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to Reverse String (Legacy) in the JavaScript Track

Published at Mar 16 2019 · 0 comments
Instructions
Test suite
Solution

Note:

This exercise has changed since this solution was written.

Reverse String

Reverse a string

For example: input: "cool" output: "looc"

Setup

Go through the setup instructions for JavaScript to install the necessary dependencies:

http://exercism.io/languages/javascript/installation

Running the test suite

The provided test suite uses Jasmine. You can install it by opening a terminal window and running the following command:

npm install -g jasmine

Run the test suite from the exercise directory with:

jasmine reverse-string.spec.js

In many test suites all but the first test have been marked "pending". Once you get a test passing, activate the next one by changing xit to it.

Source

Introductory challenge to reverse an input string https://medium.freecodecamp.org/how-to-reverse-a-string-in-javascript-in-3-different-ways-75e4763c68cb

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.

reverse-string.spec.js

var reverseString = require('./reverse-string');

describe('ReverseString', function () {
  it('empty string', function () {
    var expected = '';
    var actual = reverseString('');
    expect(actual).toEqual(expected);
  });

  xit('a word', function () {
    var expected = 'tobor';
    var actual = reverseString('robot');
    expect(actual).toEqual(expected);
  });

  xit('a capitalized word', function () {
    var expected = 'nemaR';
    var actual = reverseString('Ramen');
    expect(actual).toEqual(expected);
  });

  xit('a sentence with punctuation', function () {
    var expected = '!yrgnuh ma I';
    var actual = reverseString('I am hungry!');
    expect(actual).toEqual(expected);
  });

  xit('a palindrome', function () {
    var expected = 'racecar';
    var actual = reverseString('racecar');
    expect(actual).toEqual(expected);
  });
});
function reverseString(string) {
  if (string.length === 0) {
    return '';
  } else {
    return string.split("").reverse().join("");
  }
}

module.exports = reverseString;

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