to_string函数

• 1031 Hello World for U (20) [图形打印]
• 1136 A Delayed Palindrome (20) [⽔题]
• 1139 First Contact (30) [⽔题]
• 1143 Lowest Common Ancestor (30) [⽔题]
• 1148 Werewolf – Simple Version (20) [⽔题]

• 1002 A+B for Polynomials (25) [模拟]
• 1009 Product of Polynomials (25) [模拟]
• 1017 Queueing at Bank (25) [模拟]
• 1026 Table Tennis (30) [模拟，排序]
• 1042 Shufling Machine (20) [模拟]
• 1046 Shortest Distance (20) [模拟]
• 1065 A+B and C (64bit) (20) [模拟]
• 1105 Spiral Matrix (25) [模拟]
• 1153 Decode Registration Card of PAT (25) [模拟，排序，map]

• 1010 Radix (25) [⼆分法]
• 1044 Shopping in Mars (25) [⼆分查找]
• 1085 Perfect Sequence (25) [⼆分，two pointers]

• 1093 Count PAT’s (25) [逻辑题]
• 1096 Consecutive Factors (20) [逻辑题]
• 1109 Group Photo (25) [逻辑题]
• 1116 Come on! Let’s C (20) [简单逻辑题]
• 1117 Eddington Number(25) [简单逻辑题]
• 1128 N Queens Puzzle (20) [逻辑题]

• 1006 Sign In and Sign Out (25) [查找元素]
• 1011 World Cup Betting (20) [查找元素]
• 1012 The Best Rank (25) [排序]
• 1016 Phone Bills (25) [排序]
• 1025 PAT Ranking (25) [排序]
• 1028 List Sorting (25) [排序]
• 1036 Boys vs Girls (25) [查找元素]
• 1055 The World’s Richest (25) [排序]
• 1062 Talent and Virtue (25) [排序]
• 1075 PAT Judge (25) [排序]
• 1080 Graduate Admission (30) [排序]
• 1083 List Grades (25) [排序]
• 1098 Insertion or Heap Sort (25) [heap sort（堆排序）]
• 1101 Quick Sort (25) [快速排序]
• 1113 Integer Set Partition (25) [排序]
• 1125 Chain the Ropes (25) [排序，贪⼼]
• 1141 PAT Ranking of Institutions (25) [排序，map STL]

• 1001 A+B Format (20) [字符串处理]
• 1005 Spell It Right (20) [字符串处理]
• 1019 General Palindromic Number (20) [回⽂数]
• 1035 Password (20) [字符串处理]
• 1061 Dating (20) [字符串处理]
• 1073 Scientific Notation (20) [字符串处理]
• 1077 Kuchiguse (20) [字符串处理]
• 1082 Read Number in Chinese (25) [字符串处理]
• 1108 Finding Average (20) [字符串处理]
• 1140 Look-and-say Sequence (20) [字符串处理]
• 1152 Google Recruitment (20) [字符串处理]

• 1008 Elevator (20) [数学问题]
• 1015 Reversible Primes (20) [素数]
• 1023 Have Fun with Numbers (20) [⼤整数运算]
• 1024 Palindromic Number (25) [⼤整数相加]
• 1027 Colors in Mars (20) [进制转换]
• 1049 Counting Ones (30) [数学问题]
• 1058 A+B in Hogwarts (20) [进制转换]
• 1059 Prime Factors (25) [素数表的建⽴]
• 1060 Are They Equal (25) [科学计数法]
• 1069 The Black Hole of Numbers (20) [数学问题]
• 1081 Rational Sum (20) [分数的四则运算]
• 1088 Rational Arithmetic (20) [分数的四则运算]
• 1104 Sum of Number Segments (20) [数学问题]
• 1132 Cut Integer (20) [数学问题]

• 1033 To Fill or Not to Fill (25) [贪⼼算法]
• 1037 Magic Coupon (25) [贪⼼算法]
• 1038 Recover the Smallest Number (30) [贪⼼算法]
• 1067 Sort with Swap(0,*) (25) [贪⼼算法]
• 1070 Mooncake (25) [贪⼼算法]

• 1091 Acute Stroke (30) [⼴度优先搜索BFS]
• 1103 Integer Factorization (30) [深度优先搜索DFS]
• 1130 Infix Expression (25) [dfs深度优先搜索]
• 1131 Subway Map (30) [dfs深度优先搜索]

• 1057 Stack (30) [树状数组]
• 1135 Is It A Red-Black Tree (30) [红⿊树]
• 1147 Heaps (30) [堆，树的遍历]
• 1155 Heap Paths (30) [深搜回溯，堆]

• Pop Sequence (25) [栈模拟]

• 1032 Sharing (25) [链表]
• 1052 Linked List Sorting (25) [链表]
• 1074 Reversing Linked List (25) [链表]
• 1097 Deduplication on a Linked List (25) [链表]
• 1133 Splitting A Linked List (25) [链表]

