This may leave some weeks uncovered in in the result. Is that ok? On Mon, Apr 1, 2019, 12:18 PM R.E. Boss <[email protected]> wrote:
> Given a series of intervals of weeks, given by the begin week up to and > including the end week, each week denoted by yyww, with yy last two digits > of year and ww the weeknumber. > +---------+---------+---------+---------+---------+ > |1643 1646|1715 1720|1743 1750|1814 1824|1840 1907| > |1644 1646|1716 1720|1744 1746|1815 1816|1841 1842| > |1645 1650|1718 1724|1745 1750|1816 1820|1842 1846| > |1646 1650|1719 1724|1746 1749|1817 1820|1843 1846| > |1648 1703|1721 1737|1748 1803|1818 1824|1844 1846| > |1649 1729|1724 1729|1749 1750|1820 1911|1845 1846| > |1650 1711|1725 1737|1750 1820|1821 1824|1846 1851| > |1651 1707|1726 1729|1751 1803|1824 1838|1848 1907| > |1701 1707|1727 1729|1801 1803|1825 1829|1851 1903| > |1702 1707|1729 1742|1803 1820|1826 1829|1901 1903| > |1703 1707|1730 1737|1804 1816|1827 1829|1902 1903| > |1706 1711|1732 1733|1805 1824|1828 1838|1907 1911| > |1707 1711|1732 1803|1806 1807|1829 1833|1908 1911| > |1708 1711|1733 1746|1807 1811|1830 1833|1911 1916| > |1709 1720|1734 1742|1808 1811|1831 1833| | > |1710 1737|1736 1746|1809 1811|1832 1833| | > |1711 1724|1737 1742|1810 1811|1833 1838| | > |1712 1720|1738 1742|1811 1911|1834 1838| | > |1713 1724|1741 1746|1812 1816|1838 1907| | > |1714 1716|1742 1750|1813 1816|1839 1907| | > +---------+---------+---------+---------+---------+ > > Question: starting with the first interval I want all intervals removed > which overlap 4 or more previous intervals, like the 7th interval 1650 1711 > does. > Looplessness required, elegance preferred. > > My solution, which I hope is correct, is > +---------+---------+---------+ > |1643 1646|1741 1746|1830 1833| > |1644 1646|1742 1750|1831 1833| > |1645 1650|1743 1750|1832 1833| > |1646 1650|1748 1803|1834 1838| > |1648 1703|1751 1803|1838 1907| > |1649 1729|1801 1803|1839 1907| > |1651 1707|1804 1816|1840 1907| > |1701 1707|1805 1824|1908 1911| > |1706 1711|1806 1807|1911 1916| > |1708 1711|1807 1811| | > |1709 1720|1808 1811| | > |1712 1720|1812 1816| | > |1713 1724|1813 1816| | > |1721 1737|1817 1820| | > |1724 1729|1818 1824| | > |1725 1737|1820 1911| | > |1730 1737|1821 1824| | > |1732 1733|1825 1829| | > |1732 1803|1826 1829| | > |1738 1742|1827 1829| | > +---------+---------+---------+ > > > R.E. Boss > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
