Find if a number is part of AP whose first element and difference are given | Java program to check if x exist or not in the given AP . ; returns yes if exist else no . ; If difference is 0 , then x must be same as a . ; Else difference between x and a must be divisible by d . ; Driver code .
class GFG { static boolean isMember ( int a , int d , int x ) { if ( d == 0 ) return ( x == a ) ; return ( ( x - a ) % d == 0 && ( x - a ) / d >= 0 ) ; } public static void main ( String args [ ] ) { int a = 1 , x = 7 , d = 3 ; if ( isMember ( a , d , x ) ) System . out . println ( " Yes " ) ; else System . out . println ( " No " ) ; } }