**********************************************************************************************
Aadhar Card Permutation Table
class VerhoeffAlgorithm{ static int[][] d = new int[][] { {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, {1, 2, 3, 4, 0, 6, 7, 8, 9, 5}, {2, 3, 4, 0, 1, 7, 8, 9, 5, 6}, {3, 4, 0, 1, 2, 8, 9, 5, 6, 7}, {4, 0, 1, 2, 3, 9, 5, 6, 7, 8}, {5, 9, 8, 7, 6, 0, 4, 3, 2, 1}, {6, 5, 9, 8, 7, 1, 0, 4, 3, 2}, {7, 6, 5, 9, 8, 2, 1, 0, 4, 3}, {8, 7, 6, 5, 9, 3, 2, 1, 0, 4}, {9, 8, 7, 6, 5, 4, 3, 2, 1, 0} }; static int[][] p = new int[][] { {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}, {1, 5, 7, 6, 2, 8, 3, 0, 9, 4}, {5, 8, 0, 3, 7, 9, 6, 1, 4, 2}, {8, 9, 1, 6, 0, 4, 3, 5, 2, 7}, {9, 4, 5, 3, 1, 2, 6, 8, 7, 0}, {4, 2, 8, 6, 5, 7, 3, 9, 0, 1}, {2, 7, 9, 3, 8, 0, 6, 4, 1, 5}, {7, 0, 4, 6, 9, 1, 3, 2, 5, 8} }; static int[] inv = {0, 4, 3, 2, 1, 5, 6, 7, 8, 9}; public static boolean validateVerhoeff(String num){ int c = 0; int[] myArray = StringToReversedIntArray(num); for (int i = 0; i < myArray.length; i++){ c = d[c][p[(i % 8)][myArray[i]]]; } return (c == 0); } private static int[] StringToReversedIntArray(String num){ int[] myArray = new int[num.length()]; for(int i = 0; i < num.length(); i++){ myArray[i] = Integer.parseInt(num.substring(i, i + 1)); } myArray = Reverse(myArray); return myArray; } private static int[] Reverse(int[] myArray){ int[] reversed = new int[myArray.length]; for(int i = 0; i < myArray.length ; i++){ reversed[i] = myArray[myArray.length - (i + 1)]; } return reversed; } }