Grady_Ne的博客

Are They Equal  If a machine can save only 3 significant digits, the float numbers 12300 and 12358.9 are considered equal since they are both saved as 0.123*105 with simple chopping. Now given t

一  priority_queue常用函数实例解析(1) push() push(x) 令x入队，时间复杂度为O(log N), 其中 N 为当前优先队列中元素的个数(2) top() 获得队首元素(即堆顶元素)，时间复杂度为O(1).(3) pop() 令队首元素(即堆顶元素)出队，时间复杂度为O(log N).(4) empty() 检测优先队列是否为空，返回 true则空，返