• 1014 Waiting in Line (30) [queue的应⽤]
• 1056 Mice and Rice (25) [queue的⽤法]

• 1004 Counting Leaves (30) [BFS，DFS，树的层序遍历]
• 1020 Tree Traversals (25) [⼆叉树的遍历，后序中序转层序]
• 1043 Is It a Binary Search Tree (25) [⼆叉查找树BST]
• 1053 Path of Equal Weight (30) [树的遍历]
• 1064 Complete Binary Search Tree (30) [⼆叉查找树BST]
• 1066 Root of AVL Tree (25) [平衡⼆叉树（AVL树）]
• 1079 Total Sales of Supply Chain (25) [DFS，BFS，树的遍历]
• 1086 Tree Traversals Again (25) [树的遍历]
• 1090 Highest Price in Supply Chain (25) [树的遍历]
• 1094 The Largest Generation (25) [BFS，DFS，树的遍历]
• 1099 Build A Binary Search Tree (30) [⼆叉查找树BST]
• 1102 Invert a Binary Tree (25) [树的遍历]
• 1106 Lowest Price in Supply Chain (25) [DFS，BFS，树的遍历]
• 1110 Complete Binary Tree (25) [完全⼆叉树]
• 1115 Counting Nodes in a BST (30) [⼆叉树的遍历，DFS]
• 1119 Pre- and Post-order Traversals (30) [树的遍历，前序后序转中序]
• 1127 ZigZagging on a Tree (30) [中序后序建树，层序遍历]
• 1138 Postorder Traversal (25) [树的遍历，前序中序转后序]
• 1151 LCA in a Binary Tree (30) [树的遍历，LCA算法]

• 1022 Digital Library (30) [map映射，STL的使⽤]
• 1039 Course List for Student (25) [不定⻓数组vector，STL的使⽤]
• 1047 Student List for Course (25) [不定⻓数组vector，STL的使⽤]
• 1054 The Dominant Color (20) [map映射，STL的使⽤]
• 1063 Set Similarity (25) [集合set，STL的使⽤]
• 1071 Speech Patterns (25) [map映射，STL的使⽤]
• 1095 Cars on Campus (30) [map的⽤法，排序]
• 1100 Mars Numbers (20) [map映射，STL的使⽤]
• 1112 Stucked Keyboard (20) [map映射，STL的使⽤]
• 1120 Friend Numbers (20) [set的应⽤]
• 1121 Damn Single (25) [set的应⽤]
• 1124 Rafle for Weibo Followers (20) [map映射]
• 1129 Recommendation System (25) [set的应⽤，运算符重载]
• 1137 Final Grading (25) [map映射，排序]
• 1144 The Missing Number (20) [STL，map]
• 1149 Dangerous Goods Packaging (25) [STL的应⽤]
• 1154 Vertex Coloring (25) [set,hash]

• 1029 Median (25) [two pointers]
• 1089 Insert or Merge (25) [two pointers]

• 1041 Be Unique (20) [Hash散列]
• 1048 Find Coins (25) [Hash散列]
• 1050 String Subtraction (20) [Hash散列]
• 1078 Hashing (25) [⼆次⽅探查法]
• 1084 Broken Keyboard (20) [Hash散列]
• 1092 To Buy or Not to Buy (20) [Hash散列]
• 1134 Vertex Cover (25) [hash散列]
• 1145 Hashing – Average Search Time (25) [哈希映射，哈希表，平⽅探测法]

• 1003 Emergency (25) [Dijkstra算法]
• 1013 Battle Over Cities (25) [图的遍历，统计连通分量的个数，DFS]
• 1018 Public Bike Management (30) [Dijkstra算法 + DFS]
• 1021 Deepest Root (25) [图的遍历，DFS，计算连通分量的个数]
• 1030 Travel Plan (30) [Dijkstra算法 + DFS，最短路径，边权]
• 1034 Head of a Gang (30) [图的遍历，DFS]
• 1072 Gas Station (30) [Dijkstra算法]
• 1076 Forwards on Weibo (30) [图的遍历，BFS]
• 1087 All Roads Lead to Rome (30) [Dijkstra算法 + DFS，最短路径]
• 1107 Social Clusters (30) [并查集]
• 1111 Online Map (30) [Dijkstra算法 + DFS]
• 1114 Family Property (25) [并查集]
• 1118 Birds in Forest (25) [并查集]
• 1122 Hamiltonian Cycle (25) [图论]
• 1123 Is It a Complete AVL Tree (30) [AVL树]
• 1126 Eulerian Path (25) [连通图]
• 1142 Maximal Clique (25) [图论，⽆向完全图]
• 1146 Topological Order (25) [拓扑排序]
• 1150 Travelling Salesman Problem (25) [图论]

• 1007 Maximum Subsequence Sum(25) [动态规划，最⼤连续⼦序列和]
• 1040 Longest Symmetric String (25) [动态规划]
• 1045 Favorite Color Stripe (30) [动态规划，LIS / LCS]
• 1068 Find More Coins (30) [01背包，动态规划]