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- 1970-1-1
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增加几个空集的Test Case- Set s4 = new Set();
- System.out.println("Empty Set s4 = " + s4);
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- System.out.println("s4.cardinality() = " + s4.cardinality());
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- s4.union(s4);
- System.out.println("After s4.union(s4), s4 = " + s4);
- s4.intersect(s4);
- System.out.println("After s4.intersect(s4), s4 = " + s4);
- s3.union(s4);
- System.out.println("After s3.union(s4), s3 = " + s3);
- s3.intersect(s4);
- System.out.println("After s3.intersect(s4), s3 = " + s3);
复制代码
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