01. First declare double vector with name vecLane: Fill vecLane with 0.1, 0.2, 0

Question

01. First declare double vector with name vecLane: Fill vecLane with 0.1, 0.2, 0.3, 0.4, 0.5: Then write the statement to find the ending location of vecLane and assign it to iterator pos: Then move back iterator pos one position: Then retrieve the item in the above iterator and output it to the screen:

02. What is the output of the following? deque d; for (int i = 25; i < 30; i++) { if (i % 2 != 0) d.push_front(i); else d.push_back(i); } while (!d.empty() ) { cout << d.back(); d.pop_back(); }

03.What is the output of the following program segment? vector intVector; vector::iterator vecIt; intVector.push_back(3); intVector.push_back(5); intVector.push_back(7); vecIt = intVector.begin( ); vecIt++; intVector.erase(vecIt); intVector.push_back(9); for(int i = 0; i < intVector.size(); i++) cout << intVector[i];

04.  What is the ouput of the following function F, for the call int i = F(3)? int F(int n) { int result; if (n > 20) return 1; else { result = F(2*n) * 2; cout << result << " "; return result; } }

05. int Wow (int n, int m) { if (m ==1) return n; if ( n == m) return 1; return Wow(n - 1, m - 1) + Wow (n - 1 , m); } What will Wow(5 , 2) return?

Explanation / Answer

#include<iostream>
#include<vector>

using namespace std;

int main(void)
{
vector<double> vecLane;

vecLane.push_back(0.1);
vecLane.push_back(0.2);
vecLane.push_back(0.3);
vecLane.push_back(0.4);
vecLane.push_back(0.5);

//pointing to end of the vector and move in reverse direction
vector<double>::reverse_iterator it=vecLane.rbegin();

it++;

cout<<*it;
return 0;
}

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Ans-2) output is 28 26 25 27 29

There was problem in dqueue declaration

it shuold be deque<int> d;

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Ans-3) output: 3 7 9

There was problem in vector declaration

it shuold be vector<int> intVector;

vector<int>::iterator vecIt

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Ans-4) output: 2 4 8 8

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Ans-5) output: 10

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