5) Insertion Sort in Java
We can create a java program to sort array elements using insertion sort. Insertion is good for small elements only because it requires more time for sorting large number of elements.
Let's see a simple java program to sort an array using insertion sort algorithm.
public class InsertionSortExample {
public static void insertionSort(int array[]) {
int n = array.length;
for (int j = 1; j < n; j++) {
int key = array[j];
int i = j-1;
while ( (i > -1) && ( array [i] > key ) ) {
array [i+1] = array [i];
i--;
}
array[i+1] = key;
}
}
public static void main(String a[]){
int[] arr1 = {9,14,3,2,43,11,58,22};
System.out.println("Before Insertion Sort");
for(int i:arr1){
System.out.print(i+" ");
}
System.out.println();
insertionSort(arr1);//sorting array using insertion sort
System.out.println("After Insertion Sort");
for(int i:arr1){
System.out.print(i+" ");
}
}
}