Count pairs from two BSTs whose sum is equal to given value x — DSA Technical Interview Questions & Answers

Count pairs from two BSTs whose sum is equal to given value x

Count pairs from two BSTs whose sum is equal to given value x

  • Count pairs from two BSTs whose sum is equal to given value x is a DSA topic. In plain words you use it for folder on disk in a file explorer. Don’t start with a slogan — start with that picture.
  • Smallest example: left < root < right. Type it, run it, and say what you see. If you can do that from memory, you know Count pairs from two BSTs whose sum is equal to given value x.
  • From the example next to this theory: Count pairs from two BSTs whose sum is equal to given value x: dry-run [4, 1, 3].
  • Trap: unbalanced BST becoming a list. Fix that before you talk about advanced DSA.
  • Viva: what is Count pairs from two BSTs whose sum is equal to given value x? Then show left < root < right. Then name the trap.

Technical Interview Tip: What is Count pairs from two BSTs whose sum is equal to given value x? Show this: left < root < right. Trap: unbalanced BST becoming a list.

Code Examples for Count pairs from two BSTs whose sum is equal to given value x

Count pairs from two BSTs whose sum is equal to given value x — working example

# Count pairs from two BSTs whose sum is equal to given value x
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

Count pairs from two BSTs whose sum is equal to given value x: dry-run [4, 1, 3]. Say the list after one step.

How to Explain Count pairs from two BSTs whose sum is equal to given value x to an Interviewer

What is Count pairs from two BSTs whose sum is equal to given value x?

Used for folder on disk a file explorer Not just the heading

Give one small example of Count pairs from two BSTs whose sum is equal to given value x.

left < root < right Count pairs from two BSTs whose sum is equal to given value x: dry-run [4, 1, 3]

What mistake do beginners make with Count pairs from two BSTs whose sum is equal to given value x?

unbalanced BST becoming a list Show the fix

Where do you use Count pairs from two BSTs whose sum is equal to given value x?

a file explorer folder on disk