得到树结构,匹配中序数据,得层序
A1100 Mars Numbers (20 point(s))
数学问题
A1101 Quick Sort (25 point(s))
快速排序
A1102 Invert a Binary Tree (25 point(s))
中序 层序
A1103 Integer Factorization (30 point(s))
因子计算
A1104 Sum of Number Segments (20 point(s))
简单推理
A1105 Spiral Matrix (25 point(s))
递归
A1106 Lowest Price in Supply Chain (25 point(s))
DFS应用
A1107 Social Clusters (30 point(s))
并查集应用
A1108 Finding Average (20 point(s))
sscanf,sprintf使用