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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
43,500
questions
56,675
answers
573
users
Recent questions tagged RUBY
1
answer
14
views
How to merge two sorted arrays without duplicates in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-array
ruby-merge-arrays-without-duplicates
merge-arrays-without-duplicates
2
answers
31
views
How to sum the corners of a matrix in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-matrix
ruby-sum-corners-matrix
sum-corners-matrix
1
answer
22
views
How to extract all the substrings between single quotation marks, including the quotes in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-substring
ruby-extract-all-substrings-single-quotation-marks
extract-all-substrings-single-quotation-marks
3
answers
36
views
How to extract all the substrings between single quotation marks in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-substring
ruby-extract-all-substrings-single-quotation-marks
extract-all-substrings-single-quotation-marks
3
answers
40
views
How to extract substring between single quotation marks in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-substring
ruby-extract-substring-single-quotation-marks
extract-substring-single-quotation-marks
3
answers
50
views
How to swap two numbers without using a third variable (temp) in Ruby
asked
3 days
ago
by
avibootz
ruby
ruby-swap-two-numbers
swap-two-numbers
ruby-swap-two-numbers-without-third
swap-two-numbers-without-third
1
answer
39
views
How to rearrange an array into a zig-zag pattern (a < b > c < d > e < f > g) in Ruby
asked
4 days
ago
by
avibootz
ruby
ruby-rearrange-array-zig-zag-pattern
rearrange-array-zig-zag-pattern
1
answer
44
views
How to compare floating-point values safely in Ruby
asked
5 days
ago
by
avibootz
ruby
ruby-floating-point
ruby-compare-floating-point-safely
compare-floating-point-safely
3
answers
57
views
How to generate a range of floating-point numbers in Ruby
asked
5 days
ago
by
avibootz
ruby
ruby-floating-point
ruby-generate-range-floating-point-numbers
generate-range-floating-point-numbers
3
answers
68
views
How to mask a number with stars except the last 4 digits in Ruby
asked
6 days
ago
by
avibootz
ruby
ruby-mask-number-stars-except-last-4-digits
mask-number-stars-except-last-4-digits
2
answers
73
views
How to remove characters present in first string from the second string in Ruby
asked
Oct 4
by
avibootz
ruby
ruby-string
ruby-remove-characters-first-string-from-second-string
remove-characters-first-string-from-second-string
1
answer
52
views
How to calculate annually compound interest in Ruby
asked
Oct 3
by
avibootz
ruby
ruby-compound-interest
compound-interest
1
answer
57
views
How to convert a string to an array of characters in Ruby
asked
Oct 3
by
avibootz
ruby
ruby-string
ruby-string-to-array-characters
string-to-array-characters
1
answer
66
views
How to generate an 8 digits random number in Ruby
asked
Oct 2
by
avibootz
ruby
ruby-generate-8-digit-random-number
generate-8-digit-random-number
2
answers
68
views
How do you find the position of the most significant bit (MSB) of an unsigned integer in Ruby
asked
Oct 1
by
avibootz
ruby
ruby-position-msb-integer
position-msb-integer
1
answer
51
views
How to use XOR to swap two characters in a string in Ruby
asked
Sep 30
by
avibootz
ruby
ruby-xor-swap-two-characters-string
xor-swap-two-characters-string
1
answer
69
views
How to find the intersection of two arrays (values that exist in both arrays) in Ruby
asked
Sep 29
by
avibootz
ruby
ruby-intersection-two-arrays
intersection-two-arrays
1
answer
65
views
How to check whether the letters of a word exist in a string (order doesn't matter) in Ruby
asked
Sep 27
by
avibootz
ruby
ruby-letters-of-word-exist-in-string-order-doesnt-matter
letters-of-word-exist-in-string-order-doesnt-matter
2
answers
87
views
How to convert days into human-readable weeks and days in Ruby
asked
Sep 26
by
avibootz
ruby
ruby-convert-days-human-readable-weeks-days
convert-days-human-readable-weeks-days
1
answer
67
views
How to find repeated patterns of numbers in the rows of a matrix with Ruby
asked
Sep 25
by
avibootz
ruby
ruby-repeated-patterns-numbers-rows-matrix
repeated-patterns-numbers-rows-matrix
1
answer
56
views
