md5

问题 I'm running the following MD5 check on 500 million files to check for duplicates. The scripts taking forever to run and I was wondering how to speed it up. How could I speed it up? Could I use a try catch loop instead of contains to throw an error when the hash already exists instead? What would you all recommend? $folder = Read-Host -Prompt 'Enter a folder path' $hash = @{} $lineCheck = 0 Get-ChildItem $folder -Recurse | where {! $_.PSIsContainer} | ForEach-Object { $lineCheck++ Write-Host

问题 What is the time complexity of the MD5 algorithm? I couldn't find a definitive answer online. I think the complexity is O(n) but I'm not really sure. 回答1: O(n) as mentioned by DuBuisson and osgx in the comments. 来源： https://stackoverflow.com/questions/43625569/time-complexity-of-md5

来源： https://stackoverflow.com/questions/63790576/will-application-pass-fips-certification-if-we-use-md5-only-to-calculate-unique

来源： https://stackoverflow.com/questions/63401051/how-to-send-content-md5-header-in-the-presigned-url-request-of-node-js

来源： https://stackoverflow.com/questions/55601142/how-can-i-verify-the-git-installer-via-hash

来源： https://stackoverflow.com/questions/55601142/how-can-i-verify-the-git-installer-via-hash

来源： https://stackoverflow.com/questions/55070320/how-to-calculate-md5-of-a-file-using-boost

来源： https://stackoverflow.com/questions/9986971/converting-a-hexadecimal-digest-to-base64-in-ruby

来源： https://stackoverflow.com/questions/9986971/converting-a-hexadecimal-digest-to-base64-in-ruby

来源： https://stackoverflow.com/questions/39112096/calculate-md5-hash-of-a-large-file-using-javascript