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Shivam Shrivastava’s post provides a consolidated list of resources for Google interview preparation, covering topics like Bit Manipulation, Trees, Graphs, Dynamic Programming, and more. Below are the key URLs shared:
- Interview Experience: https://lnkd.in/g9wSaUUT
- Resources: https://lnkd.in/g-jDdkBx
- Linked List: https://lnkd.in/g_KKrUru
- Bit Manipulation: https://lnkd.in/gTjTPaRD
- Maths: https://lnkd.in/ggHZDJs9
- Heaps: https://lnkd.in/g_xMQXfK
- Trees: https://lnkd.in/gnenrKNR
- Graphs: https://lnkd.in/gamHUjrU
- Dynamic Programming: https://lnkd.in/g3uzYEvw
- Strings: https://lnkd.in/g99u8azT
You Should Know:
1. Bit Manipulation Cheat Sheet (Linux/Windows)
Check if a number is even or odd if (( $num & 1 )); then echo "Odd"; else echo "Even"; fi Swap two numbers without temp variable a=$((a ^ b)) b=$((a ^ b)) a=$((a ^ b)) Set a bit num=$((num | (1 << pos))) Clear a bit num=$((num & ~(1 << pos)))
2. Graph Traversal (BFS/DFS) in Python
from collections import deque def bfs(graph, start): visited = set() queue = deque([bash]) while queue: node = queue.popleft() if node not in visited: print(node) visited.add(node) queue.extend(graph[bash])
3. Dynamic Programming (Fibonacci in Bash)
fib() {
if [ $1 -le 1 ]; then
echo $1
else
echo $(( $(fib $(( $1 - 1 )) ) + $(fib $(( $1 - 2 )) ) ))
fi
}
4. String Manipulation (Linux Commands)
Reverse a string
echo "hello" | rev
Count occurrences of a substring
grep -o "substring" file.txt | wc -l
Extract domain from URL
url="https://google.com"
domain=$(echo $url | awk -F/ '{print $3}')
What Undercode Say:
Mastering these concepts requires hands-on practice. Use Linux commands (awk, grep, sed) for string/text manipulation. For graph problems, automate testing with Python scripts. Bit hacks are crucial for low-level optimizations—experiment with bitwise operations in C or Bash.
Prediction:
Google’s 2025 interviews will likely emphasize AI-augmented coding assessments, requiring candidates to integrate ML models with algorithmic problem-solving.
Expected Output:
Even Swapped: a=5, b=3 Graph Traversal: A B C D Fibonacci(5): 5 Reversed String: olleh Domain: google.com
References:
Reported By: Shivam Shrivastava – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
