- find adjacent 1s in an integer matrix
- find duplicated number in an array contains n numbers ranging from 0 to n-2 | test
- find the best meetup point for all given points | test
- find the closest k points to a given point
- find the maximum sum of sequence in an integer array | test
- find the median in an integer array | test
- find the first available parking spot | test | solution
- find the second largest in an array | test
- find the single integer in an array where all other elements appear twice
- place N queens on NxN chessboard so that they can't attack each other | test | java
- sum of matrix diagonal items
- basic regular expression | test | java | js
- compress/decompress string | test
- convert string to integer | test
- find palindrome in string | test
- eval mathematical expressions (2-stack without parentheses grouping) | test
- find the longest subsequence in a string | test
- find the number of occurrences of the most frequent substring in a string | test
- justify a line of string text | test
- read link | test | js
- search trie | test
- reverse string | test
- reverse words | test
- sort array | test