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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 c#
43,227
questions
56,129
answers
573
users
Recent questions tagged c#
1
answer
89
views
How to sort by numbers a mixed pair of string and number elements in a list with C#
asked
Jan 22
by
avibootz
c#
c#-sort-list
sort-by-numbers-mixed-pair-of-string-number-elements-in-list
1
answer
107
views
How to turn a total number of seconds into years, months, days, minutes and seconds in C#
asked
Jan 21
by
avibootz
c#
c#-turn-total-number-of-seconds-into-years-months-days-minutes-seconds
turn-total-number-of-seconds-into-years-months-days-minutes-seconds
1
answer
107
views
How to check if a string is IPv4 or IPv6 or invalid in C#
asked
Jan 19
by
avibootz
c#
c#-check-if-string-is-ipv4-or-ipv6-or-invalid
check-if-string-is-ipv4-or-ipv6-or-invalid
1
answer
103
views
How to print a calendar for a specific month and year in C#
asked
Jan 18
by
avibootz
c#
c#-print-calendar-for-specific-month-and-year
print-calendar-for-specific-month-and-year
1
answer
104
views
How to print the calendar for a specific year in C#
asked
Jan 17
by
avibootz
c#
c#-print-calendar-for-specific-year
print-calendar-for-specific-year
1
answer
91
views
How to group words by first letter in C#
asked
Jan 16
by
avibootz
c#
c#-group-words-by-first-letter
group-words-by-first-letter
1
answer
100
views
How to find the volume of a capsule in C#
asked
Jan 12
by
avibootz
c#
c#-find-volume-of-capsule
find-volume-of-capsule
1
answer
88
views
How to implement ternary search to find a value in a sorted array with C#
asked
Jan 12
by
avibootz
c#
c#-implement-ternary-search-to-find-value-in-sorted-array
implement-ternary-search-to-find-value-in-sorted-array
1
answer
103
views
How to convert a character (flatten) matrix to a single string in C#
asked
Jan 10
by
avibootz
c#
c#-convert-character-matrix-to-single-string
convert-character-matrix-to-single-string
flatten_char_matrix
1
answer
102
views
How to convert mixed-type list items to an IEnumerable string using LINQ in C#
asked
Jan 9
by
avibootz
c#
c#-convert-mixed-type-list-items-to-ienumerable-string-using-linq
convert-mixed-type-list-items-to-ienumerable-string-using-linq
1
answer
103
views
How to convert a string array to a list using LINQ in C#
asked
Jan 8
by
avibootz
c#
c#-convert-string-array-to-list-using-linq
convert-string-array-to-list-using-linq
2
answers
140
views
How to call a Windows shell command using C#
asked
Jan 8
by
avibootz
c#
c#-call-windows-shell-command
call-windows-shell-command
1
answer
103
views
How to hash a set of GUIDs in C#
asked
Jan 7
by
avibootz
c#
c#-hash-set-of-guids
hash-set-of-guids
1
answer
92
views
How to check if each letter in a string maps to the first letter of a word in another string with C#
asked
Jan 6
by
avibootz
c#
c#-each-letter-string-maps-first-letter-word-another-string
each-letter-string-maps-first-letter-word-another-string
1
answer
122
views
How to check if a string can be constructed by using the letters of another string in C#
asked
Jan 5
by
avibootz
c#
c#-string-constructed-letters-another-string
string-constructed-letters-another-string
1
answer
89
views
How to product of array except self (arr[i] is equal to the product of all the elements except arr[i]) in C#
asked
Jan 3
by
avibootz
c#
c#-product-array-except-self-arr_i
product-array-except-self-arr_i
2
answers
138
views
How to convert days into human-readable years, months and days in C#
asked
Dec 31, 2025
by
avibootz
c#
c#-days-to-human-readable-years-months-days
days-to-human-readable-years-months-days
1
answer
109
views
How to clear bits in the given range in C#
asked
Dec 30, 2025
by
avibootz
c#
c#-clear-bits-given-range
clear-bits-given-range
1
answer
95
views
How to get the 4 least significant bits in a byte with C#
asked
Dec 28, 2025
by
avibootz
c#
c#-get-4-least-significant-bits-byte
get-4-least-significant-bits-byte
1
answer
123
views
How to check whether a user string contains any forbidden words from a list in C#
asked
Dec 26, 2025
by
avibootz
c#
c#-check-user-string-contains-forbidden-words
check-user-string-contains-forbidden-words
2
answers
135
views
How to check if the sum of two halves of a number is equal in C#
asked
Dec 22, 2025
by
avibootz
c#
c#-cpp-sum-two-halves-number-equal
sum-two-halves-number-equal
1
answer
120
views
How to check if two halves of a number are equal in C#
asked
Dec 21, 2025
by
avibootz
c#
c#-two-halves-number-equal
two-halves-number-equal
2
answers
123
views
How to check if two strings are isomorphic in C#
asked
Dec 19, 2025
by
avibootz
c#
c#-check-two-strings-isomorphic
check-two-strings-isomorphic
1
answer
121
views
How to remove text between parentheses in a string using C#
asked
Dec 17, 2025
by
avibootz
c#
c#-remove-text-between-parentheses-in-string
remove-text-between-parentheses-in-string
2
answers
141
views
