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Insert_Interval.java
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48 lines (39 loc) · 1.3 KB
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Given a set of non-overlapping intervals, insert a new interval into the
intervals (merge if necessary).
You may assume that the intervals were initially sorted according to their
start times.
Example 1:
Given intervals [1,3],[6,9], insert and merge [2,5] in as [1,5],[6,9].
Example 2:
Given [1,2],[3,5],[6,7],[8,10],[12,16], insert and merge [4,9] in
as [1,2],[3,10],[12,16].
This is because the new interval [4,9] overlaps with [3,5],[6,7],[8,10].
/**
* Definition for an interval.
* public class Interval {
* int start;
* int end;
* Interval() { start = 0; end = 0; }
* Interval(int s, int e) { start = s; end = e; }
* }
*/
public class Solution {
public ArrayList<Interval> insert(ArrayList<Interval> intervals,
Interval newInterval) {
Interval temp = newInterval;
ArrayList<Interval> lst = new ArrayList<Interval>();
for(Interval i : intervals) {
if(i.end < temp.start) {
lst.add(i);
} else if(i.start > temp.end){
lst.add(temp);
temp = i;
} else {
temp = new Interval(Math.min(temp.start, i.start),
Math.max(temp.end, i.end));
}
}
lst.add(temp);
return lst;
}
}