package net.varkhan.base.containers.array;
import junit.framework.TestCase;
import java.util.Random;
/**
* <b></b>.
* <p/>
*
* @author varkhan
* @date 3/24/12
* @time 9:39 PM
*/
public class ShortArraysTest extends TestCase {
public static void assertArrayEquals(String message, short[] expected, short[] 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: ["+ShortArrays.join(",", expected)+"];\n actual: ["+ShortArrays.join(",", actual)+"]");
}
public static short[] reverse(short[] a) {
for(int i1=0, i2=a.length-1; i1<i2; i1++, i2--) {
short t = a[i2];
a[i2] = a[i1];
a[i1] = t;
}
return a;
}
public void testEquals() throws Exception {
assertTrue("equals([],[])", ShortArrays.equals(new short[] { }, new short[] { }));
assertTrue("equals([1,2,3,\"6\"],[1,2,3,\"6\"])", ShortArrays.equals(new short[] { 1, 2, 3, 6 }, new short[] { 1, 2, 3, 6 }));
assertFalse("equals([1,2,3,\"6\"],[5,2,3,\"6\"])", ShortArrays.equals(new short[] { 1, 2, 3, 6 }, new short[] { 5, 2, 3, 6 }));
assertFalse("equals([1,2,3,\"6\"],[1,2,3,256])", ShortArrays.equals(new short[] { 1, 2, 3, 6 }, new short[] { 5, 2, 3, 256 }));
assertFalse("equals([1,2,3,\"6\"],[1,2,3,\"6\",10])", ShortArrays.equals(new short[] { 1, 2, 3, 6 }, new short[] { 5, 2, 3, 6, 10 }));
}
public void testIndexOf() throws Exception {
assertEquals("indexOf(Short.NaN,1,2,\"3\",Short.NaN)", 3, ShortArrays.indexOf((short)256,(short)1,(short)2,(short)3,(short)256));
assertEquals("indexOf(Short.NaN,Short.NaN,2,\"3\",4)", 0, ShortArrays.indexOf((short)256, (short)256, (short)2, (short)3, (short)4));
assertEquals("indexOf(Short.NaN,1,2,\"3\",4)", -1, ShortArrays.indexOf((short)256, (short)1, (short)2, (short)3, (short)4));
assertEquals("indexOf(1,1,2,\"3\",Short.NaN)", 0, ShortArrays.indexOf((short)1, (short)1, (short)2, (short)3, (short)256));
assertEquals("indexOf(4,1,2,\"3\",Short.NaN)", -1, ShortArrays.indexOf((short)4, (short)1, (short)2, (short)3, (short)256));
assertEquals("indexOf(4,1,2,\"3\",4)", 3, ShortArrays.indexOf((short)4, (short)1, (short)2, (short)3, (short)4));
assertEquals("indexOf(\"3\",1,2,\"3\",4)", 2, ShortArrays.indexOf((short)3, (short)1, (short)2, (short)3, (short)4));
}
public void testIndexOfArray() throws Exception {
assertEquals("indexOf([], 0, [1,2,3,6])", 0, ShortArrays.indexOf(new short[]{}, 0, new short[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2], 0, [1,2,3,6])", 1, ShortArrays.indexOf(new short[]{2}, 0, new short[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,3], 0, [1,2,3,6])", 1, ShortArrays.indexOf(new short[]{2, 3}, 0, new short[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,3], 2, [1,2,3,6])", -1, ShortArrays.indexOf(new short[]{2, 3}, 2, new short[]{ 1, 2, 3, 6 }));
assertEquals("indexOf([2,6], 0, [1,2,3,6])", -1, ShortArrays.indexOf(new short[]{2, 6}, 0, new short[]{ 1, 2, 3, 6 }));
}
public void testSortDec() throws Exception {
short[] ary = {0};
ShortArrays.sortDec(ary);
assertArrayEquals("heapSort(0)", new short[] { 0 }, ary);
ary = new short[]{3,2,1,1,4,4,6,5,7,2};
ShortArrays.sortDec(ary);
assertArrayEquals("heapSort(3,2,1,1,4,4,6,5,7,2)", reverse(new short[] { 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
short[][] a = new short[N][];
short[][] a1 = new short[N][];
short[][] a2 = new short[N][];
Random rand = new Random();
int n = 0;
int c = 0;
for(int i=0; i<N; i++) {
int l = rand.nextInt(N);
short[] s = new short[l];
for(int j=0; j<l; j++) s[j]=(short)rand.nextInt(1<<15);
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+=ShortArrays.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("+ShortArrays.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.ShortArrays.sort)");
}
public void testSortInc() throws Exception {
short[] ary = {0};
ShortArrays.sortInc(ary);
assertArrayEquals("heapSort(0)", new short[] { 0 }, ary);
ary = new short[]{3,2,1,1,4,4,6,5,7,2};
ShortArrays.sortInc(ary);
assertArrayEquals("heapSort(3,2,1,1,4,4,6,5,7,2)", new short[] { 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
short[][] a = new short[N][];
short[][] a1 = new short[N][];
short[][] a2 = new short[N][];
Random rand = new Random();
int n = 0;
int c = 0;
for(int i=0; i<N; i++) {
int l = rand.nextInt(N);
short[] s = new short[l];
