| 1 |
dl |
1.1 |
import java.util.*; |
| 2 |
|
|
|
| 3 |
|
|
public class ListBash { |
| 4 |
|
|
static Random rnd = new Random(); |
| 5 |
|
|
|
| 6 |
|
|
public static void main(String[] args) { |
| 7 |
|
|
int numItr = Integer.parseInt(args[1]); |
| 8 |
|
|
int listSize = Integer.parseInt(args[2]); |
| 9 |
|
|
Class cl = null; |
| 10 |
|
|
|
| 11 |
|
|
try { |
| 12 |
|
|
cl = Class.forName(args[0]); |
| 13 |
|
|
} catch(ClassNotFoundException e) { |
| 14 |
|
|
fail("Class " + args[0] + " not found."); |
| 15 |
|
|
} |
| 16 |
|
|
|
| 17 |
|
|
boolean synch = (args.length>3); |
| 18 |
|
|
|
| 19 |
|
|
for (int i=0; i<numItr; i++) { |
| 20 |
|
|
List s1 = newList(cl, synch); |
| 21 |
|
|
AddRandoms(s1, listSize); |
| 22 |
|
|
|
| 23 |
|
|
List s2 = newList(cl, synch); |
| 24 |
|
|
AddRandoms(s2, listSize); |
| 25 |
|
|
|
| 26 |
|
|
List intersection = clone(s1, cl,synch);intersection.retainAll(s2); |
| 27 |
|
|
List diff1 = clone(s1, cl, synch); diff1.removeAll(s2); |
| 28 |
|
|
List diff2 = clone(s2, cl, synch); diff2.removeAll(s1); |
| 29 |
|
|
List union = clone(s1, cl, synch); union.addAll(s2); |
| 30 |
|
|
|
| 31 |
|
|
if (diff1.removeAll(diff2)) |
| 32 |
|
|
fail("List algebra identity 2 failed"); |
| 33 |
|
|
if (diff1.removeAll(intersection)) |
| 34 |
|
|
fail("List algebra identity 3 failed"); |
| 35 |
|
|
if (diff2.removeAll(diff1)) |
| 36 |
|
|
fail("List algebra identity 4 failed"); |
| 37 |
|
|
if (diff2.removeAll(intersection)) |
| 38 |
|
|
fail("List algebra identity 5 failed"); |
| 39 |
|
|
if (intersection.removeAll(diff1)) |
| 40 |
|
|
fail("List algebra identity 6 failed"); |
| 41 |
|
|
if (intersection.removeAll(diff1)) |
| 42 |
|
|
fail("List algebra identity 7 failed"); |
| 43 |
|
|
|
| 44 |
|
|
intersection.addAll(diff1); intersection.addAll(diff2); |
| 45 |
|
|
if (!(intersection.containsAll(union) && |
| 46 |
|
|
union.containsAll(intersection))) |
| 47 |
|
|
fail("List algebra identity 1 failed"); |
| 48 |
|
|
|
| 49 |
|
|
Iterator e = union.iterator(); |
| 50 |
|
|
while (e.hasNext()) |
| 51 |
|
|
intersection.remove(e.next()); |
| 52 |
|
|
if (!intersection.isEmpty()) |
| 53 |
|
|
fail("Copy nonempty after deleting all elements."); |
| 54 |
|
|
|
| 55 |
|
|
e = union.iterator(); |
| 56 |
|
|
while (e.hasNext()) { |
| 57 |
|
|
Object o = e.next(); |
| 58 |
|
|
if (!union.contains(o)) |
| 59 |
|
|
fail("List doesn't contain one of its elements."); |
| 60 |
|
|
e.remove(); |
| 61 |
|
|
} |
| 62 |
|
|
if (!union.isEmpty()) |
| 63 |
|
|
fail("List nonempty after deleting all elements."); |
| 64 |
|
|
|
| 65 |
|
|
s1.clear(); |
| 66 |
|
|
if (s1.size() != 0) |
| 67 |
|
|
fail("Clear didn't reduce size to zero."); |
| 68 |
|
|
|
| 69 |
|
|
s1.addAll(0, s2); |
| 70 |
|
|
if (!(s1.equals(s2) && s2.equals(s1))) |
| 71 |
|
|
fail("addAll(int, Collection) doesn't work."); |
| 72 |
|
|
// Reverse List |
| 73 |
|
|
for (int j=0, n=s1.size(); j<n; j++) |
| 74 |
|
|
s1.set(j, s1.set(n-j-1, s1.get(j))); |
| 75 |
|
|
// Reverse it again |
