Method next_greater

196-next-greater-element-i.rs:5–16

(num: i32, nums2: &[i32])

impl Solution {
    pub fn next_greater_element(nums1: Vec<i32>, nums2: Vec<i32>) -> Vec<i32> {
        pub fn next_greater(num: i32, nums2: &[i32]) -> i32 {
            let mut flag = false;
            for i in nums2 {
                if i == &num {
                    flag = true;
                }
                if flag == true && i > &num {
                    return *i;
                }
            }
            return -1;
        }
        nums1.iter().map(|num|next_greater(*num, &nums2)).collect::<Vec<i32>>()
    }
}