Length of array elements (with. Java)

This is an article that looks into the “length of array elements” issue.

As I solve coding test problems, I look back on the problems I solved and look into different solution methods to learn more.

Let’s look at the problem first.

problem

A string array strlist is given as a parameter.

Complete the solution function to retrun an array containing the length of each element of strlist.

Restrictions

• 1 ≤ length of strlist element ≤ 100
• strlist consists of lowercase letters, uppercase letters, and special characters.

Input/Output Example

My solution to the problem

class Solution {
     public int[] solution(String[] strlist) {
         int[] answer = new int[strlist.length];
         int count = 0;
         for(String temp : strlist){
             answer[count++] = temp.length();
         }
         return answer;
     }
}

Solution explanation

• Array initialization: Initialize the array answer to store the result as long as the given string array strlist through int[] answer = new int[strlist.length];
• Calculating string length: While iterating through the array strlist using a for-each statement, calculate the length of each string with temp.length() and store it in the answer array at the corresponding index.
• Index increase: After storing the length of each string, the count variable is increased so that the value can be stored at the next index.
• Result return: Calculate the length of all strings, store them in an array, and finally return the result array answer.

Code Advantages

• Simple logic: It consists of simple yet efficient logic that calculates the length of the string.
• Scalability: Array initialization is performed dynamically so that it can respond flexibly according to the length of the array, making it possible to respond to a variety of inputs.

Code Disadvantages

• Lack of error handling: The current code does not consider exception handling, such as when the input array is null. It is a good idea to add appropriate exception handling.
• Fixed return value data type: The current code returns the result array as int[], but there is a lack of logic to respond when various data types are required depending on the input. There is a need to improve it by considering the diversity of inputs and returns.