LeetCode 1716: Calculate Money in Leetcode Bank Solution
Master LeetCode problem 1716 (Calculate Money in Leetcode Bank), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
1716. Calculate Money in Leetcode Bank
Problem Explanation
Explanation:
To solve this problem, we need to simulate Hercy's daily savings pattern based on the given rules. We can observe that each week follows an arithmetic progression, with the first day starting at 1 and increasing by 1 each day. The total savings after n days can be calculated by summing up the savings for each week and the remaining days.
- Calculate the total savings for complete weeks using the formula for the sum of an arithmetic progression.
- Calculate the savings for the remaining days after the last complete week.
- Add the savings from steps 1 and 2 to get the total amount of money Hercy will have at the end of the nth day.
:
Solution Code
class Solution {
public int totalMoney(int n) {
int weeks = n / 7; // Number of complete weeks
int total = 0;
// Calculate total savings for complete weeks
total += 28 * weeks + 7 * (weeks - 1) * weeks / 2;
// Calculate savings for remaining days
int remainingDays = n % 7;
total += (2 * weeks + remainingDays - 1) * remainingDays / 2;
return total;
}
}Try It Yourself
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