n children standing in a line. Each child is assigned a rating value given in the integer array
You are giving candies to these children subjected to the following requirements:
Return the minimum number of candies you need to have to distribute the candies to the children.
Input: ratings = [1,0,2] Output: 5 Explanation: You can allocate to the first, second and third child with 2, 1, 2 candies respectively.
Input: ratings = [1,2,2] Output: 4 Explanation: You can allocate to the first, second and third child with 1, 2, 1 candies respectively. The third child gets 1 candy because it satisfies the above two conditions.
n == ratings.length
1 <= n <= 2 * 104
0 <= ratings[i] <= 2 * 104