46 lines
940 B
Go
46 lines
940 B
Go
package main
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import (
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"bytes"
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"fmt"
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"math/rand"
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"time"
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)
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const (
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nPts = 100
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rMin = 10
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rMax = 15
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)
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func main() {
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rand.Seed(time.Now().Unix())
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span := rMax + 1 + rMax
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rows := make([][]byte, span)
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for r := range rows {
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rows[r] = bytes.Repeat([]byte{' '}, span*2)
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}
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u := 0 // count unique points
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min2 := rMin * rMin
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max2 := rMax * rMax
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for n := 0; n < nPts; {
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x := rand.Intn(span) - rMax
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y := rand.Intn(span) - rMax
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// x, y is the generated coordinate pair
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rs := x*x + y*y
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if rs < min2 || rs > max2 {
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continue
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}
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n++ // count pair as meeting condition
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r := y + rMax
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c := (x + rMax) * 2
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if rows[r][c] == ' ' {
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rows[r][c] = '*'
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u++
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}
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}
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for _, row := range rows {
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fmt.Println(string(row))
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}
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fmt.Println(u, "unique points")
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}
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