Leetcode 1431. Kids With the Greatest Number of Candies
You are given a 2D integer array?items
?where?items[i] = [pricei, beautyi]
?denotes the?price?and?beauty?of an item respectively.
You are also given a?0-indexed?integer array?queries
. For each?queries[j]
, you want to determine the?maximum beauty?of an item whose?price?is?less than or equal?to?queries[j]
. If no such item exists, then the answer to this query is?0
.
Return?an array?answer
?of the same length as?queries
?where?answer[j]
?is the answer to the?jth
?query.
?
Example 1:
Input: items = [[1,2],[3,2],[2,4],[5,6],[3,5]],?
queries = [1,2,3,4,5,6]
Output: [2,4,5,5,6,6]
Explanation:- For queries[0]=1, [1,2] is the only item which has price <= 1. Hence, the answer for this query is 2. - For queries[1]=2, the items which can be considered are [1,2] and [2,4]. ?The maximum beauty among them is 4. - For queries[2]=3 and queries[3]=4, the items which can be considered are [1,2], [3,2], [2,4], and [3,5]. ?The maximum beauty among them is 5. - For queries[4]=5 and queries[5]=6, all items can be considered. ?Hence, the answer for them is the maximum beauty of all items, i.e., 6.
Example 2:
Input: items = [[1,2],[1,2],[1,3],[1,4]],?
queries = [1]
Output: [4]
Explanation: The price of every item is equal to 1, so we choose the item with the maximum beauty 4. Note that multiple items can have the same price and/or beauty. ?
Example 3:
Input: items = [[10,1000]], queries = [5]Output: [0]Explanation:No item has a price less than or equal to 5, so no item can be chosen. Hence, the answer to the query is 0.
?
Constraints:
1 <= items.length, queries.length <= 105
items[i].length == 2
1 <= pricei, beautyi, queries[j] <= 10
Easy 題目,直接遍歷一下即可;
Runtime:?1 ms, faster than?91.92%?of?Java?online submissions for?Kids With the Greatest Number of Candies.
Memory Usage:?42.5 MB, less than?32.91%?of?Java?online submissions for?Kids With the Greatest Number of Candies.