package net.varkhan.base.containers.array;
import junit.framework.TestCase;
import net.varkhan.base.containers.type.IntContainer;
import net.varkhan.base.containers.type.IntIterable;
import java.util.Random;
/**
* <b></b>.
* <p/>
*
* @author varkhan
* @date 3/24/12
* @time 9:39 PM
*/
public class IntArraysTest extends TestCase {
public static void assertArrayEquals(String message, int[] expected, int[] actual) {
if(expected==null) { if(actual==null) return; }
else if(expected.length==actual.length) {
boolean same = true;
for(int i=0; i<expected.length; i++) if(expected[i]!=actual[i]) { same=false; break; }
if(same) return;
}
fail(message+";\n expected: ["+IntArrays.join(",", expected)+"];\n actual: ["+IntArrays.join(",", actual)+"]");
}
public static int[] reverse(int[] a) {
for(int i1=0, i2=a.length-1; i1<i2; i1++, i2--) {
int t = a[i2];
a[i2] = a[i1];
a[i1] = t;
}
return a;
}
public void testEquals() throws Exception {
assertTrue("equals([],[])", IntArrays.equals(new int[] { }, new int[] { }));
assertTrue("equals([1,2,3,\"6\"],[1,2,3,\"6\"])", IntArrays.equals(new int[] { 1, 2, 3, 6 }, new int[] { 1, 2, 3, 6 }));
assertFalse("equals([1,2,3,\"6\"],[5,2,3,\"6\"])", IntArrays.equals(new int[] { 1, 2, 3, 6 }, new int[] { 5, 2, 3, 6 }));
assertFalse("equals([1,2,3,\"6\"],[1,2,3,Integer.NaN])", IntArrays.equals(new int[] { 1, 2, 3, 6 }, new int[] { 5, 2, 3, 999999 }));
assertFalse("equals([1,2,3,\"6\"],[1,2,3,\"6\",10])", IntArrays.equals(new int[] { 1, 2, 3, 6 }, new int[] { 5, 2, 3, 6, 10 }));
}
public void testIndexOf() throws Exception {
assertEquals("indexOf(Integer.NaN,1,2,\"3\",Integer.NaN)", 3, IntArrays.indexOf(999999,1,2,3,999999));
assertEquals("indexOf(Integer.NaN,Integer.NaN,2,\"3\",4)", 0, IntArrays.indexOf(999999, 999999, 2, 3, 4));
assertEquals("indexOf(Integer.NaN,1,2,\"3\",4)", -1, IntArrays.indexOf(999999, 1, 2, 3, 4));
assertEquals("indexOf(1,1,2,\"3\",Integer.NaN)", 0, IntArrays.indexOf(1, 1, 2, 3, 999999));
assertEquals("indexOf(4,1,2,\"3\",Integer.NaN)", -1, IntArrays.indexOf(4, 1, 2, 3, 999999));
assertEquals("indexOf(4,1,2,\"3\",4)", 3, IntArrays.indexOf(4, 1, 2, 3, 4));
assertEquals("indexOf(\"3\",1,2,\"3\",4)", 2, IntArrays.indexOf(3, 1, 2, 3, 4));
}
public void testIndexOfArray() throws Exception {
assertEquals("indexOf([], 0, [1,2,3,6])", 0, IntArrays.indexOf(new int[]{}, 0, new int[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2], 0, [1,2,3,6])", 1, IntArrays.indexOf(new int[]{2}, 0, new int[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,3], 0, [1,2,3,6])", 1, IntArrays.indexOf(new int[]{2, 3}, 0, new int[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,3], 2, [1,2,3,6])", -1, IntArrays.indexOf(new int[]{2, 3}, 2, new int[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,6], 0, [1,2,3,6])", -1, IntArrays.indexOf(new int[]{2, 6}, 0, new int[]{ 1, 2, 3, 6 }));
}
public void testSortDec() throws Exception {
int[] ary = {0};
IntArrays.sortDec(ary);
assertArrayEquals("heapSort(0)", new int[] { 0 }, ary);
ary = new int[]{3,2,1,1,4,4,6,5,7,2};
IntArrays.sortDec(ary);
assertArrayEquals("heapSort(3,2,1,1,4,4,6,5,7,2)", reverse(new int[] { 1, 1, 2, 2, 3, 4, 4, 5, 6, 7 }), ary);
int N = 500; // Max number of objects that will fit in normal heap size: 16*500^2 = 4m
int[][] a = new int[N][];
int[][] a1 = new int[N][];
int[][] a2 = new int[N][];
Random rand = new Random();
int n = 0;
int c = 0;
for(int i=0; i<N; i++) {
int l = rand.nextInt(N);
int[] s = new int[l];
