PushFront inserts a new element e with value v at the front of list l and returns e.

Next returns the next list element or nil.

PushFront inserts a new element e with value v at the front of list l

Return in how many possible ways we can run up the stairs

Front returns the first element of list l or nil.

@param args

PushBack inserts a new element e with value v at the back of list l and returns e.

Remove the top element from the stack and return it's value If the stack is empty, return maxInt, error

Sets k-th most-significant bit.

insertValue is a convenience wrapper for insert(&Element{Value: v}, at).

Len returns the number of elements of list l. The complexity is O(1).

Pushes/inserts a value at the end/tail of the queue. Note: this function does mutate the queue. go-routine safe.

Return the path from (row, column) to (x - 1, y - 1)

insert inserts e after at, increments l.len, and returns e.

Mark (x, y) as off-limits