Practice
Resources
Contests
Online IDE
New
Free Mock
Scaler
Practice
Improve your coding skills with our resources
Contests
Compete in popular contests with top coders
Scaler
Explore Offerings by SCALER

Begin your success journey!

Sign Up using
Full name *
Email *
Password *

By creating an account, I acknowledge that I have read and agree to InterviewBit’s Terms and Privacy Policy .

Welcome back!

Log In using
Email *
Password *

Perfect Peak of Array


Problem Description

Given an integer array A of size N.

You need to check that whether there exist a element which is strictly greater than all the elements on left of it and strictly smaller than all the elements on right of it.

If it exists return 1 else return 0.

NOTE:

  • Do not consider the corner elements i.e A[0] and A[N-1] as the answer.


  • Problem Constraints

    3 <= N <= 105

    1 <= A[i] <= 109



    Input Format

    First and only argument is an integer array A containing N integers.



    Output Format

    Return 1 if there exist a element that is strictly greater than all the elements on left of it and strictly smaller than all the elements on right of it else return 0.



    Example Input

    Input 1:

     A = [5, 1, 4, 3, 6, 8, 10, 7, 9]
    

    Input 2:

     A = [5, 1, 4, 4]
    



    Example Output

    Output 1:

     1
    

    Output 2:

     0
    



    Example Explanation

    Explanation 1:

     A[4] = 6 is the element we are looking for.
     All elements on left of A[4] are smaller than it and all elements on right are greater.
    

    Explanation 2:

     No such element exits.
    



    NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
    Start solving Perfect Peak of Array on Interview Code Editor
    Hints
    • Hint 1
    • Solution Approach
    • Complete Solution
    Asked In:

    Discussion


    Loading...
    Click here to start solving coding interview questions
    Free Mock Assessment
    Fill up the details for personalised experience.
    All fields are mandatory
    Current Employer *
    Enter company name *
    Graduation Year *
    Select an option *
    1992
    1993
    1994
    1995
    1996
    1997
    1998
    1999
    2000
    2001
    2002
    2003
    2004
    2005
    2006
    2007
    2008
    2009
    2010
    2011
    2012
    2013
    2014
    2015
    2016
    2017
    2018
    2019
    2020
    2021
    2022
    2023
    2024
    2025
    2026
    2027
    Phone Number *
    OTP will be sent to this number for verification
    +1 *
    +1
    Change Number
    Phone Number *
    OTP will be sent to this number for verification
    +1 *
    +1
    Change Number
    Graduation Year *
    Graduation Year *
    1992
    1993
    1994
    1995
    1996
    1997
    1998
    1999
    2000
    2001
    2002
    2003
    2004
    2005
    2006
    2007
    2008
    2009
    2010
    2011
    2012
    2013
    2014
    2015
    2016
    2017
    2018
    2019
    2020
    2021
    2022
    2023
    2024
    2025
    2026
    2027
    *Enter the expected year of graduation if you're student
    Current Employer *
    Company Name *
    Please verify your phone number
    Edit
    Resend OTP
    By clicking on Start Test, I agree to be contacted by Scaler in the future.
    Already have an account? Log in
    Free Mock Assessment
    Instructions from Interviewbit
    Start Test