for(int j=0; j<l; j++) s[j]=rand.nextInt();
a[i] = s;
a1[i] = s.clone();
a2[i] = s.clone();
n += l;
}
System.out.println("Sorting "+N+" arrays of "+n+" elements");
long t0 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
c+=IntArrays.sortDec(a1[i]);
}
long t1 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
java.util.Arrays.sort(a2[i]);
reverse(a2[i]);
}
long t2 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
assertArrayEquals("sort("+IntArrays.join(",",a[i])+")",a2[i],a1[i]);
}
System.out.println("Sorted "+N+" arrays of "+n+" elements in "+(t1-t0)+"ms, "+c+" operations ("+(t2-t1)+"ms for java.util.IntArrays.sort)");
}
public void testSortInc() throws Exception {
int[] ary = {0};
IntArrays.sortInc(ary);
assertArrayEquals("heapSort(0)", new int[] { 0 }, ary);
ary = new int[]{3,2,1,1,4,4,6,5,7,2};
IntArrays.sortInc(ary);
assertArrayEquals("heapSort(3,2,1,1,4,4,6,5,7,2)", new int[] { 1, 1, 2, 2, 3, 4, 4, 5, 6, 7 }, ary);
int N = 500; // Max number of objects that will fit in normal heap size: 16*500^2 = 4m
int[][] a = new int[N][];
int[][] a1 = new int[N][];
int[][] a2 = new int[N][];
Random rand = new Random();
int n = 0;
int c = 0;
for(int i=0; i<N; i++) {
int l = rand.nextInt(N);
int[] s = new int[l];
for(int j=0; j<l; j++) s[j]=rand.nextInt();
a[i] = s;
a1[i] = s.clone();
a2[i] = s.clone();
n += l;
}
System.out.println("Sorting "+N+" arrays of "+n+" elements");
long t0 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
c+=IntArrays.sortInc(a1[i]);
}
long t1 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
java.util.Arrays.sort(a2[i]);
}
long t2 = System.currentTimeMillis();
for(int i=0; i<N; i++) {
assertArrayEquals("sort("+IntArrays.join(",",a[i])+")",a2[i],a1[i]);
}
System.out.println("Sorted "+N+" arrays of "+n+" elements in "+(t1-t0)+"ms, "+c+" operations ("+(t2-t1)+"ms for java.util.IntArrays.sort)");
}
public void testSearchDec() throws Exception {
int[] a1 = reverse(new int[] {});
assertEquals("",-1,IntArrays.searchDec(a1, 0, 0, 1));
int[] a2 = reverse(new int[] { 2});
assertEquals("",-2,IntArrays.searchDec(a2, 0, 1, 3));
int[] a3 = reverse(new int[] { 2});
assertEquals("",-1,IntArrays.searchDec(a3, 0, 1, 1));
assertEquals("",0,IntArrays.searchDec(a3, 0, 1, 2));
int[] a4 = reverse(new int[]{2, 3, 4, 7, 8});
assertEquals("",-6,IntArrays.searchDec(a4, 0, 5, 5));
assertEquals("",2,IntArrays.searchDec(a4, 0, 5, 4));
}
public void testSearchInc() throws Exception {
int[] a1 = new int[] {};
assertEquals("",-1,IntArrays.searchInc(a1, 0, 0, 1));
int[] a2 = new int[] { 2};
assertEquals("",-2,IntArrays.searchInc(a2, 0, 1, 3));
int[] a3 = new int[] { 2};
assertEquals("",-1,IntArrays.searchInc(a3, 0, 1, 1));
assertEquals("",0,IntArrays.searchInc(a3, 0, 1, 2));
int[] a4 = new int[]{2, 3, 4, 7, 8};
assertEquals("",-4,IntArrays.searchInc(a4, 0, 5, 5));
assertEquals("",2,IntArrays.searchInc(a4, 0, 5, 4));
}
// public void testInsert() throws Exception {
// int[] a1 = new int[] {Integer.NaN};
// assertEquals("",0,IntArrays.insert(a1,0,0,1));
// assertArrayEquals("",new int[]{1},a1);
// int[] a2 = new int[] { 2, Integer.NaN};
// assertEquals("",1,IntArrays.insert(a2,0,1,3));
// assertArrayEquals("",new int[]{2,3},a2);
// int[] a3 = new int[] { 2, Integer.NaN};
// assertEquals("",0,IntArrays.insert(a3,0,1,1));
// assertArrayEquals("",new int[]{1,2},a3);
// int[] a4 = new int[]{2, 3, 4, 7, 8, Integer.NaN};
// assertEquals("",3,IntArrays.insert(a4,0,5,5));
// assertArrayEquals("",new int[]{2, 3, 4, 5, 7, 8},a4);
// }
