用java写一个方法判断是否是奇数，在主(Main)方法中输入一个数。调用判断奇数的方法，并输出是否是奇数。 Java 输入一个数判断奇数偶数
java\u600e\u4e48\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5947\u6570\u8fd8\u662f\u5076\u6570\u80fd\u591f\u88ab2\u6574\u9664\u7684\u6574\u6570\u662f\u5076\u6570\uff0c\u4e0d\u80fd\u88ab2\u6574\u9664\u7684\u662f\u5947\u6570\u3002
i % 2 == 1 ? "\u5947\u6570" : "\u5076\u6570";
\u4ee5\u4e0a\u7a0b\u5e8f\u5982\u679ci\u4e3a\u8d1f\u6570\u7ed3\u679c\u4e3a\u5076\u6570\u3002
Java\u53d6\u4f59(%)\u7b97\u6cd5\u4ee3\u7801\u5982\u4e0b\uff1a
// dividend\u88ab\u9664\u6570 divisor \u9664\u6570public static int remainder(int dividend, int divisor){ return dividend - dividend / divisor * divisor;}
\u6240\u4ee5\u5f53\u8f93\u5165 -1\u65f6 \u8fd0\u7b97\u7ed3\u679c\u662f-1\uff0c\u5f53\u7136\u4e0d\u7b49\u4e8e1\u4e86\uff0c\u6240\u4ee5\u5b83\u88ab\u5224\u5b9a\u4e3a\u5076\u6570\u4e86\u3002
\u56e0\u4e3a\u6539\u4e3a\u5224\u65ad\u662f\u5426\u662f\u5076\u6570\u5373\u53ef
i % 2 == 0 ? "\u5076\u6570" : "\u5947\u6570";
Java\u662f\u4e00\u79cd\u53ef\u4ee5\u64b0\u5199\u8de8\u5e73\u53f0\u5e94\u7528\u7a0b\u5e8f\u7684\u9762\u5411\u5bf9\u8c61\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u8bed\u8a00\u3002Java \u6280\u672f\u5177\u6709\u5353\u8d8a\u7684\u901a\u7528\u6027\u3001\u9ad8\u6548\u6027\u3001\u5e73\u53f0\u79fb\u690d\u6027\u548c\u5b89\u5168\u6027\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8ePC\u3001\u6570\u636e\u4e2d\u5fc3\u3001\u6e38\u620f\u63a7\u5236\u53f0\u3001\u79d1\u5b66\u8d85\u7ea7\u8ba1\u7b97\u673a\u3001\u79fb\u52a8\u7535\u8bdd\u548c\u4e92\u8054\u7f51\uff0c\u540c\u65f6\u62e5\u6709\u5168\u7403\u6700\u5927\u7684\u5f00\u53d1\u8005\u4e13\u4e1a\u793e\u7fa4\u3002
import java.util.*;
public class Math
{
public static void main(String args[])
{
int a,b;
Scanner sc=new Scanner(System.in); //\u5c40\u90e8\u53d8\u91cfb\u91cd\u590d
a=sc.nextInt(); //\u5c40\u90e8\u53d8\u91cfa\u91cd\u590d
if(a%2==0 ) //\u5224\u65ad\u6761\u4ef6\u9519\u8bef
{
System.out.println("\u8fd9\u4e2a\u6570\u662f\u5076\u6570");
}
else
System.out.println("\u8fd9\u4e2a\u6570\u662f\u5947\u6570");
}
}
判断的核心是使用%求余. n%2 如果是0 ,那么是偶数,不是0就是奇数
参考代码
import java.util.Scanner;
public class JiShu {
public static void main(String[] args) {
System.out.println(".....奇数判断程序...");
System.out.print("请输入一个数字:");
Scanner sc = new Scanner(System.in);//扫描器,用于读取控制台输入
int n = sc.nextInt();//得到输入的数字
if(isJiShu(n)){//调用方法进行判断是否是奇数
System.out.println(n+"是奇数");
}else{
System.out.println(n+"是偶数");
}
}
public static boolean isJiShu(int n){
if(n%2==0){//如果除2,余数是0,那么就不是奇数,返回false
return false;
}else{//余数不为0,那么返回true
return true;
}
}
}
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