2726. Calculator with Method Chaining
Description
Design a Calculator
class. The class should provide the mathematical operations of addition, subtraction, multiplication, division, and exponentiation. It should also allow consecutive operations to be performed using method chaining. The Calculator
class constructor should accept a number which serves as the initial value of result
.
Your Calculator
class should have the following methods:
add
- This method adds the given numbervalue
to theresult
and returns the updatedCalculator
.subtract
- This method subtracts the given numbervalue
from theresult
and returns the updatedCalculator
.multiply
- This method multiplies theresult
by the given numbervalue
and returns the updatedCalculator
.divide
- This method divides theresult
by the given numbervalue
and returns the updatedCalculator
. If the passed value is0
, an error"Division by zero is not allowed"
should be thrown.power
- This method raises theresult
to the power of the given numbervalue
and returns the updatedCalculator
.getResult
- This method returns theresult
.
Solutions within 10-5
of the actual result are considered correct.
Example 1:
Input: actions = ["Calculator", "add", "subtract", "getResult"], values = [10, 5, 7] Output: 8 Explanation: new Calculator(10).add(5).subtract(7).getResult() // 10 + 5 - 7 = 8
Example 2:
Input: actions = ["Calculator", "multiply", "power", "getResult"], values = [2, 5, 2] Output: 100 Explanation: new Calculator(2).multiply(5).power(2).getResult() // (2 * 5) ^ 2 = 100
Example 3:
Input: actions = ["Calculator", "divide", "getResult"], values = [20, 0] Output: "Division by zero is not allowed" Explanation: new Calculator(20).divide(0).getResult() // 20 / 0 The error should be thrown because we cannot divide by zero.
Constraints:
actions
is a valid JSON array of stringsvalues
is a valid JSON array of numbers2 <= actions.length <= 2 * 104
1 <= values.length <= 2 * 104 - 1
actions[i]
is one of "Calculator", "add", "subtract", "multiply", "divide", "power", and "getResult"- First action is always "Calculator"
- Last action is always "getResult"
Solutions
Solution 1
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