These problems are related to math and geometry.
Can make arithmetic progression from sequence - June 5, 2023
Check if it is a straight line - June 4, 2023
Sum in a matrix - May 23, 2023
Find three consecutive integers that sum to a given number - May 22, 2023
The kth factor of n - May 19, 2023
Make array zero by subtracting equal amounts - May 13, 2023
Valid boomerang - May 8, 2023
Substrings that begin and end with the same letter - May 5, 2023
Greatest common divisor of strings - February 1, 2023
Max points on a line - January 8, 2023
Convert to base -2 - January 4, 2023
Check if number is a sum of powers of three - January 4, 2023
Count the digits that divide a number - January 1, 2023
Distinct prime factors of product of array - January 1, 2023
Count number of ways to place houses - December 28, 2022
Perfect number - December 27, 2022
Next palindrome using same digits - December 27, 2022
Count anagrams - December 25, 2022
Powerful integers - December 18, 2022
Day of the year - December 18, 2022
Add two integers - December 17, 2022
Ugly number III - December 14, 2022
Number of ways to buy pens and pencils - December 6, 2022
Fraction to recurring decimal - December 5, 2022
Number of subarrays with gcd equal to k - December 3, 2022
Number of subarrays with lcm equal to k - December 3, 2022
Nth digit - December 2, 2022
Factorial trailing zeroes - December 1, 2022
Nim game - November 30, 2022
Sparse matrix multiplication - November 30, 2022
Find greatest common divisor of array - November 25, 2022
Power of two - November 23, 2022
Rabbits in forest - November 23, 2022
Shuffle an array - November 22, 2022
Base 7 - November 21, 2022
Minimum addition to make integer beautiful - November 21, 2022
Erect the fence - November 19, 2022
Number of digit one - November 17, 2022
Rectangle area - November 17, 2022
Count of matches in tournament - November 15, 2022
Number of zero filled subarrays - November 12, 2022
Count numbers with unique digits - November 11, 2022
Average value of even numbers that are divisible by three - November 8, 2022
Smallest good base - November 3, 2022
Optimal division - October 31, 2022
Pairs of songs with total durations divisible by 60 - October 31, 2022
Sum of number and its reverse - October 28, 2022
Count good numbers - October 27, 2022
Escape the ghosts - October 25, 2022
Set mismatch - October 23, 2022
Find missing observations - October 13, 2022
Shift 2d grid - October 13, 2022
Find positive integer solution for a given equation - October 13, 2022
Largest perimeter triangle - October 12, 2022
Palindrome number - October 4, 2022
Ugly number - October 4, 2022
Bulb switcher - September 27, 2022
Strictly palindromic number - September 27, 2022
Number of sub arrays with odd sum - September 18, 2022
Spiral matrix II - September 14, 2022
Elimination game - September 12, 2022
Robot bounded in circle - September 8, 2022
Count primes - September 5, 2022
Minimum moves to equal array elements II - September 3, 2022
Minimum moves to equal array elements - September 1, 2022
Clumsy factorial - September 1, 2022
Divide two integers - August 29, 2022
Sort the matrix diagonally - August 28, 2022
Power of three - August 24, 2022
Power of four - August 22, 2022
Find triangular sum of an array - August 16, 2022
String to integer atoi - August 16, 2022
Roman to integer - August 15, 2022
Prime number of set bits in binary representation - July 21, 2022
Set matrix zeroes - August 7, 2022
Spiral matrix - August 7, 2022
Detect squares - August 7, 2022
Pow(x, n) - August 7, 2022
Rotate image - August 7, 2022
Multiply strings - August 7, 2022
Poor pigs - August 6, 2022
Mirror reflection - August 4, 2022
Sum of two integers - July 31, 2022
Happy number - July 28, 2022
Plus one - July 23, 2022
