检查Java中的数组中是否存在值
首先对数组进行排序-
int intArr[] = {55, 20, 10, 60, 12, 90, 59};
//排序数组
Arrays.sort(intArr);现在，在int变量中设置要搜索的值-
int searchVal = 12;
检查数组中是否存在值-
int retVal = Arrays.binarySearch(intArr,searchVal); boolean res = retVal > 0 ? true : false;
以下是检查数组中是否存在值的示例-
示例
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
//初始化未排序的int数组
int intArr[] = {55, 20, 10, 60, 12, 90, 59};
//排序数组
Arrays.sort(intArr);
//让我们打印列表中所有可用的元素
System.out.println("排序的int数组是：");
for (int number : intArr) {
System.out.println("Number = " + number);
}
//输入要搜索的值
int searchVal = 12;
int retVal = Arrays.binarySearch(intArr,searchVal);
boolean res = retVal > 0 ? true : false;
System.out.println("Is element 12 in the array? = " + res);
System.out.println("The index of element 12 is : " + retVal);
}
}输出结果
排序的int数组是： Number = 10 Number = 12 Number = 20 Number = 55 Number = 59 Number = 60 Number = 90 Is element 12 in the array? = true The index of element 12 is : 1
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