PySpark Arrays

5 interview problems on split, explode and work with array columns, from easy to hard.

• Word Count · Medium · Arrays
• Item Positions in a Basket (POSEXPLODE) · Medium · Arrays
• Keep Users with No Interests (EXPLODE_OUTER) · Medium · Arrays
• Sorted Distinct Purchase List · Medium · Arrays
• Fill Missing Dates (Calendar Spine) · Hard · Joins

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Topics: Window Functions · Joins · Aggregations · Pivot, Unpivot & Rollup · Arrays · Null Handling · Conditional Logic · Dates · Filtering & Selection · Strings

Difficulty: Easy · Medium · Hard · PySpark interview roadmap · All problems