Find frequency of 2 in sorted array of integers in log(n) time.

• Use binary search to find first and last occurrence of 2 in array.

• Calculate frequency by subtracting last index from first index and addi...read more

Time complexity isO(log)n

Time complexity isO(log)n

Time complexity isO(log)n

Time complexity is o(logn)

Time complexity is O(log(n).

Ues binary search to find and last occurrence of 2in array

Time complexity is 0

Time complexity is 0(log(n))

Time complexity is o(login)

Calculate frequency by subtracting last index from first index and adding 1

Calculate frequency by subtracting last index from first index and adding 1

Do this without traversing the complete array expected time complexity is less then 0(n)

Calculate frequency by substacting last index from 1 index and adding1

Time complexity is O(login)

Frequency of 2in the array is<

Use binary search to find first and last occurrence of in array

Calculate frequency by substacting last index from 1 index and adding1

Given sorted array arr positive

• Calculate frequency by subtracting last index from first index and adding 1.

• Time complexity is O(log(n))

Use binary search to find first and last occurrence of 2 in arrayUse binary search to find first and last occurrence of 2 in array

1. Use binary search to find the first occurrence of 2 in the array.

2. Use binary search to find the last occurrence of 2 in the array.

3. Return the difference of the two indices plus 1.

For example, if the arr...read more

• Use binary search to find first and last occurrence of 2 in array.

• Calculate frequency by subtracting last index from first index and adding 1.

• Time complexity is O(log(n)).

// C++ program to count occurrences of an element

#include

using namespace std;

// Returns number of times x occurs in arr[0.]

int(int arr[], int n, int x)

{

int res = 0;

for (int i=0; i

...read more

First occurence,last occurence

Time complexity is O(log(n)).

Last occurrance - first occurrance+1

Add 2 array then divided by total number of araay

Last occurrence - first occurrence + 1

(last_occurence - first_occurence + 1)

LastLast occurrence -first occurrence+1

Last occurrence -first occurrence+1

Th e idea take from last occurence

Last  occurrence and first occurrence+1  or any alphabet like (X or Y) which means that can be mention anything in first and last . 

Last_occurence-frist_occurence+1

(last_occurence - first_occurence + 1)