private String getAllProblems() {
StringBuilder builder = new StringBuilder();
for (Problem problem : problems) {
if (builder.length() > 0) {
builder.append(", ");
}
builder.append(problem.getLine());
builder.append('.');
builder.append(problem.getCharacter());
builder.append(':');
builder.append(problem.getMessage());
}
return builder.toString();
}
private String getPositionFromProblem(int n) {
Problem problem = problems.get(n);
return problem.getLine() + "." + problem.getCharacter();
}
