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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
42,690
questions
55,442
answers
573
users
Recent questions tagged ruby
1
answer
2
views
How to find the median among three given numbers in Ruby
asked
2 hours
ago
by
avibootz
ruby
ruby-median-among-three-given-numbers
median-among-three-given-numbers
1
answer
4
views
How to extract and sort numbers from a string containing numbers and text in Ruby
asked
2 hours
ago
by
avibootz
ruby
ruby-extract-sort-numbers-string
extract-sort-numbers-string
1
answer
8
views
How to convert radians to degrees and degrees to radians in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-convert-radians-degrees-degrees-radians
convert-radians-degrees-degrees-radians
2
answers
11
views
How to find the longest substring without repeating characters in Ruby
asked
1 day
ago
by
avibootz
ruby
ruby-substring
ruby-longest-substring-without-repeating-characters
longest-substring-without-repeating-characters
1
answer
15
views
How to find the Kth smallest number in an unsorted array with Ruby
asked
2 days
ago
by
avibootz
ruby
ruby-find-k-smallest-number-unsorted-array
find-k-smallest-number-unsorted-array
1
answer
14
views
How to find the N smallest values in a 2D array in Ruby
asked
2 days
ago
by
avibootz
ruby
ruby-find-n-smallest-values-2d-array
find-n-smallest-values-2d-array
1
answer
34
views
How to sort an array with a single loop in Ruby
asked
4 days
ago
by
avibootz
ruby
ruby-sort-array-with-single-loop
sort-array-with-single-loop
1
answer
32
views
How to remove extra whitespace from a string in Ruby
asked
5 days
ago
by
avibootz
ruby
ruby-remove-extra-whitespace-string
remove-extra-whitespace-string
1
answer
45
views
How to calculate the distance between two latitude-longitude points in Ruby
asked
6 days
ago
by
avibootz
ruby
ruby-distance-between-two-latitude-longitude-points
distance-between-two-latitude-longitude-points
1
answer
35
views
How to convert a decimal to integer in Ruby
asked
6 days
ago
by
avibootz
ruby
ruby-convert-decimal-integer
convert-decimal-integer
1
answer
40
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
44
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
1
answer
53
views
How to calculate the volume of a cube in Ruby
asked
Aug 4
by
avibootz
ruby
ruby-calculate-volume-cube
calculate-volume-cube
1
answer
41
views
How to remove all non-ASCII characters from a string in Ruby
asked
Aug 4
by
avibootz
ruby
ruby-string
ruby-ascii
ruby-remove-non-ascii-characters-string
non-ascii-characters-string
1
answer
43
views
How to remove duplicate words with Unicode characters from free‑text in Ruby
asked
Aug 4
by
avibootz
ruby
ruby-remove-duplicate-words-unicode-free-text
remove-duplicate-words-unicode-free-text
1
answer
46
views
How to remove duplicate words from free‑text in Ruby
asked
Aug 3
by
avibootz
ruby
ruby-remove-duplicate-words-from-free-text
remove-duplicate-words-from-free-text
1
answer
42
views
How to remove duplicate case‑insensitive words separated by multiple delimiters from a string in Ruby
asked
Aug 2
by
avibootz
ruby
ruby-remove-duplicate-case-insensitive-words-multiple-delimiters-from-string
remove-duplicate-case-insensitive-words-multiple-delimiters-from-string
1
answer
41
views
How to perform high‑performance reversible text compression using a word dictionary in Ruby
asked
Aug 1
by
avibootz
ruby
ruby-text-compression-using-word-dictionary
text-compression-using-word-dictionary
1
answer
37
views
How to traverse a slice from both sides at the same time in Ruby
asked
Jul 31
by
avibootz
ruby
ruby-traverse-slice-both-sides-same-time
traverse-slice-both-sides-same-time
1
answer
56
views
How to generate random Powerball lottery numbers (pick 5 numbers from 1-69 + 1 Powerball from 1-26) in Ruby
asked
Jul 30
by
avibootz
ruby
ruby-generate-random-powerball-lottery-numbers-5-of-1-69-and-1-of-1-26
generate-random-powerball-lottery-numbers-5-of-1-69-and-1-of-1-26
1
answer
46
views
How to compute the total number of Powerball lottery combinations (5 out of 99 and 1 out of 26) in Ruby
asked
Jul 29
by
avibootz
ruby
ruby-compute-total-number-powerball-lottery-combinations-5-99-and-1-26
compute-total-number-powerball-lottery-combinations-5-99-and-1-26
1
answer
46
views
How to generate random lottery numbers for 6 numbers out of 37 and 1 power number out of 7 in Ruby
asked
Jul 28
by
avibootz
ruby
ruby-generate-random-lottery-numbers-for-6-out-of-37-power-1-out-of-7
generate-random-lottery-numbers-for-6-out-of-37-power-1-out-of-7
1
answer
39
views
How to compute the total number of lottery combinations for choosing 6 out of 37 and 1 power out of 7 in Ruby
asked
Jul 27
by
avibootz
ruby
ruby-total-lottery-combinations-choosing-6-out-of-37-power-1-out-of-7
total-lottery-combinations-choosing-6-out-of-37-power-1-out-of-7
1
answer
45
views
How to divide a given amount into bills (banknotes) and coins in Ruby
asked
Jul 26
by
avibootz
ruby
ruby-divide-given-amount-into-bills-coins
divide-given-amount-into-bills-coins
1
answer
40
views
How to find the Nth set bit in a 32‑bit integer with Ruby
asked
Jul 25
by
avibootz
ruby
ruby-find-n-set-bit-in-32-bit-integer
find-n-set-bit-in-32-bit-integer
