Need help in getting algorithms

[Neon92]

Hi all I have this piece of code that works when users States like 20 characters it will get something like from "Hello world good morning" to
Hello world good
But if the user States 1 to 4 characters i need to be able get Hello

 

[cwchong]

Wah, got lazy until dun even copy paste one...

Im guessing ur program limits the string to at most N chars, and discards partial words?
What u want in addition is such that if N < firstword.length, return firstword?

There, the code is above already

 

[Neon92]

Here is the code

std::vector<std::string> StringUtils::WordWrap(const std::string & words, size_t line_length)
	{
		std::vector<std::string> temp;
		std::string tempWords = words;
		bool fullWord = false;
		std::string::size_type i = 0, str_len = words.length();
		while (i < str_len)
		{
			// skip white space
			while (i<str_len && (tempWords[i] == ' ')) { ++i; }

			std::string::size_type j = i;
			
			while (j<str_len && j != line_length + i ) { ++j; }

			while (tempWords[j] != ' ' && j != str_len)
			{
				j--;
			}
			// if we've actually a word ...
			if (i != j) {
				temp.push_back(words.substr(i, j - i));
			}
			i = j;
		}
		return temp;
	}

There are 23 lines wrapped at 20 characters:
Line # 1 [18] |When in the Course|
Line # 2 [19] |of human events, it|
Line # 3 [17] |becomes necessary|
Line # 4 [17] |for one people to|
Line # 5 [12] |dissolve the|
Line # 6 [15] |political bands|
Line # 7 [20] |which have connected|
Line # 8 [18] |them with another,|
Line # 9 [19] |and to assume among|
Line # 10 [17] |the powers of the|
Line # 11 [19] |earth, the separate|
Line # 12 [20] |and equal station to|
Line # 13 [17] |which the Laws of|
Line # 14 [13] |Nature and of|
Line # 15 [20] |Nature's God entitle|
Line # 16 [14] |them, a decent|
Line # 17 [14] |respect to the|
Line # 18 [19] |opinions of mankind|
Line # 19 [18] |requires that they|
Line # 20 [18] |should declare the|
Line # 21 [18] |causes which impel|
Line # 22 [11] |them to the|
Line # 23 [11] |separation.|
Shortest line: 11
Longest line: 20

Not able to do this
There are 11 lines wrapped at 1 characters:
Line # 1 [ 4] |When|
Line # 2 [ 2] |in|
Line # 3 [ 3] |the|
Line # 4 [ 6] |Course|
Line # 5 [ 2] |of|
Line # 6 [ 5] |human|
Line # 7 [ 7] |events,|
Line # 8 [ 2] |it|
Line # 9 [ 7] |becomes|
Line # 10 [ 9] |necessary|
Line # 11 [ 3] |for|
Shortest line: 2
Longest line: 9

 

[cwchong]

After
If(i != j) {
}

Introduce
Else {
/*
If u reach here, means u have not been able to add any words for this line, so just add in the next word u can find
*/
J = i; // reset j to i position to prepare for finding next word
While(tempwords[j] != ' ' && j != str_len) {
++j; // move j until it reach space or end of text
}
J++; // we want to move j to the actual space pos or en od text, so that j-i = len of word
// now there should be a single word between i and j position inclusive, insert that
Temp.push_back(words.substr(i, j - i));
}