# [ACCEPTED]-C++ - interval tree implementation-interval-tree

I had exactly the same need. I couldn't 7 find any suitable (simple, modern, portable) implementations, so 6 I used a python implementation by Brent Pedersen as a guide and wrote a barebones 5 C++ version. The IntervalTree behaves like a standard 4 STL container, with some caveats due to 3 its simplicity (no iterators, for instance). You 2 use it like this ("T" is an arbitrary 1 type):

```
vector<Interval<T> > intervals;
// ... make intervals!
IntervalTree<T> tree(intervals);
```

And you query it like this:

```
vector<Interval<T> > results;
tree.findContained(start, stop, results);
// results now contains Intervals which are fully contained in the query interval
results.clear();
tree.findOverlapping(start, stop, results);
// results now contains Intervals which overlap the query interval
```

There appears to be one in the NCBI C++ Toolkit.

Jury's still out 4 on whether it's "good," though 3 (and even whether it's template-driven; I'm 2 still somewhat new to C++, so I'm not entirely 1 sure that it is, but I suspect as much).

I uploaded simple implementation of Interval 1 Tree to github: https://github.com/coolsoftware/ITree

Look class itree in itree.h.

if you don't mind translating a c# implementation 2 to c++, goto http://code.google.com/p/intervaltree/ .based on an avl self balancing 1 tree.

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