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public class Calculator {
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public static void main(String[] args) {
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String expr = "(84 / 4 * 3 - 9) * 2 + 1 / 5"; // 108.2
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Parser p = new Parser(expr);
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String postfix = p.toPostFix();
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System.out.println(p.evalExpr(postfix));
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}
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}
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