Bitcoin price on September 12, 2026: BTC closed at $77,263, up 0.07%, in a $445 range between a $77,495 high and a $77,050 low — the fourth-narrowest session of 2026 and, on volume of 1,669 BTC, barely a quarter of the twenty-day average, the quietest aftermath imaginable to Friday’s $3,822 inflation-day round trip, with the READ MORE
Author: NY Comdori
I am a professional software engineer with 8 years of experience.
I am mostly interested in C++, Python, Javascript, algorithm and data structure (coding interview questions) and some other technologies such as spark and kafka
Monotonic Stack Pattern in C++: 13 LeetCode Problems, One Rule for Popping
Thirteen LeetCode problems, three of them rated Hard, and a single sentence that decides all of them. This post works through Joseph Choi’s stack session deck in C++ and tries to answer the question the problem tags never answer: not which data structure, but when does an entry stop being useful? Every solution here was READ MORE
Bitcoin Daily Brief — September 10, 2026: The Squeeze Breaks Downward as a PPI Overshoot Takes BTC to $76,537
Bitcoin price on September 10, 2026: BTC closed at $76,537, down 2.23%, in a $2,114 range between a $78,554 high and a $76,440 low — the largest daily decline since August 28, a fourth consecutive lower close, and the session in which the eleven-day Bollinger squeeze this brief has tracked all week finally expanded, taking READ MORE
Bitcoin Daily Brief — September 9, 2026
Bitcoin price on September 9, 2026: BTC closed at $78,284, down 0.21%, in a $2,026 range between a $79,753 high and a $77,727 low — a session whose candle body measured just $165, and which ended a twenty-three-day run of closes above the 20-day average while Bollinger band width contracted for an eleventh straight day READ MORE
LeetCode Queue Design Patterns in C++: Put the Answer at an Edge
LeetCode Queue Design Patterns in C++: Put the Answer at an Edge LeetCode Queue Design Patterns in C++: Put the Answer at an Edge nycomdorics.com · preview of the WordPress post · source deck by Joseph Choi A binary heap will hand you its smallest element instantly and tell you nothing whatsoever about the second READ MORE
Bitcoin Daily Brief — September 8, 2026: The Golden Cross Prints at $78,447 as Band Width Falls a Tenth Day to 8.4%
Bitcoin price on September 8, 2026: BTC closed at $78,447, down 0.82%, in a $1,888 range between a $79,477 high and a $77,589 low — a session in which the 50-day moving average finally crossed above the 200-day, the first golden cross since May 2025, while price itself finished $18 from its own 20-day average READ MORE
LeetCode Linked List Patterns in C++: Recovering the Context a Node Doesn’t Have
A linked list node knows exactly one thing about the world: what comes after it. Not what came before, not how far it is from the end, not whether the walk you started will ever terminate. Every technique in this post exists to recover one of those facts. That is the whole pattern. Array problems READ MORE
Bitcoin Daily Brief — September 7, 2026: $79,092 Close as the Squeeze Tightens to 13%; 50-Day Now $124 From the 200-Day
Bitcoin price on September 7, 2026: BTC closed at $79,092, down 1.55%, in a $1,796 range between an $80,462 high and a $78,666 low — a Labor Day session in which $80,000 was given back, while underneath it the 50-day moving average finished $124 from the 200-day and Bollinger band width collapsed to 13.3%, a READ MORE
Decrease and Conquer in C++: Twelve LeetCode Problems That Throw the Search Space Away
Decrease and conquer on LeetCode is the habit of proving that a whole block of candidates cannot possibly hold the answer, and then deleting it without looking. Twelve problems here run on that one move: 167, 11, 42, 121, 53, 1014, 169, 240, 277, 280, plus two that are worth including precisely because one of READ MORE
Bitcoin Daily Brief — September 6, 2026: $80,339 Weekly Close Lands $4 Under the 50-Week Average; Golden Cross Due Tuesday
Bitcoin price on September 6, 2026: BTC closed at $80,339, up 0.64%, in a $1,314 range between an $80,564 high and a $79,250 low — and because Sunday’s daily candle is also the weekly candle, that close settled $4.25 below the 50-week moving average, the closest a weekly close has come to that line in READ MORE