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Programming & Software Q&A | CollectiveSolver
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Welcome to collectivesolver - Programming & Software Q&A with code examples. A website with trusted programming answers. All programs are tested and work.
Contact: aviboots(AT)netvision.net.il
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Recent questions tagged RUBY
43,161
questions
56,039
answers
573
users
Recent questions tagged RUBY
1
answer
4
views
How to get the first digit after the decimal point of a float number in Ruby
asked
2 hours
ago
by
avibootz
ruby
ruby-get-first-digit-after-decimal-point-float
get-first-digit-after-decimal-point-float
1
answer
4
views
How to get the first digit of a float number in Ruby
asked
4 hours
ago
by
avibootz
ruby
ruby-get-first-digit-float
get-first-digit-float
1
answer
6
views
How to compute the factorial of a number greater than 20 in Ruby
asked
23 hours
ago
by
avibootz
ruby
ruby-compute-factorial-of-number-greater-20
compute-factorial-of-number-greater-20
1
answer
9
views
How to select N unique random values that appear exactly once in an existing array with Ruby
asked
2 days
ago
by
avibootz
ruby
ruby-n-unique-random-values-appear-once-in-array
n-unique-random-values-appear-once-in-array
1
answer
17
views
How to select N unique random indices from an existing array in Ruby
asked
3 days
ago
by
avibootz
ruby
ruby-select-n-unique-random-indices-array
select-n-unique-random-indices-array
1
answer
16
views
How to find the longest shared prefix among all words in a string with Ruby
asked
3 days
ago
by
avibootz
ruby
ruby-longest-shared-prefix-words-string
longest-shared-prefix-words-string
1
answer
26
views
How to find the longest common prefix of all the words in a string with Ruby
asked
4 days
ago
by
avibootz
ruby
ruby-string
ruby-longest-common-prefix-all-words-string
longest-common-prefix-all-words-string
1
answer
30
views
How to find common words in two strings with Ruby
asked
4 days
ago
by
avibootz
ruby
ruby-string
ruby-find-common-words-two-strings
find-common-words-two-strings
1
answer
33
views
How to remove stop words from a string in Ruby
asked
4 days
ago
by
avibootz
ruby
ruby-string
ruby-remove-stop-words-string
remove-stop-words-string
1
answer
33
views
How to check whether a floating-point variable is an integer (has no fractional part) in Ruby
asked
5 days
ago
by
avibootz
ruby
ruby-check-whether-floating-point-variable-is-integer
check-whether-floating-point-variable-is-integer
1
answer
43
views
How to compare two float arrays using a tolerance in Ruby
asked
Sep 8
by
avibootz
ruby
ruby-compare-two-float-arrays-tolerance
compare-two-float-arrays-tolerance
1
answer
48
views
How to split text without spaces into a list of words using dictionary-based segmentation in Ruby
asked
Sep 8
by
avibootz
ruby
ruby-split-text-without-spaces-into-words-dictionary
split-text-without-spaces-into-words-dictionary
1
answer
46
views
How to convert numbers from 0 to 999,999,999,999,999 (up to 999 trillion) into English words in Ruby
asked
Sep 6
by
avibootz
ruby
ruby-convert-numbers-0-999999999999999-english-words
convert-numbers-0-999999999999999-english-words
1
answer
46
views
How to parse a table into a binary tree in Ruby
asked
Sep 5
by
avibootz
ruby
ruby-parse-table-into-binary-tree
parse-table-into-binary-tree
1
answer
42
views
How to declare, initialize, and print a medium complexity, varied, feature‑rich data structure in Ruby
asked
Sep 3
by
avibootz
ruby
ruby-declare-initialize-print-medium-complexity-data-structure
declare-initialize-print-medium-complexity-data-structure
1
answer
48
views
How to sort an array of classes that contain nested classes using custom comparison logic in Ruby
asked
Sep 2
by
avibootz
ruby
ruby-sort-array-of-classes-contain-nested-classes
sort-array-of-classes-contain-nested-classes
1
answer
52
views
How to find the N most frequent non‑stopwords in a text in Ruby
asked
Aug 31
by
avibootz
ruby
ruby-n-most-frequent-non-stopwords-text
n-most-frequent-non-stopwords-text
1
answer
45
views
How to find the starting index of all occurrences of a word in a string in Ruby
asked
Aug 30
by
avibootz
ruby
ruby-find-starting-index-all-occurrences-word-string
find-starting-index-all-occurrences-word-string
2
answers
67
views
How to split a string into words in Ruby
asked
Aug 29
by
avibootz
ruby
ruby-split-string
ruby-split-string-into-words
split-string-into-words
1
answer
69
views
How to split a string into an array by delimiter and remove empty elements in Ruby
asked
Aug 28
by
avibootz
ruby
ruby-split-string-into-array-by-delimiter
split-string-into-array-by-delimiter
1
answer
50
views
How to convert any digital storage unit into all others (B, KB, MB, GB, TB, PB, EB, ZB, YB) in Ruby
asked
Aug 28
by
avibootz
ruby
ruby-convert-any-digital-storage-unit-into-all-others
convert-any-digital-storage-unit-into-all-others
1
answer
46
views
How to write the Tic-Tac-Toe game in Ruby
asked
Aug 27
by
avibootz
ruby
ruby-tic-tac-toe-game
tic-tac-toe-game
1
answer
45
views
How to write the 7 Boom game. If a number is divided by 7 or includes the digit 7, the user writes Boom in Ruby