How to print the boundary elements of a matrix in C#
asked
Dec 15, 2025
by
avibootz
c#
c#-print-boundary-elements-matrix
print-boundary-elements-matrix
1
answer
129
views
How to create alphabetical four letters combinations using LINQ in C#
asked
Dec 15, 2025
by
avibootz
c#
c#-alphabetical-four-letter-combinations-linq
alphabetical-four-letter-combinations-linq
1
answer
104
views
How to use LINQ select query on a list of objects in C#
asked
Dec 14, 2025
by
avibootz
c#
c#-linq-select-list-objects
linq-select-list-objects
1
answer
139
views
How to calculate the area of a triangle using Heron’s formula in C#
asked
Dec 14, 2025
by
avibootz
c#
c#-area-triangle-herons-formula
area-triangle-herons-formula
1
answer
121
views
How to find the missing number in an array containing numbers from 1 to n in O(1) time complexity with C#
asked
Dec 10, 2025
by
avibootz
c#
c#-missing-number-array-o1-time-complexity
missing-number-array-o1-time-complexity
1
answer
103
views
How to convert a hashtable to string array in C#
asked
Dec 4, 2025
by
avibootz
c#
c#-hashtable-string-array
hashtable-string-array
2
answers
145
views
How to convert a hashtable keys to string array in C#
asked
Dec 4, 2025
by
avibootz
c#
c#-hashtable-keys-string-array
hashtable-keys-string-array
1
answer
112
views
How to convert a hashtable to a string in C#
asked
Dec 4, 2025
by
avibootz
c#
c#-hashtable-string
hashtable-string
1
answer
119
views
How to convert a Roman number to an integer in C#
asked
Dec 3, 2025
by
avibootz
c#
c#-roman-integer
roman-integer
1
answer
123
views
How to format an array of strings in lines with maxWidth without breaking the words in C#
asked
Dec 2, 2025
by
avibootz
c#
c#-format-array-strings-lines-maxwidth
format-array-strings-lines-maxwidth
1
answer
110
views
How to convert an integer to Roman numerals in C#
asked
Dec 1, 2025
by
avibootz
c#
c#-integer-roman-numerals
integer-roman-numerals
1
answer
148
views
How to check if the last index of an array is reachable by jumping based on element values from index 0 in C#
asked
Dec 1, 2025
by
avibootz
c#
c#-last-index-array-jumping-by-elements-value
last-index-array-jumping-by-elements-value
1
answer
108
views
How to find two prime numbers that, when concatenated, form another prime number in C#
asked
Nov 28, 2025
by
avibootz
c#
c#-prime-concatenate
prime-concatenate
1
answer
110
views
How to generate an N-digit integer random number in C#
asked
Nov 27, 2025
by
avibootz
c#
c#-n-digit-integer-random
n-digit-integer-random
1
answer
100
views
How to select random two digits from anywhere in a number with C#
asked
Nov 26, 2025
by
avibootz
c#
c#-random-two-anywhere-digits
random-two-anywhere-digits
1
answer
86
views
How to select random two consecutive digits from a number in C#
asked
Nov 25, 2025
by
avibootz
c#
c#-random-two-consecutive-digits
random-two-consecutive-digits
1
answer
106
views
How to convert a degree to a compass direction in C#
asked
Nov 24, 2025
by
avibootz
c#
c#-degree-compass-direction
degree-compass-direction
1
answer
99
views
How to calculate the sum of all Fibonacci numbers between two left and right indices in C#
asked
Nov 23, 2025
by
avibootz
c#
c#-sum-fibonacci-numbers
sum-fibonacci-numbers
1
answer
138
views
How to generate all possible permutations and combinations of an array of chars in C#
asked
Nov 21, 2025
by
avibootz
c#
c#-array-all-permutations-combinations
all-permutations-combinations
1
answer
153
views
How to generate all possible permutations and combinations of a list of chars in C#
asked
Nov 21, 2025
by
avibootz
c#
c#-list-all-permutations-combinations
all-permutations-combinations
1
answer
104
views
How to find the first 4-digit prime number where all digits are unique in C#
asked
Nov 20, 2025
by
avibootz
c#
c#-4-digit-prime-unique
4-digit-prime-unique
1
answer
100
views
How to calculate the length of legB and hypotenuse of a right-angle triangle with a given perimeter and legA in C#
asked
Nov 19, 2025
by
avibootz
c#
c#-right-angle-triangle
right-angle-triangle
1
answer
138
views
How to generate a random integer from a range [0, N] that is not in a unique integer list with C#
asked
Nov 19, 2025
by
avibootz
c#
c#-random
c#-random-excluding-list
random-excluding-list
1
answer
116
views
How to replace all occurrences of a specific digit in a floating-point number with C#
asked
Nov 18, 2025
by
avibootz
c#
c#-replace-all-occurrences-digit-float
replace-all-occurrences-digit-float
1
answer
130
views
How to replace a digit in a floating-point number by index with C#
asked
Nov 17, 2025
by
avibootz
c#
c#-replace-digit-float
replace-digit-float
1
answer
108
views
How to check whether each substring range (L to R) from an array of substring ranges is a palindrome in C#
asked
Nov 16, 2025
by
avibootz
c#
c#-substring-range-palindrome
substring-range-palindrome
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