Time limit exceeded leetcode

🐛 Bug Report 题345出现Time Limit Exceeded，总是无法提交测试或者提交答案。而别的题可以提交成功。 To Reproduce Steps to reproduce the behavior. Extension Output • Sending code to judge • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result ...... • Waiting for judge result • Waiting for judge result × Time Limit Exceeded × Your Input: "hello" × Expected Answer: "holle" × Stdout:

This often confuses people. A friend of mine recently told me: "I ran my backtracking solution on Leetcode. It said - Time Limit Exceeded. It looks like backtracking is too slow, I should find another way to solve this problem." What?! Are you serious? Do you know how Leetcode's "Time Limit Exceeded" was probably decided? At some point, Leetcode engineers probably thought - we can't keep code running forever on our servers, it would increase our server costs. Let's set a time limit. And that's it. You are judging your solution based on a limit they set - so that their servers can avoid costs. To be fair, it's not Leetcode's fault. If I was in their place, I would probably do the same. I wouldn't want users running code forever. But you, as the user, shouldn't consider this a failure. Specially if you're preparing for interviews. In an interview, if your backtracking solution takes a while, that's ok. Many recursive solutions do. Specially with larger input. Interviewers know this, and they also know that most companies don't use backtracking in their actual work. Specially not on random input sizes. So they won't care if your backtracking solution is exceeding a fixed time limit! They might care about the time and space complexity, but that's it! This is yet another reason I recommend not running code on Leetcode. Just run it on an IDE and practice verifying the code yourself. Create your own test cases. It's much closer to an actual interview scenario.

If your solution is judged Time Limit Exceeded, it could be one of the following reasons: • Your code has an underlying infinite loop. • Your algorithm is too slow and has a high time complexity. • The data structure you returned is in an invalid state. For example, a linked list that contains a cycle. On the other hand, Timeout simply means the server queue is busy and could not process your submission for the time being. Please wait for about 10 seconds and submit again.

If your solution is judged Time Limit Exceeded, it could be one of the following reasons: • Your code has an underlying infinite loop. • Your algorithm is too slow and has a high time complexity. • The data structure you returned is in an invalid state. For example, a linked list that contains a cycle. On the other hand, Timeout simply means the server queue is busy and could not process your submission for the time being. Please wait for about 10 seconds and submit again.

This often confuses people. A friend of mine recently told me: "I ran my backtracking solution on Leetcode. It said - Time Limit Exceeded. It looks like backtracking is too slow, I should find another way to solve this problem." What?! Are you serious? Do you know how Leetcode's "Time Limit Exceeded" was probably decided? At some point, Leetcode engineers probably thought - we can't keep code running forever on our servers, it would increase our server costs. Let's set a time limit. And that's it. You are judging your solution based on a limit they set - so that their servers can avoid costs. To be fair, it's not Leetcode's fault. If I was in their place, I would probably do the same. I wouldn't want users running code forever. But you, as the user, shouldn't consider this a failure. Specially if you're preparing for interviews. In an interview, if your backtracking solution takes a while, that's ok. Many recursive solutions do. Specially with larger input. Interviewers know this, and they also know that most companies don't use backtracking in their actual work. Specially not on random input sizes. So they won't care if your backtracking solution is exceeding a fixed time limit! They might care about the time and space complexity, but that's it! This is yet another reason I recommend not running code on Leetcode. Just run it on an IDE and practice verifying the code yourself. Create your own test cases. It's much closer to an actual interview scenario.

🐛 Bug Report 题345出现Time Limit Exceeded，总是无法提交测试或者提交答案。而别的题可以提交成功。 To Reproduce Steps to reproduce the behavior. Extension Output • Sending code to judge • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result ...... • Waiting for judge result • Waiting for judge result × Time Limit Exceeded × Your Input: "hello" × Expected Answer: "holle" × Stdout:

This often confuses people. A friend of mine recently told me: "I ran my backtracking solution on Leetcode. It said - Time Limit Exceeded. It looks like backtracking is too slow, I should find another way to solve this problem." What?! Are you serious? Do you know how Leetcode's "Time Limit Exceeded" was probably decided? At some point, Leetcode engineers probably thought - we can't keep code running forever on our servers, it would increase our server costs. Let's set a time limit. And that's it. You are judging your solution based on a limit they set - so that their servers can avoid costs. To be fair, it's not Leetcode's fault. If I was in their place, I would probably do the same. I wouldn't want users running code forever. But you, as the user, shouldn't consider this a failure. Specially if you're preparing for interviews. In an interview, if your backtracking solution takes a while, that's ok. Many recursive solutions do. Specially with larger input. Interviewers know this, and they also know that most companies don't use backtracking in their actual work. Specially not on random input sizes. So they won't care if your backtracking solution is exceeding a fixed time limit! They might care about the time and space complexity, but that's it! This is yet another reason I recommend not running code on Leetcode. Just run it on an IDE and practice verifying the code yourself. Create your own test cases. It's much closer to an actual interview scenario.

If your solution is judged Time Limit Exceeded, it could be one of the following reasons: • Your code has an underlying infinite loop. • Your algorithm is too slow and has a high time complexity. • The data structure you returned is in an invalid state. For example, a linked list that contains a cycle. On the other hand, Timeout simply means the server queue is busy and could not process your submission for the time being. Please wait for about 10 seconds and submit again.

🐛 Bug Report 题345出现Time Limit Exceeded，总是无法提交测试或者提交答案。而别的题可以提交成功。 To Reproduce Steps to reproduce the behavior. Extension Output • Sending code to judge • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result • Waiting for judge result ...... • Waiting for judge result • Waiting for judge result × Time Limit Exceeded × Your Input: "hello" × Expected Answer: "holle" × Stdout:

This often confuses people. A friend of mine recently told me: "I ran my backtracking solution on Leetcode. It said - Time Limit Exceeded. It looks like backtracking is too slow, I should find another way to solve this problem." What?! Are you serious? Do you know how Leetcode's "Time Limit Exceeded" was probably decided? At some point, Leetcode engineers probably thought - we can't keep code running forever on our servers, it would increase our server costs. Let's set a time limit. And that's it. You are judging your solution based on a limit they set - so that their servers can avoid costs. To be fair, it's not Leetcode's fault. If I was in their place, I would probably do the same. I wouldn't want users running code forever. But you, as the user, shouldn't consider this a failure. Specially if you're preparing for interviews. In an interview, if your backtracking solution takes a while, that's ok. Many recursive solutions do. Specially with larger input. Interviewers know this, and they also know that most companies don't use backtracking in their actual work. Specially not on random input sizes. So they won't care if your backtracking solution is exceeding a fixed time limit! They might care about the time and space complexity, but that's it! This is yet another reason I recommend not running code on Leetcode. Just run it on an IDE and practice verifying the code yourself. Create your own test cases. It's much closer to an actual interview scenario.