Create a class ArrayWrapper that accepts an array of integers in its constructor. This class should have two features:
+ operator, the resulting value is the sum of all the elements in both arrays.String() function is called on the instance, it will return a comma separated string surrounded by brackets. For example, [1,2,3].
Example 1:
Input: nums = [[1,2],[3,4]], operation = "Add" Output: 10 Explanation: const obj1 = new ArrayWrapper([1,2]); const obj2 = new ArrayWrapper([3,4]); obj1 + obj2; // 10
Example 2:
Input: nums = [[23,98,42,70]], operation = "String" Output: "[23,98,42,70]" Explanation: const obj = new ArrayWrapper([23,98,42,70]); String(obj); // "[23,98,42,70]"
Example 3:
Input: nums = [[],[]], operation = "Add" Output: 0 Explanation: const obj1 = new ArrayWrapper([]); const obj2 = new ArrayWrapper([]); obj1 + obj2; // 0
Constraints:
0 <= nums.length <= 10000 <= nums[i] <= 1000Note: nums is the array passed to the constructorThis approach leverages operator overloading (or language-specific methods) to define how instances of ArrayWrapper behave when used with the '+' operator and the String conversion function. We'll override/add appropriate methods to customize these operations:
ArrayWrapper instances.This Python solution defines an ArrayWrapper class. It uses the magic methods __add__ for adding two instances together and __str__ for converting an instance to its string representation. __add__ method returns the sum of the numbers in both arrays, while __str__ method returns the string representation.
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C
Time Complexity: O(n + m), where n and m are the lengths of the two arrays in the instances being added.
Space Complexity: O(1), as we do not use any additional space.
This approach focuses on languages that support the implementation of interfaces to achieve the desired functionality. We utilize relevant interfaces or methods required to override the behavior of arithmetic operations and object-to-string conversion.
This Python approach assumes an interface-like setup using methods, providing add and to_string methods to implement addition and string conversion respectively.
Java
Time Complexity: O(n + m), for summing elements of both arrays.
Space Complexity: O(1), no additional space required.
| Approach | Complexity |
|---|---|
| Operator Overloading to Implement Addition and String Conversion | Time Complexity: O(n + m), where n and m are the lengths of the two arrays in the instances being added. |
| Interface Implementation for Addition and String Conversion | Time Complexity: O(n + m), for summing elements of both arrays. |
Product of Array Except Self - Leetcode 238 - Python • NeetCode • 747,485 views views
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