Practice
Test 1
25 min · 12 questions
Gurujada
Beyond LeetCode · Lendi · Oct 2026
See the pattern behind a coding question, and know when an answer is wrong, even an AI's.
- Length 47 min of video
- Content 23 items in 4 Sections
- Practice 120 practice questions
- Schedule Cohort · 13 Oct 2026 – 22 Oct 2026
- For Lendi students preparing for placement tests. Loops and arrays in any language.
K
With Krishnamohan
Course content
Document
Who can see your work
1 min
Video
It passed the samples (cold open)
5 min
Video
Two fingers from both ends
4 min
Video
Counting pairs
5 min
Video
Three days, and cleaning in place
6 min
Practice
Exercises: two pointers
25 min · 25 questions
Practice
Homework 1: two pointers (LeetCode 167, 2563, 283)
3 min · 3 questions
How you'll learn here
- Wrong, and why Wrong options say what went wrong.
- Vidya asks back Stuck? It asks you questions, never gives the answer.
- A teacher sees it Your work reaches Krishnamohan.
About this Workbook
An AI can answer a coding question in seconds. In a placement test or an interview, the question is new and AI is not allowed. You have to see what the question is really asking and choose the right method yourself.
In three days we take one common family of questions, about a list of numbers, and go deep. You learn three methods: two pointers, sliding window and running totals. More importantly, you learn how to tell which one a question needs, and how to catch an answer that only looks right.
Each day: short videos, then exercises on your whiteboard, with help from Vidya and from your teacher when you are stuck. Whatever you don't finish in the session, finish at home. Day 1 starts with a 25-minute test and Day 3 ends with a similar one, so you can see how far you came.
Take both tests and complete the exercises, homework and checks to get a certificate anyone can verify online.
Your teacher
K
Krishnamohan
Also teaches How to Speak , Multiply near 100