John Lynch john9631
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| { | |
| "metadata": { | |
| "name": "R Programming Assignment 1" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ | |
| { |
john9631
/ AssignmentWithListComprehensionCorrs
Last active
December 24, 2015 20:49
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| { | |
| "metadata": { | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
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| { |
john9631
/ gist:6999320
Created
October 15, 2013 22:00
Correlation Exercise: Programming Assignment 2 / 3, Computing for Data Analysis, Coursera JH
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| { | |
| "metadata": { | |
| "language": "Julia", | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ |
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| { | |
| "metadata": { | |
| "language": "Julia", | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ |
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| # Conventionally | |
| if var < 900 | |
| println("Hello World") | |
| end | |
| # Short circuit evaluation | |
| var < 900 && print("Hello World") |
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| function middle(i) | |
| let s = string(abs(i)) , l = length(s) , mid = int((l+1)/2) | |
| l < 3 ? | |
| "error: not enough digits" : | |
| iseven(l) ? | |
| "error: number of digits is even" : | |
| join((s[mid-1],s[mid],s[mid+1])) | |
| end | |
| end |
john9631
/ gist:7114873
Last active
December 26, 2015 07:19
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| def fib(n): | |
| """ old fib exponential complexity ? """ | |
| if n == 0 or n == 1: | |
| return 1 | |
| else: | |
| return fib(n - 1) + fib(n - 2) | |
| #Julia | |
| fib(n::Integer) = return(n > 1 ? (fib(n-1) + fib(n-2)) : one(n)) |
john9631
/ gist:7163058
Created
October 25, 2013 22:55
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| { | |
| "metadata": { | |
| "language": "Julia", | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ |
john9631
/ gist:7163488
Created
October 25, 2013 23:40
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| { | |
| "metadata": { | |
| "language": "Julia", | |
| "name": "" | |
| }, | |
| "nbformat": 3, | |
| "nbformat_minor": 0, | |
| "worksheets": [ | |
| { | |
| "cells": [ |
john9631
/ gist:7164571
Created
October 26, 2013 02:17
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| def memoize(f): | |
| def mem(x): | |
| if x not in cache: | |
| cache[x] = f(x) | |
| return cache[x] | |
| cache = {} | |
| return mem | |
| #@memoize | |
| def fib(n=1): |
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