Data commit

Task/Convert-seconds-to-compound-duration/Rust/convert-seconds-to-compound-duration.rust

@@ -0,0 +1,46 @@
+use std::fmt;
+
+
+struct CompoundTime {
+    w: usize,
+    d: usize,
+    h: usize,
+    m: usize,
+    s: usize,
+}
+
+macro_rules! reduce {
+    ($s: ident, $(($from: ident, $to: ident, $factor: expr)),+) => {{
+        $(
+            $s.$to += $s.$from / $factor;
+            $s.$from %= $factor;
+        )+
+    }}
+}
+
+impl CompoundTime {
+    #[inline]
+    fn new(w: usize, d: usize, h: usize, m: usize, s: usize) -> Self{
+        CompoundTime { w: w, d: d, h: h, m: m, s: s, }
+    }
+
+    #[inline]
+    fn balance(&mut self) {
+        reduce!(self, (s, m, 60), (m, h, 60),
+                      (h, d, 24), (d, w, 7));
+    }
+}
+
+impl fmt::Display for CompoundTime {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}w {}d {}h {}m {}s",
+               self.w, self.d, self.h, self.m, self.s)
+    }
+}
+
+fn main() {
+    let mut ct = CompoundTime::new(0,3,182,345,2412);
+    println!("Before: {}", ct);
+    ct.balance();
+    println!("After: {}", ct);
+}