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MinPlatform.java
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39 lines (32 loc) · 1.04 KB
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import java.util.*;
public class Main {
public static int findPlatformOptimized(int[] arr, int[] dep, int n)
{
int count = 0, maxPlatforms = 0;
int maxDepartureTime = dep[0];
for (int i = 1; i < n; i++) {
maxDepartureTime = Math.max(maxDepartureTime, dep[i]);
}
List<Integer> v = new ArrayList<>(maxDepartureTime + 2);
for (int i = 0; i < maxDepartureTime + 2; i++) {
v.add(0);
}
for (int i = 0; i < n; i++) {
v.set(arr[i], v.get(arr[i]) + 1);
v.set(dep[i] + 1, v.get(dep[i] + 1) - 1);
}
for (int i = 0; i <= maxDepartureTime + 1; i++) {
count += v.get(i);
maxPlatforms = Math.max(maxPlatforms, count);
}
return maxPlatforms;
}
// Driver Code
public static void main(String[] args)
{
int[] arr = { 100, 300, 600 };
int[] dep = { 900, 400, 500 };
int n = arr.length;
System.out.println(findPlatformOptimized(arr, dep, n));
}
}