what is the worst and best case run time for insertion sort and merge sort?

Ask Time：2019-11-15T06:59:02 Author：TheCodeLearner

Which of these are correct? worst and best case run time for insertion and merge sort?

insertion sort (best case): big O(n) or theta (n) (worst case):big O(n^2) or theta (n^2)?

merge sort (best case) : big O(n log n) or theta (n log n) (worst case) : big O (n log n) or theta (nlog n)?

Author:TheCodeLearner，eproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/58867807/what-is-the-worst-and-best-case-run-time-for-insertion-sort-and-merge-sort

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