Suppose you are given the task of printing all characters in a string str that occur exactly once. For example, given the string "reader", you would print a and d because r and e are repeated. That is not easy, so let's solve a simpler problem first. Does the first character occur exactly once? Start with the algorithm from "Finding the First Match' in the "Common Loop Algorithms" section. You need to modify the algorithm so that you look for the first character, and you need to look for it in the rest of the string. Rearrange the following lines of code to produce a solution. Not all lines are useful. Cancel se Mouse: Drag/drop Keyboard: Grab/release spacebar (or Enter) Move Unused (( while (1found && position str.length()) if (ch "A" || ch "a") (found true; } if (ch target) (found true; } else { position++; } string ch str.substr(position, 1); int position - 01 int position 1; M if (Ifound) (cout << target << occurs once"; ) if (found) (cout << target << occurs once"; } if (found) (cout << ch << occurs once"; ) main.cpp #include #include using namespace std; int main() ( bool found false; string str cin >> stri string target str.substr(0, 1); Load default template... else { cout << target << occurs more than once"; } cout << endl; return 0;

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