55. Jump Game

本文介绍了一个经典的算法问题——跳跃游戏。问题的目标是从数组的第一个元素出发,判断是否能到达最后一个元素。每个数组元素代表从该位置可以跳跃的最大长度。文章提供了一个简洁高效的解决方案,并通过示例进行了解释。

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Given an array of non-negative integers, you are initially positioned at the first index of the array.

Each element in the array represents your maximum jump length at that position.

Determine if you are able to reach the last index.

For example:
A = [2,3,1,1,4], return true.

A = [3,2,1,0,4], return false.

bool canJump(int A[], int n) {
            // 记录历史跳最远距离
            int distance = 0;
            for(int i = 0;i < n && i <= distance;++i){
                // A[i]+i当前跳最远距离 distance为i之前跳最远距离
                distance = max(A[i]+i,distance);
            }//for
            if(distance < n-1){
                return false;
            }//if
            return true;
        }

资源下载链接为: https://pan.quark.cn/s/abbae039bf2a 在IT领域,序列化是将对象的状态转换为可存储或传输的形式的过程,而反序列化则是将这种形式恢复为原始对象。本文将深入探讨四种常用的序列化工具:Gson、Jackson、FastJson和ProtoBuf,以及与ProtoBuf相关的proto.exe工具。 Gson(Google Gson):Gson是Google提供的Java库,用于将Java对象转换为JSON字符串,反之亦然。它使用简单,支持复杂的类型转换,包括泛型、枚举、自定义序列化和反序列化策略。Gson的优势在于其灵活性和强大的类型处理能力,使得处理JSON数据非常便捷。 Jackson(FasterXML Jackson):Jackson是另一个流行的Java JSON库,提供流式API、树模型和数据绑定等多种方式来处理JSON。Jackson以其速度和效率著称,支持注解和配置,适应不同的序列化需求。其数据绑定特性允许直接将JSON映射到Java对象,简化了JSON处理。 FastJson(阿里巴巴FastJson):FastJson是阿里巴巴开发的高性能JSON库,支持Java对象与JSON之间的转换。它以极快的速度和较低的内存消耗而闻名,特别适合处理大数据量的场景。FastJson提供简单的API,使得在Java中操作JSON变得直观且高效。 ProtoBuf(Protocol Buffers):ProtoBuf是Google开发的数据序列化协议,将结构化数据序列化为二进制格式,便于存储和网络传输。相比于JSON和XML,ProtoBuf的数据体积更小,解析速度更快。proto.exe是ProtoBuf的编译器,可以将.proto文件编译成不同语言(如Java、Python、C++)的源代码,使得在这些语言中可以直接使用
1. Two Sum 2. Add Two Numbers 3. Longest Substring Without Repeating Characters 4. Median of Two Sorted Arrays 5. Longest Palindromic Substring 6. ZigZag Conversion 7. Reverse Integer 8. String to Integer (atoi) 9. Palindrome Number 10. Regular Expression Matching 11. Container With Most Water 12. Integer to Roman 13. Roman to Integer 14. Longest Common Prefix 15. 3Sum 16. 3Sum Closest 17. Letter Combinations of a Phone Number 18. 4Sum 19. Remove Nth Node From End of List 20. Valid Parentheses 21. Merge Two Sorted Lists 22. Generate Parentheses 23. Swap Nodes in Pairs 24. Reverse Nodes in k-Group 25. Remove Duplicates from Sorted Array 26. Remove Element 27. Implement strStr() 28. Divide Two Integers 29. Substring with Concatenation of All Words 30. Next Permutation 31. Longest Valid Parentheses 32. Search in Rotated Sorted Array 33. Search for a Range 34. Find First and Last Position of Element in Sorted Array 35. Valid Sudoku 36. Sudoku Solver 37. Count and Say 38. Combination Sum 39. Combination Sum II 40. First Missing Positive 41. Trapping Rain Water 42. Jump Game 43. Merge Intervals 44. Insert Interval 45. Unique Paths 46. Minimum Path Sum 47. Climbing Stairs 48. Permutations 49. Permutations II 50. Rotate Image 51. Group Anagrams 52. Pow(x, n) 53. Maximum Subarray 54. Spiral Matrix 55. Jump Game II 56. Merge k Sorted Lists 57. Insertion Sort List 58. Sort List 59. Largest Rectangle in Histogram 60. Valid Number 61. Word Search 62. Minimum Window Substring 63. Unique Binary Search Trees 64. Unique Binary Search Trees II 65. Interleaving String 66. Maximum Product Subarray 67. Binary Tree Inorder Traversal 68. Binary Tree Preorder Traversal 69. Binary Tree Postorder Traversal 70. Flatten Binary Tree to Linked List 71. Construct Binary Tree from Preorder and Inorder Traversal 72. Construct Binary Tree from Inorder and Postorder Traversal 73. Binary Tree Level Order Traversal 74. Binary Tree Zigzag Level Order Traversal 75. Convert Sorted Array to Binary Search Tree 76. Convert Sorted List to Binary Search Tree 77. Recover Binary Search Tree 78. Sum Root to Leaf Numbers 79. Path Sum 80. Path Sum II 81. Binary Tree Maximum Path Sum 82. Populating Next Right Pointers in Each Node 83. Populating Next Right Pointers in Each Node II 84. Reverse Linked List 85. Reverse Linked List II 86. Partition List 87. Rotate List 88. Remove Duplicates from Sorted List 89. Remove Duplicates from Sorted List II 90. Intersection of Two Linked Lists 91. Linked List Cycle 92. Linked List Cycle II 93. Reorder List 94. Binary Tree Upside Down 95. Binary Tree Right Side View 96. Palindrome Linked List 97. Convert Binary Search Tree to Sorted Doubly Linked List 98. Lowest Common Ancestor of a Binary Tree 99. Lowest Common Ancestor of a Binary Search Tree 100. Binary Tree Level Order Traversal II
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