#Help using teque

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whole topaz
snow cliffBOT
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<@&987246883653156906> please have a look, thanks.

snow cliffBOT
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To implement the pushMiddle function in the Teque problem, you need to consider a few things:

  1. Determine the current size of the front and back deques. If they are equal, you can insert the element in either deque. If they are not equal, you need to balance them.

  2. If the front deque has more elements than the back deque, move one element from the front deque to the back deque.

  3. If the back deque has more elements than or equal to the front deque, move one element from the back deque to the front deque.

  4. After balancing, insert the new element in either of the deques based on their sizes.

Here's an example implementation of pushMiddle using Python:

# 
from collections import deque

class Teque:
    def __init__(self):
        self.front = deque()
        self.back = deque()

    def pushFront(self, x):
        self.front.appendleft(x)
        self.balance()

    def pushBack(self, x):
        self.back.append(x)
        self.balance()

    def pushMiddle(self, x):
        if len(self.front) > len(self.back):
            self.back.appendleft(self.front.pop())
            self.front.append(x)
        else:
            self.front.append(self.back.popleft())
            self.back.appendleft(x)
        self.balance()

    def balance(self):
        if len(self.front) > len(self.back) + 1:
            self.back.appendleft(self.front.pop())
        elif len(self.back) > len(self.front):
            self.front.append(self.back.popleft())

    def get(self, i):
        if i < len(self.front):
            return self.front[i]
        else:
            return self.back[i - len(self.front)]

teque = Teque()
n = int(input())
for _ in range(n):
    command, value = input().split()
    value = int(value)
    if command == "push_front":
        teque.pushFront(value)
    elif command == "push_back":
        teque.pushBack(value)
    elif command == "push_middle":
        teque.pushMiddle(value)
    else:
        index = int(value)
        print(teque.get(index))
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In this implementation, we use two deques (front and back) to store the elements. The balance function is called after each push operation to ensure that the deques are balanced.

The get function retrieves the element at the given index by checking if it belongs to the front or back deque.

Note: This implementation assumes that the input commands are valid and do not exceed the limits of the problem.

whole topaz
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The teque supports the following four operations:

push_back x: insert the element x into the back of the teque.
push_front x: insert the element x into the front of the teque.
push_middle x: insert the element x into the middle of the teque. The inserted element x now becomes the new middle element of the teque. If k is the size of the teque before the insertion, the insertion index for x is (k+1) / 2 (using 0-based indexing).

get i: prints out the ith index element (0-based) of the teque.

Input
The first line contains an integer N denoting the number of operations for the teque. Each of the next N lines contains a denoting one of the above commands, followed by one integer x. We guarantee that the teque is not empty when any get command is given.

Output
For each get i command, print the value inside the ith index element of the teque in a new line.

Warning
The I/O files are large. Please use fast I/O methods.

in java

viral magnet
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so you're taking floor value in case when k is an even value?

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