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23 lines
741 B
23 lines
741 B
5 years ago
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## printrevcomb
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### Instructions
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Write a program that prints in descending order on a single line all unique combinations of three different digits so that the first digit is greater than the second and the second is greater than the third.
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These combinations are separated by a comma and a space.
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### Usage
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Here is an **incomplete** output :
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```console
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student@ubuntu:~/[[ROOT]]/printrevcomb$ go build
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student@ubuntu:~/[[ROOT]]/printrevcomb$ ./printrevcomb | cat -e
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987, 986, 985, 984, 983, 982, 981, 980, 976, ..., 310, 210$
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student@ubuntu:~/[[ROOT]]/printrevcomb$
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```
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`999` or `000` are not valid combinations because the digits are not different.
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`789` should not be shown because the first digit is not greater than the second.
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