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- Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase.
-
- Example 1:
- Input: "Hello"
- Output: "hello"
- Example 2:
- Input: "here"
- Output: "here"
- Example 3:
- Input: "LOVELY"
- Output: "lovely"
复制代码
- class Solution {
- public String toLowerCase(String str) {
-
- String re = "";
-
- for(int i = 0; i <str.length() ; i++){
-
- if(str.charAt(i) >= 'A' && str.charAt(i)<= 'Z') re = re +(char) ((int)str.charAt(i) + 32);
-
- else re = re + str.charAt(i);
- }
-
- return re;
- }
- }
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