia.org/wiki/Embryo_transfer
http://en.wikipedia.org/wiki/Foal
http://en.wikipedia.org/wiki/Gestation
http://en.wikipedia.org/wiki/Uterus
http://en.wikipedia.org/wiki/Asherman%27s_syndrome

christopher-beckham

from sys import stdin as d
def dr(): return d.readline().rstrip()
def gr(): r1=int(dr())-1; return [ [ int(s) for s in dr().split() ] for z in [1]*4 ][r1]
nc=int(dr())
for i in range(nc):r=list(set(gr()).intersection(set(gr())));l=len(r);print ''.join(['Case #',str(i+1),': ',"Volunteer cheated!"if l==0 else"Bad magician!"if l>1 else`r[0]`])

christopher-beckham

def quicksort(arr):
  if arr == []:
    return []
  if len(arr) == 1:
    return arr
  m = len(arr) / 2
  pivot = arr[m]
  less = [ arr[x] for x in range(0, len(arr)) if arr[x] <= pivot and x != m ]
  greater = [ arr[x] for x in range(0, len(arr)) if arr[x] > pivot and x != m ]
  return quicksort(less) + [pivot] + quicksort(greater)

christopher-beckham

What is the difference between ${var}, "$var", and "${var}" in the Bash shell?

http://stackoverflow.com/questions/18135451/what-is-the-difference-between-var-var-and-var-in-the-bash-shell

tl;dr - curly braces are used to disambiguate, quotes are used to form a "single word".

SSH keys

christopher-beckham

from sys import stdin
import sys

N = 10 # number of sequences

body = stdin.read()
body = body.split('\n')
body = body[3:len(body)-2]
final_body = []
for elem in body:

christopher-beckham

digraph unix {
	node [color=lightblue2, style=filled];
	"node1" -> "node2"
	"node3" -> "node2"
	"node4" -> "node1"
}

christopher-beckham

Dirs:

• ssh - Contains scripts/data/etc. that should be scped onto remote machines such as Chris's cluster.
• 22 - blah

christopher-beckham

Testing $x^2$

christopher-beckham

from lasagne.nonlinearities import *
from lasagne.layers import Layer

class SpatialSoftmaxLayer(Layer):
    """
    Softmax layer that computes the softmax over pixels in the same location,
    i.e., over the channel axis. This layer will automatically use the CuDNN
    version of this softmax if it is available.
    
    Parameters