monotonic-array/src/main.rs


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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])
    }
}