p*****o
发帖数: 1285 | 1 1. Print a matrix in spiral order from (0,0) to the center.
2. longest palindromic sub-string.
3. implement a wrapper class, Iterator >, to simulate the
interface of Iterator.
4. validate a binary search tree.
5. design a traffic light system.
6. 2-d sorted matrix, count negative numbers.
7. merge two sorted linked lists. | z****h
发帖数: 164 | | b******v
发帖数: 1493 | 3 traffic light system该怎么design?
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【在 p*****o 的大作中提到】
: 1. Print a matrix in spiral order from (0,0) to the center.
: 2. longest palindromic sub-string.
: 3. implement a wrapper class, Iterator >, to simulate the
: interface of Iterator.
: 4. validate a binary search tree.
: 5. design a traffic light system.
: 6. 2-d sorted matrix, count negative numbers.
: 7. merge two sorted linked lists.
| q***y
发帖数: 236 | 4 多谢分享。
3. implement a wrapper class, Iterator >, to simulate the
interface of Iterator.
这题能在解释下吗？ | p*****o
发帖数: 1285 | 5 Iterator class provides two basic methods,
bool has_next();
T& next();
要求写一个wrapper class for Iterator>, 实现和Iterator相同的界
面，也就是实现上述两个方法。
【在 q***y 的大作中提到】
: 多谢分享。
: 3. implement a wrapper class, Iterator >, to simulate the
: interface of Iterator.
: 这题能在解释下吗？
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