# Recent questions and answers in Tier 1 Placement Questions 6 votes
4 answers
1
A bad king has a cellar of 1000 bottles of delightful and very expensive wine. A neighboring queen plots to kill the bad king and sends a servant to poison the wine. Fortunately (or say unfortunately) the bad king's guards catch the servant after he has only poisoned one bottle. ... is in mind of the king, how will he be able to do so ? (of course he has less then 1000 prisoners in his prisons)
1 vote
4 answers
2
Given an input string of length $n$, find the maximum length of the substring containing maximum $k$ unique characters. For example, for "abbcdaadcd" and $k=2$ answer will be 4 for the substring "daad".
0 votes
0 answers
3
Given a non negative integer A, following code tries to find all pair of integers (a, b) such that a and b are positive integers a <= b, and a2 + b2 = A. 0 <= A <= 100000 However, the code has a small bug. Correct the bug and submit the code. vector<vector<int> > ... a + b * b == A) { vector<int> newEntry; newEntry.push_back(a); newEntry.push_back(b); ans.push_back(newEntry); } } } return ans; }
0 votes
1 answer
4
Input You are given a template in which you need to implement a function whose signature is given below. C int findWordInAGrid(char grid, int m, int n, char word) /* return 0 for false, 1 for true. */ C++ bool findWordInAGrid(char grid, ... are: abc abedhi efgh Output: The output of the above example should be: abc: true abedhi: true efgh: false Constraints 1 ≤ m,n ≤ 100
1 vote
1 answer
5
\begin{align*} & a[n] = \{x_1,x_2,x_3,x_4,....,x_n\} \text{ is an array of integers where } n,x_i > 0. \\ & A = \left [ \text{min}\left ( x_i,x_j \right ) \right ] \cdot \left ( j-i \right ) \text{ where } j > i \text{ and } i,j \leq n \\ & \text{What is the best time complexity to find out the value of } A_{\bf max} \; ? \end{align*}
2 votes
2 answers
6
Given an array of $n$ elements find the maximum continuous sum in it. For example consider the below array of $n=6$. 23 4 -10 2 15 1 Answer is 35.
3 votes
2 answers
7
Given a linked list : 1->2->3->4->5->6, make the following changes 1->6->2->5->3->4 What would be the most effiicient way to make this change?
0 votes
2 answers
8
Write a function (proper programming code) for multiplying two integers without using '*' operator and considering all corner cases.
1 vote
0 answers
9
Write an object oriented code for representing boolean expressions and then a function for checking the equivalence of two boolean expressions.
0 votes
0 answers
10
Given an arithmetic expression involving *, + only write an object oriented code for its representation and evaluation
2 votes
1 answer
11
Given an array with possible repeating elements you have to rearrange such that elements are alternatively decreasing and increasing (strict increase/decrease). For example, suppose the given array is 1 1 2 3 4 5 one possible answer would be 2 1 3 1 5 4. Assumption: Solution do exist for any given input. Hint: Try to avoid sorting.
3 votes
1 answer
12
How to generate permutation of a string? What will be the complexity?
1 vote
1 answer
13
main() { int arr2D; printf("%d\n", ((arr2D==* arr2D)&&(* arr2D == arr2D)) ); }
0 votes
2 answers
14
12 votes
3 answers
15
An anthropologist is visiting the island of knights and knaves one after the other.. This particular island is a very peculiar place, for it has only two kinds of inhabitants, namely, knights and knaves! Now, knights always tell the truth and knaves always lie! There are cluster of island on ... Maya. B: A is a knave, and this is the island of Maya. Is this the island of Maya? What are A and B ?
2 votes
1 answer
16
You are given a number lock of 4 digits and it accepts a serial input. What should be the minimum length of an input string so that the lock is guaranteed to open assuming it opens if any of the consecutive 4 digits matches the code. Also how to get one such sequence?
1 vote
1 answer
17
According to me first we sort the array in O(nlogn) time and then in O(k) time , find the product , so total time complexity is O(nlogn) , so am I right or can it be done in lesser time ?
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