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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 CPP
42,753
questions
55,518
answers
573
users
Recent questions tagged CPP
2
answers
5
views
How to initialize a vector with a range of numbers in C++
asked
40 minutes
ago
by
avibootz
cpp
cpp-initialize-vector-range-of-numbers
initialize-vector-range-of-numbers
1
answer
9
views
How to do modulo multiplication for 64‑bit values without using BigInteger in C++
asked
22 hours
ago
by
avibootz
cpp
cpp-modulo-multiplication-64-bit-values-without-biginteger
modulo-multiplication-64-bit-values-without-biginteger
1
answer
16
views
How to remove every N‑th element from a vector in C++
asked
1 day
ago
by
avibootz
cpp
cpp-remove-every-n-element-vector
remove-every-n-element-vector
1
answer
15
views
How to build sparse array in C++
asked
2 days
ago
by
avibootz
cpp
cpp-build-sparse-array
build-sparse-array
1
answer
15
views
How to check if a given vector is a sparse vector in C++
asked
2 days
ago
by
avibootz
cpp
cpp-check-sparse-vector
check-sparse-vector
1
answer
14
views
How to generates all valid permutations of parentheses for a given n in C++
asked
2 days
ago
by
avibootz
cpp
cpp-generates-all-valid-permutations-of-parentheses-given-n
generates-all-valid-permutations-of-parentheses-given-n
1
answer
30
views
How to extract and sort numbers from a string containing numbers and text in C++
asked
4 days
ago
by
avibootz
cpp
cpp-extract-sort-numbers-string
extract-sort-numbers-string
1
answer
35
views
How to convert radians to degrees and degrees to radians in C++
asked
5 days
ago
by
avibootz
cpp
cpp-convert-radians-degrees-degrees-radians
convert-radians-degrees-degrees-radians
1
answer
45
views
How to find the N smallest values in a 2D vector in C++
asked
Aug 9
by
avibootz
cpp
cpp-find-n-smallest-values-2d-vector
find-n-smallest-values-2d-vector
1
answer
35
views
How to generate all possible 3X3 magic squares in C++
asked
Aug 9
by
avibootz
cpp
cpp-generate-all-possible-3-3-magic-squares
generate-all-possible-3-3-magic-squares
2
answers
52
views
How to sort a vector with a single loop in C++
asked
Aug 8
by
avibootz
cpp
cpp-sort-vector-with-single-loop
sort-vector-with-single-loop
2
answers
67
views
How to remove extra whitespace from a string in C++
asked
Aug 7
by
avibootz
cpp
cpp-remove-extra-whitespace-string
remove-extra-whitespace-string
1
answer
53
views
How to calculate the distance between two latitude-longitude points in C++
asked
Aug 6
by
avibootz
cpp
cpp-distance-between-two-latitude-longitude-points
distance-between-two-latitude-longitude-points
1
answer
48
views
How to convert a decimal to a long in C++
asked
Aug 6
by
avibootz
cpp
cpp-convert-decimal-to-long
convert-decimal-to-long
1
answer
51
views
How to generate a random 3×3 magic square in C++
asked
Aug 6
by
avibootz
cpp
cpp-generate-random-3-3-magic-square
generate-random-3-3-magic-square
2
answers
68
views
How to generate a random 4×4 binary magic square (using only 0 and 1) in C++
asked
Aug 5
by
avibootz
cpp
cpp-generate-random-4-4-binary-magic-square-only-0-1
generate-random-4-4-binary-magic-square-only-0-1
1
answer
33
views
How to search a string using bitwise operators C++
asked
Aug 5
by
avibootz
cpp
cpp-search-string-using-bitwise-operators
search-string-using-bitwise-operators
1
answer
50
views
How to approximate Big‑O complexity experimentally by measuring how runtime scales as input size grows in C++
asked
Aug 4
by
avibootz
cpp
