Interval List Intersections

Try to solve the Interval List Intersections problem.

Statement

For two lists of closed intervals given as input, intervalLista and intervalListb, where each interval has its own start and end time, write a function that returns the intersection of the two interval lists.

For example, the intersection of [3,8][3, 8] and [5,10][5, 10] is [5,8][5, 8].

Constraints:

  • 0≤0 \leq intervalLista.length, intervalListb.length ≤1000\leq 1000

  • 0≤0 \leq start[i] << end[i] ≤109\leq 10^9, where ii is used to indicate intervalLista

  • end[i] << start[i + 1]

  • 0≤0 \leq start[j] << end[j] ≤109\leq 10^9, where jj is used to indicate intervalListb

  • end[j] << start[j + 1]

Examples

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