如果找到匹配项,则返回 true;如果遍历完整个数组后仍未找到匹配项,则返回 false。 publicbooleanisStringInArray(String[]array,Stringtarget){for(Stringelement:array){if(element.equals(target)){returntrue;}}returnfalse;} 1. 2. 3. 4. 5. 6. 7. 8. 这种方法的时间复杂度为 O(n),其中 n 是数组的...
publicclassStringInArrayExample{publicstaticvoidmain(String[]args){String[]array={"apple","banana","orange","grape"};StringtargetString="banana";booleanfound=false;for(Stringstr:array){if(str.equals(targetString)){found=true;break;}}if(found){System.out.println("目标字符串存在于数组中");}el...
AI代码解释 java复制代码publicclassSortUtils{publicstaticvoidbubbleSort(int[]array){for(int i=array.length-1;i>0;i--){boolean swapped=false;for(int j=0;jarray[j+1]){int temp=array[j];array[j]=array[j+1];array[j+1]=temp;swapped=true;}}assert!swapped||isSorted(array,i):"Array n...
AI代码解释 importjava.io.*;importjava.net.*;publicclassClient{publicstaticvoidmain(String[]args)throws IOException{Socket socket=null;PrintWriter out=null;BufferedReaderin=null;try{socket=newSocket("localhost",4444);out=newPrintWriter(socket.getOutputStream(),true);in=newBufferedReader(newInputStreamR...
}if(s2.isEmpty()) {// 直接返回s1参数returnnewString(s1); }// start "mixing" in length and coder or arguments, order is not// importantlongindexCoder=mix(initialCoder(), s1); indexCoder = mix(indexCoder, s2);byte[] buf = newArray(indexCoder);// prepend each argument in reverse ...
public static void main(String[] args) { ArrayList<String> sites = new ArrayList<String>(); sites.add("Google"); sites.add("Runoob"); sites.add("Taobao"); sites.add("Weibo"); sites.set(2, "Wiki"); // 第一个参数为索引位置,第二个为要修改的值 System.out.println(sites); } }以...
if (element == toCheckValue) { test = true; break; } } System.out.println("Is " + toCheckValue + " present in the array: " + test); } public static void main(String[] args) { int arr[] = {5, 1, 1, 9, 7, 2, 6, 10}; ...
新建类“ArrayDemo1”。 如下编程,完成三个需求,用数组去把它们实现。 packagecom.itheima.arraydemo;publicclassArrayDemo1{publicstaticvoidmain(String[]args){// 格式:静态初始化// 完整格式:数据类型 [] 数组名 = new 数据类型[]{元素 1, 元素 2...};// 简化格式:数据类型 [] 数组名 = {元素 1,...
String filename = "D:\\WorkSpace\\IDEA\\HelloWorld\\out\\production\\HelloWorld\\xiao\\" + name.split("\\.")[name.split("\\.").length - 1] + ".class"; InputStream is = getClass().getResourceAsStream(filename); if (is == null) { return super.loadClass(name); } try { byt...
2.2 JDK原生方法String.contains 最直观判断的方法是contains(subStr),返回类型为boolean,如果包含返回true,不包含则返回false。例子如下: assertTrue("code in Java".contains("Java"));//大小写敏感,不包含GOassertFalse("Let's go".contains("GO"));//转为大写后包含assertTrue("Let's go".toUpperCase()....