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Expression contains redundant bracket or not | Function to check redundant brackets in a balanced expression.
create a stack of characters.
Iterate through the given expression.
if current character is close parenthesis ')  .
If immediate pop have open parenthesis ' ( ' duplicate brackets found.
Check for operators in expression.
Fetch top element of stack.
If operators not found.
append open parenthesis ' ( ' ,.
operators and operands to stack.
Function to check redundant brackets.
Driver code"
Solution in Python:

What is a code to expression contains redundant bracket or not and the other steps required?
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#Here is code to expression contains redundant bracket or not and the other steps required.
 def checkRedundancy ( Str ) :
	st = [ ]
	for ch in Str :
		if ( ch == ' ) ' ) :
			top = st [ - 1 ]
			st . pop ( )
			flag = True
			while ( top != ' ( ' ) :
				if ( top == ' + ' or top == ' - ' or top == ' * ' or top == ' / ' ) :
					flag = False
				top = st [ - 1 ]
				st . pop ( )
			if ( flag == True ) :
				return True
		else :
			st . append ( ch )
	return False
def findRedundant ( Str ) :
	ans = checkRedundancy ( Str )
	if ( ans == True ) :
		print ( " Yes " )
	else :
		print ( " No " )
if __name__ == ' _ _ main _ _ ' :
	Str = " ( ( a + b ) ) "
	findRedundant ( Str )
	Str = " ( a + ( b ) / c ) "
	findRedundant ( Str )
	Str = " ( a + b * ( c - d ) ) "
	findRedundant ( Str )