Siemens Graduate Trainee Interview Questions, Process, and Tips

Test is about 1 hr and it contains 40 mcqs(both aptitude and coding)

Q1. Level order traversal of binary tree
Ans. 
Level order traversal of binary tree visits nodes level by level, from left to right.
• Use a queue to keep track of nodes at each level

• Start by pushing the root node into the queue

• While the queue is not empty, dequeue a node, visit it, and enqueue its children
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Q2. Question related to OOPS concepts
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Q1. Change the odd bits in the binary form of a given number and convert the new binary into decimal form
Ans. 
To change the odd bits in a binary number, flip the bits at odd positions and convert the new binary number to decimal form.
• Start by converting the given number into binary form.

• Identify the odd bits in the binary number (counting from right to left, starting at 1).

• Flip the odd bits by changing 1s to 0s and 0s to 1s.

• Convert the new binary number into decimal form.

• For example, if the given number is 13 (binary 1101), th...read more
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Q2. Primary vs secondary memory
Ans. 
Primary memory is volatile and directly accessible by the CPU, while secondary memory is non-volatile and used for long-term storage.
• Primary memory is faster but has limited capacity, while secondary memory is slower but has larger capacity.

• Examples of primary memory include RAM and cache memory, while examples of secondary memory include hard drives and SSDs.

• Primary memory stores data that is currently being used by t...read more
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Q1. Find out the second largest integer in an array
Ans. 
Find the second largest integer in an array of strings
• Convert the strings in the array to integers

• Sort the integers in descending order

• Return the second element in the sorted array as the second largest integer
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Q2. Reverse a string
Ans. 
Reverse a string by iterating through the characters and swapping them
• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet
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General Aptitude, Pipes, Time

Q1. Tell me about your self
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Q2. What are your Strenghts
Ans. 
My strengths include strong communication skills, ability to work well in a team, and problem-solving abilities.
• Strong communication skills - able to effectively convey ideas and information

• Ability to work well in a team - collaborate with others to achieve common goals

• Problem-solving abilities - able to analyze situations and come up with effective solutions
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