709. To Lower Case

class Solution {
    public String toLowerCase(String s) {
       
        char c[] = s.toCharArray();
        
        for(int i =0;i<c.length;i++){
            
            if(c[i]>=65 && c[i]<=90){
//                 UperCase to lower Case
                c[i] = (char)(c[i]+32);
            }
        }
        
        return String.valueOf(c);
    }
}