Class Solution

  • All Implemented Interfaces:

    
    public final class Solution
    
                        

    1716 - Calculate Money in Leetcode Bank.

    Easy

    Hercy wants to save money for his first car. He puts money in the Leetcode bank every day.

    He starts by putting in $1 on Monday, the first day. Every day from Tuesday to Sunday, he will put in $1 more than the day before. On every subsequent Monday, he will put in $1 more than the previous Monday.

    Given n, return the total amount of money he will have in the Leetcode bank at the end of the <code>n<sup>th</sup></code> day.

    Example 1:

    Input: n = 4

    Output: 10

    Explanation: After the 4<sup>th</sup> day, the total is 1 + 2 + 3 + 4 = 10.

    Example 2:

    Input: n = 10

    Output: 37

    Explanation: After the 10<sup>th</sup> day, the total is (1 + 2 + 3 + 4 + 5 + 6 + 7) + (2 + 3 + 4) = 37. Notice that on the 2<sup>nd</sup> Monday, Hercy only puts in $2.

    Example 3:

    Input: n = 20

    Output: 96

    Explanation: After the 20<sup>th</sup> day, the total is (1 + 2 + 3 + 4 + 5 + 6 + 7) + (2 + 3 + 4 + 5 + 6 + 7 + 8) + (3 + 4 + 5 + 6 + 7 + 8) = 96.

    Constraints:

    • 1 &lt;= n &lt;= 1000

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
    • Field Summary

      Fields 
      Modifier and Type Field Description
    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()
    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
    • Method Summary

      Modifier and Type Method Description
      final Integer totalMoney(Integer n)
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait