Write a Java Program for sorting a given list of names in ascending order
C:\Users\Personal\Desktop\JAVA>java name Enter The number of Names :5 Enter Name 1 : blackberry Enter Name 2 : samsung Enter Name 3 : nokia Enter Name 4 : apple Enter Name 5 : sony Names in Ascending Order apple blackberry nokia samsung sony
20a) Write a C++ program to write a function void to_lower(char* s) that replaces all uppercase characters. Don't use any standard library functions.
Program:
#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
void to_lower(char* s);
int main()
{
string st;
char* s;
cout<<"Enter any string\n";
cin>>st;
s = strdup(st.c_str());
to_lower(s);
cout<<"\n Original string is :"<<st;
cout<<"\n modified string is :"<<s;
return 0;
}
void to_lower(char* s)
{
for(int i=0;s[i]!='\0';i++)
s[i] = (s[i]>='A' && s[i]<='Z')?(s[i]+32):s[i];
}
output:
Enter any string
C++PROGRAMMING
Original string is :C++PROGRAMMING
modified string is :c++programming
20b) b) Write a C++ program to write a function,char* findx(const char* s, const char* x),
that finds the first occurrence of the string x in s.
Program:
#include<iostream>
#include<cstring>
#include<cctype>
using namespace std;
char* findx(const char* s,const char* x);
int main()
{
string st,st1;
char* a;
char* b;
cout<<"Enter any string\n";
getline(cin,st);
cout<<"Enter string to search\n";
cin>>st1;
a = strdup(st.c_str());
b = strdup(st1.c_str());
findx(a,b);
return 0;
}
char* findx(const char* s,const char* x)
{
char* check=new char[10];
int j=0;
int count=0;
for(int i=0;i<=strlen(s);i++)
{
if(isspace(s[i])||s[i]=='\0')
{
check[j]='\0';
j=0;
if(strcmp(check,x)==0)
{
cout<<x<<" is present in the string at index :"<<i-strlen(x)<<endl;
count++;
}
}
else
check[j++]=s[i];
}
if(count==0)
cout<<x <<" is not present in the string \n";
}
output:
Enter any string
Ramu is a naughty boy and he is also intelligent
Enter string to search
is
is is present in the string at index :5
is is present in the string at index :29
C:\Users\Personal\Desktop>
21a) Write a C++ program that reads characters from cin into an array that you allocate on thefree store. Read individual characters until an asterisk (*) is entered. Do not use a std::string.
Program:
#include<iostream>
using namespace std;
int main()
{
int max = 10; // no longer const
char* a= new char[max]; // allocated on heap
int n = 0;
cout<<"Enter the characters of an array\n";
while (cin >> a[n]&&a[n]!='*') //--- Read into the array
{
n++;
}
cout<<"Contents in the array are:\n";
for (int i=0; i<n; i++)
cout<<a[i]<<" ";
}
output:
Enter the characters of an array
abcdefg*
Contents in the array are:
a b c d e f g
21b) Write a C++ program to write a function, char* strdup(const char*) that copies a string
into memory it allocates on the free store. Use the dereference operator * instead.
Program:
#include<iostream>
#include<cstring>
#include<cstdlib>
using namespace std;
char* strdup(const char* s)
{
size_t len = 1+strlen(s);
char *p = (char*)malloc(len);
memcpy(p, s, len);
return p ;
}
int main()
{
char* n=new char[20];
char* copy;
cout<<"enter a string\n";
cin>>n;
copy=strdup(n);
cout<<"Copied string is : "<<copy<<endl;
return 0;
}
output:
enter a string
HelloWorld
Copied string is : HelloWorld
22a) a) Write a C++ program to write a function char* findx(const char* s, const char* x) that find the first occurrence of the string x in s. Use dereference operator * instead. Same as 20a
22b) Write a C++ program to write a function
string cat_dot(const string& s1, const string&s2),
that concatenates two strings with a dot in between.
program:
#include<iostream>
#include<string.h>
using namespace std;
string cat_dot(const string&s1,const string&s2);
int main()
{
string s1,s2,s3;
cout<<"Enter string 1\n";
cin>>s1;
cout<<"Enter string 2\n";
cin>>s2;
s3=cat_dot(s1,s2);
cout<<"After concatenation:\n";
cout<<s3;
}
string cat_dot(const string&s1,const string&s2)
{
string a;
a=s1+"."+s2;
return a;
}
output:
Enter string 1
C++
Enter string 2
Programming
After concatenation:
C++.Programming
22c) Write a template function that adds a vector of elements of an
object of any type to which elements can be added.
program:
#include<iostream>
#include<vector>
using namespace std;
template<class T>
T sum(vector<T>v)
{
T result;
for (int i = 0; i < v.size(); ++i)
result+=v[i];
return result;
}
int main()
{
vector<int>v;
int x,res;
cout<<"Enter the elements of vector\n";
while(cin>>x)
{
v.push_back(x);
}
res=sum(v);
cout<<"sum of all elements is :"<<res<<endl;
}
output:
Enter the elements of vector
1 2 3 4 5 6 7 8 9 10 11 11 *
sum of all elements is :77