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1021. Deepest Root (25)A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you a... 阅读全文
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1033. To Fill or Not to Fill (25)With highways available, driving a car from Hangzhou to any other city is easy. But since the tank capacity of a car ... 阅读全文
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1098. Insertion or Heap Sort (25)According to Wikipedia:Insertion sortiterates, consuming one input element each repetition, and growing a sorted outp... 阅读全文
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1066. Root of AVL Tree (25)An AVL tree is a self-balancing binary search tree. In an AVL tree, the heights of the two child subtrees of any node diffe... 阅读全文
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1072. Gas Station (30)A gas station has to be built at such a location that the minimum distance between the station and any of the residential housin... 阅读全文
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1055. The World's Richest (25)Forbes magazine publishes every year its list of billionaires based on the annual ranking of the world's wealthiest peop... 阅读全文
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1022. Digital Library (30)A Digital Library contains millions of books, stored according to their titles, authors, key words of their abstracts, publi... 阅读全文