Data commit

Task/Box-the-compass/Go/box-the-compass.go

@@ -0,0 +1,67 @@
+package main
+
+import "fmt"
+
+// function required by task
+func degrees2compasspoint(h float32) string {
+    return compassPoint[cpx(h)]
+}
+
+// cpx returns integer index from 0 to 31 corresponding to compass point.
+// input heading h is in degrees.  Note this index is a zero-based index
+// suitable for indexing into the table of printable compass points,
+// and is not the same as the index specified to be printed in the output.
+func cpx(h float32) int {
+    x := int(h/11.25+.5) % 32
+    if x < 0 {
+        x += 32
+    }
+    return x
+}
+
+// printable compass points
+var compassPoint = []string{
+    "North",
+    "North by east",
+    "North-northeast",
+    "Northeast by north",
+    "Northeast",
+    "Northeast by east",
+    "East-northeast",
+    "East by north",
+    "East",
+    "East by south",
+    "East-southeast",
+    "Southeast by east",
+    "Southeast",
+    "Southeast by south",
+    "South-southeast",
+    "South by east",
+    "South",
+    "South by west",
+    "South-southwest",
+    "Southwest by south",
+    "Southwest",
+    "Southwest by west",
+    "West-southwest",
+    "West by south",
+    "West",
+    "West by north",
+    "West-northwest",
+    "Northwest by west",
+    "Northwest",
+    "Northwest by north",
+    "North-northwest",
+    "North by west",
+}
+
+func main() {
+    fmt.Println("Index  Compass point         Degree")
+    for i, h := range []float32{0.0, 16.87, 16.88, 33.75, 50.62, 50.63, 67.5,
+        84.37, 84.38, 101.25, 118.12, 118.13, 135.0, 151.87, 151.88, 168.75,
+        185.62, 185.63, 202.5, 219.37, 219.38, 236.25, 253.12, 253.13, 270.0,
+        286.87, 286.88, 303.75, 320.62, 320.63, 337.5, 354.37, 354.38} {
+        index := i%32 + 1 // printable index computed per pseudocode
+        fmt.Printf("%4d   %-19s %7.2f°\n", index, degrees2compasspoint(h), h)
+    }
+}