for(int j=0; j<l; j++) s[j]=(short)rand.nextInt(1<<15);
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+=ShortArrays.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("+ShortArrays.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.ShortArrays.sort)");
}
public void testSearchDec() throws Exception {
short[] a1 = reverse(new short[] {});
assertEquals("",-1,ShortArrays.searchDec(a1, 0, 0, (short)1));
short[] a2 = reverse(new short[] { 2});
assertEquals("",-2,ShortArrays.searchDec(a2, 0, 1, (short)3));
short[] a3 = reverse(new short[] { 2});
assertEquals("",-1,ShortArrays.searchDec(a3, 0, 1, (short)1));
assertEquals("",0,ShortArrays.searchDec(a3, 0, 1, (short)2));
short[] a4 = reverse(new short[]{2, 3, 4, 7, 8});
assertEquals("",-6,ShortArrays.searchDec(a4, 0, 5, (short)5));
assertEquals("",2,ShortArrays.searchDec(a4, 0, 5, (short)4));
}
public void testSearchInc() throws Exception {
short[] a1 = new short[] {};
assertEquals("",-1,ShortArrays.searchInc(a1, 0, 0, (short)1));
short[] a2 = new short[] { 2};
assertEquals("",-2,ShortArrays.searchInc(a2, 0, 1, (short)3));
short[] a3 = new short[] { 2};
assertEquals("",-1,ShortArrays.searchInc(a3, 0, 1, (short)1));
assertEquals("",0,ShortArrays.searchInc(a3, 0, 1, (short)2));
short[] a4 = new short[]{2, 3, 4, 7, 8};
assertEquals("",-4,ShortArrays.searchInc(a4, 0, 5, (short)5));
assertEquals("",2,ShortArrays.searchInc(a4, 0, 5, (short)4));
}
// public void testInsert() throws Exception {
// short[] a1 = new short[] {Short.NaN};
// assertEquals("",0,ShortArrays.insert(a1,0,0,1));
// assertArrayEquals("",new short[]{1},a1);
// short[] a2 = new short[] { 2, Short.NaN};
// assertEquals("",1,ShortArrays.insert(a2,0,1,3));
// assertArrayEquals("",new short[]{2,3},a2);
// short[] a3 = new short[] { 2, Short.NaN};
// assertEquals("",0,ShortArrays.insert(a3,0,1,1));
// assertArrayEquals("",new short[]{1,2},a3);
// short[] a4 = new short[]{2, 3, 4, 7, 8, Short.NaN};
// assertEquals("",3,ShortArrays.insert(a4,0,5,5));
// assertArrayEquals("",new short[]{2, 3, 4, 5, 7, 8},a4);
// }
public void testUnionDec() throws Exception {
assertArrayEquals("",
reverse(new short[] { }),
ShortArrays.unionDec(reverse(new short[] { }), 0, 0, reverse(new short[] { }), 0, 0));
assertArrayEquals("",
reverse(new short[]{2, 3, 4, 5, 6}),
ShortArrays.unionDec(reverse(new short[] { }), 0, 0, reverse(new short[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new short[] { 1, 2, 3, 4, 5, 6, 7 }),
ShortArrays.unionDec(reverse(new short[] { 1, 3, 7 }), 0, 3, reverse(new short[] { 2, 3, 4, 5, 6 }), 0, 5));
}
public void testUnionInc() throws Exception {
assertArrayEquals("",
new short[]{},
ShortArrays.unionInc(new short[] { }, 0, 0, new short[] { }, 0, 0));
assertArrayEquals("",
new short[]{2, 3, 4, 5, 6},
ShortArrays.unionInc(new short[] { }, 0, 0, new short[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6, 7},
ShortArrays.unionInc(new short[] { 1, 3, 7 }, 0, 3, new short[] { 2, 3, 4, 5, 6 }, 0, 5));
}
public void testInterDec() throws Exception {
assertArrayEquals("",
reverse(new short[]{}),
ShortArrays.interDec(reverse(new short[] { }), 0, 0, reverse(new short[] { }), 0, 0));
assertArrayEquals("",
reverse(new short[]{}),
ShortArrays.interDec(reverse(new short[] { }), 0, 0, reverse(new short[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new short[]{3}),
ShortArrays.interDec(reverse(new short[] { 1, 3, 7 }), 0, 3, reverse(new short[] { 2, 3, 4, 5, 6 }), 0, 5));
assertArrayEquals("",
reverse(new short[]{3, 6}),
ShortArrays.interDec(reverse(new short[] { 1, 3, 6 }), 0, 3, reverse(new short[] { 2, 3, 4, 5, 6 }), 0, 5));
}
public void testInterInc() throws Exception {
assertArrayEquals("",
new short[]{},
ShortArrays.interInc(new short[] { }, 0, 0, new short[] { }, 0, 0));
assertArrayEquals("",
new short[]{},
ShortArrays.interInc(new short[] { }, 0, 0, new short[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new short[]{3},
ShortArrays.interInc(new short[] { 1, 3, 7 }, 0, 3, new short[] { 2, 3, 4, 5, 6 }, 0, 5));
assertArrayEquals("",
new short[]{3, 6},
ShortArrays.interInc(new short[] { 1, 3, 6 }, 0, 3, new short[] { 2, 3, 4, 5, 6 }, 0, 5));
}
public void testAppend() throws Exception {
