Skip to main content

PROBLEM SOLVING AND PYTHON PROGRAMMING QUIZ

1) What is the first step in problem-solving? A) Writing code B) Debugging C) Understanding the problem D) Optimizing the solution Answer: C 2) Which of these is not a step in the problem-solving process? A) Algorithm development B) Problem analysis C) Random guessing D) Testing and debugging Answer: C 3) What is an algorithm? A) A high-level programming language B) A step-by-step procedure to solve a problem C) A flowchart D) A data structure Answer: B 4) Which of these is the simplest data structure for representing a sequence of elements? A) Dictionary B) List C) Set D) Tuple Answer: B 5) What does a flowchart represent? A) Errors in a program B) A graphical representation of an algorithm C) The final solution to a problem D) A set of Python modules Answer: B 6) What is pseudocode? A) Code written in Python B) Fake code written for fun C) An informal high-level description of an algorithm D) A tool for testing code Answer: C 7) Which of the following tools is NOT commonly used in pr...

Java important question - 13

What are the ways to initialize a final variable ?
          We must initialize a final variable, otherwise compiler will throw compile time error. A final variable can only be initialize once, either via an initializer or an assignment statement. There are three ways to initialize a final variable,
1) You can initialize a final variable when it is declared. This approach is most common. A final variable is called blank final variable, if it is not initialized while declaration. Below are the two ways to initialize a blank final variable.
2) A blank final variable can be initialized inside constructor. If you have more than one constructor in your class then it must be initialized in all of them, otherwise compile time error will be thrown.
3) A blank final static variable can be initialized inside static block.

What is the difference between transient and volatile variable in Java ?
Transient:
          In Java, it is used to specify the variable is not being serialized. Serialization is the process of saving an object's state in Java. When we want to persist the object's state by default, all instance variables in the object are stored. In some cases, if we want to avoid persisting few variables, declare those variables as transient. If the variable is confirmed as transient, then it will not be persisted. Transient keyword is used with that instance variable which will not participate in the serialization process.
Volatile :
          Volatile modifier tells the compiler that the variable modified by volatile can be changed expectedly by other parts of the program, so writes to the field should always be synchronously flushed to memory, and that reads of the field should always read from memory. Any threads using that variable are not allowed to cache that value at all. This means that fields marked as volatile can be safely acrossed and updated in a multithread application without using native or standard library-based synchronization.

Popular posts from this blog

Abbreviations

No :1 Q. ECOSOC (UN) Ans. Economic and Social Commission No: 2 Q. ECM Ans. European Comman Market No : 3 Q. ECLA (UN) Ans. Economic Commission for Latin America No: 4 Q. ECE (UN) Ans. Economic Commission of Europe No: 5 Q. ECAFE (UN)  Ans. Economic Commission for Asia and the Far East No: 6 Q. CITU Ans. Centre of Indian Trade Union No: 7 Q. CIA Ans. Central Intelligence Agency No: 8 Q. CENTO Ans. Central Treaty Organization No: 9 Q. CBI Ans. Central Bureau of Investigation No: 10 Q. ASEAN Ans. Association of South - East Asian Nations No: 11 Q. AITUC Ans. All India Trade Union Congress No: 12 Q. AICC Ans. All India Congress Committee No: 13 Q. ADB Ans. Asian Development Bank No: 14 Q. EDC Ans. European Defence Community No: 15 Q. EEC Ans. European Economic Community No: 16 Q. FAO Ans. Food and Agriculture Organization No: 17 Q. FBI Ans. Federal Bureau of Investigation No: 18 Q. GATT Ans. General Agreement on Tariff and Trade No: 19 Q. GNLF Ans. Gorkha National Liberation Front No: ...

Operations on data structures

OPERATIONS ON DATA STRUCTURES This section discusses the different operations that can be execute on the different data structures before mentioned. Traversing It means to process each data item exactly once so that it can be processed. For example, to print the names of all the employees in a office. Searching It is used to detect the location of one or more data items that satisfy the given constraint. Such a data item may or may not be present in the given group of data items. For example, to find the names of all the students who secured 100 marks in mathematics. Inserting It is used to add new data items to the given list of data items. For example, to add the details of a new student who has lately joined the course. Deleting It means to delete a particular data item from the given collection of data items. For example, to delete the name of a employee who has left the office. Sorting Data items can be ordered in some order like ascending order or descending order depending ...

The Rise of Green Buildings: A Sustainable Future

In an era where climate change and environmental sustainability dominate global conversations, the concept of green buildings has emerged as a pivotal solution. These structures, designed with both ecological and human health in mind, represent a shift towards more sustainable urban development. But what exactly are green buildings, and why are they so important? What Are Green Buildings? Green buildings, also known as sustainable buildings, are structures that are environmentally responsible and resource-efficient throughout their life cycle—from planning and design to construction, operation, maintenance, renovation, and demolition. This holistic approach seeks to minimize the negative impact of buildings on the environment and human health by efficiently using energy, water, and other resources. Key Features of Green Buildings Energy Efficiency: Green buildings often incorporate advanced systems and technologies to reduce energy consumption. This can include high-efficiency HVAC sys...