public class IntLenght {
public static void main(String[] args) {
System.out.println(Integer.SIZE);
}
}
int num = -1111;
int sum = 0;
do {
num /= 10;
sum++;
} while (num != 0);
System.out.println(sum);
int num = 980283828;
int test =32 - Integer.numberOfLeadingZeros(num);
int j;
for(j = 0;j < 10; j++){
if(test < 3 * (j + 1)+1 )
if(num<(int)Math.pow(10,j)){
System.out.println(j );break;
}else{
System.out.println(j+1);break;
}
}
System.out.println("over");
private static int[] TENS = new int[] {
0, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000
};
static int len(int x) {
if (x == Integer.MIN_VALUE) {
// Integer.MIN_VALUE 由于补码的限制，这个32bit数的绝对值等于自己，所以特殊处理
return 10;
}
x = x < 0 ? -x : x;
for (int i = 1; i < TENS.length - 1; i++) {
if (x < TENS[i]) {
return i;
}
}
return TENS.length;
}
public class Test {
final static int [] sizeTable = { 9, 99, 999, 9999, 99999, 999999, 9999999,
99999999, 999999999, Integer.MAX_VALUE };
static int stringSize(int x) {
for (int i=0; ; i++)
if (x <= sizeTable[i])
return i+1;
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print(stringSize(2));
}
}