asked
Aug 26
by
avibootz
ruby
ruby-7-boom-game
7-boom-game
1
answer
59
views
How to generate a random RGBA color and opacity in Ruby
asked
Aug 25
by
avibootz
ruby
ruby-generate-random-rgba-color-opacity
generate-random-rgba-color-opacity
1
answer
60
views
How to generate a series of unique HEX colors in Ruby
asked
Aug 24
by
avibootz
ruby
ruby-generate-series-unique-hex-colors
generate-series-unique-hex-colors
1
answer
61
views
How to generate a random color in RGB format with Ruby
asked
Aug 23
by
avibootz
ruby
ruby-generate-random-color-rgb-format
generate-random-color-rgb-format
1
answer
113
views
How to generate a random color in HEX format with Ruby
asked
Aug 23
by
avibootz
ruby
ruby-generate-random-color-hex-format
generate-random-color-hex-format
2
answers
133
views
How to print the numbers 0 to 31 by changing 1 bit each time in Ruby
asked
Aug 22
by
avibootz
ruby
ruby-print-0-31-changing-1-bit-each-time
print-0-31-changing-1-bit-each-time
1
answer
71
views
How to generate N random 1s in a zero-based matrix with Ruby
asked
Aug 21
by
avibootz
ruby
ruby-generate-n-random-1-zero-based-matrix
generate-n-random-1-zero-based-matrix
1
answer
62
views
How to check if two strings are anagrams (same letters, different words) in Ruby
asked
Aug 20
by
avibootz
ruby
ruby-check-two-strings-anagrams
check-two-strings-anagrams
1
answer
64
views
How to find all sequences of consecutive prime numbers whose sum equals N in Ruby
asked
Aug 20
by
avibootz
ruby
ruby-all-sequences-consecutive-prime-numbers-sum-equal-n
all-sequences-consecutive-prime-numbers-sum-equal-n
1
answer
67
views
How to print the first 100 prime numbers in Ruby
asked
Aug 18
by
avibootz
ruby
ruby-print-first-100-prime-numbers
print-first-100-prime-numbers
1
answer
69
views
How to initialize an array with a range of numbers in Ruby
asked
Aug 18
by
avibootz
ruby
ruby-initialize-array-range-of-numbers
initialize-array-range-of-numbers
1
answer
82
views
How to do modulo multiplication for 64‑bit values without using BigInteger in Ruby
asked
Aug 16
by
avibootz
ruby
ruby-modulo-multiplication-64-bit-values-without-biginteger
modulo-multiplication-64-bit-values-without-biginteger
1
answer
85
views
How to remove every N‑th element from an array in Ruby
asked
Aug 16
by
avibootz
ruby
ruby-remove-every-n-element-array
remove-every-n-element-array
1
answer
76
views
How to use # frozen_string_literal: true in Ruby
asked
Aug 15
by
avibootz
ruby
ruby-use-frozen-string-literal-true
use-frozen-string-literal-true
1
answer
76
views
How to build sparse array in Ruby
asked
Aug 15
by
avibootz
ruby
ruby-build-sparse-array
build-sparse-array
1
answer
79
views
How to get the first N digits of a BigInteger in Ruby
asked
Aug 14
by
avibootz
ruby
ruby-get-first-n-digits-biginteger
get-first-n-digits-biginteger
1
answer
86
views
How to find the median among three given numbers in Ruby
asked
Aug 13
by
avibootz
ruby
ruby-median-among-three-given-numbers
median-among-three-given-numbers
1
answer
91
views
How to extract and sort numbers from a string containing numbers and text in Ruby
asked
Aug 13
by
avibootz
ruby
ruby-extract-sort-numbers-string
extract-sort-numbers-string
1
answer
95
views
How to convert radians to degrees and degrees to radians in Ruby
asked
Aug 12
by
avibootz
ruby
ruby-convert-radians-degrees-degrees-radians
convert-radians-degrees-degrees-radians
2
answers
114
views
How to find the longest substring without repeating characters in Ruby
asked
Aug 11
by
avibootz
ruby
ruby-substring
ruby-longest-substring-without-repeating-characters
longest-substring-without-repeating-characters
1
answer
101
views
How to find the Kth smallest number in an unsorted array with Ruby
asked
Aug 10
by
avibootz
ruby
ruby-find-k-smallest-number-unsorted-array
find-k-smallest-number-unsorted-array
1
answer
87
views
How to find the N smallest values in a 2D array in Ruby
asked
Aug 10
by
avibootz
ruby
ruby-find-n-smallest-values-2d-array
find-n-smallest-values-2d-array
1
answer
82
views
How to sort an array with a single loop in Ruby
asked
Aug 8
by
avibootz
ruby
ruby-sort-array-with-single-loop
sort-array-with-single-loop
1
answer
95
views
How to remove extra whitespace from a string in Ruby
asked
Aug 8
by
avibootz
ruby
ruby-remove-extra-whitespace-string
remove-extra-whitespace-string
1
answer
103
views
How to calculate the distance between two latitude-longitude points in Ruby
asked
Aug 7
by
avibootz
ruby
ruby-distance-between-two-latitude-longitude-points
distance-between-two-latitude-longitude-points
1
answer
84
views
How to convert a decimal to integer in Ruby
asked
Aug 6
by
avibootz
ruby
ruby-convert-decimal-integer
convert-decimal-integer
1
answer
83
views
How to generate all 4×4 binary magic squares (using only 0 and 1) in Ruby
asked
Aug 5
by
avibootz
ruby
ruby-generate-all-4-4-binary-magic-squares-only-0-1
generate-all-4-4-binary-magic-squares-only-0-1
1
answer
100
views
How to check whether a matrix is a magic square or not in Ruby
asked
Aug 5
by
avibootz
ruby
ruby-check-matrix-magic-square
check-matrix-magic-square
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