Leetcode Problem 1854. Maximum Population Year

1854. Maximum Population Year

Leetcode Solutions

Prefix Sum and Line Sweep

  1. Initialize an array pop of size 101 (since the years range from 1950 to 2050) to store the net population changes.
  2. Iterate over each log in logs and for each log: a. Increment pop[birth year - 1950] by 1. b. Decrement pop[death year - 1950] by 1.
  3. Initialize variables max_population to 0 and max_year to 1950.
  4. Iterate from index 1 to 100 in the pop array and for each index: a. Update pop[i] with pop[i] + pop[i - 1] to get the current population. b. If pop[i] is greater than max_population, update max_population and set max_year to i + 1950.
  5. Return max_year as the earliest year with the maximum population.
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Sorting and Counting Overlapping Intervals

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