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g0901_1000.s0911_online_election.readme.md Maven / Gradle / Ivy

911\. Online Election

Medium

You are given two integer arrays `persons` and `times`. In an election, the ith vote was cast for `persons[i]` at time `times[i]`.

For each query at a time `t`, find the person that was leading the election at time `t`. Votes cast at time `t` will count towards our query. In the case of a tie, the most recent vote (among tied candidates) wins.

Implement the `TopVotedCandidate` class:

*   `TopVotedCandidate(int[] persons, int[] times)` Initializes the object with the `persons` and `times` arrays.
*   `int q(int t)` Returns the number of the person that was leading the election at time `t` according to the mentioned rules.

**Example 1:**

**Input** ["TopVotedCandidate", "q", "q", "q", "q", "q", "q"] [[[0, 1, 1, 0, 0, 1, 0], [0, 5, 10, 15, 20, 25, 30]], [3], [12], [25], [15], [24], [8]]

**Output:** [null, 0, 1, 1, 0, 0, 1]

**Explanation:** TopVotedCandidate topVotedCandidate = new TopVotedCandidate([0, 1, 1, 0, 0, 1, 0], [0, 5, 10, 15, 20, 25, 30]); topVotedCandidate.q(3); // return 0, At time 3, the votes are [0], and 0 is leading. topVotedCandidate.q(12); // return 1, At time 12, the votes are [0,1,1], and 1 is leading. topVotedCandidate.q(25); // return 1, At time 25, the votes are [0,1,1,0,0,1], and 1 is leading (as ties go to the most recent vote.) topVotedCandidate.q(15); // return 0 topVotedCandidate.q(24); // return 0 topVotedCandidate.q(8); // return 1

**Constraints:**

*   `1 <= persons.length <= 5000`
*   `times.length == persons.length`
*   `0 <= persons[i] < persons.length`
*   0 <= times[i] <= 109
*   `times` is sorted in a strictly increasing order.
*   times[0] <= t <= 109
*   At most 104 calls will be made to `q`.