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Problem: Nested List Weight Sum II

med
30 min
Explore how to solve the Nested List Weight Sum II problem by calculating integer weights based on their depth within nested lists. Understand how to apply tree depth-first search techniques to compute the weighted sum efficiently. This lesson enhances your ability to handle nested data structures and depth-related calculations in coding interviews.

Statement

Given a nested list of integers, nested_list, where each element can either be an integer or a list, which can contain integers or more lists, return the sum of each integer in nested_list multiplied by its weight.

The weight of an integer is calculated as max_depth minus the depth of the integer plus one.

The depth of an integer is defined as the number of nested lists it is contained within. For instance, the value of each integer in the list [1,[2,2],[[3],2],1] is equal to its depth. Let max_depth represent the maximum depth of any integer in the nested_list.

Constraints:

  • 11 \lenested_list.length 50\le 50

  • The values of the integers in the nested list are in the range [100,100][-100, 100]

  • max_depth 50\le 50

Tap here to switch tabs
Problem
Ask
Submissions

Problem: Nested List Weight Sum II

med
30 min
Explore how to solve the Nested List Weight Sum II problem by calculating integer weights based on their depth within nested lists. Understand how to apply tree depth-first search techniques to compute the weighted sum efficiently. This lesson enhances your ability to handle nested data structures and depth-related calculations in coding interviews.

Statement

Given a nested list of integers, nested_list, where each element can either be an integer or a list, which can contain integers or more lists, return the sum of each integer in nested_list multiplied by its weight.

The weight of an integer is calculated as max_depth minus the depth of the integer plus one.

The depth of an integer is defined as the number of nested lists it is contained within. For instance, the value of each integer in the list [1,[2,2],[[3],2],1] is equal to its depth. Let max_depth represent the maximum depth of any integer in the nested_list.

Constraints:

  • 11 \lenested_list.length 50\le 50

  • The values of the integers in the nested list are in the range [100,100][-100, 100]

  • max_depth 50\le 50