Code Review Questions on Functions and Error Handling

A sequence of characters (letters, numbers, symbols) enclosed in double quotes. Used to store and manipulate textual data.

A function that reverses the order of characters in a string and stores them in an array.

A function that takes two strings representing numbers and adds them together, returning the sum as a string.

A constant integer variable set to 60, likely representing the maximum size or capacity of an array or data structure used in the code.

A file stream object used to read data from a file named "numbers.txt".

An array allows you to store and manipulate individual digits of a number, making it possible to implement arithmetic operations on large numbers digit by digit. This is especially useful when dealing with numbers that exceed the maximum size of standard integer data types.

Arrays provide flexibility in storing and accessing digits of a number, allowing for efficient manipulation during calculations. This is particularly helpful when dealing with long numbers that might exceed the capacity of standard integer data types.

Using an array allows you to represent and process numbers of arbitrary length. This is crucial when dealing with numbers exceeding the limits of standard integer data types.

Because arrays can store individual digits, it facilitates carrying over values during summation. This simplifies the implementation of addition for multi-digit numbers.

Arrays provide a structured way to organize and access the digits of a number, making it easier to perform arithmetic operations like addition. This method is particularly useful for dealing with numbers that might exceed the limits of standard integer data types.

Arrays allow you to store and manipulate individual digits of a number, making it possible to perform addition on numbers that exceed the size limitations of standard integer data types. This is especially useful when dealing with large numbers that might be too big to fit within the typical range of integer variables.

Arrays provide flexibility in storing and accessing digits of a number, allowing for efficient manipulation during calculations. Using an array lets us perform operations on large numbers digit by digit, without being limited by the bounds of integer data types.

Arrays can represent and process numbers of arbitrary length, making them ideal for dealing with numbers exceeding the capacity of standard integer data types.

A systematic process where developers examine each other's code to identify potential issues, improve code quality, and ensure adherence to coding standards.

Contribute to a shared understanding of the codebase and promote knowledge transfer amongst team members.

Identify and rectify bugs, vulnerabilities, and areas for optimization.

Facilitate knowledge sharing and promote a collaborative development environment.

Developers work together, one typing while the other reviews or gives input.

Feedback, revision, and closure are the key steps involved in the code review process. It ensures that code meets quality standards, and improves through constructive feedback and collaboration.

Reviewers provide constructive feedback identifying issues and suggesting improvements. This allows for a clear understanding of problems and potential solutions.

Developers address feedback, fix issues, and implement improvements based on the suggestions made in the review process.

Closing the review loop signifies the resolution of identified issues and the implementation of the feedback provided. It marks the completion of the review.

Selecting suitable tools to support the code review process is essential for effective feedback organization, collaboration, and tracking progress.

The reason for reversing the elements in the ans array is to obtain the final sum in the correct order. The array is filled in reverse order because each element represents a digit in the sum, with the least significant digit at the end of the array. By reversing the elements in the array, we ensure that the digits are concatenated in the correct order to form the final sum.

The digits are added one by one, from the least significant digit to the most significant digit. The carryOver variable stores any overflow from the previous digit addition, ensuring accurate calculation of the sum.

The code iterates through the array from the end (highest index) to the beginning (lowest index) to avoid printing leading zeros. The flag variable is used to indicate whether a non-zero digit has been encountered, ensuring that only digits after the first non-zero digit are included in the final sum.

The add2Nums function likely uses a similar approach to add two numbers by iterating through their digits. Since the ans array is initialized to zero, the code assumes that the sum will be less than or equal to MAX, which limits the size of the array. The algorithm also focuses on processing the digits in reverse order, which, as mentioned, results in a reversed sum.

This code uses an array to store the digits of a sum. The array effectively represents a number with a variable length, enabling the processing of large numbers that might exceed the limits of standard integer data types. The advantage of using an array here is that it allows you to represent and manipulate numbers of arbitrary size without being limited by the size of standard integer data types. This capability makes it suitable for calculations involving large or arbitrarily sized numbers.

A sequence of characters (letters, numbers, symbols) enclosed in double quotes. Used to store and manipulate textual data.

The use of an array allows for the storage of individual digits of very large numbers, which are essentially beyond the capacity of traditional integer data types.

The code reverses the order of digits in the ans array because the addition is performed from the least significant digit to the most significant digit. By reversing the array, the result is obtained in the correct sequence.

This approach optimizes the algorithm. It iterates from the end of the array to the beginning to avoid printing leading zeros. The purpose of the flag is to ensure that only digits after the first non-zero digit are included, leading to the correct representation of the sum.

When a number is bigger than the maximum value a data type can hold, the remaining digits are carried over to the next place value. In addition, carry-over allows for accurate calculations of the sum. For example, when adding 5 and 8, the result is 13. The digit 3 is the current place value result, and the digit 1 is added to the next higher place value.

It is a container for storing a sequence of data, in this case, digits of a number. It allows you to represent and process numbers that exceed the capacity of standard integer data types. For example, to represent a number with 50 digits, you need a container that can store 50 individual digits - this is where an array is used to store these digits.

The ans array is filled in reverse order, storing the least significant digit at the end of the array. Reversing the ans array ensures that the digits are concatenated in the correct order to form the final sum. It's like reading a number from right to left, starting with the units digit and moving towards the left.

A data type that stores a sequence of characters, frequently used to represent text or numbers, in this example for handling arbitrarily large numbers.

It represents a number through its individual digits, allowing calculations on numbers exceeding the limits of standard integer types.

This function calculates the sum of two numbers represented as strings, digit by digit, incorporating carry-over logic to handle the addition of large numbers.