Leetcode Challenge 341 Flatten Nested List Iterator At Main

Leetcode Challenge 341 Flatten Nested List Iterator At Main Flatten nested list iterator you are given a nested list of integers nestedlist. each element is either an integer or a list whose elements may also be integers or other lists. implement an iterator to flatten it. In depth solution and explanation for leetcode 341. flatten nested list iterator in python, java, c and more. intuitions, example walk through, and complexity analysis. better than official and forum solutions.

Flatten Nested List Iterator Leetcode Implement the nestediterator class: nestediterator(list nestedlist) initializes the iterator with the nested list nestedlist. int next() returns the next integer in the nested list. boolean hasnext() returns true if there are still some integers in the nested list and false otherwise. Def hasnext(self): return self.ptr < len(self.arr) def dfs(self, nestedarr): for num in nestedarr: if num.isinteger(): . self.arr.append(num.getinteger()) else: . self.dfs(num.getlist()) where n n is the number of integers and d d is the nesting depth. 2. recursion (flatten and return) self.arr = self.dfs(nestedlist) . To implement the nestediterator class, we need to flatten a nested list of integers or other lists into a sequence of integers. the class should allow iterating over this flattened sequence using the next() and hasnext() methods. * you should not implement it, or speculate about its implementation * public interface nestedinteger { * * @return true if this nestedinteger holds a single integer, rather than a nested list. * public boolean isinteger (); * * @return the single integer that this nestedinteger holds, if it holds a single integer * return null if.

341 Flatten Nested List Iterator Programming Puzzles To implement the nestediterator class, we need to flatten a nested list of integers or other lists into a sequence of integers. the class should allow iterating over this flattened sequence using the next() and hasnext() methods. * you should not implement it, or speculate about its implementation * public interface nestedinteger { * * @return true if this nestedinteger holds a single integer, rather than a nested list. * public boolean isinteger (); * * @return the single integer that this nestedinteger holds, if it holds a single integer * return null if. We’ll explore the problem statement, design an efficient solution, provide a step by step pseudocode, analyze its complexity, and implement a python solution for a nestediterator class that makes. Flatten nested list iterator leetcode 341 python neetcodeio 277k subscribers 270. Class nestediterator: def init (self, nestedlist: list[nestedinteger]): self.stack: list[nestedinteger] = [] self.addinteger(nestedlist) def next(self) > int: return self.stack.pop().getinteger() def hasnext(self) > bool: while self.stack and not self.stack[ 1].isinteger(): self.addinteger(self.stack.pop().getlist()) return self.stack. Nestediterator (list nestedlist) initializes the iterator with the nested list nestedlist. int next () returns the next integer in the nested list. boolean hasnext () returns true if there are still some integers in the nested list and false otherwise.