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fn main() { println!("Hello, world!"); let tests = [ (vec![1,2,10,5,7], true), (vec![2,3,1,2], false), (vec![1,1,1], false) ]; for test in tests { println!("{:?} is {} should be {}", test.0, Solution::can_be_increasing(test.0.clone()), test.1); } } struct Solution; impl Solution { pub fn can_be_increasing(nums: Vec<i32>) -> bool { nums.windows(2).filter(|x| x[0] < x[1]).count() + 2 == nums.len() } }