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GO Classes DPP | PYTHON & DSA |QUEUE

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Consider a function modify $(\mathrm{Q})$ that uses a single temporary stack $\mathrm{S}$ to process a queue $\mathrm{Q}$. Initially, $\mathrm{Q}$ contains the elements: $\mathrm{Q}=[10,20,30,40]$ (with $10$ at the $\text{FRONT}$).

The $\mathrm{modify(Q)}$ function executes the following steps:

  1. While $\mathrm{Q}$ is not empty: $\text{DEQUEUE}$ element from $\mathrm{Q}$ and PUSH onto $\mathrm{S}$.
     
  2. While $\mathrm{S}$ is not empty: $\text{POP}$ element from $\mathrm{S}$ and ENQUEUE back into $\mathrm{Q}$.

What will be the elements of $\mathrm{Q}$ after the function modify $\mathrm{(Q)}$ completes?

  1. $[10,20,30,40]$ (Unchanged) 
     
  2. $[40,30,20,10]$ (Reversed) 
     
  3. $[20,30,40,10]$ (Rotated)
     
  4. $[10,40,30,20]$ (Partially Reversed)

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