Always returns start and end nodes when a path is found in astar
Merge pull request #21 from pierredavidbelanger/fix_empty_result_astar

Always returns start and end nodes when a path is found in astar
it makes sense,  thanks!
indent
Update sort_demo.cpp

added the head file for built-in function rand()
Merge pull request #23 from jackeylu/patch-1

Update sort_demo.cpp
fix bugs in astar algorithm
optimize astar algorithm with an extra array for fast testing openset
Merge branch 'develop'
Merge branch 'master' of https://github.com/xtaci/algorithms
optimize astar alg, added verbose comments
Merge branch 'master' into develop
suffix_tree
makefile
support c++0x standard
add suffix array
Merge pull request #26 from UsingtcNower/master

Add suffix array algorithm
update readme.md
Merge branch 'develop'
Merge branch 'master' into develop
update README.md