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algorithms
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refactor: remove old files

pull/3/head
sundowndev 2020-11-18 19:09:04 +01:00
parent 95ee9d79a0
commit 2bc024f29f
18 changed files with 1 additions and 1279 deletions
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0
.github/workflows/nodejs.yml → .github/workflows/go.yaml vendored
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26
.github/workflows/python-tests.yml vendored
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@ -1,26 +0,0 @@
name: Python tests
on: [push]
jobs:
build:
runs-on: ubuntu-latest
strategy:
max-parallel: 4
matrix:
python-version: [3.6, 3.7]
steps:
- uses: actions/checkout@v1
- name: Set up Python ${{ matrix.python-version }}
uses: actions/setup-python@v1
with:
python-version: ${{ matrix.python-version }}
#- name: Install dependencies
# run: |
# python -m pip install --upgrade pip
# pip install -r requirements.txt
- name: Test solutions
run: python -m unittest python/*/solution.py -v

2
.gitignore vendored
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@ -1 +1 @@
node_modules

8
javascript/CamelCase/README.md
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Write simple .camelCase method (camel_case function in PHP, CamelCase in C# or camelCase in Java) for strings. All words must have their first letter capitalized without spaces.
For instance:
```js
"hello case".camelCase() // => HelloCase
"camel case word".camelCase() // => CamelCaseWord
```

15
javascript/CamelCase/solution.js
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@ -1,15 +0,0 @@
const assert = require('assert');
String.prototype.camelCase = function() {
return this.split(' ')
.map((word) => word.charAt(0).toUpperCase() + word.slice(1))
.join('');
};
describe('Basic tests', (_) => {
assert.equal('test case'.camelCase(), 'TestCase');
assert.equal('camel case method'.camelCase(), 'CamelCaseMethod');
assert.equal('say hello '.camelCase(), 'SayHello');
assert.equal(' camel case word'.camelCase(), 'CamelCaseWord');
assert.equal(''.camelCase(), '');
});

3
javascript/Pangram/README.md
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@ -1,3 +0,0 @@
A pangram is a sentence that contains every single letter of the alphabet at least once. For example, the sentence "The quick brown fox jumps over the lazy dog" is a pangram, because it uses the letters A-Z at least once (case is irrelevant).
Given a string, detect whether or not it is a pangram. Return True if it is, False if not. Ignore numbers and punctuation.

11
javascript/Pangram/solution.js
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@ -1,11 +0,0 @@
const assert = require('assert');
function isPangram(string) {
const alph = 'abcdefghijklmnopqrstuvwxyz';
const str = string.toLowerCase();
return alph.split('').every(e => str.indexOf(e) !== -1);
}
assert.equal(isPangram('The quick brown fox jumps over the lazy dog.'), true);
assert.equal(isPangram('This is not a pangram.'), false);

21
javascript/anagrams/README.md
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@ -1,21 +0,0 @@
What is an anagram? Well, two words are anagrams of each other if they both contain the same letters. For example:
```js
'abba' & 'baab' == true
'abba' & 'bbaa' == true
'abba' & 'abbba' == false
'abba' & 'abca' == false
```
Write a function that will find all the anagrams of a word from a list. You will be given two inputs a word and an array with words. You should return an array of all the anagrams or an empty array if there are none. For example:
```js
anagrams('abba', ['aabb', 'abcd', 'bbaa', 'dada']) => ['aabb', 'bbaa']
anagrams('racer', ['crazer', 'carer', 'racar', 'caers', 'racer']) => ['carer', 'racer']
anagrams('laser', ['lazing', 'lazy', 'lacer']) => []
```

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javascript/anagrams/solution.js
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@ -1,20 +0,0 @@
const assert = require('assert');
// Solution
function anagrams(word, words) {
const sort = (word) => {
return word.split('').sort().join('');
}
return words.filter(w => sort(w) === sort(word));
}
// Tests
describe("Solution", function() {
it("should find anagrams", function() {
assert.deepEqual(anagrams('abba', ['aabb', 'abcd', 'bbaa', 'dada']), ['aabb', 'bbaa']);
assert.deepEqual(anagrams('racer', ['crazer', 'carer', 'racar', 'caers', 'racer']), ['carer', 'racer']);
assert.deepEqual(anagrams('laser', ['lazing', 'lazy', 'lacer']), []);
assert.deepEqual(anagrams('alert', ['alter', ,'alper', 'later']), ['alter', 'later']);
});
});

16
javascript/prime_number/README.md
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@ -1,16 +0,0 @@
Define a function that takes an integer argument and returns logical value `true` or `false` depending on if the integer is a prime.
Per Wikipedia, a prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself.
Example
```js
is_prime(1) /* false */
is_prime(2) /* true */
is_prime(-1) /* false */
```
Assumptions
- You can assume you will be given an integer input.
- You can not assume that the integer will be only positive. You may be given negative numbers as well (or `0`).
- There are no fancy optimizations required, but still the most trivial solutions might time out. Try to find a solution which does not loop all the way up to `n`.

