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Leetcode Çözümleri – Shuffle String

Leetcode içerisinde bulunan “Shuffle String” sorusunun açıklaması ve çözümü. Bu soruda sizi verilen bir string‘in her bir karakteri, yine bir tam sayı dizisi olarak verilen index’lerde olacak şekilde shuffle etmeniz isteniyor.

► Leetcode 1528. Shuffle String:

► Problem açıklaması:

Given a string s and an integer array indices of the same length.

The string s will be shuffled such that the character at the ith position moves to indices[i] in the shuffled string.

Return the shuffled string.

Example 1:

Input: s = “codeleet”, indices = [4,5,6,7,0,2,1,3]

Output: “leetcode”

Explanation: As shown, “codeleet” becomes “leetcode” after shuffling.

Example 2:

Input: s = “abc”, indices = [0,1,2]

Output: “abc”

Explanation: After shuffling, each character remains in its position.

Example 3:

Input: s = “aiohn”, indices = [3,1,4,2,0]

Output: “nihao”

Example 4:

Input: s = “aaiougrt”, indices = [4,0,2,6,7,3,1,5]

Output: “arigatou”

Example 5:

Input: s = “art”, indices = [1,0,2]

Output: “rat”


s.length == indices.length == n

1 <= n <= 100

s contains only lower-case English letters.

0 <= indices[i] < n

All values of indices are unique (i.e. indices is a permutation of the integers from 0 to n – 1).

Microsoft Mülakat Sorusu – Spiral Matrix

LeetCode içerisinde bulunan “Spiral Matrix” sorusunun açıklaması ve çözümü. Bu soruda size verilen bir matrix (C# için jagged array) elemanlarını spiral bir şekilde geriye döndürmeniz isteniyor.

► LeetCode 54. Spiral Matrix:

► Problem açıklaması:

Given an m x n matrix, return all elements of the matrix in spiral order.

Example 1:

Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]

Output: [1,2,3,6,9,8,7,4,5]

Example 2:

Input: matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]

Output: [1,2,3,4,8,12,11,10,9,5,6,7]


m == matrix.length

n == matrix[i].length 1 <= m, n <= 10

-100 <= matrix[i][j] <= 100

Hackerrank “30 Days of Code” Çözümleri – Day 12: Inheritance

Hackerrank’in 30 Days of Code içerisinde bulunan “Day 12: Inheritance” sorusunun açıklaması ve çözümü. Bu soruda inheritance kavramına göz atıyoruz.

► Hackerrank 30 Days of Code Çözümleri – Day 12: Inheritance:

► Problem açıklaması:


Today, we’re delving into Inheritance. Check out the attached tutorial for learning materials and an instructional video.


You are given two classes, Person and Student, where Person is the base class and Student is the derived class. Completed code for Person and a declaration for Student are provided for you in the editor. Observe that Student inherits all the properties of Person.

Complete the Student class by writing the following:

A Student class constructor, which has parameters:

A string, firstName.

A string, lastName.

An integer, idNumber.

An integer array (or vector) of test scores, scores.

A char calculate() method that calculates a Student object’s average and returns the grade character representative of their calculated average:

Input Format

The locked stub code in the editor reads the input and calls the Student class constructor with the necessary arguments. It also calls the calculate method which takes no arguments.

The first line contains firstName, lastName, and idNumber, separated by a space. The second line contains the number of test scores. The third line of space-separated integers describes scores.

Output Format

Output is handled by the locked stub code. Your output will be correct if your Student class constructor and calculate() method are properly implemented.

Sample Input

Heraldo Memelli 8135627


100 80

Sample Output

Name: Memelli, Heraldo

ID: 8135627

Grade: O