private readonly static int[] _digitTable = { 9, 99, 999, 9999, 99999, 999999, 9999999, 99999999, 999999999, int.MaxValue };
private static void Main(string[] args) {
for (int i = 0; i < int.MaxValue; i++) {
int key = 0;
key = i >> 1 >> (i >> 1).ToString().Length;
key = (key - 1200000 >> 10) * 2 + 1;
if (key == 5)
Console.WriteLine(i);
}
for (int i = 0; i < int.MaxValue; i++) {
if (i * 2 < 0)
break;
if (1202048 == i >> DigitOf(i))
Console.WriteLine(i * 2);
}
Console.ReadKey(true);
return;
}
private static int DigitOf(int x) {
for (int i = 0; ; i++)
if (x <= _digitTable[i])
return i + 1;
}
发表于 2019-1-22 12:07
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发表于 2019-1-22 12:21
