3,5,7,9]; // 从左往右查找, 找到返回索引,
lastIndexOf(Object obj)方法,与indexOf()方法相反,它返回的是某个元素最后一次出现的索引位置的值,也就是它会从序列的队尾向队头进行遍历。 以上两个方法的参数对象如果在序列中都没有出现的话,那么这两个方法都会返回-1。 SetTest类部分示例代码: packagecom.test.collection;importjava.util.ArrayList;importja...
text/java this.codePointAt(k) == ch </blockquote> is true. In either case, if no such character occurs in this string, then-1is returned. TheStringis searched backwards starting at the last character. Java documentation forjava.lang.String.lastIndexOf(int). Portions of...
import java.util.ArrayList; public class Main { public static void main(String[] args) { ArrayList<String> cars = new ArrayList<String>(); cars.add("Volvo"); cars.add("Ford"); cars.add("BMW"); cars.add("Ford"); cars.add("Mazda"); System.out.println(cars.indexOf("Ford")); Sy...
lastIndexOf()方法 Java查找字符串最后一次出现的位置 package com.qf.chapter02; public class TestStringSearch { public static void main(String[] args) { String string="hello world ,java is the best in the world"; int lastIndex=string.lastIndexOf("world");//字符串第一个字符最后出现的下标 ...
String str1 ="Learn Java";intresult;// getting index of character 'J'result = str1.lastIndexOf('J'); System.out.println(result);// 6// the last occurrence of 'a' is returnedresult = str1.lastIndexOf('a'); System.out.println(result);// 9// character not in the stringresult ...
Java Code: // Define a public class named Exercise21.publicclassExercise21{// Define the main method.publicstaticvoidmain(String[]args){// Declare and initialize a string variable.Stringstr="The quick brown fox jumps over the lazy dog.";// Get the index of all the characters of the alph...
Namespace: Java.Util Assembly: Mono.Android.dll Returns the index of the last occurrence of the specified element in this list, or -1 if this list does not contain the element. C# 复制 [Android.Runtime.Register("lastIndexOf", "(Ljava/lang/Object;)I", "GetLastIndexOf_Ljava_lang_...
python有类似java的 lastIndexOf python代替java,最近在学习Python,感觉Python确实有她的魅力之处,与JAVA等其它OO语言对比,有其擅长处理的领域。虽然Python是解释型的语言,严格意义上不能和JAVA做对比,但我觉得在学习一个新事物时,与熟悉的事物比较,能更好的了解新
Find the last occurrence of "e" in a string, starting the search at position 5: publicclassMain{publicstaticvoidmain(String[]args){StringmyStr="Hello planet earth, you are a great planet.";System.out.println(myStr.lastIndexOf("e",5));}} ...