Data commit

Task/Convert-seconds-to-compound-duration/Swift/convert-seconds-to-compound-duration.swift

@@ -0,0 +1,22 @@
+func duration (_ secs:Int) -> String {
+    if secs <= 0 { return "" }
+    let units = [(604800,"wk"), (86400,"d"), (3600,"hr"),  (60,"min")]
+    var secs = secs
+    var result = ""
+    for (period, unit) in units {
+        if secs >= period {
+            result +=  "\(secs/period) \(unit), "
+            secs = secs % period
+        }
+    }
+    if secs == 0 {
+        result.removeLast(2) // remove ", "
+    } else {
+        result += "\(secs) sec"
+    }
+    return result
+}
+
+print(duration(7259))
+print(duration(86400))
+print(duration(6000000))