public void testUnionDec() throws Exception {
assertArrayEquals("",
reverse(new int[] { }),
IntArrays.unionDec(reverse(new int[] { }), 0, 0, reverse(new int[] { }), 0, 0));
assertArrayEquals("",
reverse(new int[]{2, 3, 4, 5, 6}),
IntArrays.unionDec(reverse(new int[] { }), 0, 0, reverse(new int[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new int[] { 1, 2, 3, 4, 5, 6, 7 }),
IntArrays.unionDec(reverse(new int[] { 1, 3, 7 }), 0, 3, reverse(new int[] { 2, 3, 4, 5, 6 }), 0, 5));
}
public void testUnionInc() throws Exception {
assertArrayEquals("",
new int[]{},
IntArrays.unionInc(new int[] { }, 0, 0, new int[] { }, 0, 0));
assertArrayEquals("",
new int[]{2, 3, 4, 5, 6},
IntArrays.unionInc(new int[] { }, 0, 0, new int[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6, 7},
IntArrays.unionInc(new int[] { 1, 3, 7 }, 0, 3, new int[] { 2, 3, 4, 5, 6 }, 0, 5));
}
public void testInterDec() throws Exception {
assertArrayEquals("",
reverse(new int[]{}),
IntArrays.interDec(reverse(new int[] { }), 0, 0, reverse(new int[] { }), 0, 0));
assertArrayEquals("",
reverse(new int[]{}),
IntArrays.interDec(reverse(new int[] { }), 0, 0, reverse(new int[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new int[]{3}),
IntArrays.interDec(reverse(new int[] { 1, 3, 7 }), 0, 3, reverse(new int[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new int[]{3, 6}),
IntArrays.interDec(reverse(new int[] { 1, 3, 6 }), 0, 3, reverse(new int[] { 2, 3, 4, 5, 6 }), 0, 5));
}
public void testInterInc() throws Exception {
assertArrayEquals("",
new int[]{},
IntArrays.interInc(new int[] { }, 0, 0, new int[] { }, 0, 0));
assertArrayEquals("",
new int[]{},
IntArrays.interInc(new int[] { }, 0, 0, new int[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new int[]{3},
IntArrays.interInc(new int[] { 1, 3, 7 }, 0, 3, new int[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new int[]{3, 6},
IntArrays.interInc(new int[] { 1, 3, 6 }, 0, 3, new int[] { 2, 3, 4, 5, 6 }, 0, 5));
}
public void testAppend() throws Exception {
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.append(new int[]{1, 2, 3}, 4, 5, 6));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.append(new int[]{}, 1, 2, 3, 4, 5, 6));
assertArrayEquals("",
new int[]{},
IntArrays.append(new int[]{}));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5},
IntArrays.append(new int[]{1, 2, 3}, 4, 5));
assertArrayEquals("",
new int[]{1, 2, 3},
IntArrays.append(new int[]{1, 2, 3}));
}
public void testPrepend() throws Exception {
assertArrayEquals("",
new int[]{4, 5, 6, 1, 2, 3},
IntArrays.prepend(new int[]{1, 2, 3}, 4, 5, 6));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.prepend(new int[]{}, 1, 2, 3, 4, 5, 6));
assertArrayEquals("",
new int[]{},
IntArrays.prepend(new int[]{}));
assertArrayEquals("",
new int[]{4, 5, 1, 2, 3},
IntArrays.prepend(new int[]{1, 2, 3}, 4, 5));
assertArrayEquals("",
new int[]{1, 2, 3},
IntArrays.prepend(new int[]{1, 2, 3}));
}
public void testConcat() throws Exception {
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.concat(new int[]{1, 2, 3}, new int[]{4, 5, 6}));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.concat(new int[]{}, new int[]{1, 2, 3, 4, 5, 6}));
assertArrayEquals("",
new int[]{},
IntArrays.concat(new int[]{}));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.concat(new int[]{1, 2, 3}, new int[]{4, 5}, new int[]{6}));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.concat(new int[]{1, 2, 3}, new int[]{}, new int[]{4, 5}, new int[]{6}));
