leetcode：5259. Calculate the total tax payable [simple simulation + see which range]

analysis

See where your front falls , Then add up all the previous intervals
The last interval can be added to the current extra part

ac code

class Solution:
    def calculateTax(self, brackets: List[List[int]], income: int) -> float:
        ans = 0
        n = len(brackets)
        
        if income <= brackets[0][0]:
            return income * brackets[0][1] / 100
        else:
            for i in range(n):
                if i == 0:
                    ans += brackets[0][0] * brackets[0][1] / 100
                else:
                    if income >= brackets[i - 1][0] and income <= brackets[i][0]:
                        ans += (income - brackets[i - 1][0]) * brackets[i][1] / 100
                        break
                    else:
                        ans += (brackets[i][0] - brackets[i - 1][0]) * brackets[i][1] / 100
        
        return ans
                    
                
            

summary

Simple simulation But what if the last part of the whole range is exceeded ？
The topic should be made clear