public static void main(String[] args){
		//靜態(tài)初始化1
		//String[] names = new String[]{"小明","小紅","鐵蛋","二狗","大傻子"};
		//靜態(tài)初始化2
		//String[] names;
		//names = new String[]{"小明","小紅","鐵蛋","二狗","大傻子"};
		//靜態(tài)初始化3
		String[] names = {"小明","小紅","鐵蛋","二狗","大傻子"};
		//設(shè)置指定下標(biāo)上的元素
		names[3] = "大狗";
		//獲取指定下標(biāo)上的元素
		String n = names[3];
		System.out.println("獲取指定下標(biāo)上的元素：" + n);//林成
		//ArrayIndexOutOfBoundsException - 數(shù)組下標(biāo)越界異常
		//System.out.println(names[100]);
		//獲取元素個(gè)數(shù)
		int len = names.length;
		System.out.println("獲取元素個(gè)數(shù)：" + len);//5
		System.out.println("-----------");
		//遍歷 - for循環(huán)
		for(int i = 0;i<names.length;i++){
			System.out.println(names[i]);
		}
		System.out.println("-----------");
		//遍歷 - foreach(增強(qiáng)for循環(huán))
		for(String str:names){//遍歷數(shù)組，依次把元素賦值給str
			System.out.println(str);
		}
		/**
			遍歷時(shí)要使用到下標(biāo)，就用for循環(huán)遍歷
			遍歷時(shí)要不使用到下標(biāo)，就用foreach遍歷	
		*/
	}

public static void main(String[] args){
		//動(dòng)態(tài)初始化1
		String[] names = new String[5];//5->5個(gè)長(zhǎng)度
		//設(shè)置指定下標(biāo)上的元素
		names[0] = "小明";
		names[1] = "鐵蛋";
		names[2] = "二狗";
		//獲取指定下標(biāo)上的元素
		String n = names[2];
		System.out.println("獲取指定下標(biāo)上的元素：" + n);//二狗
		//ArrayIndexOutOfBoundsException - 數(shù)組下標(biāo)越界異常
		//System.out.println(names[100]);
		//獲取元素個(gè)數(shù)
		int len = names.length;
		System.out.println("獲取元素個(gè)數(shù)：" + len);//5
		System.out.println("-----------");
		//遍歷 - for循環(huán)
		for(int i = 0;i<names.length;i++){
			System.out.println(names[i]);
		}
		System.out.println("-----------");
		//遍歷 - foreach(增強(qiáng)for循環(huán))
		for(String str:names){//遍歷數(shù)組，依次把元素賦值給str
			System.out.println(str);
		}
		/**
			遍歷時(shí)要使用到下標(biāo)，就用for循環(huán)遍歷
			遍歷時(shí)要不使用到下標(biāo)，就用foreach遍歷	
		*/

public static void main(String[] args){
		//源數(shù)組
		String[] names = {"小明","小紅","鐵蛋","二狗"};
		//新數(shù)組
		//(names.length>>1在此次可以理解為(names.length/2)
		int capacity = names.length + (names.length>>1);//新容量：是源數(shù)組長(zhǎng)度的1.5倍
		String[] newNames = new String[capacity];
		//把源數(shù)組所有的數(shù)據(jù)遷移到新數(shù)組中
		for(int i = 0;i<names.length;i++){
			newNames[i] = names[i];
		}
		//將新數(shù)組的地址賦值給源數(shù)組
		names = newNames;
		//遍歷源數(shù)組
		for(String name:names){
			System.out.println(name);
		}
	}

public class Test111 {
	public static void main(String[] args){
	    //源數(shù)組
	    String[] names = {"小明","小紅","鐵蛋","二狗"};
	    //新數(shù)組
	    String[] newNames = names;
	    //遍歷新數(shù)組
	    System.out.print("修改原數(shù)據(jù)前：");
	    for(String name : newNames){
	        System.out.print(name+"\t");
	    }
	    System.out.println();
	    //修改源數(shù)組
	    names[0] = "大傻子";
	    //遍歷新數(shù)組
	    System.out.print("修改原數(shù)據(jù)后：");
	    for(String name : newNames){
	        System.out.print(name+"\t");
	    }
	    System.out.println();
	}
}

public static void main(String[] args){
		//源數(shù)組
		String[] names = {"小明","小紅","鐵蛋","二狗"};
		//新數(shù)組
		String[] newNames = new String[names.length];
		//將源數(shù)組中數(shù)據(jù)依次賦值給新數(shù)組
		for(int i = 0;i<names.length;i++){
			newNames[i] = names[i];
		}
		//修改源數(shù)組
		names[0] = "大聰明";
		//遍歷新數(shù)組
		for(String name : newNames){
			System.out.println(name);
		}
	}

public static void main(String[] args){
		//源數(shù)組
		String[] names = {"小明","小紅","鐵蛋","二狗"};
		//新數(shù)組
		String[] newNames = new String[names.length-1];
		//將源數(shù)組的數(shù)據(jù)遷移到新數(shù)組中，要?jiǎng)h除的元素(深田詠美)除外
		int index = 0;//新數(shù)組的下標(biāo)
		for(String name:names){
			if(!name.equals("小紅")){
				newNames[index] = name;
				index++;
			}
		}
		//將新數(shù)組的地址賦值給源數(shù)組
		names = newNames;
		//遍歷源數(shù)組
		for(String name:names){
			System.out.println(name);
		}
	}

public static void main(String[] args){
		//源數(shù)組
		String[] names = {"小明","小紅","鐵蛋","二狗"};
		//數(shù)據(jù)的遷移
		for(int i = 1;i<names.length-1;i++){
			names[i] = names[i+1];
		}
		names[names.length-1] = null;
		//遍歷源數(shù)組
		for(String name:names){
			System.out.println(name);
		}
	}

public static void main(String[] args){
		int[] is = {39,77,27,20,45,62};
		for(int i = 0;i<is.length-1;i++){
			for(int j = 0;j<is.length-1-i;j++){
				if(is[j] > is[j+1]){
					int temp = is[j];
					is[j] = is[j+1];
					is[j+1] = temp;
				}
			}
		}
		for(int num : is){
			System.out.println(num);
		}
	}

public static void main(String[] args){
	import java.util.Arrays;
    int[] a={1,5,8,6};
    for(int num : a){
		System.out.println(num);
	}
}

for(int i = 0;i<is.length;i++){
			if(is[i] == num){
				System.out.println("查找到了");
			}
		}

public static void main(String[] args){
		int[] is = {39,77,27,20,45,62};
		int num = 77;
		//排序
		Arrays.sort(is);
		int start = 0;
		int end = is.length-1;
		while(start <= end){
			int mid = (start+end)/2;
			if(num >is[mid]){
				start = mid+1;
			}else if(num < is[mid]){
				end = mid-1;
			}else{
				System.out.println("查找到了");
				break;
			}
		}
	}