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Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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I need the answer as soon as possible
![Valid Mountain Array
Given an array of integers arr, return true if
and only if it is a valid mountain array.
Recall that arr is a mountain array if and only
if:
arr.length >= 3
There exists some i with 0 <i<arr.length - 1
such that:
arr[0] < arr[1] < ... < arr[i - 1] < arr[i]
arr[i] > arr[i + 1] > ... > arr[arr.length - 1]
Example 1:
Input: arr = [2,1]
Output: false
Example 2:
Input: arr = [3,5,5]
Output: false](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fefc514a5-5605-451f-82fa-a91972041def%2F42f16e81-f137-4062-a961-2e15e3a2e94b%2Fmkmcsoc_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Valid Mountain Array
Given an array of integers arr, return true if
and only if it is a valid mountain array.
Recall that arr is a mountain array if and only
if:
arr.length >= 3
There exists some i with 0 <i<arr.length - 1
such that:
arr[0] < arr[1] < ... < arr[i - 1] < arr[i]
arr[i] > arr[i + 1] > ... > arr[arr.length - 1]
Example 1:
Input: arr = [2,1]
Output: false
Example 2:
Input: arr = [3,5,5]
Output: false
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