java算法-最大值、最小值

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java求最大值的三种方法

一般方法:

public class maxtest {
	public static void main(String[] args) {
		//###################最大值最小值start###################//
		int[] aa = {4,2,17,5,22,8,13,6};
		int max = aa[0];
		int min = aa[0];
		for (int i = 0; i < aa.length-1; i++) {
			if(aa[i] > max){
				max = aa[i];
			}
		}
		System.out.println("最大值"+max);
		
		for (int i = 0; i < aa.length-1; i++) {
			if(aa[i] < min){
				min = aa[i];
			}
		}
		System.out.println("最小值"+min);
		//###################最大值最小值end###################//
	}
}

结果值

最大值22
最小值2

三元运算符方法:

public class maxtest {
	public static void main(String[] args) {
		//###################三元运算符最大值最小值start###################//
		int[] aa = {4,2,17,5,22,8,13,6};
		int max = aa[0];
		int min = aa[0];
		for (int i = 0; i < aa.length; i++) {
			max = (aa[i] < max ? max : aa[i]);
		}
		System.out.println("最大值"+max);
		
		for (int i = 0; i < aa.length; i++) {
			min = (aa[i] > min ? min : aa[i]);
		}
		System.out.println("最小值"+min);
		//###################三元运算符最大值最小值start###################//
	}
}

结果值

最大值22
最小值2

无聊写着玩的方法:

public class maxtest {
	public static void main(String[] args) {
		//###################最大值最小值(分开查找)start###################//
		int[] aa = {4,2,17,5,22,8,13,6,14,12,117,15,122,18,113,16,24,22,217,25,222,28,213,26,214,212,117,215,122,218,113,216};
		int bb = aa.length/2;
		int bbmax = aa[0];
		for (int i = 0; i < bb-1; i++) {
			if(aa[i] > bbmax){
				bbmax = aa[i];
			}
		}
		int ccmax = aa[bb];
		for (int i = 0; i < aa.length-1; i++) {
			if(aa[i] > ccmax){
				ccmax = aa[i];
			}
		}
		System.out.println("左最大值:"+bbmax);
		System.out.println("右最大值:"+ccmax);
		if(bbmax > ccmax){
			System.out.println("结果值:"+bbmax);
		}else{
			System.out.println("结果值:"+ccmax);
		}
		//###################最大值最小值(分开查找)end###################//	
	}
}

结束值

左最大值:122
右最大值:222
结果值:222

 

转载于:https://my.oschina.net/Clarences/blog/1585054

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