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Files and I/O
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Files and I/O
Read and write files with confidence. 15 problems · Intermediate level.
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15 problems
Formats
✓
Sum a CSV Column
easy
✓
CSV Parser with Quoted Fields
hard
text processing
✓
Count Lines, Words and Characters
easy
parsing lines
✓
Log Level Counter
easy
✓
Parse a key=value Config
medium
text search
✓
Search Lines with Line Numbers (grep)
easy
line processing
✓
Count Consecutive Duplicate Lines
easy
✓
Number the Lines
easy
relative vs absolute paths
✓
Simplify a File Path
medium
streaming
✓
Print the Last N Lines (tail)
medium
text formatting
✓
Word Wrap to a Fixed Width
medium
✓
Column Aligned Table
medium
parsing
✓
Expression Tokenizer
medium
text formats
✓
Fixed-Width Record Parser
medium
serialization basics
✓
Length-Prefixed Encoding
hard