Practice Find Consecutive Integers from a Data Stream
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Find Consecutive Integers from a Data Stream
DataStream(value,k) starts empty. consec(num) appends num and reports whether the last k entries all equal value. Return false until at least k entries have arrived. Practice approach: Maintain only the current consecutive run of value: increment for a match and reset on any mismatch. Return whether that run reaches k. This uses O(1) time per call and O(1) space, without storing the entire stream. Test a run longer than k and a mismatch immediately after a qualifying run.
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Understanding the Find Consecutive Integers from a Data Stream Problem
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Problem Statement
DataStream(value,k) starts empty. consec(num) appends num and reports whether the last k entries all equal value. Return false until at least k entries have arrived. Practice approach: Maintain only the current consecutive run of value: increment for a match and reset on any mismatch. Return whether that run reaches k. This uses O(1) time per call and O(1) space, without storing the entire stream. Test a run longer than k and a mismatch immediately after a qualifying run.
Source: Find Consecutive Integers from a Data Stream on LeetCode. Use the original task for its coding environment and submissions.
Find Consecutive Integers from a Data Stream
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Examples
# Example 1
["DataStream","consec","consec","consec","consec","consec"] [[7,2],[7],[7],[7],[4],[7]]
[null,false,true,true,false,false]
A mismatch resets the run even after several qualifying calls.
Constraints
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