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36 lines
506 B
36 lines
506 B
package main |
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import ( |
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"./student" |
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"github.com/01-edu/public/go/lib" |
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) |
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func collatzCountdown(start int) int { |
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if start <= 0 { |
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return -1 |
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} |
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steps := 0 |
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for start != 1 { |
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if start%2 == 0 { |
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start = start / 2 |
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} else { |
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start = 3*start + 1 |
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} |
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steps++ |
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} |
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return steps |
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} |
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func main() { |
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args := append(lib.MultRandIntBetween(2, 20), |
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lib.RandIntBetween(-6, 20), |
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-5, |
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0, |
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) |
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for _, v := range args { |
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lib.Challenge("CollatzCountdown", student.CollatzCountdown, collatzCountdown, v) |
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} |
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}
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