Question

accessing each element in array only once called ​

Answer 1

Answer:

Method-1: Using Sorting.

• Sort the array.

• Check for each element at index i (except the first and last element), if arr[i] != arr[i-1] && arr [i] != arr[i+1]

• For the first element, check if arr[0] != arr[1].

• For the last element, check if arr[n-1] != arr[n-2].

Answer 2

Accessing each element in the array only once is called ​traversing.

• Traversing is a process in which each element of the array is accessed at least once.

• In most of the languages, the index starts with 0 and the last index is (n-1).

• the index can be used to access all elements or for multiple uses as each index has a unique element stored there.