Algorithm · Weride · Medium
Implement a basic calculator that handles the four arithmetic operations (+, -, *, /), parentheses, and the distributive law. Features Required The input is a string composed of positive integers, the operators +, -, *, /, and brackets ( and ). Evaluate the expression and return its result. You may assume the input string is always valid. Input and Output Examples Example 1 Explanation: 2 * 2 equals 4, and 3 + 4 gives 7. Example 2 Explanation: 4 + 5 + 2 is 11, so the first…
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