reverseastring.py

def createStack():
    stack= []
    return stack
def size(stack):
    return len(stack)
def isEmpty(stack):
    if size(stack) == 0:
        return true
def push(stack, item):
    stack.append(item)
def pop(stack):
    if isEmpty(stack): return
    return stack.pop()
def reverse(string):
    n = len(string)
    stack = createStack()
    for i in range(0,n,1):
        push(stack, string[i])

    string = ""

    for i in range(0,n,1):
        string += pop(stack)
    return string  

#Driver Code
string = "GeeksQuiz"
string = reverse(string)
print('Reversed String is' + string)