cpp-approximate-big-o-complexity-experimentally-by-measuring-runtime-scales
approximate-big-o-complexity-experimentally-by-measuring-runtime-scales
1
answer
46
views
How to determine if two sentences talk about similar topic in C++
asked
Aug 4
by
avibootz
cpp
cpp-determine-if-two-sentences-talk-about-similar-topic
determine-if-two-sentences-talk-about-similar-topic
1
answer
36
views
How to use the Cartesian product of two ranges to generate all coordinates for an n * m grid in C++
asked
Aug 4
by
avibootz
cpp
cpp-cartesian-product-two-ranges-generate-all-coordinates-grid
cartesian-product-two-ranges-generate-all-coordinates-grid
2
answers
68
views
How to remove duplicate words with Unicode characters from free‑text in C++
asked
Aug 3
by
avibootz
cpp
cpp-remove-duplicate-words-unicode-free-text
remove-duplicate-words-unicode-free-text
1
answer
45
views
How to remove duplicate words from free‑text in C++
asked
Aug 2
by
avibootz
cpp
cpp-remove-duplicate-words-from-free-text
remove-duplicate-words-from-free-text
1
answer
51
views
How to remove duplicate case‑insensitive words separated by multiple delimiters from a string in C++
asked
Aug 1
by
avibootz
cpp
cpp-remove-duplicate-case-insensitive-words-multiple-delimiters-from-string
remove-duplicate-case-insensitive-words-multiple-delimiters-from-string
1
answer
52
views
How to perform high‑performance reversible text compression using a word dictionary in C++
asked
Jul 31
by
avibootz
cpp
cpp-text-compression-using-word-dictionary
text-compression-using-word-dictionary
2
answers
54
views
How to determine whether a point lies inside a 2D triangle in C++
asked
Jul 31
by
avibootz
cpp
cpp-determine-point-inside-2d-triangle
determine-point-inside-2d-triangle
1
answer
44
views
How to traverse a vector from both sides at the same time in C++
asked
Jul 30
by
avibootz
cpp
cpp-traverse-vector-both-sides-same-time
traverse-vector-both-sides-same-time
1
answer
52
views
How to generate random Powerball lottery numbers (pick 5 numbers from 1-69 + 1 Powerball from 1-26) in C++
asked
Jul 29
by
avibootz
cpp
cpp-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
53
views
How to compute the total number of Powerball lottery combinations (5 out of 99 and 1 out of 26) in C++
asked
Jul 28
by
avibootz
cpp
cpp-compute-total-number-powerball-lottery-combinations-5-99-and-1-26
compute-total-number-powerball-lottery-combinations-5-99-and-1-26
1
answer
60
views
How to generate random lottery numbers for 6 numbers out of 37 and 1 power number out of 7 in C++
asked
Jul 27
by
avibootz
cpp
cpp-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
57
views
How to compute the total number of lottery combinations for choosing 6 out of 37 and 1 power out of 7 in C++
asked
Jul 27
by
avibootz
cpp
cpp-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
51
views
How to compute the total number of lottery combinations for choosing 6 numbers out of 37 in C++
asked
Jul 26
by
avibootz
cpp
cpp-total-lottery-combinations-choosing-6-out-of-37
total-lottery-combinations-choosing-6-out-of-37
1
answer
43
views
How to render a triangle using uniform buffer with SDL_GPU in C++
asked
Jul 24
by
avibootz
cpp
sdl3
sdl-gpu
cpp-render-triangle-using-uniform-buffer-sdl-gpu
render-triangle-using-uniform-buffer-sdl-gpu
1
answer
63
views
How to find the Nth set bit in a 64‑bit integer with C++
asked
Jul 24
by
avibootz
cpp
cpp-find-n-set-bit-in-64-bit-integer
find-n-set-bit-in-64-bit-integer
1
answer
69
views
How to find the Nth set bit in a 32‑bit integer with C++
