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#385 - Mini Parser

Medium • View on LeetCode • View on GitHub

Problem Description

Given a string s represents the serialization of a nested list, implement a parser to deserialize it and return the deserialized NestedInteger.

Each element is either an integer or a list whose elements may also be integers or other lists.

Solution

/**
 * @param {string} s
 * @return {NestedInteger}
 */
var deserialize = function(s) {
  return traverse(JSON.parse(s));

  function traverse(str) {
    if (Number.isInteger(str)) {
      return new NestedInteger(str);
    }
    const value = new NestedInteger();
    for (const s of str) {
      value.add(traverse(s));
    }
    return value;
  };
};

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