Answer / pawan jain

1. Divide the coins in 3 groups of 3 coins each
2. Put 2 groups in the weighing scale
3a. If both the groups weigh equal
1. Pick 2 coins from the 3rd group and put in weighing scale
2. If they weigh equal, the 3rd coin is counterfeit.
Else the coin which weigh more is counterfeit
3b. If they do not weigh equal, pick the group with more
weight and do steps 3a1 and 3a2.

Write a program that takes a 3 digit number n and finds out whether the number 2^n + 1 is prime, or if it is not prime find out its factors.

3 Answers   TCS, Vimukti Technologies, Wipro,

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Write a program using two-dimensional arrays that determines the highest and lowest of the 12 input values. Example: Enter 12 numbers: 13 15 20 13 35 40 16 18 20 18 20 14 highest: 40 lowest: 13

1 Answers  

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What is the time complexity T(n) of the following program? a) int n, d, i, j; cin >> n; for (d=1; d<=n; d++) for (i=1; i<=d; i++) for (j=1; j<=n; j += n/10) cout << d << " " << i << " " << j << endl; b) void main() { int n, s, t; cin >> n; for (s = 1; s <= n/4; s++) {t = s; while (t >= 1) { cout << s << " " << t << endl; t--; } } } c) void main() { int n, r, s, t; cin >> n; for (r = 2; r <= n; r = r * 2) for (s = 1; s <= n/4; s++) { t = s; while (t >= 1) { cout << s << " " << t << endl; t--; } } }

3 Answers   CTS, IBM, Infosys, Qatar University,

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Write a simple encryption program using string function which apply the substitution method.

0 Answers  

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What will be the output- for(i=1;i<=3;i++) { printf("%d",i); continue; i++; }

5 Answers   Impetus,

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how to write a program that opens a file and display in reverse order?

0 Answers   SMC,

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Where now stands that small knot of villages known as the Endians, a mighty forest once stood. Indeed, legand has it that you could have stoodon the edge of the wood and seen it stretch out for miles, were it not for the trees getting in the way. In one section of the forest, the trees stood in a row and were of hight from 1 to n, each hight occurring once and once only. A tree was only visible if there were no higher trees before it in the row. For example, if the heights were 324165, the only visible trees would have been those of height 3,4 & 6. Write a Program that takes an array of integers representing the heights of the trees in the row as input and prints the list of the visible trees.

2 Answers   ABC, Nagarro,

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Given 1 to n random number, find top 10 maximum numbers and explain the time complexity of the algorithm.

1 Answers   IMO, NetApp,

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A suduco given & u hv 2 check if it is incomplete(blanks left),or correct or incorrect

0 Answers  

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write a program to convert temperature from fa height into celcius and vise versa,use modular programming

0 Answers   Jomo Kenyatta University,

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What output does the following code generate? Why? What output does it generate if you make A::Foo() a pure virtual function? class A { A() { this->Foo(); } virtual void Foo() { cout << "A::Foo()" << endl; } }; class B : public A { B() { this->Foo(); } virtual void Foo() { cout << "A::Foo()" << endl; } }; int main(int, char**) { A objectA; B objectB; return 0; }

0 Answers  

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Hello, I am trying to write a program in c++ which accepts month and year from the user and prints the calender. So please tell me the algorithm and what is the calender logic.

0 Answers  

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