On the first pass of a bubbles sort, when two adjacent elements are compared, if the one on the left has a greater value than the one on the right, they are swapped.

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In bubble sort, during each pass through the array, adjacent elements are compared and swapped if they are in the wrong order, meaning if the left element is greater than the right one, they are swapped to sort the array.

On the First Pass of a Bubbles Sort, When Two