How can I randomly select smaller values with higher probabilities?

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Stephanie Diaz 2018-3-1

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https://ww2.mathworks.cn/matlabcentral/answers/385580-how-can-i-randomly-select-smaller-values-with-higher-probabilities

编辑： Stephanie Diaz 2018-3-1

I have a column vector "distances", and I want to select a value randomly from this vector such that smaller values have a higher probability of being selected. So far I am using the following, where "possible_cells" is the randomly selected value:

w=(fliplr(1:numel(distances)))/100
possible_cells=randsample((sort(distances)),1,true,w)

Basically, I flipped a second vector of the same size as "distances" to create probabilities of selection "w" (if I am understanding randsample correctly), so that the smallest value has the highest probability of being selected. To check how well this works, I randomly drew 50 values and by using a histogram, I see that the values are higher than I would expect. Does anyone have any idea on how else to do what I described above?