package com.whyc.util;
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
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import com.github.pagehelper.PageHelper;
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public class CommonUtil {
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//将数转换成二进制字符串并统计1的个数
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public static int getIntToBinary(int switchState,int[] bit){
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int count=0;
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/*int ss=switchState&(1<<bit);
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while (ss != 0){
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ss = ss & (ss - 1);
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count++;
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}*/
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if(bit.length>0){
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for (int i=0;i<bit.length;i++){
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int ss=switchState&(1<<bit[i]);
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if(ss>0){
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count++;
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}
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}
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}
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return count;
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}
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public static void main(String[] args) {
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System.out.println(getIntToBinary(15,new int[]{0,1,2,3}));
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}
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}
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