PySpark Strings

2 interview problems on clean and transform text columns, from easy to hard.

• Word Count · Medium · Arrays
• Parse Application Log Lines · Medium · Strings

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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