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34 lines
526 B
34 lines
526 B
package main |
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import "./student" |
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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 := []int{lib.RandIntBetween(-6, 20)} |
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args = append(args, -5, 0) |
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for i := 0; i < 20; i++ { |
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args = append(args, lib.RandIntBetween(2, 20)) |
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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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