Valid Parentheses Problem Statement

Given a string 'STR' consisting solely of the characters “{”, “}”, “(”, “)”, “[” and “]”, determine if the parentheses are balanced.

Input:

The first line contains an integer 'T' representing the number of test cases. Each of the following T lines contains a string that you need to check for balanced parentheses.

Output:

For each test case, print a single line stating whether the string is balanced or not, with each result on a new line.

Example:

Input:

T = 2 STR = "{}[]()" STR = "{[}]"

Output:

"Balanced" "Not Balanced"

Constraints:

1

Question

Valid Parentheses Problem Statement

Given a string 'STR' consisting solely of the characters “{”, “}”, “(”, “)”, “[” and “]”, determine if the parentheses are balanced.

Input:

The first line contains an integer 'T' representing the number of test cases. Each of the following T lines contains a string that you need to check for balanced parentheses.

Output:

For each test case, print a single line stating whether the string is balanced or not, with each result on a new line.

Example:

Input:

T = 2
STR = "{}[]()"
STR = "{[}]"

Output:

"Balanced"
"Not Balanced"

Constraints:

1 <= T <= 10
1 <= N <= 10⁵

Note:

No need to print anything explicitly. Just implement the functionality to determine if the strings are balanced.

Accepted Answer

The task is to determine if a given string consisting of parentheses is balanced or not.

Use a stack data structure to keep track of opening parentheses.
Iterate through the string and push opening parentheses onto the stack.
When encountering a closing parenthesis, pop the top element from the stack and check if it matches the corresponding opening parenthesis.
If the stack is empty at the end of the iteration and all parentheses have been matched, the string is balanced.
If the stack is not empty or there is a mismatch in parentheses, the string is not balanced.

Valid Parentheses Problem Statement

Input:

Output:

Example:

Input:

Output:

Constraints:

Note:

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