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importjavax.swing.;importjava.awt.;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.util.ArrayList;importjava.util.List;importjava.util.Random;classArithmeticProblem{privateint[]operands;char[]operators;
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今天我写了一个生成随机四则运算题的程序。importjavax.swing.;importjava.awt.;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjava.util.ArrayList;importjava.util.Arrays;importjava.util.List;importjava.util.Random;class
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