id/email
password
forgot password | create account
about | help | code help+videos | done | prefs
CodingBat code practice

 

frew@mclean.com > stackHead22b
prev  |  next  |  chance

Ensure the stack's head is 2, 2. The stack may be empty.


stackHead22b([2]) → [2, 2]
stackHead22b([3]) → [3, 2, 2]
stackHead22b([1, 4, 9]) → [1, 4, 9, 2, 2]

...Save, Compile, Run (ctrl-enter)

public ArrayList<Integer> stackHead22b(ArrayList<Integer> list) { }

Editor font size %:
Shorter output


Forget It! -- delete my code for this problem

Progress graphs:
 Your progress graph for this problem
 Random user progress graph for this problem
 Random Epic Progress Graph

Java Help

Misc Code Practice

Difficulty: 300

Copyright Nick Parlante 2017 - privacy