CSC300 / CSC402: Printing lo and hi [7/7] |
01 |
public static boolean contains (double val, double[] list) { int lo = 0; int hi = list.length - 1; while (lo <= hi) { StdOut.format("%4d ", hi-lo+1); int mid = lo + (hi-lo)/2; if (val > list[mid]) lo = mid + 1; else if (val < list[mid]) hi = mid - 1; else return true; } StdOut.format("%4d ", hi-lo+1); return false; } |
Output
[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0,... 1023 511 255 127 63 31 15 7 // yes 1023 511 255 127 63 31 15 7 3 1 // yes 1023 511 255 127 63 31 15 7 3 1 0 // NO 1023 511 255 127 63 31 15 7 3 1 0 // NO 1023 511 255 127 63 31 15 7 // yes 1023 511 255 127 63 31 15 7 3 1 // yes 1023 511 255 127 63 31 15 7 3 1 0 // NO 1023 511 255 127 63 31 15 7 3 1 0 // NO 1023 511 255 127 63 31 15 7 3 1 0 // NO 1023 511 255 127 63 31 15 7 3 1 // yes found 5/ 10