Driver code
public static void main ( String [ ] args ) { int arr [ ] = { 1 , 3 , 4 , 7 , 5 , 3 , 1 } ; int n = arr . length ; int k = 4 ; if ( checkArray ( n , k , arr ) ) System . out . print ( " Yes " ) ; else System . out . print ( " No " ) ; } }