add rust solution for task 1

1 files changed, 22 insertions, 0 deletions

diff --git a/challenge-066/steven-wilson/rust/ch-1.rs b/challenge-066/steven-wilson/rust/ch-1.rs
new file mode 100644
index 0000000000..2303f09f9d
--- /dev/null
+++ b/challenge-066/steven-wilson/rust/ch-1.rs
@@ -0,0 +1,22 @@
+fn main() {
+    println!("5 / 2 = {}", divide( 5, 2 ));
+    println!("-5 / 2 = {}", divide( -5, 2 ));
+    println!("-5 / -2 = {}", divide( -5, -2 ));
+}
+
+fn divide ( m: i32, n: i32) -> i32 {
+    let mut a = m.abs();
+    let b = n.abs();
+    let mut q = 0;
+    while a >= b {
+        q += 1;
+        a -= b;
+    }
+    if ( m < 0  &&  n > 0 )  ||  ( n < 0  &&  m > 0 ) {
+        q *= -1;
+        if a != 0 {
+            q -= 1;
+        }
+    }
+    q
+}