struct Solution;
impl Solution {
fn increasing_triplet(nums: Vec<i32>) -> bool {
let mut dp: Vec<i32> = vec![];
for x in nums {
if let Err(i) = dp.binary_search(&x) {
if i == dp.len() {
dp.push(x)
} else {
dp[i] = x;
}
}
if dp.len() == 3 {
return true;
}
}
false
}
}
#[test]
fn test() {
let nums = vec![1, 2, 3, 4, 5];
let res = true;
assert_eq!(Solution::increasing_triplet(nums), res);
let nums = vec![5, 4, 3, 2, 1];
let res = false;
assert_eq!(Solution::increasing_triplet(nums), res);
}