assertArrayEquals("",
new int[]{1, 2, 3, 4, 5, 6},
IntArrays.concat(new int[]{}, new int[]{1, 2, 3}, new int[]{4, 5}, new int[]{6}));
}
public void testSubarray() throws Exception {
assertArrayEquals("subarray([],0,0)", new int[] { }, IntArrays.subarray(new int[]{}, 0, 0));
assertArrayEquals("subarray([1,2,3,4,5,6],0,0)", new int[] { }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 0, 0));
assertArrayEquals("subarray([1,2,3,4,5,6],6,6)", new int[] { }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 6, 6));
assertArrayEquals("subarray([1,2,3,4,5,6],1,4)", new int[] { 2, 3, 4 }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 1, 4));
assertArrayEquals("subarray([1,2,3,4,5,6],2,3)", new int[] { 3 }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 2, 3));
assertArrayEquals("subarray([1,2,3,4,5,6],0,6)", new int[] { 1, 2, 3, 4, 5, 6 }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 0, 6));
assertArrayEquals("subarray([1,2,3,4,5,6],1,1)", new int[] { }, IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 1, 1));
try {
IntArrays.subarray(new int[] { }, 0, 1);
fail("subarray([],0,1)");
} catch (ArrayIndexOutOfBoundsException e) {
}
try {
IntArrays.subarray(new int[] { }, 1, 0);
fail("subarray([],1,0)");
} catch (ArrayIndexOutOfBoundsException e) {
}
try {
IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 3, 7);
fail("subarray([1,2,3,4,5,6],3,7)");
} catch (ArrayIndexOutOfBoundsException e) {
}
assertArrayEquals("subarray(['1','2','3','4','5','6'],0,6)", new int[] { 1, 2, 3, 4, 5, 6 },
IntArrays.subarray(new int[] { 1, 2, 3, 4, 5, 6 }, 0, 6));
}
public void testAsList() throws Exception {
IntContainer list = IntArrays.container(1,2,3);
assertEquals("asList(...).size()", 3, list.size());
IntIterable.IntIterator it=list.iterator();
assertEquals("asList(...).iterator().next()", 1, it.nextValue());
assertEquals("asList(...).iterator().next().next()", 2, it.nextValue());
assertEquals("asList(...).iterator().next().next().next()", 3, it.nextValue());
assertFalse("asList(...).iterator().next().next().next().hasNext()", it.hasNext());
}
public void testStrgInt() throws Exception {
assertEquals("[0|]",IntArrays.toString(new int[]{}));
assertEquals("[1|0]",IntArrays.toString(new int[]{0}));
assertEquals("[1|1]",IntArrays.toString(new int[]{1}));
assertEquals("[1|247]",IntArrays.toString(new int[]{0xF7}));
assertEquals("[5|0,1,2,243,4]",IntArrays.toString(new int[]{0,1,2,0xF3,4}));
assertEquals("[5|0,1,2,243,4]",IntArrays.toString(new StringBuilder(),new int[]{0,1,2,0xF3,4}).toString());
assertEquals("[5|0,1,2,243,4]",IntArrays.toString(new StringBuffer(),new int[]{0,1,2,0xF3,4}).toString());
}
public void testJoinInt() throws Exception {
assertEquals("",IntArrays.join(":",new int[]{}));
assertEquals("0",IntArrays.join(":",new int[]{0}));
assertEquals("1",IntArrays.join(":",new int[]{1}));
assertEquals("247",IntArrays.join(":",new int[]{0xF7}));
assertEquals("0:1:2:243:4",IntArrays.join(":",new int[]{0,1,2,0xF3,4}));
assertEquals("0:1:2:243:4",IntArrays.join(new StringBuilder(),":",new int[]{0,1,2,0xF3,4}).toString());
assertEquals("0:1:2:243:4",IntArrays.join(new StringBuffer(),":",new int[]{0,1,2,0xF3,4}).toString());
assertEquals("0122434",IntArrays.join(null,new int[]{0,1,2,0xF3,4}));
assertEquals("0122434",IntArrays.join(new StringBuilder(),null,new int[]{0,1,2,0xF3,4}).toString());
assertEquals("0122434",IntArrays.join(new StringBuffer(),null,new int[]{0,1,2,0xF3,4}).toString());
}
}