1.1 Check if a String Array contains a certain value “A”. StringArrayExample1.java package com.mkyong.core; import java.util.Arrays; import java.util.List; public class StringArrayExample1 { public static void main(String[] args) { String[] alphabet = new String[]{"A", "B", "C"}...
在Java中判断数组中是否存在某个字符串可以通过循环遍历数组并逐个比较元素来实现。下面是一个示例代码: publicclassArrayStringCheck{publicstaticbooleancontainsString(String[]array,Stringtarget){for(Stringelement:array){if(element.equals(target)){returntrue;}}returnfalse;}publicstaticvoidmain(String[]args){Str...
1.1 Check if a String Array contains a certain value “A”. StringArrayExample1.java package com.mkyong.core; import java.util.Arrays; import java.util.List; public class StringArrayExample1 { public static void main(String[] args) { String[] alphabet = new String[]{"A", "B", "C"}...
public static boolean useSet(String[] arr, String targetValue) { Set<String> set = new HashSet<String>(Arrays.asList(arr)); return set.contains(targetValue); } 使用简单的循环语句: public static boolean useLoop(String[] arr, String targetValue) { for (String s : arr) { if (s.equals...
Write a Java program to accept two strings and test if the second string contains the first one.Visual Presentation:Sample Solution:Java Code:// Importing the required Java utilities package import java.util.*; // Defining a class named Solution public class Solution { // Method to check if...
Check array contains element String[]fruits=newString[]{"banana","guava","apple","cheeku"};booleanresult=Arrays.asList(fruits).stream().anyMatch(x->x.equalsIgnoreCase("apple"));//truebooleanresult=Arrays.asList(fruits).stream().anyMatch(x->x.equalsIgnoreCase("lion"));//false ...
If your array is sorted, you can use the Arrays binarySearch() method to check if the array contains the given value or not.String[] vowels = { "A", "I", "E", "O", "U" }; System.out.println("Unsorted Array = " + Arrays.toString(vowels)); Arrays.parallelSort(vowels); System...
publicclassCharArrayExample{publicstaticvoidmain(String[]args){String text="Example String";char ch='e';boolean containsChar=false;for(char c:text.toCharArray()){if(c==ch){containsChar=true;break;}}System.out.println("字符串中是否包含字符 '"+ch+"': "+containsChar);}} ...
在数组无序的情况下,性能最佳的就是使用循环,比采用集合方式好,毕竟,采用集合的方式还得把数组放入集合。 如果数组是有序的,则使用 Arrays.binarySearch() 是最佳的方法。 参考资料:https://www.programcreek.com/2014/04/check-if-array-contains-a-value-java/...
JavaArray<T>.Contains(T) 方法 參考 定義 命名空間: Android.Runtime 組件: Mono.Android.dll C# publicboolContains(T item); 參數 item T 傳回 Boolean 實作 Contains(T) 備註 此頁面的部分是根據 Android 開放原始碼專案所建立和共用的工作進行修改,並根據 Creative Commons 2.5 屬性授權中所述的詞彙使用。