YoungForest's blog

A multi-stage Ant Financial backend internship interview covering data structures, algorithms, written tests, project deep dives, and behavioral questions.

A weekly review of odd-count construction, continuous bulb prefixes, organisation-tree relay time and a frog's exact-time position.

A biweekly review of increasing-decreasing strings, vowel parity states, binary-tree zigzags and maximum-sum BST subtrees.

A DingTalk backend internship interview spanning linked lists, two-sum, C++, compilers, operating systems, networking, and career plans.

A backend internship interview review and an edit-distance search optimized by reusing dynamic-programming work across shared Trie prefixes.

A weekly review of date differences, valid binary trees, closest divisor pairs and the largest multiple of three, focused on fast, bug-free work.

A biweekly review of bit-count sorting, periodic discounts, three-character sliding windows and recursive valid pickup-delivery orders.

A review of coding practice, internships, research, and communication challenges, followed by graduation, career, and health goals for 2020.

A weekly review of sorted-matrix counting, rolling products, greedy event scheduling and reverse construction under last-minute pressure.

A biweekly review of reduction to zero, sliding windows, clock angles and same-value jump paths, plus competing from home while rusty.