leetCode 18 - 4Sum (Sort First then Two Cursors) | JSer - algorithm & JavaScript
leetCode 18 - 4Sum
List without order actually could not be improved too much in most cases, let's consider sorting before doing anything. and always remember to try Two Cursors
This Problem is the same as 3Sum, please refer to the other video here : • leetCode 15 - 3Sum (Sort First then T...
You can find my solution on github: https://github.com/JSerZANP/leetCode_...
Hi I'm a JavaScript engineer who is not good at algorithms,
and currently practicing leetCode online. If you are interested, maybe we can learn together.