Julia's coding blog - Practice makes perfect
From January 2015, she started to practice leetcode questions; she trains herself to stay focus, develops "muscle" memory when she practices those questions one by one. 2015年初, Julia开始参与做Leetcode, 开通自己第一个博客. 刷Leet code的题目, 她看了很多的代码, 每个人那学一点, 也开通Github, 发表自己的代码, 尝试写自己的一些体会. She learns from her favorite sports – tennis, 10,000 serves practice builds up good memory for a great serve. Just keep going. Hard work beats talent when talent fails to work hard.
Thursday, April 23, 2026
Chandelier Exit
Chandelier Exit
An indicator that can be used to set trailing stop-losses for both long and short positions.
What Is the Chandelier Exit?
Developed by Charles Le Beau and featured in Alexander Elder's books, the Chandelier Exit sets a trailing stop-loss based on the Average True Range (ATR). The indicator is designed to keep traders in a trend and prevent an early exit as long as the trend extends. Typically, the Chandelier Exit will be above prices during a downtrend and below prices during an uptrend.
Here is the article.
AI烧钱太猛!Meta裁8000人 微软推“买断”方案
周四,Meta与微软相继宣布了缩减人员成本的措施。Meta计划裁员10%,涉及约8000名员工;微软则向数千名符合条件的美国员工提供了自愿离职方案。此举正值科技巨头纷纷加大对人工智能领域的投资。
Meta在周四发给员工的备忘录中表示,裁员将于5月20日正式执行,且公司将不再招聘此前计划填补的6000个空缺职位。
裁员的同时,Meta首席执行官扎克伯格(Mark Zuckerberg)正在大举投入资金,用于招募顶尖人才及建设基础设施,以开发包括大型语言模型和聊天机器人等在内的尖端人工智能产品。Meta此前已预计今年的资本支出将创下历史新高,并已与相关合作伙伴达成了多项价值数十亿美元的协议。
据彭博社报道,Meta首席人事官盖尔(Janelle Gale)在备忘录中提到了人工智能领域的支出情况。她指出:“此举是我们持续努力提升公司运营效率、并以此抵消我们在其他领域所作投资成本的一部分。”
由于路透社在本月初已率先报道了相关裁员意向,盖尔表示公司决定提前确认这一消息。她在备忘录中写道:“我知道这对大家来说是个令人不快的消息,确认这一消息会让所有人都感到不安;但在当前形势下,我们认为这是公司向前发展的最佳途径。”
截至今年年初,Meta在全球拥有近7.9万名员工。该公司定于下周发布第一季度财报。
与此同时,面对人工智能领域支出激增带来的压力,微软也推出了其成立51年来的首个自愿退休方案。据知情人士透露,这项一次性计划面向在美任职、职级在高级总监及以下的员工。申请条件要求员工的工龄与年龄之和达到或超过70,预计约有7%的美国本土员工符合资格。
微软近期正在大幅增加在数据中心方面的资本支出,旨在为云服务客户提供支持生成式人工智能模型运行的算力。去年,该公司已通过多轮裁员削减了运营成本。截至2025年6月,微软全球员工总数约为22.8万人,其中美国本土员工约12.5万人。
微软执行副总裁兼首席人事官科尔曼(Amy Coleman)在内部备忘录中表示:“我们希望通过这项计划,让符合条件的员工能够自主选择人生的下一个阶段,并获得公司提供的丰厚支持。”
据报道,符合条件的员工及其直属经理将于5月7日收到方案的详细说明。
April 23 2026 | IBM, NOW stock update
Oil Rises on Escalation Fears; Software Stocks Retreat — WSJ
By Hannah Erin Lang and Caitlin McCabe
Stocks closed lower Thursday, with oil rising amid signs of potentially escalating hostilities in the Middle East.
The Nasdaq composite led indexes lower, falling 0.9%. The Dow industrials dropped 0.4%, or 181 points. The S&P 500 retreated 0.4%.
Oil prices rose for a fourth straight session, with the front-month Brent crude contract rising 3.1% to $105.07 a barrel as traders grow increasingly uneasy over the lack of progress on U.S.-Iran diplomacy and tensions in the Strait of Hormuz.
Israel is prepared to escalate military operations against Iran, the country's defense minister, Israel Katz, said in a recorded statement on Thursday. President Trump also said he has ordered the Navy to "shoot and kill any boat" laying mines in the strait, as the U.S. and Iran jostle for control of the vital waterway.
Meanwhile, first-quarter earnings are back in focus.
The software-as-a-service, or SaaS, sector is in the hot seat and dragging on major U.S. indexes. Shares of cloud-based software company ServiceNow plunged 18% - the company's quarterly earnings update on Wednesday showed rising revenue, but traders are fixating on a cut to its projected operating margin.
IBM stock slumped 8.3% after the company disappointed investors by keeping its revenue guidance the same. Among "Magnificent Seven" tech stocks, Microsoft was also hit with the software selloff, losing 4%. Tesla shares were down 3.6% after it outlined plans to plow $25 billion into capital expenditures this year as it pursues its AI and robotics ambitions.
This item is part of a Wall Street Journal live coverage event. The full stream can be found by searching P/WSJL (WSJ Live Coverage).
now stock earnings how bad it is | April 23 2026
ServiceNow (NOW) stock has plummeted severely, dropping over 15%—and up to 18% in some reports—immediately following its Q1 2026 earnings report despite exceeding analyst expectations on revenue and earnings per share. The stock is down over 40% year-to-date, with the market punishing the high-growth company due to concerns over artificial intelligence (AI) disruption, decreasing operating margins, and geopolitical impacts on deals.
