LeetCode 3168: Minimum Number of Chairs in a Waiting Room Solution
Master LeetCode problem 3168 (Minimum Number of Chairs in a Waiting Room), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
3168. Minimum Number of Chairs in a Waiting Room
Problem Explanation
Explanation:
- We can simulate the events in the waiting room by maintaining a count of people currently in the room.
- Whenever a person enters, we increment the count, and when a person leaves, we decrement the count.
- The minimum number of chairs needed is the maximum count of people in the room at any given time.
:
Solution Code
class Solution {
public int minChairs(String s) {
int count = 0;
int maxCount = 0;
for(char c : s.toCharArray()) {
if(c == 'E') {
count++;
maxCount = Math.max(maxCount, count);
} else {
count--;
}
}
return maxCount;
}
}Try It Yourself
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