较通用的选择排序，类似qsort
较通用的选择排序，类似qsort

guonaihong/exercise,guonaihong/exercise,guonaihong/recycle_bin,guonaihong/recycle_bin,guonaihong/recycle_bin,guonaihong/recycle_bin,guonaihong/exercise,guonaihong/exercise,guonaihong/exercise,guonaihong/recycle_bin,guonaihong/recycle_bin