想要随机交换多位数的数字 [英] Want to swap digits of multiple digit num randomly

问题描述

如果我有一个四位数的数字，例如： - 1234我将像智慧3241一样随机交换，即以任何顺序....不要反向???



我尝试了什么：



i已经尝试过精神但没有办法写这个

解决方案

忘记他们是数字。如果是随机字母怎么办？你会做什么？



提示：通过随机选择一个成员并将其移动到新数组，将一个数组映射到另一个数组。

您需要解决的问题：


• 如何随机选择一个角色
• 如何不多次挑选同一个角色。

拿一张纸纸张，铅笔和练习。

您不需要直接获得算法。

请注意您遵循的步骤，将其作为一个程序，改进以适应特定于计算机的帐户部分。



- 学习一种或多种分析方法可能对您有帮助， EW Djikstra自上而下的方法是一个良好的开端。

https：// en.wikipedia.org/wiki/Top-down_and_bottom-up_design [ ^ ]

https://en.wikipedia.org/wiki/Structured_programming [ ^ ]

https://en.wikipedia.org/wiki/Edsger_W._Dijkstra [ ^ ]

https://www.cs.utexas.edu/users/EWD/ewd03xx/EWD316.PDF [ ^

Like if i have a four digit number eg:- 1234 i would be swaped randomly like wise 3241 i.e in any order....not to be reverse???

What I have tried:

i have tried mentally but not get any way to write this

解决方案

Forget about them being numbers. What if it were for random letters? What would you do?

Hint: map one array to another, by randomly selecting a member and moving it to the new array.

Problem for you to solve:

• How to randomly pick a character
• How to not pick the same character more than once.

Take a sheet of paper, a pencil and practice.
You don't need to get directly an algorithm.
Note the steps you follow, make it a procedure, refine to take into account parts specific to computers.

- Learning one or more analyze methods may help you, E.W. Djikstra top-Down method is a good start.
https://en.wikipedia.org/wiki/Top-down_and_bottom-up_design[^]
https://en.wikipedia.org/wiki/Structured_programming[^]
https://en.wikipedia.org/wiki/Edsger_W._Dijkstra[^]
https://www.cs.utexas.edu/users/EWD/ewd03xx/EWD316.PDF[^]

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