Programming-skills - Related information

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    how to program to traverse the matrix in this way. for ease of understanding, I describe it this way, given a matrix 1 2 3 4 5 6 7 8 9 a b c d e f g I need to traverse the data in the lower left half of it, traversing diagonally first, followed by to...

  • How to pass in a class requires a value of the same type in another class?

    there is a User class whose method calculate () needs to use a member value in an instance of the external data class as the input source. In the User constructor, you need to pass in different data instances as parameters, and create different User cla...

  • MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
    MySQL Error : Disk full (/tmp/#sql-temptable-64f5-7c0781-9468.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
    MySQL Errno : 1021
    Message : Disk full (/tmp/#sql-temptable-64f5-7c0781-9468.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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