向量的使用（Use of vectors）.doc

向量的使用（Use of vectors） Such as: The vector int * a. Int b = 5; A.p ush_back (b); / / there is a detailed solution below this function Cout a [0]; / / / output is 5 Push_back adds a data at the end of the array 2. Pop_back removes the last data from the array 3. At the data of the number position Begin to get the pointer to the head of the array 5. End gets the pointer to the last cell of the array + 1 6. Front gets the reference to the array header 7. Back gets the reference to the last unit of the array 8. Max_size gets the maximum size of a vector 9. Capacity current vector distribution size The size of the current usage data 11. Resize changes the size of the current use of the data, and if it is larger than the current one, the default value is populated 12. Reserve changes the size of the space allocated for current vecotr 13. Erase the data item that the pointer points to 14. Clear empties the current vector 15. Rbegin returns the beginning of the vector backward (in fact, the original end - 1). 16. Rend returns the end pointer of the vector reversal construct (actually the original beg-1) 17. Empty determines whether vector is empty 18. Swap data with another vector 3.2 detailed function implementation: the vector int c. C.c. Lear () removes all data in the container. C.e mpty () determines whether the container is empty. C.e rase (pos) deletes data from pos location C.e rase (beg, end) deletes data from the [beg, end] interval C.f ront () returns the first data. Ci. nsert (pos, elem) inserts an elem copy at pos location C.p op_back () deletes the last data. C.p ush_back (elem) adds a data at the end. C.r esize (num) resets the size of the container C.s. ize the number of actual data in the container. C.b egin () returns an iterator that points to the first element of the container C.e nd () returns an iterator that points to the last element of the container The use of vector vector Vector containers use dynamic array storage and management objects. Beca