Design an algorithm to encode an N-ary tree into a binary tree and decode the binary tree to get the original N-ary tree. An N-ary tree is a rooted tree in which each node has no more than N children. Similarly, a binary tree is a rooted tree in which each node has no more th...
Design an algorithm to encode an N-ary tree into a binary tree and decode the binary tree to get the original N-ary tree. An N-ary tree is a rooted tree in which each node has no more than N children. Similarly, a binary tree is a rooted tree in which each node has no more th...
tree data structurestrees (mathematics)/ families of treesordinal treesk-ary treescardinal treesunordered treesfree treesentropy-based encodingsdegree-distribution entropyWe propose a uniform method to encode various types of trees succinctly. These families include ordered (ordinal), k -ary (cardinal),...
Plus会员 测试用例 测试结果 测试结果 智能模式 Case 1Case 2Case 3 [1,null,3,2,4,null,5,6] 9 1 2 3 › [1,null,3,2,4,null,5,6] [1,null,2,3,4,5,null,null,6,7,null,8,null,9,10,null,null,11,null,12,null,13,null,null,14] ...
Space: O(n). StringBuilder sb 大小. AC Java: 1publicclassCodec {23//Encodes a list of strings to a single string.4publicString encode(List<String>strs) {5if(strs ==null|| strs.size() == 0){6return"";7}8StringBuilder sb =newStringBuilder();9for(String s : strs){10intlen =...
Space: O(n). StringBuilder sb 大小. AC Java: 1publicclassCodec {23//Encodes a list of strings to a single string.4publicString encode(List<String>strs) {5if(strs ==null|| strs.size() == 0){6return"";7}8StringBuilder sb =newStringBuilder();9for(String s : strs){10intlen =...