1604. Alert Using Same Key-Card Three or More Times in a One Hour Period
https://leetcode.com/problems/alert-using-same-key-card-three-or-more-times-in-a-one-hour-period
Description
LeetCode company workers use key-cards to unlock office doors. Each time a worker uses their key-card, the security system saves the worker's name and the time when it was used. The system emits an alert if any worker uses the key-card three or more times in a one-hour period.
You are given a list of strings keyName
and keyTime
where [keyName[i], keyTime[i]]
corresponds to a person's name and the time when their key-card was used in a single day.
Access times are given in the 24-hour time format "HH:MM", such as "23:51"
and "09:49"
.
Return a list of unique worker names who received an alert for frequent keycard use. Sort the names in ascending order alphabetically.
Notice that "10:00"
- "11:00"
is considered to be within a one-hour period, while "22:51"
- "23:52"
is not considered to be within a one-hour period.
Example 1:
**Input:** keyName = ["daniel","daniel","daniel","luis","luis","luis","luis"], keyTime = ["10:00","10:40","11:00","09:00","11:00","13:00","15:00"]
**Output:** ["daniel"]
**Explanation:** "daniel" used the keycard 3 times in a one-hour period ("10:00","10:40", "11:00").
Example 2:
**Input:** keyName = ["alice","alice","alice","bob","bob","bob","bob"], keyTime = ["12:01","12:00","18:00","21:00","21:20","21:30","23:00"]
**Output:** ["bob"]
**Explanation:** "bob" used the keycard 3 times in a one-hour period ("21:00","21:20", "21:30").
Example 3:
**Input:** keyName = ["john","john","john"], keyTime = ["23:58","23:59","00:01"]
**Output:** []
Example 4:
**Input:** keyName = ["leslie","leslie","leslie","clare","clare","clare","clare"], keyTime = ["13:00","13:20","14:00","18:00","18:51","19:30","19:49"]
**Output:** ["clare","leslie"]
Constraints:
1 <= keyName.length, keyTime.length <= 105
keyName.length == keyTime.length
keyTime[i]
is in the format "HH:MM".[keyName[i], keyTime[i]]
is unique.1 <= keyName[i].length <= 10
keyName[i] contains only lowercase English letters.
ac
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