Function to return the minimum number of delete operations
def findMinimumDeletion ( l , r , dp , s ) : NEW_LINE INDENT if l > r : NEW_LINE INDENT return 0 NEW_LINE DEDENT if l == r : NEW_LINE INDENT return 1 NEW_LINE DEDENT if dp [ l ] [ r ] != - 1 : NEW_LINE INDENT return dp [ l ] [ r ] NEW_LINE DEDENT DEDENT