https://leetcode.com/problems/scramble-string/discuss/29396/Simple-iterative-DP-Java-solution-with-explanation https://leetcode.com/problems/scramble-string/discuss/29394/My-C%2B%2B-solutions-(recursion-with-cache-DP-recursion-with-cache-and-pruning)-with-explanation-(4ms) ...
https://leetcode.com/problems/longest-absolute-file-path/discuss/86821/c-on-solution-with-hashmap https://leetcode.com/problems/longest-absolute-file-path/discuss/86719/two-different-solutions-in-java-using-stack-and-hashmap LeetCode All in One 题目讲解汇总(持续更新中...)...
1importjava.util.ArrayList;2importjava.util.HashSet;3importjava.util.List;4importjava.util.Set;56classSolution {78privateSet<String> validExpressions =newHashSet<String>();9privateintminimumRemoved;1011privatevoidreset() {12this.validExpressions.clear();13this.minimumRemoved =Integer.MAX_VALUE;14}...
Java publicclassSolution{publicintcanCompleteCircuit(int[]gas,int[]cost){//cornerif(gas==null||cost==null||gas.length!=cost.length)return-1;//coreintstart=gas.length-1;//用two pointer模拟deque,并不需要建立dequeintend=0;intgasLeftSum=gas[start]-cost[start];while(start>end){if(gasLeftSum...
方法1,运用queue,一层层遍历并记录。 classSolution{publicList<List<Integer>>levelOrder(TreeNode root){List<List<Integer>>res=newArrayList<>();if(root==null)returnres;//必须检查,不然会进入while,在list.add(current.val)处出错Queue<TreeNode>queue=newLinkedList<>();queue.offer(root);...
https://leetcode.com/problems/edit-distance/#/solutions Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operation is counted as 1 step.) You...Java描述 LeetCode,72. Edit Distance 大家好,我是河海哥,专注于后端,如果可以的话,...
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比如我用Java刷,什么ant, gradle, junit, log4j, slf4j都用起来。可以省去很多搭环境,搭框架的时间,把精力都集中在解决算法上。leetcode虽然出了一个playground,但对vim支持还不太好。大的IDE又不爱用,现阶段我还是不得不自己开编辑器。这里给大家安利一个一键生成"Solution/Test"框架的小工具: 【leetcode-hel...
Java 实现 class Solution { protected boolean isSquare(int n) { int sq = (int) Math.sqrt(n); return n == sq * sq; } public int numSquares(int n) { // four-square and three-square theorems. while (n % 4 == 0) n /= 4; if (n % 8 == 7) return 4; if (this.isSquare...