Colan Infotech PHP Developer Interview Questions and Answers

Medium level coding questions on hackerrank ,1:30hr, topic- Array , DP , Matrix , Binary Search

Q1. Was Asked to Implement Hashmap and Question on OOPS and Dbms , SQL and Indexing
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Q1. Brief Introduction
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Q2. Rotten Oranges and basics of bfs and DFS
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Q1. Different deoendency injection techniques
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Dependency injection is a design pattern used to remove hard-coded dependencies and make components more modular and testable.
• Constructor injection: Dependencies are provided through a class's constructor.

• Setter injection: Dependencies are set through setter methods.

• Interface injection: Dependencies are injected through an interface.

• Spring framework in Java uses dependency injection to manage components.

• Angular framewo...read more
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Q1. Client round about architecture
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2 Programming questions

Q1. String Pool OOPS Internal Working on Hashmap
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String pool is a memory area in Java where strings are stored to optimize memory usage. OOPS stands for Object-Oriented Programming System. HashMap is a data structure in Java that stores key-value pairs.
• String pool in Java is a special memory area where strings are stored to optimize memory usage.

• OOPS stands for Object-Oriented Programming System, a programming paradigm based on the concept of objects.

• HashMap is a dat...read more
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1. how to create a normal form layout like facebook or instagram login page
2. question based on kmp string matching algorithm to check string1 includes string2 or not.
3. validate a form using regex operation .

Q1. Technical questions based upon your skill set & CV like questions upon your projects.
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Q2. 1. basic questions on html css ,js 2. in react redux , props , state , functional , class components .
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Q1. Related to front end technologies like HTML, CSS, JS
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Q1. Basic questions on HTML, CSS, JS Focus on array questions and read methods of array before
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Q1. Managerial round questions based on scenario to check how you think/react on the particular situation
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