2496. Maximum Value of a String in an Array

Easy
The value of an alphanumeric string can be defined as:
  • The numeric representation of the string in base 10, if it comprises of digits only.
  • The length of the string, otherwise.
Given an array strs of alphanumeric strings, return the maximum value of any string in strs.
Example 1:
Input: strs = ["alic3","bob","3","4","00000"]
Output: 5
Explanation:
- "alic3" consists of both letters and digits, so its value is its length, i.e. 5.
- "bob" consists only of letters, so its value is also its length, i.e. 3.
- "3" consists only of digits, so its value is its numeric equivalent, i.e. 3.
- "4" also consists only of digits, so its value is 4.
- "00000" consists only of digits, so its value is 0.
Hence, the maximum value is 5, of "alic3".
Example 2:
Input: strs = ["1","01","001","0001"]
Output: 1
Explanation:
Each string in the array has value 1. Hence, we return 1.
Constraints:
  • 1 <= strs.length <= 100
  • 1 <= strs[i].length <= 9
  • strs[i] consists of only lowercase English letters and digits.

解題

只要有字元,使用 strconv.Atoi 就會有 error,透過這點判斷要將字串轉為 int 還是取其長度。
func maximumValue(strs []string) int {
ans := 0
​
for _, str := range strs {
if s, err := strconv.Atoi(str); err == nil {
if s > ans { ans = s}
} else {
if len(str) > ans { ans = len(str)}
}
}
​
return ans
}