Concept of Activity 一个app从不同地方打开，可能在不同位置，比如Email app，从social media app打开是writing email ...
发简信
IP属地：弗吉尼亚州
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Dijkstra Algorithm
1. 两个list的nodes，searched and unsearched 2. start from a source node. 3. go to its neigh...
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Bitwise Operator
XOR: ^ this bit is 1 when they are different, otherwise it is 0. Difference between >> ...
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Topological Sorting
详解Kahn算法和DFS： https://blog.csdn.net/dm_vincent/article/details/7714519 经典题目： Alien Dict...