| 76 |
|
|
for (int j=0, n=s1.size(); j<n; j++) |
| 77 |
|
|
s1.set(j, s1.set(n-j-1, s1.get(j))); |
| 78 |
|
|
if (!(s1.equals(s2) && s2.equals(s1))) |
| 79 |
|
|
fail("set(int, Object) doesn't work"); |
| 80 |
|
|
} |
| 81 |
|
|
|
| 82 |
|
|
List s = newList(cl, synch); |
| 83 |
|
|
for (int i=0; i<listSize; i++) |
| 84 |
|
|
s.add(new Integer(i)); |
| 85 |
|
|
if (s.size() != listSize) |
| 86 |
|
|
fail("Size of [0..n-1] != n"); |
| 87 |
|
|
|
| 88 |
|
|
List even = clone(s, cl, synch); |
| 89 |
|
|
Iterator it = even.iterator(); |
| 90 |
|
|
while(it.hasNext()) |
| 91 |
|
|
if(((Integer)it.next()).intValue() % 2 == 1) |
| 92 |
|
|
it.remove(); |
| 93 |
|
|
it = even.iterator(); |
| 94 |
|
|
while(it.hasNext()) |
| 95 |
|
|
if(((Integer)it.next()).intValue() % 2 == 1) |
| 96 |
|
|
fail("Failed to remove all odd nubmers."); |
| 97 |
|
|
|
| 98 |
|
|
List odd = clone(s, cl, synch); |
| 99 |
|
|
for (int i=0; i<(listSize/2); i++) |
| 100 |
|
|
odd.remove(i); |
| 101 |
|
|
for (int i=0; i<(listSize/2); i++) { |
| 102 |
|
|
int ii = ((Integer)odd.get(i)).intValue(); |
| 103 |
|
|
if(ii % 2 != 1) |
| 104 |
|
|
fail("Failed to remove all even nubmers. " + ii); |
| 105 |
|
|
} |
| 106 |
|
|
|
| 107 |
|
|
List all = clone(odd, cl, synch); |
| 108 |
|
|
for (int i=0; i<(listSize/2); i++) |
| 109 |
|
|
all.add(2*i, even.get(i)); |
| 110 |
|
|
if (!all.equals(s)) |
| 111 |
|
|
fail("Failed to reconstruct ints from odds and evens."); |
| 112 |
|
|
|
| 113 |
|
|
all = clone(odd, cl, synch); |
| 114 |
|
|
ListIterator itAll = all.listIterator(all.size()); |
| 115 |
|
|
ListIterator itEven = even.listIterator(even.size()); |
| 116 |
|
|
while (itEven.hasPrevious()) { |
| 117 |
|
|
itAll.previous(); |
| 118 |
|
|
itAll.add(itEven.previous()); |
| 119 |
|
|
itAll.previous(); // ??? |
| 120 |
|
|
} |
| 121 |
|
|
itAll = all.listIterator(); |
| 122 |
|
|
while (itAll.hasNext()) { |
| 123 |
|
|
Integer i = (Integer)itAll.next(); |
| 124 |
|
|
itAll.set(new Integer(i.intValue())); |
| 125 |
|
|
} |
| 126 |
|
|
itAll = all.listIterator(); |
| 127 |
|
|
it = s.iterator(); |
| 128 |
|
|
while(it.hasNext()) |
| 129 |
|
|
if(it.next()==itAll.next()) |
| 130 |
|
|
fail("Iterator.set failed to change value."); |
| 131 |
|
|
|
| 132 |
|
|
if (!all.equals(s)) |
| 133 |
|
|
fail("Failed to reconstruct ints with ListIterator."); |
| 134 |
|
|
|
| 135 |
|
|
it = all.listIterator(); |
| 136 |
|
|
int i=0; |
| 137 |
|
|
while (it.hasNext()) { |
| 138 |
|
|
Object o = it.next(); |
| 139 |
|
|
if (all.indexOf(o) != all.lastIndexOf(o)) |
| 140 |
|
|
fail("Apparent duplicate detected."); |
| 141 |
|
|
if (all.subList(i, all.size()).indexOf(o) != 0) { |
| 142 |
|
|
System.out.println("s0: " + all.subList(i, all.size()).indexOf(o)); |
| 143 |
|
|
fail("subList/indexOf is screwy."); |
| 144 |
|
|
} |
| 145 |
|
|
if (all.subList(i+1, all.size()).indexOf(o) != -1) { |
| 146 |
|
|
System.out.println("s-1: " + all.subList(i+1, all.size()).indexOf(o)); |
| 147 |
|
|
