Leetcode Problem 1716. Calculate Money in Leetcode Bank

1716. Calculate Money in Leetcode Bank

Leetcode Solutions

Mathematical Approach to Calculate Total Savings

  1. Calculate the number of full weeks k as n / 7 using integer division.
  2. Set the first term F of the arithmetic sequence to 28 (sum of savings for the first week).
  3. Calculate the last term L of the sequence as 28 + (k - 1) * 7.
  4. Calculate the sum of the arithmetic sequence arithmeticSum as k * (F + L) / 2.
  5. Calculate the savings for the final partial week, if any, by iterating from 0 to n % 7 and adding 1 + k + day for each day.
  6. Add the sum of the arithmetic sequence arithmeticSum and the sum for the final week finalWeek to get the total savings total.
  7. Return total.
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Simulation Approach to Calculate Total Savings

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