Nsstring traverses each character of the string and replaces the relevant character

Main method: Obtain the substring:

Substringwithrange:

Replacement string:

Stringbyreplacingcharactersinrange: Range

 Nsstring *String=@"This is my name";

For ( Int I = 0 ; I <[ String Length]; I ++ ){
// Truncates each character in a string.
Nsstring * s = [ String Substringwithrange: nsmakerange (I, 1 )];
Nslog ( @" String is % @ " , S );
If ([S isequaltostring: @" M " ]) {
Nsange range = nsmakerange (I, 1 );
// Convert "M" in the string to "W"
String = [ String Stringbyreplacingcharactersinrange: range withstring: @" W " ];

}
}
Nslog ( @" % @ " , String );