经典数学解析-鸡兔同笼

大约在一千五百年前,大数学家孙子在《孙子算经》中记载了这样的一道题:“今有雏兔同笼,上有三十五头,下有九十四足,问雏兔各几何?

	private static final int head = 35; // 头有35个
	private static final int foot = 94; // 脚有94个
	private static final int chicken = 2; // 鸡有2只脚
	private static final int rabbit = 4;  //兔有4只脚
	
	public static void main(String[] args) {
		int count_ck,count_rb;
		for(count_ck=0;count_ck<foot/2;count_ck++){
			for(count_rb=0;count_rb<foot/4;count_rb++){
				if((count_rb+count_ck==head) && (count_rb*4+count_ck*2==94)){
					System.out.println("鸡:"+count_ck);
					System.out.println("兔:"+count_rb);
				}
			}
		}

	}

 

结果:

 

鸡:23
兔:12

 

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