- The "Beat-and-Punish" Trend: Despite beating revenue estimates ($3.77 billion vs. $3.75 billion expected) and hitting EPS targets (97 cents), the market is demanding massive growth, not just "good" growth, for already high-priced software stocks.
- AI Fears and Valuation: Investors are worried that AI-native startups could disrupt established enterprise software providers. This has resulted in widespread selloffs for companies like Salesforce, Adobe, and ServiceNow.
- Marginal Decline: Concerns about decreasing non-GAAP operating margins and potential dilution from acquisitions (such as the proposed $7.75 billion purchase of Armis) have spooked investors.
- Geopolitical Impact: The company cited that conflicts in the Middle East caused delays in some large, on-premise, enterprise deals.
- Revenue: Grew 22.1% year-over-year, beating estimates.
- Earnings: 97 cents per share, surpassing Zacks Consensus Estimate.
- Management Outlook: CEO Bill McDermott maintained a positive outlook, citing strong AI product sales, which are expected to reach nearly $1.5 billion in 2026.
- Share Repurchases: Management indicated they believe the stock is undervalued, having bought back significant shares.
最佳剥头皮指标—1分钟到日内交易 —准确度超80%的轻松买卖策略测试(Chandelier Exit+ZLSMA)
Here is the link.
最佳剥头皮指标—1分钟到日内交易
—准确度超80%的轻松买卖策略测试(Chandelier Exit+ZLSMA)
#剥头皮#tradingview#剥头皮交易策略#交易系统#交易策略
#剥头皮#tradingview#剥头皮交易策略#交易系统#交易策略
158,045 views Nov 25, 2022
98%胜率,100%盈利,最准确的买卖信号指标 —超级趋势过滤器交易系统
98%胜率,100%盈利,最准确的买卖信号指标
—超级趋势过滤器交易系统(SuperTrend+QQE MOD+A-V2)
#supertrend#tradingview#超级趋势指标#交易系统#交易策略
271,280 views Sep 17, 2022
98%胜率,100%盈利,最准确的买卖信号指标—超级趋势过滤器交易系统(SuperTrend+QQE MOD+A-V2)
Here is the link.
98%胜率,100%盈利,最准确的买卖信号指标—超级趋势过滤器交易系统(SuperTrend+QQE MOD+A-V2)#supertrend#tradingview#超级趋势指标#交易系统#交易策略
Wednesday, April 22, 2026
Key facts: ServiceNow Now Assist ARR Doubled; JPMorgan Advises Hedge
Key facts: ServiceNow Now Assist ARR Doubled; JPMorgan Advises Hedge
- ServiceNow said Now Assist GenAI Q4 annual contract value more than doubled year‑over‑year; investors watch how the company will monetize its AI offerings, including Now Assist.1
- J.P. Morgan advised hedging ServiceNow (NOW) before earnings by buying short-dated call spreads and financing with OTM put sales, citing weak software sentiment and limited impact from one report.
Tuesday, April 21, 2026
Aptiv PLC is an American[3][4] automotive technology supplier
Aptiv PLC is an American[3][4] automotive technology supplier with headquarters in Schaffhausen, Switzerland.[1] Aptiv grew out of the now-defunct American company, Delphi Automotive Systems, which itself was formerly a component of General Motors.[5]
History
The company was established as General Motors' Automotive Components Group in 1994, which changed its name to Delphi Automotive Systems in 1995.[6] G.M. also renamed the various divisions within the newly created Delphi unit. Packard Electric became Delphi Packard Electric Systems; Delco Chassis became Delphi Chassis Systems; Inland Fisher-Guide became Delphi Interior and Lighting Systems; Saginaw became Delphi Saginaw Steering Systems; Harrison Radiator became Delphi Harrison Thermal Systems, and AC Delco became Delphi Energy and Engine Management Systems.[6]
Why ServiceNow Stock Topped the Market Today
Why ServiceNow Stock Topped the Market Today
Not for the first time in recent weeks, the company has taken ownership of a cybersecurity specialist.
By Eric Volkman – Apr 21, 2026 at 6:07PM EST
Key Points
- These buys will enhance its native platform.
- Cybersecurity solutions are justifiably popular in a world loaded with hacking threats.
Enterprise software developer ServiceNow (NOW+0.42%) enjoyed a modest rally on the stock exchange Tuesday, with its shares gaining 0.4% on a day when the benchmark S&P 500 index landed in negative territory. Investors were cheered by the company's closing of its latest asset buy.
New month, new acquisition
Just after market close on Monday, ServiceNow divulged that it had completed its acquisition of cybersecurity company Armis. The deal was originally announced last December, with the two companies agreeing that ServiceNow would be Armis' new owner for roughly $7.75 billion in cash.
In its press release trumpeting the acquisition's close, ServiceNow said that owning Armis "extends ServiceNow's security platform into the physical and operational layers of the enterprise, adding the cyber asset intelligence foundation and business context that enterprises need to deploy agentic artificial intelligence (AI) with trust and control at scale."
ServiceNow has been on something of a cybersecurity shopping spree lately. Early last month it finalized the acquisition of identity security company Veza. In contrast to the Armis deal it did not disclose the price it paid, although reports from several media outlets put the cost at over $1 billion.
Spending while flush
ServiceNow wrote that it is funding the Armis deal with a combination of cash on hand and debt. It didn't provide more details. As of the end of 2025, it had a fairly solid position in cash and short-term investments of nearly $6.3 billion. Its long-term debt at that point stood at under $2.3 billion.
So while neither of these recent acquisitions is coming cheap, they're within ServiceNow's means to pay for them. And cybersecurity, in many forms, will always be mission-critical and important to a wide range of businesses worldwide. Both purchases look like clever, forward-thinking moves to me.



