How to Solve Account Balance After Rounded Purchase Problem
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Account Balance After Rounded Purchase
Initially, you have a bank account balance of 100 dollars. You are given an integer purchaseAmount representing the amount you will spend on a purchase in dollars, in other words, its price. When maki...
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Understanding the Account Balance After Rounded Purchase Problem
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Problem Statement
Initially, you have a bank account balance of 100 dollars. You are given an integer purchaseAmount representing the amount you will spend on a purchase in dollars, in other words, its price. When making the purchase, first the purchaseAmount is rounded to the nearest multiple of 10. Let us call this value roundedAmount. Then, roundedAmount dollars are removed from your bank account. Return an integer denoting your final bank account balance after this purchase. Notes: 0 is considered to be a multiple of 10 in this problem. When rounding, 5 is rounded upward (5 is rounded to 10, 15 is rounded to 20, 25 to 30, and so on).
Account Balance After Rounded Purchase
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Examples
purchaseAmount = 990The nearest multiple of 10 to 9 is 10. So your account balance becomes 100 - 10 = 90.
purchaseAmount = 1580The nearest multiple of 10 to 15 is 20. So your account balance becomes 100 - 20 = 80.
purchaseAmount = 109010 is a multiple of 10 itself. So your account balance becomes 100 - 10 = 90.
Constraints
0 <= purchaseAmount <= 100How Interview Coder Helps with Leetcode Problems
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