1 files changed, 20 insertions, 0 deletions
diff --git a/monotonic-array/src/main.rs b/monotonic-array/src/main.rs
new file mode 100644
index 0000000..eeb1b2e
--- /dev/null
+++ b/monotonic-array/src/main.rs
@@ -0,0 +1,20 @@
+fn main() {
+    println!("Hello, world!");
+    let tests = [
+        (vec![1,2,2,3],true),
+        (vec![6,5,4,4],true),
+        (vec![1,3,2], false)
+    ];
+
+    for test in tests {
+        println!("{:?} is {} should be {}", test.0, Solution::is_monotonic(test.0.clone()),
+        test.1);
+    }
+}
+struct Solution;
+impl Solution {
+    pub fn is_monotonic(nums: Vec<i32>) -> bool {
+        nums.windows(2).all(|x| x[0] >= x[1]) ||
+        nums.windows(2).all(|x| x[0] <= x[1])
+    }
+}