IDEMIA Commercial Manager Interview Questions and Answers

Sorting algorithm is a method of arranging elements in a specific order.

• Common sorting algorithms include bubble sort, insertion sort, selection sort, merge sort, quick sort, and heap sort.

• The choice of sorting algorithm depends on the size of the data set, the data type, and the desired time complexity.

• Sorting algorithms can be implemented in various programming languages such as Java, Python, and C++.

Reverse a string and find a duplicate in an array of strings.

• To reverse a string, we can use the built-in reverse() method or loop through the string and append each character to a new string in reverse order.

• To find a duplicate in an array of strings, we can use a hash table to keep track of the frequency of each string and return the first string with a frequency greater than 1.