auto commit

notes/20. 表示数值的字符串.md

@@ -1,6 +1,6 @@
 # 20. 表示数值的字符串
 
-[NowCoder](https://www.nowcoder.com/practice/6f8c901d091949a5837e24bb82a731f2?tpId=13&tqId=11206&tPage=1&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking&from=cyc_github)
+[牛客网](https://www.nowcoder.com/practice/e69148f8528c4039ad89bb2546fd4ff8?tpId=13&tqId=11206&tab=answerKey&from=cyc_github)
 
 ## 题目描述
 
@@ -41,8 +41,8 @@ false
 ```
 
 ```java
-public boolean isNumeric(char[] str) {
-    if (str == null || str.length == 0)
+public boolean isNumeric (String str) {
+    if (str == null || str.length() == 0)
         return false;
     return new String(str).matches("[+-]?\\d*(\\.\\d+)?([eE][+-]?\\d+)?");
 }