string strinfo = " //*---Hello Word!...---"; string strset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; int first = strinfo.find_first_of(strset); if (first == string::npos) { cout << "not find any characters" << endl; return -1; } int last = strinfo.find_las...
public inline fun String.substring(startIndex: Int): String = (this as java.lang.String).substring(startIndex) @kotlin.internal.InlineOnly public inline fun String.substring(startIndex: Int, endIndex: Int): String = (this as java.lang.String).substring(startIndex, endIndex) public fun String...
Optional<String> findFirst = lst1.parallelStream().filter(s -> s.startsWith("D")).findFirst(); Optional<String> fidnAny = lst2.parallelStream().filter(s -> s.startsWith("J")).findAny(); System.out.println(findFirst.get());//总是打印出David System.out.println(fidnAny.get());//会...
Write a Java program to find the first non-repeating character in a string. Visual Presentation: Sample Solution: Java Code: // Importing necessary Java utilities.importjava.util.*;// Define a class named Main.publicclassMain{// Main method to execute the program.publicstaticvoidmain(String[]...
一、String基本操作方法 首先说一下基本操作方法,字符串的基本操作方法中包含以下几种: (1)获取字符串长度length() (2)获取字符串中的第i个字符charAt(i) (3)获取指定位置的字符方法getChars(4个参数) 1、 获取字符串长度方法length() 格式:int length = str.length(); ...
asList("Amon", "Adam", "Audrey", "Klein", "Leonard"); Optional<String> max = stringList.stream().max(Comparator.comparing(String::length)); max.ifPresent(action -> { System.out.println("max.length--->" + action); }); //<!---> //获取Integer集合中最小值 List<Integer> minList...
println(substring4); // 输出: example. // 5. 提取第一个单词 int firstSpaceIndex = originalString.indexOf(" "); String substring5 = originalString.substring(, firstSpaceIndex); System.out.println(substring5); // 输出: Hello, // 6. 去除字符串前后的空格 String trimmedString =...
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public voidtestDistinct2(){Stream.of(newPerson("刘德华",58),newPerson("张学友",56),newPerson("张学友",56),newPerson("黎明",52)).distinct().forEach(System.out::println);}public classPerson{private String name;private int age;// 省略其他} ...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 Set<String> citySet = userList.stream().map(User::getCity).collect(Collectors.toSet()); 5.4、counting 符合条件的用户总数 代码语言:javascript 代码运行次数:0 运行 AI代码解释 long count = userList.stream().filter(user -> user.getId()>1)....