Mariya mariyadiminsky

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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	'use strict';

	/****************************************
	* Chapter 3 Exercises: Functions
	*****************************************

	#EXERCISE 1: Minimum

	The previous chapter introduced the standard function Math.min that returns
	its smallest argument. We can do that ourselves now. Write a function min that

	'use strict';
	var _ = require('underscore');

	//######### EXAMPLE 1 #################/
	//use _.reduce to multiply all the values in an array

	var arr = [10,20,40,50,60,70];
	var multiplied = _.reduce(arr, function (x, y) { return x * y; });

	//tests

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD