get index of an elment java code example
Example 1: java indexof array
java.util.Arrays.asList(theArray).indexOf(o)
Example 2: get index of element in array java
System.out.println(new String(list).indexOf("e"));
Example 3: return matching index array java
public class compareArray{
public static void main(String[] args){
int[a] = {1,4,5,7};
int[b] = {6,4,3,7};
int[] ab = new int[4];
for(int i = 0; i<a.length; i++; )
{
if(a[i] == b[i])
{
int[] ab = new int[4];
Arraylist<Integer> al = new Arraylist<Integer>();
for(int i = 0; i < a.length; i++; )
if(a[i] == b[i])
{
al.add(a[i]);
}
}
Object[] c= al.toArray();
for(Object ob : c)
{
System.out.println(obj);
}
Example 4: get index of an array element java
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));
}
}