原题地址： https://leetcode.com/problems/valid-number/
Validate if a given string is numeric.
“0” => true
“ 0.1 “ => true
“abc” => false
“1 a” => false
“2e10” => true
Note: It is intended for the problem statement to be ambiguous. You should gather all requirements up front before implementing one.
原题地址： https://leetcode.com/problems/wildcard-matching/
Implement wildcard pattern matching with support for ‘?’ and ‘*‘.
‘?’ Matches any single character.
‘*‘ Matches any sequence of characters (including the empty sequence).
The matching should cover the entire input string (not partial).
The function prototype should be:
bool isMatch(const char *s, const char *p)
原题地址： https://leetcode.com/problems/spiral-matrix-ii/
Given an integer n, generate a square matrix filled with elements from 1 to n2 in spiral order.
For example,
Given n = 3,
You should return the following matrix:
[
[ 1, 2, 3 ],
[ 8, 9, 4 ],
[ 7, 6, 5 ]
]一救援机器人有三种跳跃模式，可分别跳跃 1m，2m，3m 的距离，请用程序实现该机器人行进 n 米路程时可用的跳跃方式。
程序语言不限，当距离 n 值足够大时，程序执行时间尽量小。
例：当距离为 4 米时，输出结果有 7 种：
1m,1m,1m,1m
1m,1m,2m
1m,2m,1m
1m,3m
2m,1m,1m
2m,2m
3m,1m