Solved binary search iteratively in C++

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Fixed recursive binary search in Python

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Solved binary search iteratively in Python

Signed-off-by: Ionut Radu <ihonius@gmail.com>
[binary_search_rec.py] Fixed coding style

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Solved binary search iteratively in java

Signed-off-by: Ionut Radu <ihonius@gmail.com>