How to write a program to remove all duplicate characters in a string?

1.	How to write a program to remove all duplicate characters in a string?
Answer» #include #include int main() { char str[100]; int i, j, k; printf("\n Please ENTER any String : "); GETS(str); for(i = 0; i < strlen(str); i++) { for(j = i + 1; str[j] != '\0'; j++) { if(str[j] == str[i]) { for(k = j; str[k] != '\0'; k++) { str[k] = str[k + 1]; } } } } printf("\n The FINAL String after Removing All Duplicates = %s ", str); return 0; } Related Article: Google Adwords Interview Questions

Answer»

#include

int main()

{

char str[100];

int i, j, k;

printf("\n Please ENTER any String : ");

GETS(str);

for(i = 0; i < strlen(str); i++)

{

for(j = i + 1; str[j] != '\0'; j++)

{

if(str[j] == str[i])

{

for(k = j; str[k] != '\0'; k++)

{

str[k] = str[k + 1];

}

printf("\n The FINAL String after Removing All Duplicates = %s ", str);

return 0;

}

Related Article: Google Adwords Interview Questions

Discussion