Tag Archives: check if n and it's double exist

LeetCode Çözümleri – Check If N and Its Double Exist

LeetCode içerisinde bulunan “Check If N and Its Double Exist” sorusunun açıklaması ve çözümü. Bu soruda sizi verilen bir tam sayı dizisinde, herhangi bir elemanın iki katı veya yarısı olan başka bir eleman var mı diye soruluyor.

► LeetCode 1346. Check If N and Its Double Exist: https://leetcode.com/problems/check-if-n-and-its-double-exist

► Problem açıklaması:

Given an array arr of integers, check if there exists two integers N and M such that N is the double of M ( i.e. N = 2 * M).

More formally check if there exists two indices i and j such that :

i != j

0 <= i, j == arr.length

arr[i] == 2 * arr[j]

Example 1:

Input: arr = [10,2,5,3]

Output: true

Explanation: N = 10 is the double of M = 5,that is, 10 = 2 * 5.

Example 2:

Input: arr = [7,1,14,11]

Output: true

Explanation: N = 14 is the double of M = 7,that is, 14 = 2 * 7.

Example 3:

Input: arr = [3,1,7,11]

Output: false

Explanation: In this case does not exist N and M, such that N = 2 * M.

Constraints:

2 <= arr.length <= 500

-10^3 <= arr[i] <= 10^3