Leetcode, algorithms, data structures... There's general agreement that these problems don't really reflect what a software engineer does day to day (depends, but that's usually the case).

This algorithm is designed to detect cycles in a linked list, but it can also be applied to this problem since the repeated number effectively creates a cycle in the array. Initialize two pointers, ...

Both list.sort() and sorted() have a key parameter to specify a function (or other callable) to be called on each list element prior to making comparisons. Initialize two pointers, left at the ...

State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen, Shenzhen 518055, China ...