Installation

npm i useful-ut

Import

let ut = require('useful-ut')

Usage

ut.String

digits: '01234567890'
specials: '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
ascii_letters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
ascii_lowercase: 'abcdefghijklmnopqrstuvwxyz'
ascii_uppercase: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'

ut.Random

boolean: function()
bytes: function()
choice: function()
chooseAny: function()
chooseFew: function()
float: function()
int: function()
randChoiceAsStr: function()
randomAsciiLetters: function()
randomAsciiLowercase: function()
randomAsciiUppercase: function()
randomDigits: function()
randomRange: function()
randomSpecials: function()
shuffle: function()

ut.Sorting

bubble_sort: function()
merge_sort: function()
quick_sort: function()

ut.Search

binary_search: function()
interpolation_search: function()
linear_search: function()

ut.BuiltIns

abs: function()
all: function()
any: function()
callable: function()
enumerate: function()
execution_time: function()
fact: function()
max: function()
median: function()
min: function()
range: function()
recursive_all: function()
recursive_any: function()
recursive_enumerate: function()
recursive_fact: function()
recursive_len: function()
recursive_max: function()
recursive_min: function()
recursive_sum: function()
recursive_zip: function()
sum: function()
zip: function()
bin(): function()
oct(): function()
hex(): function()
chr(): function()
ord(): function()

Examples

ut.Random.choice([1, 2, 3, 4, 5])
> 5
ut.Random.choice([1, 2, 3, 4, 5])
> 2


ut.Random.int(1, 1000)
> 429
ut.Random.int(1, 1000)
> 664

ut.Random.float(1, 14)
> 3.568412280886703

ut.Sorting.quick_sort([29, 53, 11, 59])
> [ 11, 29, 53, 59 ]

ut.Search.binary_search([1, 2, 3, 4, 5, 6, 7, 8, 9], 4)
> 3 (Index of key)

ut.Search.binary_serch([1, 2, 3], 4)
> -1 (Not found)

ut.BuiltIns.range(1, 100)
> [
     1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12,
    13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
    25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36,
    37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
    49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,
    61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
    73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84,
    85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96,
    97, 98, 99
  ]

ut.BuiltIns.range(1, 10, 2)
> [ 1, 3, 5, 7, 9 ]

ut.BuiltIns.range(10, 1, -1)
> [
    10, 9, 8, 7, 6,
     5, 4, 3, 2
  ]

ut.BuiltIns.max([42, 56, 20])
> 56 (Biggest element in array)

ut.BuiltIns.min([42, 56, 20])
> 20 (Smallest element in array)

ut.BuiltIns.enumerate([10, 11, 12, 13])
> [ [0, 10], [1, 11], [2, 12], [3, 13] ]

ut.BuiltIns.zip([1, 2, 3], [3, 2, 1])
> [ [1, 3], [2, 2], [3, 1] ]

ut.BuiltIns.zip([1, 2, 3], [4, 5, 6, 7, 8])
> [ [ 4, 1 ], [ 5, 2 ], [ 6, 3 ], [ 7, undefined ], [ 8, undefined ] ]

ut.BuiltIns.execution_time(() => {
    for (let _ of BuiltIns.range(1000)) {}
})
> 0.15330000221729279

ut.BuiltIns.bin(100)
> 1100100

ut.BuiltIns.hex(429635635)
> 199bb833

ut.BuiltIns.chr(425)
> Ʃ

ut.BuiltIns.ord('Ʃ')
> 425