移除性算法

remove(begin,end,value);
remove_if(begin,end,op);

复制过程中移除:
remove_copy_if(sourcebeg,source end,destbegin,op);
remove_copy(sourcebeg,sourceend,destbegin,value);

移除重复元素:
unique(beg,end);
unique(beg,end,op);

复制过程中移除:
unique_copy(sourcebeg,source end,destbegin,value);
unique_end(sourcebeg,source end,destbegin,op);