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stl vector 函数
vector::crend() is a library function of "vector" header, it is used to get the first element of a vector from reverse ending, it returns a const reverse iterator pointing to the element preceding the first element (i.e. reverse ending) of a vector.
vector :: crend()是“ vector”头文件的库函数,用于从反向结尾获取向量的第一个元素,它返回一个const反向迭代器,指向第一个元素之前的元素(即反向结尾)向量。
It returns a const_reverse_iterator which is an iterator point to the constant content(vector), the const_reverse_itertator can be increased or decreased just like an iterator but it cannot be used to update/modify the vector content it points to.
它返回const_reverse_iterator ,它是指向常量content(vector)的迭代器,可以像迭代器一样增加或减少const_reverse_itertator ,但不能用于更新/修改其指向的向量内容。
Note: To use vector, include <vector> header.
注意:要使用向量,请包含<vector>标头。
Syntax of vector::crend() function
vector :: crend()函数的语法
vector::crend();
Parameter(s): none – It accepts nothing.
参数: 无 –不接受任何内容。
Return value: const_reverse_iterator – It returns a const reverse iterator pointing to the element preceding the first elements of the vector.
返回值: const_reverse_iterator –它返回一个const反向迭代器,指向向量的第一个元素之前的元素。
Example:
例:
Input: vector vector1{ 1, 2, 3, 4, 5 }; Function call: vector ::const_iterator crit; crit = vector1.crend()-1; cout< C++ program to demonstrate example of vector::crend() function Output first element is: 10 Reference: TOP Interview Coding Problems/Challenges Comments and Discussions Ad:Are you a blogger? Join our . Please enable JavaScript to view the
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stl vector 函数
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