1
answer
66
views
How to convert a decimal number to a rational number in Ruby
asked
Jul 23
by
avibootz
ruby
ruby-convert-decimal-number-to-rational-number
convert-decimal-number-to-rational-number
1
answer
48
views
How to round a number to the nearest power of 2 in Ruby
asked
Jul 22
by
avibootz
ruby
ruby-round
ruby-round-number-to-nearest-power-of-2
round-number-to-nearest-power-of-2
1
answer
46
views
How to round an integer up to the nearest multiple of 'multiple' in Ruby
asked
Jul 22
by
avibootz
ruby
ruby-round
ruby-round-integer-up-nearest-multiple-of-multiple
round-integer-up-nearest-multiple-of-multiple
1
answer
54
views
How to find the minimal possible sum of two distinct elements in an array with Ruby
asked
Jul 21
by
avibootz
ruby
ruby-minimal-sum-two-elements-array
minimal-sum-two-elements-array
1
answer
54
views
How to split a 32‑bit integer into its four bytes in Ruby
asked
Jul 20
by
avibootz
ruby
ruby-split-32-bit-integer-into-four-bytes
split-32-bit-integer-into-four-bytes
1
answer
56
views
How to split a number N into M random positive parts whose sum is exactly N in Ruby
asked
Jul 19
by
avibootz
ruby
ruby-split-number-n-into-m-random-parts-whose-sum-is-n
split-number-n-into-m-random-parts-whose-sum-is-n
1
answer
49
views
How to determine whether two axis‑aligned rectangles overlap in Ruby
asked
Jul 18
by
avibootz
ruby
ruby-determine-whether-two-axis-aligned-rectangles-overlap
determine-whether-two-axis-aligned-rectangles-overlap
1
answer
61
views
How to count the number of non-overlapping instances of a substring in a string in Ruby
asked
Jul 18
by
avibootz
ruby
ruby-count-non-overlapping-instances-substring-in-string
count-non-overlapping-instances-substring-in-string
1
answer
70
views
How to generate 3 no-digit repeated random integers, each with distinct digits in Ruby
asked
Jul 17
by
avibootz
ruby
ruby-generate-3-no-digit-repeated-random-integers-each-with-distinct-digits
generate-3-no-digit-repeated-random-integers-each-with-distinct-digits
1
answer
51
views
How to generate N random integers, each with distinct digits and exact length L in Ruby
asked
Jul 16
by
avibootz
ruby
ruby-generate-n-random-integers-with-distinct-digits-and-length-l
generate-n-random-integers-with-distinct-digits-and-length-l
1
answer
52
views
How to calculate the next multiple of 10 in Ruby
asked
Jul 15
by
avibootz
ruby
ruby-next-multiple-of-10
next-multiple-of-10
1
answer
49
views
How to generate a UUID (Universally Unique Identifier) in Ruby
asked
Jul 15
by
avibootz
ruby
ruby-generate-uuid
generate-uuid
1
answer
53
views
How to sort a string in the order: lowercase letters - uppercase letters - odd digits - even digits in Ruby
asked
Jul 14
by
avibootz
ruby
ruby-sort-string-order-lowercase-uppercase-odd-even
sort-string-order-lowercase-uppercase-odd-even
1
answer
55
views
How to create an alphabet rangoli (geometric and character pattern) of size N in Ruby
asked
Jul 13
by
avibootz
ruby
ruby-create-alphabet-rangoli
create-alphabet-rangoli
1
answer
55
views
How to wrap a string into lines of width w in Ruby
asked
Jul 11
by
avibootz
ruby
ruby-wrap-string-into-lines-width-w
wrap-string-into-lines-width-w
1
answer
51
views
How to compute the day of the week for January 1st of any given year in Ruby
asked
Jul 11
by
avibootz
ruby
ruby-day-of-week-january-1st-any-given-year
day-of-week-january-1st-any-given-year
1
answer
60
views
How to print Floyd's triangle in Ruby
asked
Jul 10
by
avibootz
ruby
ruby-print-floyds-triangle
print-floyds-triangle
1
answer
56
views
How to get common letters that appear in every word in a list of words with Ruby
asked
Jul 10
by
avibootz
ruby
ruby-common-letters-every-word-list-words
common-letters-every-word-list-words
1
answer
59
views
How to find the length of the longest common subsequence (LCS) in two strings with Ruby
asked
Jul 9
by
avibootz
ruby
ruby-length-longest-common-subsequence-lcs-two-strings
length-longest-common-subsequence-lcs-two-strings
1
answer
58
views
How to encode and decode any string into Base‑36 in Ruby
asked
Jul 7
by
avibootz
ruby
ruby-encode-decode-string-base-36
encode-decode-string-base-36
1
answer
45
views
How to convert a number to any base in Ruby
asked
Jul 7
by
avibootz
ruby
ruby-convert-number-to-any-base
convert-number-to-any-base
1
answer
53
views
How to generate random positive integers that sum to N in Ruby
asked
Jul 6
by
avibootz
ruby
ruby-generate-random-integers-sum-to-n
generate-random-integers-sum-to-n
1
answer
60
views
How to perform multiple 5‑card draws from a shuffled 52‑card deck in Ruby
asked
Jul 5
by
avibootz
ruby
ruby-perform-multiple-5-card-draws-from-52-card-deck
perform-multiple-5-card-draws-from-52-card-deck
1
answer
58
views
How to pick 5 random cards from a 52‑card deck in Ruby
asked
Jul 4
by
avibootz
ruby
ruby-pick-5-random-cards-from-a-52-card-deck
pick-5-random-cards-from-a-52-card-deck
1
answer
63
views
How to randomly place a random value in each row of an 8x8 int list with zero values in Ruby
asked
Jul 4
by
avibootz
ruby
ruby-randomly-place-random-value-each-row-8-8-int-array
randomly-place-random-value-each-row-8-8-int-array
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