# Recent questions and answers in Tier 1 Placement Questions

1
Can anybody please tell me, what is the age limit for ACM ICPC? By next year, I'll be 24, so will I be eligible for the same?
1 vote
2
A) Ω(n) B) θ(n2) C) Ω(n2) D) θ(n)
3
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".
4
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; }
5
Need Explanation for this question: int main() { static int i=5; if(--i) { printf("F=%d\n",i); main(); printf("Hai\n"); printf("%d\n",i); } } Output: F=4 F=3 F=2 F=1 Hai 0 Hai 0 Hai 0 Hai 0
6
Caption
7
the minimal finite automata accepting the set of all strings over { 0, 1} starting with 1 that interpreted as the binary representation of an integer are congruent to 0 modulo 5 has ______ states.
8
Given f(n) = θ(n), g(n) = Ω(n), h(n) = O(n). Then f(n) + [g(n) ⋅ h(n)] = ? how to solve??
9
Input You are given a template in which you need to implement a function whose signature is given below. C int findWordInAGrid(char grid[128][128], int m, int n, char word[32]) /* return 0 for false, 1 for true. */ C++ bool findWordInAGrid(char grid[128][128], ... 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
10
What is expected cut off of nielit held in july, 2017?
1 vote
11
\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*}
12
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.
13
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?
14
Write a function (proper programming code) for multiplying two integers without using '*' operator and considering all corner cases.
1 vote
15
Write an object oriented code for representing boolean expressions and then a function for checking the equivalence of two boolean expressions.
16
Given an arithmetic expression involving *, + only write an object oriented code for its representation and evaluation
17
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.
18
How to generate permutation of a string? What will be the complexity?
1 vote
19
main() { int arr2D[3][3]; printf("%d\n", ((arr2D==* arr2D)&&(* arr2D == arr2D[0])) ); }
20
1 vote
21
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?
22
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