How should I practice File Download Coverage Percentage?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Persona online assessment problems in FastPrep.

Is File Download Coverage Percentage associated with Persona?

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File Download Coverage Percentage

Persona● MediumINTERNOA

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Problem statement

A file has chunks numbered 1..totalChunks. Each inclusive interval records one completed download of every chunk in that range.

If requireTwice is false, return the integer percentage of chunks downloaded at least once, rounded down. If it is true, return 100 only when every chunk was downloaded at least twice; otherwise return 0.

Function

downloadCoveragePercent(totalChunks: int, intervals: int[][], requireTwice: boolean) → int

Examples

Example 1

totalChunks = 5intervals = [[3,4]]requireTwice = falsereturn = 40

Two of five chunks were downloaded.

Example 2

totalChunks = 5intervals = [[1,5],[1,5]]requireTwice = truereturn = 100

Every chunk appears in both intervals.

Example 3

totalChunks = 5intervals = [[1,5],[2,5]]requireTwice = truereturn = 0

Chunk 1 was downloaded only once.

Constraints

1 <= totalChunks <= 100000.
0 <= intervals.length <= 100000.
1 <= start <= end <= totalChunks.