The Character Map

A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

easy

Seniority

L6

Problem

Each record in `records` is a parsed log line: a single-character channel tag paired with the number of bytes that line carried. Return a dict mapping each channel tag to the total bytes across all lines that carried it.

Summary

Every character leaves a trace. Add them up.

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