Question

1. Write a Java method that takes a String as Input and replaces the first two occurrencesof a given character to another provided character.  

For example, if the input String is “Java is Great” and asked to replace the letter a with x then the output would be: “Jxvx is Great” The method takes a String and two characters and returns the modified String. Please make your own assumptions if needed, you do not need to write the main.

Answer 1

Ans

code:-

public static String replaceChar(String s,char a,char b){

int c=0;//number of replacements

for(int i=0;i<s.length()&&c<2;i++){

if(s.charAt(i)==a){//if char a is there replace with b

s= s.substring(0,i)+b+s.substring(i+1);

c++;//increment c

}

}

return s;

}

If any doubt ask in the comments.