摘要：
DescriptionGiven a connected undirected graph, tell if its minimum spanning tree is unique. Definition 1 (Spanning Tree): Consider a connected, undire... 阅读全文
摘要：
DescriptionAndrew is working as system administrator and is planning to establish a new network in his company. There will be N hubs in the company, t... 阅读全文
摘要：
DescriptionConsider the following 5 picture frames placed on an 9 x 8 array. ........ ........ ........ ........ .CCC....EEEEEE.. ........ ........ ..... 阅读全文