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How many types of exception can occur in a Java program? There are mainly two types of exceptions: checked and unchecked. Here, an error is considered 阅读全文
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How to make a read-only class in Java? A class can be made read-only by making all of the fields private. The read-only class will have only getter me 阅读全文
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Why is multiple inheritance not supported in java? To reduce the complexity and simplify the language, multiple inheritance is not supported in java. 阅读全文
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What if I write static public void instead of public static void? The program compiles and runs correctly because the order of specifiers doesn't matt 阅读全文
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Description: In a given integer array nums, there is always exactly one largest element. Find whether the largest element in the array is at least twi 阅读全文
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Description: In a row of seats, 1 represents a person sitting in that seat, and 0 represents that the seat is empty. There is at least one empty seat, 阅读全文
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You are given a license key represented as a string S which consists only alphanumeric character and dashes. The string is separated into N+1 groups b 阅读全文
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Description: The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Now your job is to fi 阅读全文
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Description: Given a circular array (the next element of the last element is the first element of the array), print the Next Greater Number for every 阅读全文
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Description: A full binary tree is defined as a binary tree in which all nodes have either zero or two child nodes. Conversely, there is no node in a 阅读全文