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状态题目难度权限语言
未尝试中等免费版Python / C++ / Rust
coding-cumret-drawdown-flagged-indices可练习
累计 PnL 回撤告警：超过阈值的水下时刻下标Cumulative PnL Drawdown Alert: Sorted Indices Underwater Beyond Threshold
未尝试中等免费版Python / C++ / Rust
coding-cumret-zero-crossings可练习
累计 PnL 零交叉次数：回测净值曲线的符号翻转计数Cumulative PnL Zero-Crossings: Count Sign Flips of the Backtest Equity Curve
未尝试中等免费版Python / C++ / Rust
coding-earliest-cumvol-target-from-each-day可练习
从每个起始日起累计库存达到目标量的最早结束日数Earliest End-Day Reaching A Cumulative Inventory Target From Each Starting Day
未尝试简单免费版Python / C++ / Rust
未尝试中等免费版Python / C++ / Rust
coding-historical-es-multi-alpha可练习
多置信度历史 ES 一次性计算Historical Expected Shortfall at Multiple Confidence Levels
未尝试中等免费版Python / C++ / Rust
coding-longest-streak可练习
击穿盈利目标的最长子窗口：单调栈解前缀和长度优化Longest Sub-Window Beating a PnL Target via Monotonic-Stack on Prefix Sums
未尝试简单免费版Python / C++ / Rust
coding-peak-inventory-day-after-batch-trades可练习
批量区间增量交易后的峰值库存日Peak Inventory Day After Batched Range-Update Trades
未尝试中等免费版Python / C++ / Rust
coding-recovery-distance-after-each-day可练习
前向恢复距离：累计增益重新越过阈值所需天数Forward Recovery Distance: Days Until Cumulative Gain Clears Delta
未尝试中等免费版Python / C++ / Rust
coding-sector-day-return-rect-queries可练习
行业-交易日 收益方块：矩形区间求和的批量查询Sector-Day Return Cube: Batched Rectangular Range Sums