Normal comparison , move starting index of one array k / 2 to the right
if ( arr1 [ curr + st1 - 1 ] < arr2 [ curr + st2 - 1 ] ) : NEW_LINE INDENT return kth ( arr1 , arr2 , m , n , k - curr , st1 + curr , st2 ) NEW_LINE DEDENT else : NEW_LINE INDENT return kth ( arr1 , arr2 , m , n , k - curr , st1 , st2 + curr ) NEW_LINE DEDENT