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Python函数递归练习

  • 2026-04-30 08:26:40
Python函数递归练习
题目：利用递归函数计算1到100的和。
方法一：倒序提取最后一个数，与前面一个函数相加，前面的函数提取n-1与n相加，依次直至最后加1，函数终止。
方法二：创建列表，利用列表切片和每次提取列表最大索引的元素，不断递归函数，直至返回1程序终止。
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  1. CONNECT:[ UseTime:0.001241s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
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  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000754s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001398s ]
  6. SELECT * FROM `set` [ RunTime:0.000565s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001629s ]
  8. SELECT * FROM `article` WHERE `id` = 486645 LIMIT 1 [ RunTime:0.010943s ]
  9. UPDATE `article` SET `lasttime` = 1778046878 WHERE `id` = 486645 [ RunTime:0.007117s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000618s ]
  11. SELECT * FROM `article` WHERE `id` < 486645 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.003226s ]
  12. SELECT * FROM `article` WHERE `id` > 486645 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001095s ]
  13. SELECT * FROM `article` WHERE `id` < 486645 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001694s ]
  14. SELECT * FROM `article` WHERE `id` < 486645 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004667s ]
  15. SELECT * FROM `article` WHERE `id` < 486645 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.025350s ]
0.233275s