Function are_intervals_contiguous 

pub fn are_intervals_contiguous(intervals: &[(u64, u64)]) -> bool

Checks if intervals are contiguous (adjacent with no gaps).

Intervals are contiguous if, when sorted by start time, each interval’s start timestamp is exactly one more than the previous interval’s end timestamp. This ensures complete coverage of a time range with no gaps.

Parameters

• intervals: A slice of timestamp intervals as (start, end) tuples.

Returns

Returns true if all intervals are contiguous, false if any gaps are found. Returns true for empty lists or lists with a single interval.

Examples

// Contiguous intervals
assert!(are_intervals_contiguous(&[(1, 5), (6, 10), (11, 15)]));

// Non-contiguous intervals (gap between 5 and 8)
assert!(!are_intervals_contiguous(&[(1, 5), (8, 10)]));