if ("first"==strfl) console.writeline("the index value returned is : "+ objstring.str.indexofany(c,intstart));
else console.writeline("the index value returned is : "+ objstring.str.lastindexofany(c,intstart));
break; case 3: console.write("enter the string for the character array :"); strchar=console.readline(); c=strchar.tochararray(); console.write("enter the starting index for search :"); intstart=int.parse(console.readline()); console.write("enter the number of characters to searc :"); intcount=int.parse(console.readline()); if ("first"==strfl) console.writeline("the index value returned is : "+ objstring.str.indexofany(c,intstart,intcount));
else console.writeline("the index value returned is : "+ objstring.str.lastindexofany(c,intstart,intcount));
break; case 4: blnstay=false; break; } if (blnstay) mtdindexanyimpl(strvalue,strfl); }
private void mtdinsert() { console.writeline("string.insert(int index,string str) - > this functions returns the original string with 'str' inserted at 'index'");
console.writeline("the original string : " + objstring.str); console.write("enter the string to be inserted : "); string strtmp=console.readline(); console.write("enter the position where it has to be inserted :"); int inttmp=int.parse(console.readline()); objstring.str=objstring.str.insert(inttmp,strtmp); console.writeline("the modified string : " + objstring.str); }
private void mtdjoin() { string[] s={"welcome","to","the","world","of","c#"}; console.writeline("1.string.join(string str,string[] strarr) - > this functions joins the string arrays using 'str'");
console.writeline("2.string.join(string str,string[] strarr,int i,int j) - > this functions joins the string arrays using 'str' starting from the 'i' th array element and 'j' number of elements after it. ");
console.write("enter your choice :"); string strchoice=console.readline(); if ("1"==strchoice) { console.writeline("the string array is :str[0]='welcome',str[1]='to',str[2]='the',str[3]='world',str[4]='of',str[5]='c#'");
console.write("enter the string with which to join : "); string strtmp=console.readline(); console.writeline("the joint string is : " + string.join(strtmp,s)); } else { console.writeline("the string array is :str[0]='welcome',str[1]='to',str[2]='the',str[3]='world',str[4]='of',str[5]='c#'");
console.write("enter the string with which to join : "); string strtmp=console.readline(); console.write("enter the starting index of the array : "); int intstart=int.parse(console.readline()); console.write("enter the number of elements to join :" ); int intcount=int.parse(console.readline()); console.writeline("the joint string is : " + string.join(strtmp,s,intstart,intcount));
} }
private void mtdlastindex() { console.writeline("string.lastindexof() - > this returns the index of the last occurence of a charcter or string in the given string.");
console.writeline("the search of the string stops when the required value is founds or proceedes until the beginning of the string has been reached");
console.writeline("it returns the index if the value is found or '-1' if not found."); mtdindeximpl("lastindex","last");
}
private void mtdlastindexany() { console.writeline("string.lastindexofany() - > this returns the index of the last occurence of any charcter of the character array in the given string.");
console.writeline("the search of the string stops when the required value is founds or proceedes until the beginning of the string has been reached");
console.writeline("it returns the index if the value is found or '-1' if not found."); mtdindexanyimpl("lastindex","last"); }
private void mtdlength() { console.writeline("string.length - > this property returns the length of the string."); console.writeline("the length of '"+objstring.str+"' is : "+objstring.str.length); }
private void mtdpadleft() { mtdpad("left"); }
private void mtdpad(string strval) { console.writeline("string.pad"+strval+"() - > this method pads spaces or some other character to the "+strval+" of the string");
console.writeline("string.pad"+strval+"(int i) -> fills spaces to the "+strval+" of the string, 'i' specifies the length of the string along with spaces");
console.writeline("string.pad"+strval+"(int i,char c) -> fills the character 'c' to the "+strval+" of the string, 'i' specifies the length of the string along with spaces");
console.writeline("the original string :"+objstring.str ); console.write("enter the length of the desired string : "); int intstart=int.parse(console.readline()); console.write("enter the character to be padded(enter nothing for spaces) :"); string strtmp=console.readline(); if(!strtmp.equals("")) { char c=(strtmp.tochararray())[0]; if ("left"==strval) console.writeline("the padded string : " + objstring.str.padleft(intstart,c)); else console.writeline("the padded string : " + objstring.str.padright(intstart,c)); } else if ("left"==strval) console.writeline("the padded string : " + objstring.str.padleft(intstart)); else console.writeline("the padded string : " + objstring.str.padright(intstart));
}
private void mtdpadright() { mtdpad("right"); }
private void mtdremove() { console.writeline("string.remove(int i,int j) - > removes a part of the string.'i' represents the start position and 'j' represents the length of string to be removed.");