asked
Jul 24
by
avibootz
cpp
cpp-find-n-set-bit-in-32-bit-integer
find-n-set-bit-in-32-bit-integer
1
answer
63
views
How to render a triangle using SDL_GPU in C++
asked
Jul 23
by
avibootz
cpp
sdl-gpu
sdl3
cpp-render-triangle-sdl-gpu
render-triangle-sdl-gpu
1
answer
57
views
How to convert a decimal number to a rational number in C++
asked
Jul 22
by
avibootz
cpp
cpp-convert-decimal-number-to-rational-number
convert-decimal-number-to-rational-number
1
answer
49
views
How to sort three numbers most simply in C++
asked
Jul 22
by
avibootz
cpp
cpp-sort-three-numbers-most-simply
sort-three-numbers-most-simply
1
answer
65
views
How to round an integer up to the nearest multiple of 'multiple' in C++
asked
Jul 21
by
avibootz
cpp
cpp-round
cpp-round-integer-up-nearest-multiple-of-multiple
round-integer-up-nearest-multiple-of-multiple
1
answer
62
views
How to find the minimal possible sum of two distinct elements in a vector with C++
asked
Jul 21
by
avibootz
cpp
cpp-minimal-sum-two-elements-vector
minimal-sum-two-elements-vector
1
answer
59
views
How to clear a window to some color with SDL_GPU and C++
asked
Jul 19
by
avibootz
cpp
sdl-gpu
sdl3
cpp-clear-window-to-some-color-with-sdl-gpu
clear-window-to-some-color-sdl-gpu
1
answer
60
views
How to split a 32‑bit integer into its four bytes in C++
asked
Jul 19
by
avibootz
cpp
cpp-split-32-bit-integer-into-four-bytes
split-32-bit-integer-into-four-bytes
1
answer
58
views
How to split a string using a regular expression delimiter in C++
asked
Jul 19
by
avibootz
cpp
cpp-split-string-using-regular-expression-delimiter
split-string-using-regular-expression-delimiter
1
answer
54
views
How to split a string using ranges in C++20
asked
Jul 19
by
avibootz
cpp
split-string-using-ranges-cpp20
split-string-using-ranges
1
answer
61
views
How to split a number N into M random positive parts whose sum is exactly N in C++
asked
Jul 19
by
avibootz
cpp
cpp-split-number-n-into-m-random-parts-whose-sum-is-n
split-number-n-into-m-random-parts-whose-sum-is-n
1
answer
60
views
How to determine whether two axis‑aligned rectangles overlap in C++
asked
Jul 18
by
avibootz
cpp
cpp-determine-whether-two-axis-aligned-rectangles-overlap
determine-whether-two-axis-aligned-rectangles-overlap
1
answer
60
views
How to generate 3 no-digit repeated random integers, each with distinct digits in C++
asked
Jul 17
by
avibootz
cpp
cpp-generate-3-no-digit-repeated-random-integers-each-with-distinct-digits
generate-3-no-digit-repeated-random-integers-each-with-distinct-digits
1
answer
65
views
How to generate N random integers, each with distinct digits and exact length L in C++
asked
Jul 16
by
avibootz
cpp
generate-n-random-integers-with-distinct-digits-and-length-l
1
answer
46
views
How to generate N random integers composed of exactly M distinct digits in C++
asked
Jul 16
by
avibootz
cpp
cpp-generate-n-random-integers-with-m-distinct-digits
generate-n-random-integers-with-m-distinct-digits
1
answer
57
views
How to generate 3 integers between 100 and 999 each with unique digits in C++
asked
Jul 16
by
avibootz
cpp
cpp-generate-3-integers-100-999-each-unique
digits
generate-3-integers-100-999-each-unique
1
answer
51
views
How to convert latitude and longitude differences (in degrees) into distances (in meters) with C++
asked
Jul 15
by
avibootz
cpp
cpp-latitude-longitude-differences-degrees-to-distances-meters
latitude-longitude-differences-degrees-to-distances-meters
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