链表
st=>start: Start
op=>operation: Your Operation
cond=>condition: Yes or No?
e=>end
st->op->cond
cond(yes)->e
cond(no)->op
st=>start: 开始
e=>end: 结束
op=>operation: 我的操作
cond=>condition: 确认?
st->op->cond
cond(yes)->e
cond(no)->op
st=>start: Start
op=>operation: Your Operation
cond=>condition: Yes or No?
e=>end
st->op->cond
cond(yes)->e
cond(no)->op
st=>start: 开始
e=>end: 结束
op=>operation: 我的操作
cond=>condition: 确认?
st->op->cond
cond(yes)->e
cond(no)->op