Write a Program to Find Maximum Population Year

# 1854. Maximum Population Year

You are given a 2D integer array logs where each logs[i] = [birthi, deathi] indicates the birth and death years of the ith person.

The population of some year x is the number of people alive during that year. The ith person is counted in year x’s population if x is in the inclusive range [birthi, deathi – 1]. Note that the person is not counted in the year that they die.

Return the earliest year with the maximum population.

### Example 1:
```
Input: logs = [[1993,1999],[2000,2010]]
Output: 1993
Explanation: The maximum population is 1, and 1993 is the earliest year with this population.
```

### Example 2:
```
Input: logs = [[1950,1961],[1960,1971],[1970,1981]]
Output: 1960
Explanation: 
The maximum population is 2, and it had happened in years 1960 and 1970.
The earlier year between them is 1960.
 ```

Constraints:
```
1 <= logs.length <= 100
1950 <= birthi < deathi <= 2050
```

/**
 * @param {number[][]} logs
 * @return {number}
 */
var maximumPopulation = function(logs) {
    const intersectCount = new Array(101).fill(0);

    logs.forEach(person => {
        intersectCount[person[0] - 1950]++;
        intersectCount[person[1] - 1950]--;
    });

    let maxIntersect = 0;
    for (let i = 1; i < intersectCount.length; i++) {
        intersectCount[i] += intersectCount[i - 1];

        if(intersectCount[i] > intersectCount[maxIntersect]) maxIntersect = i;
    }
    return 1950 + maxIntersect;
};