fail("subList/indexOf is screwy."); |
| 148 |
|
|
} |
| 149 |
|
|
if (all.subList(0,i+1).lastIndexOf(o) != i) { |
| 150 |
|
|
System.out.println("si" + all.subList(0,i+1).lastIndexOf(o)); |
| 151 |
|
|
fail("subList/lastIndexOf is screwy."); |
| 152 |
|
|
} |
| 153 |
|
|
i++; |
| 154 |
|
|
} |
| 155 |
|
|
|
| 156 |
|
|
List l = newList(cl, synch); |
| 157 |
|
|
AddRandoms(l, listSize); |
| 158 |
|
|
Integer[] ia = (Integer[]) l.toArray(new Integer[0]); |
| 159 |
|
|
if (!l.equals(Arrays.asList(ia))) |
| 160 |
|
|
fail("toArray(Object[]) is hosed (1)"); |
| 161 |
|
|
ia = new Integer[listSize]; |
| 162 |
|
|
Integer[] ib = (Integer[]) l.toArray(ia); |
| 163 |
|
|
if (ia != ib || !l.equals(Arrays.asList(ia))) |
| 164 |
|
|
fail("toArray(Object[]) is hosed (2)"); |
| 165 |
|
|
ia = new Integer[listSize+1]; |
| 166 |
|
|
ia[listSize] = new Integer(69); |
| 167 |
|
|
ib = (Integer[]) l.toArray(ia); |
| 168 |
|
|
if (ia != ib || ia[listSize] != null |
| 169 |
|
|
|| !l.equals(Arrays.asList(ia).subList(0, listSize))) |
| 170 |
|
|
fail("toArray(Object[]) is hosed (3)"); |
| 171 |
|
|
|
| 172 |
|
|
System.out.println("Success."); |
| 173 |
|
|
} |
| 174 |
|
|
|
| 175 |
|
|
// Done inefficiently so as to exercise toArray |
| 176 |
|
|
static List clone(List s, Class cl, boolean synch) { |
| 177 |
|
|
List a = Arrays.asList(s.toArray()); |
| 178 |
|
|
if (s.hashCode() != a.hashCode()) |
| 179 |
|
|
fail("Incorrect hashCode computation."); |
| 180 |
|
|
|
| 181 |
|
|
List clone = newList(cl, synch); |
| 182 |
|
|
clone.addAll(a); |
| 183 |
|
|
if (!s.equals(clone)) |
| 184 |
|
|
fail("List not equal to copy."); |
| 185 |
|
|
if (!s.containsAll(clone)) |
| 186 |
|
|
fail("List does not contain copy."); |
| 187 |
|
|
if (!clone.containsAll(s)) |
| 188 |
|
|
fail("Copy does not contain list."); |
| 189 |
|
|
|
| 190 |
|
|
return clone; |
| 191 |
|
|
} |
| 192 |
|
|
|
| 193 |
|
|
static List newList(Class cl, boolean synch) { |
| 194 |
|
|
try { |
| 195 |
|
|
List s = (List)cl.newInstance(); |
| 196 |
|
|
if (synch) |
| 197 |
|
|
s = Collections.synchronizedList(s); |
| 198 |
|
|
if (!s.isEmpty()) |
| 199 |
|
|
fail("New instance non empty."); |
| 200 |
|
|
return s; |
| 201 |
|
|
} catch(Throwable t) { |
| 202 |
|
|
fail("Can't instantiate " + cl + ": " + t); |
| 203 |
|
|
} |
| 204 |
|
|
return null; //Shut up compiler. |
| 205 |
|
|
} |
| 206 |
|
|
|
| 207 |
|
|
static void AddRandoms(List s, int n) { |
| 208 |
|
|
for (int i=0; i<n; i++) { |
| 209 |
|
|
int r = rnd.nextInt() % n; |
| 210 |
|
|
Integer e = new Integer(r < 0 ? -r : r); |
| 211 |
|
|
|
| 212 |
|
|
int preSize = s.size(); |
| 213 |
|
|
if (!s.add(e)) |
| 214 |
|
|
fail ("Add failed."); |
| 215 |
|
|
int postSize = s.size(); |
| 216 |
|
|
if (postSize-preSize != 1) |
| 217 |
|
|
fail ("Add didn't increase size by 1."); |
| 218 |
|
|
} |
| 219 |
|
|
} |
| 220 |
|
|
|
| 221 |
|
|
static void fail(String s) { |
| 222 |
|
|
System.out.println(s); |
| 223 |
|
|
System.exit(1); |
| 224 |
|
|
} |
| 225 |
|
|
} |
