find the indices true values which were preceded by 10 false values in an array in matlab

main.m
% example array
arr = [0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1];

% find logical indices for true values
idx_true = arr == 1;

% find logical indices for 10 consecutive false values
idx_false = diff([false, arr == 0]) == 1 & ...
            diff([arr == 0, false]) == -1 & ...
            [false, false, false, false, false, ...
             false, false, false, false, false, ...
             true(1, numel(arr)-10)];

% combine the two to find indices for true values which were 
% preceded by 10 false values
indices = find(idx_true & idx_false)
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