Java Array Exercises: Find the index of an array element
Java Array: Exercise-6 with Solution
Write a Java program to find the index of an array element.
Pictorial Presentation:
Sample Solution:
Java Code:
public class Exercise6 {
public static int findIndex (int[] my_array, int t) {
if (my_array == null) return -1;
int len = my_array.length;
int i = 0;
while (i < len) {
if (my_array[i] == t) return i;
else i=i+1;
}
return -1;
}
public static void main(String[] args) {
int[] my_array = {25, 14, 56, 15, 36, 56, 77, 18, 29, 49};
System.out.println("Index position of 25 is: " + findIndex(my_array, 25));
System.out.println("Index position of 77 is: " + findIndex(my_array, 77));
}
}
Sample Output:
Index position of 25 is: 0 Index position of 77 is: 6
Flowchart:
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Previous: Write a Java program to test if an array contains a specific value.
Next: Write a Java program to remove a specific element from an array.
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Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
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