代码题库

Array Product Except Self

Best Single Trade in a Day

Count K-Tick Windows With Every Quote Inside the Tolerance Band

Count of Strictly-Positive Net-Inflow K-Period Windows

Cumulative Volume Snapshot

Days Until a Better PnL

EWMA Volatility Update

Find the Pivot Index of a P&L Stream

First Day Cumulative PnL Crosses Threshold

K-Day Rolling Mean Filter

Match Bid and Ask Snapshots

Max Sum of Fixed-Size Window

Min-Stack with O(1) get_min

Next Greater Quote Timestamp

Next Smaller Element Index

Lag-1 Sample Autocorrelation of a Time Series

Running Mean and Mean Absolute Deviation

Peak Inventory Day After Batched Range-Update Trades

2D Range Sum via Prefix Table

Running Min and Max of a Stream

Top K Liquid Tickers

Unique Tickers In Session

Welford's Online Variance