create a code where there is a test data, and all the segments of the test data under a certain set y tolerance, as well as their start and end points, would be obtained. in matlab

main.m
% Generate example data
x = [0.5 1.1 0.8 0.9 1.3 2.1 2.2 1.9 1.6 0.7 0.4 -0.2 -0.9 -1.1 -0.8 0.5 1.4 1.9 1.1 -0.4 -1.2 -1.3 -0.5 0.2];
y_tol = 0.5;

% Initialize
n = length(x);
start_idx = [];
end_idx = [];
tolerance_met = false;

% Loop through data
for i = 1:n-1
    % Check if point meets tolerance criteria
    if abs(x(i+1) - x(i)) <= y_tol
        % Add to segment
        if ~tolerance_met
            start_idx = [start_idx i];  % Start new segment
        end
        tolerance_met = true;  % Tolerance has been met for this point
    else
        % End segment
        if tolerance_met
            end_idx = [end_idx i];  % End segment
        end
        tolerance_met = false;  % Tolerance has not been met for this point
    end    
end

% Check if last point is end of a segment
if tolerance_met
    end_idx = [end_idx n];
end

% Display results
num_segments = length(start_idx);
fprintf('Found %d segments:\n', num_segments);
for i_seg = 1:num_segments
    fprintf('Segment %d: indices %d to %d\n', i_seg, start_idx(i_seg), end_idx(i_seg)+1);
end
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