---
title: Tokenize a string with escaping
id: 594faaab4e2a8626833e9c3d
challengeType: 5
---
## Description
Write a function or program that can split a string at each non-escaped occurrence of a separator character.
It should accept three input parameters:
It should output a list of strings. Rules for splitting: Rules for escaping: Demonstrate that your function satisfies the following test-case:
Given string one^|uno||three^^^^|four^^^|^cuatro|
and using
|
as a separator and ^
as escape character, your
function should output the following array:
['one|uno', ", 'three^^', 'four^|quatro', "]## Instructions
tokenize
is a function.
testString: 'assert(typeof tokenize === "function", "tokenize
is a function.");'
- text: tokenize
should return an array.
testString: 'assert(typeof tokenize("a", "b", "c") === "object", "tokenize
should return an array.");'
- text: 'tokenize("one^|uno||three^^^^|four^^^|^cuatro|", "|", "^")
should return ["one|uno", "", "three^^", "four^|cuatro", ""]")'
testString: 'assert.deepEqual(tokenize(testStr1, "|", "^"), res1, "tokenize("one^|uno||three^^^^|four^^^|^cuatro|", "|", "^")
should return ["one|uno", "", "three^^", "four^|cuatro", ""]");'
- text: 'tokenize("a@&bcd&ef&&@@hi", "&", "@")
should return ["a&bcd", "ef", "", "@hi"]
'
testString: 'assert.deepEqual(tokenize(testStr2, "&", "@"), res2, "tokenize("a@&bcd&ef&&@@hi", "&", "@")
should return ["a&bcd", "ef", "", "@hi"]
");'
```