Driver Code
public static void main ( String [ ] args ) { int arr [ ] = { 1 , 0 , 2 , 2 , 5 , 5 , 5 } ; int N = arr . length ; int K = 1 ; int length = longestSubarray ( arr , N , K ) ; if ( length == 1 ) System . out . print ( - 1 ) ; else System . out . print ( length ) ; } }