具体代码如下:
public class Myinteger {
//方法1:
public static int parseInt1(char[] chars) {
int sum = 0;
for (int i = 0; i < chars.length; i++) {
sum=sum*10+(chars[i]-48);
}
return sum;
}
//方法2:
public static int parseInt2(char[] chars) {
int sum = 0;
for (int i = 0; i < chars.length; i++) {
sum=(int) (sum+(chars[i]-48)*Math.pow(10,(chars.length-i-1)));
}
return sum;
}
//调用方法
public static void main(String[] args) {
int num = Myinteger.parseInt1(new char[] {'1','3','9'});
System.out.println(num);
}
}