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javascript/prime_number/solution.js
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const assert = require('assert');
// Solution
function isPrime(num) {
if (isNaN(num) || !isFinite(num) || num%1 || num<2) return false;
for(let x = 2; x <= Math.sqrt(num); x++)
if(num % x === 0) return false;
return true;
}
// Tests
describe("Basic", ()=>{
it("Basic tests", () => {
assert.equal(isPrime(0), false, "0 is not prime");
assert.equal(isPrime(1), false, "1 is not prime");
assert.equal(isPrime(2), true, "2 is prime");
assert.equal(isPrime(73), true, "73 is prime");
assert.equal(isPrime(75), false, "75 is not prime");
assert.equal(isPrime(-1), false, "-1 is not prime");
});
it("Test prime", () => {
assert.equal(isPrime(3), true, "3 is prime");
assert.equal(isPrime(5), true, "5 is prime");
assert.equal(isPrime(7), true, "7 is prime");
assert.equal(isPrime(41), true, "41 is prime");
assert.equal(isPrime(5099), true, "5099 is prime");
});
it("Test not prime", () => {
assert.equal(isPrime(4), false, "4 is not prime");
assert.equal(isPrime(6), false, "6 is not prime");
assert.equal(isPrime(8), false, "8 is not prime");
assert.equal(isPrime(9), false, "9 is not prime");
assert.equal(isPrime(45), false, "45 is not prime");
assert.equal(isPrime(-5), false, "-5 is not prime");
assert.equal(isPrime(-8), false, "-8 is not prime");
assert.equal(isPrime(-41), false, "-41 is not prime");
});
});

14
javascript/shuffle/README.md
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@ -1,14 +0,0 @@
*How to shuffle the characters in a string in JavaScript ?*
e.g. Given "ABCDEFG", return something like "GEFBDCA".
```js
console.log(shuffle("the quick brown fox jumps over the lazy dog"));
//-> "veolrm hth ke opynug tusbxq ocrad ofeizwj"
console.log(shuffle("the quick brown fox jumps over the lazy dog"));
//-> "o dt hutpe u iqrxj yaenbwoolhsvmkcger ozf "
```
- Best performance case: O(n)
- Worst performance case: O(n log n)

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javascript/shuffle/solution.js
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@ -1,32 +0,0 @@
const assert = require('assert');
function shuffle(string) {
const arr = string.split('');
for(let i = arr.length - 1; i >= 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
const tmp = arr[i];
arr[i] = arr[j];
arr[j] = tmp;
}
return arr.join('');
}
// Tests
describe("Solution", function() {
it("should not be the same string", function() {
let str = 'the quick brown fox jumps over the lazy dog';
assert.notEqual(shuffle(str), str);
});
it("should stay the same string", function() {
const str = 'f';
assert.equal(shuffle(str), str);
});
it("should shuffle string", function() {
const str = 'a b';
assert.equal(['a b', 'b a', ' ba', 'ba ', 'ab ', ' ab'].indexOf(shuffle(str)) !== -1, true);
});
});

998
package-lock.json generated
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@ -1,998 +0,0 @@
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26
package.json
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@ -1,26 +0,0 @@
{
"name": "algorithms",
"private": true,
"version": "1.0.0",
"description": "My personal implementations of data structure and random algorithms",
"main": "index.js",
"dependencies": {},
"devDependencies": {
"mocha": "^6.2.0"
},
"scripts": {
"test": "mocha javascript/**/solution.js",
"pytest": "python3 python/*/solution.py -v"
},
"repository": {
"type": "git",
"url": "git+https://github.com/sundowndev/algorithms.git"
},
"keywords": [],
"author": "",
"license": "ISC",
"bugs": {
"url": "https://github.com/sundowndev/algorithms/issues"
},
"homepage": "https://github.com/sundowndev/algorithms#readme"
}

14
python/shuffle/README.md
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@ -1,14 +0,0 @@
*How to shuffle the characters in a string in JavaScript ?*
e.g. Given "ABCDEFG", return something like "GEFBDCA".
```js
print(shuffle("the quick brown fox jumps over the lazy dog"));
//-> "veolrm hth ke opynug tusbxq ocrad ofeizwj"
print(shuffle("the quick brown fox jumps over the lazy dog"));
//-> "o dt hutpe u iqrxj yaenbwoolhsvmkcger ozf "
```
- Best performance case: O(n)
- Worst performance case: O(n log n)

BIN
python/shuffle/__pycache__/solution.cpython-36.pyc
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33
python/shuffle/solution.py
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@ -1,33 +0,0 @@
#!/usr/bin/python3
import math
import random
import unittest
def shuffle(n):
arr = list(n)
for i in range(0, len(arr)):
j = math.floor(random.random() * (1 + i))
tmp = arr[i]
arr[i] = arr[j]
arr[j] = tmp
return ''.join(arr)
class TestStringMethods(unittest.TestCase):
def test_shuffle(self):
string = 'my passphrase to shuffle'
self.assertNotEqual(shuffle(string), string)
def test_shuffle2(self):
string = 'a'
self.assertEqual(shuffle(string), string)
def test_shuffle3(self):
string = 'a b'
self.assertIn(shuffle(string), ['a b', 'b a', ' ba', 'ba ', 'ab ', ' ab'])
if __name__ == '__main__':
unittest.main()