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tao363 2022-12-19 21:48:20 +08:00
parent bbbed5b14b
commit fe7564d54d
1 changed files with 9 additions and 0 deletions
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9
codes/cpp/chapter_stack_and_queue/array_stack.cpp
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@ -29,6 +29,9 @@ public:
/* 出栈 */ /* 出栈 */
int pop() { int pop() {
if(stack.empty()){
throw out_of_range("栈为空,不能执行: pop()函数");
}
int oldTop = stack.back(); int oldTop = stack.back();
stack.pop_back(); stack.pop_back();
return oldTop; return oldTop;
@ -36,11 +39,17 @@ public:
/* 访问栈顶元素 */ /* 访问栈顶元素 */
int top() { int top() {
if(stack.empty()){
throw out_of_range("栈为空,不能执行: top()函数");
}
return stack.back(); return stack.back();
} }
/* 访问索引 index 处元素 */ /* 访问索引 index 处元素 */
int get(int index) { int get(int index) {
if(stack.size() < index){
throw out_of_range("超出栈空间大小");
}
return stack[index]; return stack[index];
} }