write_chars

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Main Page → Exercises → Python → Solve an Exercise

Language/Type: Python recursion recursive programming

Write a recursive function named write_chars that accepts an integer parameter n and that prints out a total of n characters. The middle character of the output should always be an asterisk ("*"). If you are asked to write out an even number of characters, then there will be two asterisks in the middle ("**"). Before the asterisk(s) you should write out less-than characters ("<"). After the asterisk(s) you should write out greater-than characters (">"). Your function should raise a ValueError if it is passed a value less than 1. For example, the following calls produce the following output:

Call	Output
`write_chars(1)`	`*`
`write_chars(2)`	`**`
`write_chars(3)`	`<*>`
`write_chars(4)`	`<**>`
`write_chars(5)`	`<<*>>`
`write_chars(6)`	`<<**>>`
`write_chars(7)`	`<<<*>>>`
`write_chars(8)`	`<<<**>>>`

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write_chars