Question	Type	Level	Solve
Write a function that checks whether the given binary tree is a binary search tree?	Data Structures	Hard	Solve
Write a function to check whether the given binary tree has the given value node?	Data Structures	Medium	Solve
Write a function that checks whether the given binary tree is a max heap?	Data Structures	Hard	Solve
Write a function to check whether the given binary tree is a min heap?	Data Structures	Hard	Solve
Write a function that finds the missing number in a list of consecutive numbers that was shuffled?	Array	Medium	Solve
Write a function that sorts list of strings according to string length and then lexicographically?	Array	Hard	Solve
Write a function to add two single digit numbers without using any operators?	Challenge	Hard	Solve

Question

Type

Level

Solve

Write a function that checks whether the given binary tree is a binary search tree?

Data Structures

Hard

Solve

Write a function to check whether the given binary tree has the given value node?

Data Structures

Medium

Solve

Write a function that checks whether the given binary tree is a max heap?

Data Structures

Hard

Solve

Write a function to check whether the given binary tree is a min heap?

Data Structures

Hard

Solve

Write a function that finds the missing number in a list of consecutive numbers that was shuffled?

Array

Medium

Solve

Write a function that sorts list of strings according to string length and then lexicographically?

Array

Hard

Solve

Write a function to add two single digit numbers without using any operators?

Challenge

Hard

Solve

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