console.writeline("the original string : "+objstring.str); console.write("enter the starting position : "); int intstart=int.parse(console.readline()); console.write("enter the length of string to be removed :"); int intlength=int.parse(console.readline()); console.writeline("the string after removal :"+objstring.str.remove(intstart,intlength)); }
private void mtdreplace() { console.writeline("string.replace() - > replaces a character with another character or a string with another string throughout the given string");
console.writeline("1. string.replace(char cold,char cnew) -> replaces all occurances 'cold' with 'cnew'");
console.writeline("2. string.replace(string sold,strin snew) -> replaces all occurances of 'sold' with 'snew'");
console.write("enter your choice :"); int intchoice=int.parse(console.readline()); console.writeline("the original string is :"+objstring.str); if (1==intchoice) { console.write("enter the character to be replaced :"); char cold=(console.readline().tochararray())[0]; console.write("enter the new character :"); char cnew=(console.readline().tochararray())[0]; console.writeline("the string after replacing : "+objstring.str.replace(cold,cnew)); } else { console.write("enter the string to be replaced :"); string sold=console.readline(); console.write("enter the new string :"); string snew=console.readline(); console.writeline("the string after replacing : "+objstring.str.replace(sold,snew));
} }
private void mtdsplit() { console.writeline("this will be done later."); }
private void mtdstartswith() { console.writeline("string.startswith(string str) - > returns a boolean value indicating whether the string starts with 'str'");
console.writeline("the original string : "+ objstring.str); console.write("enter the string to search for :"); string strtmp=console.readline(); if (objstring.str.startswith(strtmp)) console.writeline("the string '"+objstring.str+"' starts with '"+strtmp+"'."); else console.writeline("the string '"+objstring.str+"' does not starts with '"+strtmp+"'."); }
private void mtdsubstr() { console.writeline("string.substring() - > retrieves a part of the string from the original string"); console.writeline("1. string.substring(int i) -> retrieves the string starting from 'i'(zero based)"); console.writeline("2. string.substring(int i,int j) -> retrieves the string starting from 'i' and having a length 'j'.");
console.write("enter your choice :"); int intchoice=int.parse(console.readline()); int intstart,intlength; console.writeline("the original string :"+objstring.str); if (1==intchoice) { console.write("enter the position from where the substring should start :"); intstart=int.parse(console.readline()); console.writeline("the retrieved substring is :"+objstring.str.substring(intstart)); } else { console.write("enter the position from where the substring should start :"); intstart=int.parse(console.readline()); console.write("enter the length of the substring:"); intlength=int.parse(console.readline()); console.writeline("the retrieved substring is :"+objstring.str.substring(intstart,intlength)); } }
private void mtdlower() { console.writeline("string.tolower() - > returns the string with all its characters in lower case"); console.writeline("the original string : " + objstring.str); console.writeline("the string in lower case : " +objstring.str.tolower()); }
private void mtdupper() { console.writeline("string.toupper() - > returns the string with all its characters in upper case"); console.writeline("the original string : " + objstring.str); console.writeline("the string in upper case : " +objstring.str.toupper()); }
private void mtdtrim() { console.writeline("string.trim() - > removes white space characters from the begininning and end of the string and also specified characters.");
console.writeline("1. string.trim() -> removes white space characters from beginning and end of the string.");
console.writeline("2. string.trim(char[] c) -> removes all occurances of set of characters in the array from the beginning and end of string.");
console.write("enter your choice :"); int intchoice=int.parse(console.readline()); console.writeline("the original string : " +objstring.str); if (1==intchoice) { console.writeline("the trimmed string is : "+objstring.str.trim()); } else { console.write("enter the character array : "); char[] c=console.readline().tochararray(); console.writeline("the string after removing characters from the array : " + objstring.str.trim(c));
} }
private void mtdtrimend() { console.writeline("string.trimend(char[] c) - > removes all occurances of the set of characters in the array from the end of the string.");
console.writeline("the original string is : " + objstring.str); console.write("enter the character array : "); char[] c=console.readline().tochararray(); console.writeline("the modified string is : "+objstring.str.trimend(c)); }
private void mtdtrimstart() { console.writeline("string.trimstart(char[] c) - > removes all occurances of the set of characters in the array from the start of the string.");
console.writeline("the original string is : " + objstring.str); console.write("enter the character array : "); char[] c=console.readline().tochararray(); console.writeline("the modified string is : "+objstring.str.trimstart(c)); } } (转贴)
