Accenture Coding Question 7
Coding Question 7
You are given a function, Void *ReplaceCharacter(Char str[], int n, char ch1, char ch2);
The function accepts a string ‘ str’ of length n and two characters ‘ch1’ and ‘ch2’ as its arguments . Implement the function to modify and return the string ‘ str’ in such a way that all occurrences of ‘ch1’ in original string are replaced by ‘ch2’ and all occurrences of ‘ch2’ in original string are replaced by ‘ch1’.
Assumption: String Contains only lower-case alphabetical letters.
Note:
- Return null if string is null.
- If both characters are not present in string or both of them are same , then return the string unchanged.
Example:
- Input:
- Str: apples
- ch1:a
- ch2:p
- Output:
- Paales
Explanation:
‘A’ in original string is replaced with ‘p’ and ‘p’ in original string is replaced with ‘a’, thus output is paales.
C
Python
C++
Java
C
#include <stdio.h> #include <string.h> void *ReplaceCharacter(char str[], int n, char ch1, char ch2) { int i; for(i=0; i<n ; i++) { if(str[i]==ch1) { str[i]=ch2; } else if(str[i]==ch2) { str[i]=ch1; } } printf("%s",str); } int main() { char a[100]; char b, c; int len; scanf("%s",a); scanf("%s",&b); scanf("%s",&c); len = strlen(a); ReplaceCharacter(a, len, b, c); return 0; }
Output:
apples
a
p
paales
Python
def swap (user_input, str1, str2):
result = ''
if user_input != None:
result = user_input.replace(str1, '*').replace(str2, str1).replace('*', str2)
return result
return 'Null'
user_input = input()
str1, str2 = map(str,input().split())
print(swap(user_input, str1, str2))Output:
apples
a p
paales
C++
#include <bits/stdc++.h>
using namespace std;
void ReplaceCharacter(string str, char ch1, char ch2)
{
int i;
for(i=0; i<str.size() ; i++)
{
if(str[i]==ch1)
{
str[i]=ch2;
}
else if(str[i]==ch2)
{
str[i]=ch1;
}
}
cout<<str;
}
int main()
{
string str;
char ch1, ch2;
int len;
cin>>str>>ch1>>ch2;
ReplaceCharacter(str, ch1, ch2);
return 0;
}
Java
import java.util.*;
class Solution
{
public static void replaceChar (String str, char ch1, char ch2)
{
String res = "";
for (int i = 0; i < str.length (); i++)
{
if (str.charAt (i) == ch1)
res = res + ch2;
else if (str.charAt (i) == ch2)
res = res + ch1;
else
res = res + str.charAt (i);
}
System.out.println (res);
}
public static void main (String[]args)
{
Scanner sc = new Scanner (System.in);
String str = sc.next ();
char ch1 = sc.next ().charAt (0);
char ch2 = sc.next ().charAt (0);
replaceChar (str, ch1, ch2);
}
}
