question: private static void adjustAbs ( double [ ] array , int lower , int upper ) { int j , k ; double temp ; j = lower ; k = lower * 2 ; while ( k <= upper ) { if ( ( k < upper ) && ( Math . abs ( array [ k - 1 ] ) < Math . abs ( array [ k ] ) ) ) { k += 1 ; } if ( Math . abs ( array [ j - 1 ] ) < Math . abs ( array [ k - 1 ] ) ) { temp = array [ j - 1 ] ; array [ j - 1 ] = array [ k - 1 ] ; array [ k - 1 ] = temp ; } j = k ; k *= 2 ; } }
target:  helps sort an array of doubles. Assumes that array[lower+1] through to array[upper] is already in heap form and then puts array[lower] to array[upper] in heap form.