# Senior Software Engineer Interview Questions

Senior software engineer interview questions shared by candidates

## Top Interview Questions

Write a function that divides one number by another, without using the division operator, and make it better than O(n). This can be done in a recursive function, the following code is in Python. # get result of a/b without using a "divide" operator def div(a,b): if a < b: return 0 else: return div(a-b, b)+1 This is how human being do the division naturally, however, the running time of this is O(n/m), where n is the size of a, and m is the size of b, which means, O(n/m) is guaranteed to be less than O(n), when m is larger than 1. -Maxim The answer above is still O(n). We can use binary search and find the answer in the interval [1,a] and use multiplication operator. Totally agree with Vasil. Other option: Long Division Algorithm. O(log n) anyway. Show more responses |

After asking the details of my current role, he only gave me a simple coding question. Write a function using C++ or Java that is passed an integer and it returns the number of bits set to 1. Is there a way to improve your solution and make it faster and more efficient? |

find LCA for two nodes of a binary tree. |

how to merge two sorted linklist? |

So, you have almost talked to everyone in the building? |

Hackerrank question: valid braces segregate even and odd numbers |

Difficult challenging technical question which I know the answer but I couldn't get it at that time |

siizof() of empty class |

How NAT works? |

find the missing number from a number series from 1 to a milion read in from a db. |

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