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package class01;
public class Code03_Near2Power {
// 已知n是正数
// 返回大于等于，且最接近n的，2的某次方的值
public static final int tableSizeFor(int n) {
n--;
n |= n >>> 1;
n |= n >>> 2;
n |= n >>> 4;
n |= n >>> 8;
n |= n >>> 16;
return (n < 0) ? 1 : n + 1;
}
public static void main(String[] args) {
int cap = 120;
System.out.println(tableSizeFor(cap));
