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新增API
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@ -2162,6 +2162,17 @@ public class NumberUtil {
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public static BigDecimal pow(BigDecimal number, int n) {
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return number.pow(n);
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}
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/**
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* 判断一个整数是否是2的幂
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*
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* @param n 待验证的整数
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* @return 如果n是2的幂返回true, 反之返回false
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*/
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public static boolean isPowerOfTwo(long n) {
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return (n > 0) && ((n & (n - 1)) == 0);
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}
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/**
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* 解析转换数字字符串为int型数字,规则如下:
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