previousSetBit
Returns the index of the nearest bit that is set to true that occurs on or before the specified starting index. If no such bit exists, or if -1 is given as the starting index, then -1 is returned.
To iterate over the true bits in a BitSet, use the following loop:
`for (int i = bs.length(); (i = bs.previousSetBit(i-1)) >= 0; ) {
// operate on index i here
}`Return
the index of the previous set bit, or -1 if there is no such bit
Since
1.7
Parameters
fromIndex
the index to start checking from (inclusive)
Throws
if the specified index is less than -1