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Check if a value is present in an Array in Java
At first sort the array −
int intArr[] = {55, 20, 10, 60, 12, 90, 59};
// sorting array
Arrays.sort(intArr);Now, set the value to be searched in an int variable −
int searchVal = 12;
Check for the presence of a value in an array −
int retVal = Arrays.binarySearch(intArr,searchVal); boolean res = retVal > 0 ? true : false;
Following is an example to check if a value is present in an array −
Example
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
// initializing unsorted int array
int intArr[] = {55, 20, 10, 60, 12, 90, 59};
// sorting array
Arrays.sort(intArr);
// let us print all the elements available in list
System.out.println("The sorted int array is:");
for (int number : intArr) {
System.out.println("Number = " + number);
}
// entering the value to be searched
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);
}
}Output
The sorted int array is: 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
Updated on: 20-Sep-2019
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