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General Details
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Java
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Posted 57 Days Ago
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120 Views
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Received 1 Rating
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OddNumbers in Java
Description
This program displays all odd numbers between 1 and 49 (including 1 and 49) ... and displays the sum of all those odd numbers at the end. Less than 30 lines!
Technical
JCreator Lite, NetBeans, or any other Java IDE w/compiler, or use console
Source Code
Comments
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Nice, but here it is in scheme. Even shorter and better:
(define (output-odd n)
(cond
((zero? n) 0)
((odd? n) (begin (display n) (+ n (output-odd (- n 1)))))
(else (output-odd (- n 1)))))
(output-odd 49)
I can do something similar with even. I can also summarize both in one function.
This is the power of scheme:
(define (output kind n)
(cond
((zero? n) 0)
((kind n) (begin (display n) (+ n (output-odd (- n 1)))))
(else (output-odd (- n 1)))))
(output even? 49)
(output odd? 49)
The above 7 lines summarize both those Java programs with one function.
This is why learning other languages is great!
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