Frank Cooke platypusrex

TA, Lead Engineer, and Dev Manager CI&T

platypusrex / badge.json

Created October 24, 2020 18:10

platypusrex / nested-list.html

Created July 4, 2019 00:25

Infinitely Nested List:

platypusrex / findOdd.js

Created April 8, 2018 17:08

Given an array, find the int that appears an odd number of times.

	const findOdd = (arr) => arr.reduce((a,b) => a ^ b);

	findOdd([1,1,2,-2,5,2,4,4,-1,-2,5])

platypusrex / end.js

Created October 15, 2015 15:27

Javascript - Check if a string (first argument) ends with the given target string (second argument).

	function end(str, target) {
	return str.substr(str.length - target.length) === target ? true : false;
	}

	end('platypus', 's');
	end('I\'m pretty sure this thing is on', 'on');

platypusrex / largest.js

Created October 15, 2015 15:24

Javascript - Return an array consisting of the largest number from each provided sub-array

	function largest(arr) {
	return arr.map(function(val){
	return val.reduce(function(prev, current){
	return current > prev ? current : prev;
	});
	});
	}

	console.log(largest([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]));

platypusrex / titleCase.js

Created October 15, 2015 14:50

Javascript - Title case any phrase

	function titleCase(str) {
	return str.split(' ').map(function(val){
	return val.charAt(0).toUpperCase() + val.slice(1).toLowerCase();
	}).join(' ');
	}

	titleCase("sHoRt AnD sToUt");

platypusrex / differt.js

Created October 15, 2015 04:32

Javascript - Compare two arrays and return a new array with any items not found in both of the original arrays.

	function diff(arr1, arr2) {
	return newArr = arr1.filter(function(val){
	return arr2.indexOf(val) === -1;
	}).concat(arr2.filter(function(val){
	return arr1.indexOf(val) === -1;
	}));
	}

	diff(['diorite', 'andesite', 'grass', 'dirt', 'pink wool', 'dead shrub'], ['diorite', 'andesite', 'grass', 'dirt', 'dead shrub']);

platypusrex / union.js

Last active October 15, 2015 04:27

Javascript - Take 2 or more arrays and return an array of unique value in the original order

	function unite(arr1, arr2, arr3) {
	return Array.from(arguments).reduce(function(a, b){
	return a.concat(b).filter(function(val,pos,arr){
	return arr.indexOf(val) === pos;
	});
	});
	}

	unite([1, 2, 3], [5, 2, 1, 4], [2, 1], [6, 7, 8]);

platypusrex / flatten.js

Created October 15, 2015 04:20

Javascript - Flatten any nested array (regardless of nesting)

	function steamroller(arr) {
	// I'm a steamroller, baby
	arr = Array.prototype.concat.apply([], arr);
	return arr.some(Array.isArray) ? steamroller(arr) : arr;
	}

	steamroller([1, [2], [3, [[4]]]]);

platypusrex / optimusPrime.js

Created October 15, 2015 04:18

Javascript - Sum all prime numbers