Data update

Task/Loops-Nested/Rust/loops-nested.rs

@@ -0,0 +1,22 @@
+use rand::Rng;
+
+extern crate rand;
+
+fn main() {
+    let mut matrix = [[0u8; 10]; 10];
+    let mut rng = rand::thread_rng();
+
+    for row in matrix.iter_mut() {
+        for item in row.iter_mut() {
+            *item = rng.gen_range(0, 21);
+        }
+    }
+
+    'outer: for row in matrix.iter() {
+        for &item in row.iter() {
+            print!("{:2} ", item);
+            if item == 20 { break 'outer }
+        }
+        println!();
+    }
+}