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P8.java
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P8.java
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import java.util.*;
import java.io.*;
/*******************************************************
Following is the Interval class structure
class Interval {
int start, int finish;
Interval(int start, int finish) {
this.start = start;
this.finish = finish;
}
}
*******************************************************/
import java.util.List;
import java.util.ArrayList;
public class P8 {
public static List<Interval> mergeIntervals(Interval[] ins) {
ArrayList<Interval> stk = new ArrayList();
Arrays.sort(ins, (a, b) -> a.start - b.start);
stk.add(ins[0]);
for (int i = 1; i < ins.length; i++) {
Interval temp = stk.get(stk.size() - 1);
if (ins[i].start <= temp.finish) {
stk.remove(stk.size() - 1);
temp.finish = Math.max(ins[i].finish, temp.finish);
stk.add(temp);
} else {
stk.add(ins[i]);
}
}
return stk;
}
}