java 实现计算器 可以实现自动生成指定的4则运行题目 以及题目数量 生成的题目还可以导入到 excel中本地保存

[{"title":"（ 20 个子文件 4.57MB ） java 实现计算器 可以实现自动生成指定的4则运行题目 以及题目数量\n生成的题目还可以导入到 excel中本地保存 ","children":[{"title":"java实现计算器","children":[{"title":"demo3.iml <span style='color:#111;'> 1008B </span>","children":null,"spread":false},{"title":"src","children":[{"title":"Main.java <span style='color:#111;'> 779B </span>","children":null,"spread":false},{"title":"org","children":[{"title":"example","children":[{"title":"ArithmeticGenerator.java <span style='color:#111;'> 16.74KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true},{"title":"out","children":[{"title":"production","children":[{"title":"demo3","children":[{"title":"Main.class <span style='color:#111;'> 904B </span>","children":null,"spread":false},{"title":"ArithmeticGenerator$1.class <span style='color:#111;'> 688B </span>","children":null,"spread":false},{"title":"ArithmeticGenerator.class <span style='color:#111;'> 11.21KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true},{"title":".idea","children":[{"title":"libraries","children":[{"title":"commons_math3_3_6_1.xml <span style='color:#111;'> 232B </span>","children":null,"spread":false},{"title":"poi_5_0_0.xml <span style='color:#111;'> 212B </span>","children":null,"spread":false},{"title":"commons_pool2_2_8_1.xml <span style='color:#111;'> 232B </span>","children":null,"spread":false}],"spread":true},{"title":"workspace.xml <span style='color:#111;'> 13.87KB </span>","children":null,"spread":false},{"title":"misc.xml <span style='color:#111;'> 282B </span>","children":null,"spread":false},{"title":"inspectionProfiles","children":[{"title":"Project_Default.xml <span style='color:#111;'> 1.41KB </span>","children":null,"spread":false}],"spread":true},{"title":"modules.xml <span style='color:#111;'> 257B </span>","children":null,"spread":false},{"title":".gitignore <span style='color:#111;'> 190B </span>","children":null,"spread":false},{"title":"encodings.xml <span style='color:#111;'> 138B </span>","children":null,"spread":false}],"spread":true},{"title":"commons-math3-3.6.1.jar <span style='color:#111;'> 2.11MB </span>","children":null,"spread":false},{"title":".gitignore <span style='color:#111;'> 344B </span>","children":null,"spread":false},{"title":"poi-5.0.0.jar <span style='color:#111;'> 2.77MB </span>","children":null,"spread":false},{"title":"problems1.txt <span style='color:#111;'> 57B </span>","children":null,"spread":false},{"title":"commons-pool2-2.8.1.jar <span style='color:#111;'> 129.99KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]