Jun 13
A: '0'<=c&&c<='9'
B: ArrayList<ArrayList<Integer>>で構築して出力
C: Xでソートして、これまでで一番小さいYだけ持っておいて、今見ている点のYがそれより小さければカウント
D: xを全探索する方針で、犯人の候補をPriorityQueueで管理して数え上げ
1
7
291
Jun 13
3 3Sum : Similar to 2 sum , 4sum approach, take a hashmap and insert the difference , if found then add in arraylist
#SDESheetChallenge @striver_79 @takeUforward_
1
29
Jun 12
Day 12/45 #SDESheetChallenge 🚀
✅ Linked List Palindrome
✅ Starting Point of Loop in LL
✅ Flattening of Linked List
Used ArrayList and HashSet based approaches to solve today's Linked List problems.
#DSA #LeetCode #LinkedList
@striver_79 @takeUforward_
1
7
Jun 12
🚀 Day 31/75 — #75DaysOfCode #DSA
✅ Stack using ArrayList
✅ Stack using LinkedList
✅ Push, Pop & Peek operations
✅ LIFO concept
9
Jun 12
Wells Fargo SDE-1 interview experience
Interview Process (3 Rounds)
📌 Round 1: Recruiter Screening
• Current role & responsibilities
• Tech stack discussion
• Why switch?
• Notice period & availability
Focus: Communication, confidence, and how clearly you explain your work.
📌 Round 2: Java Resume Deep Dive
Questions asked:
• Explain OOP concepts with real-world examples
• Polymorphism vs Inheritance
• Encapsulation use cases
• Checked vs Unchecked Exceptions
• List vs Set vs Map
• ArrayList vs LinkedList
• How does HashMap work?
• Projects mentioned in resume
Focus: Fundamentals practical understanding, not textbook definitions.
📌 Round 3: Advanced Java DSA SQL
Java:
• Multithreading concepts
• Exception handling in production systems
• Collections internals
• HashMap collision handling
DSA:
Maximum Subarray Sum
→ Expected: Kadane's Algorithm
SEND MORE = MONEY
→ Backtracking approach
→ Constraint handling & logical reasoning
SQL:
Find employees having the minimum salary in each department.
Example:
SELECT department_id, employee_id, salary
FROM Employees e
WHERE salary = (
SELECT MIN(salary)
FROM Employees
WHERE department_id = e.department_id
);
Key takeaway:
Wells Fargo seems to focus heavily on:
✓ Java fundamentals
✓ DSA patterns
✓ SQL basics
✓ Resume projects
✓ Communication & problem explanation
Many candidates spend months grinding hard LeetCode problems, but interviews like this show that strong fundamentals and clear thinking often matter more.
(Source: LeetCode Discuss)
31
5
72
2,595
lateinit var ian retweeted
Jun 11
JFE ArrayList Session source code
@kenyanJug
github.com/samuelowino/kjug-…
2
6
151
Jun 12
Day 105 🚀
📌 JavaScript:
Callback Hell
Promises
.then()
.catch()
📌 DSA:
ArrayList & in-built functions
Container With Most Water (Brute Force)
Learned how Promises make async code cleaner and easier to manage.
Small progress every day = Big growth over time 🌱
#100Daysofcode
3
57
Jun 11
Day 6 of #BuildUntilHired
Today I learned the Java Collection Framework and explored:
✅ ArrayList
✅ LinkedList
✅ Stack
✅ Vector
✅ Queue Interface (Basics)
✅ Set Interface (Basics)
#BuildUntilHired #Java #SpringBoot #DSA #CodingJourney #SoftwareEngineer #BackendDevelop
1
23
Jun 11
Day 23 of Java DSA Journey with @lovebabbar3 @CodeHelp4U
Java Collections Framework (Part 1)
Explored ArrayList, LinkedList, Stack, & Vector. Learned their key operations and use cases.
#Java #CollectionsFramework #DSA #100DaysOfCode
2
17
Jun 11
ArrayList<type> name = new ArrayList<>();
Type [] name = new type [how many objects ];
49