How to find repeated rows of a matrix in Ruby
asked
Sep 25
by
avibootz
ruby
ruby-find-repeated-rows-matrix
find-repeated-rows-matrix
1
answer
68
views
How to convert multiple date formats to YYYY-MM-DD in Ruby
asked
Sep 25
by
avibootz
ruby
ruby-convert-convert-date-formats-to-yyyy-mm-dd
convert-convert-date-formats-to-yyyy-mm-dd
1
answer
64
views
How to print a number with a thousand separator as spaces in Ruby
asked
Sep 22
by
avibootz
ruby
ruby-number-thousand-separator-spaces
number-thousand-separator-spaces
1
answer
67
views
How to count the numbers with even number of digits in an array with Ruby
asked
Sep 21
by
avibootz
ruby
ruby-count-numbers-even-number-of-digits-array
count-numbers-even-number-of-digits-array
1
answer
69
views
How to compare two dates in Ruby
asked
Sep 20
by
avibootz
ruby
ruby-compare-two-dates
compare-two-dates
2
answers
100
views
How to get the country name from the 2-letter country code (alpha-2) in Ruby
asked
Sep 19
by
avibootz
ruby
ruby-country-name-from-country-code
country-name-from-country-code
1
answer
76
views
How to extract the last N digits from a number in Ruby
asked
Sep 18
by
avibootz
ruby
ruby-extract-last-n-digits-number
extract-last-n-digits-number
1
answer
81
views
How to extract all floating-point numbers from a string of words in Ruby
asked
Sep 18
by
avibootz
ruby
ruby-extract-all-floating-point-numbers-string
extract-all-floating-point-numbers-string
1
answer
74
views
How to extract all digits from a string in Ruby
asked
Sep 17
by
avibootz
ruby
ruby-extract-all-digits-string
extract-all-digits-string
1
answer
87
views
How to get the first digit after the decimal point of a float number in Ruby
asked
Sep 15
by
avibootz
ruby
ruby-get-first-digit-after-decimal-point-float
get-first-digit-after-decimal-point-float
1
answer
82
views
How to get the first digit of a float number in Ruby
asked
Sep 15
by
avibootz
ruby
ruby-get-first-digit-float
get-first-digit-float
1
answer
75
views
How to compute the factorial of a number greater than 20 in Ruby
asked
Sep 14
by
avibootz
ruby
ruby-compute-factorial-of-number-greater-20
compute-factorial-of-number-greater-20
1
answer
82
views
How to select N unique random values that appear exactly once in an existing array with Ruby
asked
Sep 13
by
avibootz
ruby
ruby-n-unique-random-values-appear-once-in-array
n-unique-random-values-appear-once-in-array
1
answer
78
views
How to select N unique random indices from an existing array in Ruby
asked
Sep 12
by
avibootz
ruby
ruby-select-n-unique-random-indices-array
select-n-unique-random-indices-array
1
answer
72
views
How to find the longest shared prefix among all words in a string with Ruby
asked
Sep 12
by
avibootz
ruby
ruby-longest-shared-prefix-words-string
longest-shared-prefix-words-string
1
answer
82
views
How to find the longest common prefix of all the words in a string with Ruby
asked
Sep 11
by
avibootz
ruby
ruby-string
ruby-longest-common-prefix-all-words-string
longest-common-prefix-all-words-string
1
answer
77
views
How to find common words in two strings with Ruby
asked
Sep 11
by
avibootz
ruby
ruby-string
ruby-find-common-words-two-strings
find-common-words-two-strings
1
answer
88
views
How to remove stop words from a string in Ruby
asked
Sep 11
by
avibootz
ruby
ruby-string
ruby-remove-stop-words-string
remove-stop-words-string
1
answer
86
views
How to check whether a floating-point variable is an integer (has no fractional part) in Ruby
asked
Sep 10
by
avibootz
ruby
ruby-check-whether-floating-point-variable-is-integer
check-whether-floating-point-variable-is-integer
1
answer
93
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
102
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
93
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
95
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
86
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
90
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
97
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
87
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
116
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
101
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
88
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
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