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1、正则表达式规则{}指定重复范围,如:a{3,5} 可表示 : aaaaa,aaaa,aaa
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import java.util.*; public class LetterASort { public static void main(String[] args) { ArrayList strings = new ArrayList(); strings.add(‟aAaA”); strings.add(”AaA”); strings.add(‟aAa”); strings.add(”AAaa”); Collections.sort(strings); for (String s: strings) { System.out.print(s + “ “); } } } What is the result?() A、 Compilation fails.B、 aAaA aAa AAaa AaAC、 AAaa AaA aAa aAaAD、 AaA AAaa aAaA aAaE、 aAa AaA aAaA AAaaF、 An exception is thrown at runtime.
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单选题What is the result?()A
Compilation fails.B
aAaA aAa AAaa AaAC
AAaa AaA aAa aAaAD
AaA AAaa aAaA aAaE
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An exception is thrown at runtime.
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单选题import java.util.*; public class LetterASort { public static void main(String[] args) { ArrayList strings = new ArrayList(); strings.add(‟aAaA”); strings.add(”AaA”); strings.add(‟aAa”); strings.add(”AAaa”); Collections.sort(strings); for (String s: strings) { System.out.print(s + “ “); } } } What is the result?()A
Compilation fails.B
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AAaa AaA aAa aAaAD
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