๐ป Sudoku Solver (by the Prime Minister of Singapore, Hsien Loong Lee) ๐ ๐งฉ ๐ฉโ๐ป
So, in 2015, the Prime Minister of Singapore, Hsien Loong Lee, posted a C language sudoku solver to leetcode.com and I can see a lot of bitwise manipulation in the code. I think it is worth our time to take the solution to pieces and see how it runs so fast. ...