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674. Longest Continuous Increasing Subsequence

Given an unsorted array of integers, find the length of longest continuous increasing subsequence (subarray).

Example 1:

Input: [1,3,5,4,7]
Output: 3
Explanation: The longest continuous increasing subsequence is [1,3,5], its length is 3. 
Even though [1,3,5,7] is also an increasing subsequence, it's not a continuous one where 5 and 7 are separated by 4. 

Example 2:

Input: [2,2,2,2,2]
Output: 1
Explanation: The longest continuous increasing subsequence is [2], its length is 1.

Note: Length of the array will not exceed 10,000.

Solutions (Rust)

1. Solution

impl Solution {
    pub fn find_length_of_lcis(nums: Vec<i32>) -> i32 {
        let mut i = 0;
        let mut max_len = 0;

        for j in 1..=nums.len() {
            if j == nums.len() || nums[j] <= nums[j - 1] {
                max_len = max_len.max(j - i);
                i = j;
            }
        }

        max_len as i32
    }
}