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.append(new short[]{1, 2, 3}, (short)4, (short)5, (short)6));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.append(new short[]{}, (short)1, (short)2, (short)3, (short)4, (short)5, (short)6));
assertArrayEquals("",
new short[]{},
ShortArrays.append(new short[]{}));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5},
ShortArrays.append(new short[]{1, 2, 3}, (short)4, (short)5));
assertArrayEquals("",
new short[]{1, 2, 3},
ShortArrays.append(new short[]{1, 2, 3}));
}
public void testPrepend() throws Exception {
assertArrayEquals("",
new short[]{4, 5, 6, 1, 2, 3},
ShortArrays.prepend(new short[]{1, 2, 3}, (short)4, (short)5, (short)6));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.prepend(new short[]{}, (short)1, (short)2, (short)3, (short)4, (short)5, (short)6));
assertArrayEquals("",
new short[]{},
ShortArrays.prepend(new short[]{}));
assertArrayEquals("",
new short[]{4, 5, 1, 2, 3},
ShortArrays.prepend(new short[]{1, 2, 3}, (short)4, (short)5));
assertArrayEquals("",
new short[]{1, 2, 3},
ShortArrays.prepend(new short[]{1, 2, 3}));
}
public void testConcat() throws Exception {
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.concat(new short[]{1, 2, 3}, new short[]{4, 5, 6}));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.concat(new short[]{}, new short[]{1, 2, 3, 4, 5, 6}));
assertArrayEquals("",
new short[]{},
ShortArrays.concat(new short[]{}));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.concat(new short[]{1, 2, 3}, new short[]{4, 5}, new short[]{6}));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.concat(new short[]{1, 2, 3}, new short[]{}, new short[]{4, 5}, new short[]{6}));
assertArrayEquals("",
new short[]{1, 2, 3, 4, 5, 6},
ShortArrays.concat(new short[]{}, new short[]{1, 2, 3}, new short[]{4, 5}, new short[]{6}));
}
public void testSubarray() throws Exception {
assertArrayEquals("subarray([],0,0)", new short[] { }, ShortArrays.subarray(new short[]{}, 0, 0));
assertArrayEquals("subarray([1,2,3,4,5,6],0,0)", new short[] { }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 0, 0));
assertArrayEquals("subarray([1,2,3,4,5,6],6,6)", new short[] { }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 6, 6));
assertArrayEquals("subarray([1,2,3,4,5,6],1,4)", new short[] { 2, 3, 4 }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 1, 4));
assertArrayEquals("subarray([1,2,3,4,5,6],2,3)", new short[] { 3 }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 2, 3));
assertArrayEquals("subarray([1,2,3,4,5,6],0,6)", new short[] { 1, 2, 3, 4, 5, 6 }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 0, 6));
assertArrayEquals("subarray([1,2,3,4,5,6],1,1)", new short[] { }, ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 1, 1));
try {
ShortArrays.subarray(new short[] { }, 0, 1);
fail("subarray([],0,1)");
} catch (ArrayIndexOutOfBoundsException e) {
}
try {
ShortArrays.subarray(new short[] { }, 1, 0);
fail("subarray([],1,0)");
} catch (ArrayIndexOutOfBoundsException e) {
}
try {
ShortArrays.subarray(new short[] { 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 short[] { 1, 2, 3, 4, 5, 6 },
ShortArrays.subarray(new short[] { 1, 2, 3, 4, 5, 6 }, 0, 6));
}
public void testStrgShort() throws Exception {
assertEquals("[0|]",ShortArrays.toString(new short[]{}));
assertEquals("[1|0]",ShortArrays.toString(new short[]{0}));
assertEquals("[1|1]",ShortArrays.toString(new short[]{1}));
assertEquals("[1|247]",ShortArrays.toString(new short[]{(short)0xF7}));
assertEquals("[5|0,1,2,243,4]",ShortArrays.toString(new short[]{0,1,2,(short)0xF3,4}));
assertEquals("[5|0,1,2,243,4]",ShortArrays.toString(new StringBuilder(),new short[]{0,1,2,(short)0xF3,4}).toString());
assertEquals("[5|0,1,2,243,4]",ShortArrays.toString(new StringBuffer(),new short[]{0,1,2,(short)0xF3,4}).toString());
}
public void testJoinShort() throws Exception {
assertEquals("",ShortArrays.join(":",new short[]{}));
assertEquals("0",ShortArrays.join(":",new short[]{0}));
assertEquals("1",ShortArrays.join(":",new short[]{1}));
assertEquals("247",ShortArrays.join(":",new short[]{(short)0xF7}));
assertEquals("0:1:2:243:4",ShortArrays.join(":",new short[]{0,1,2,(short)0xF3,4}));
assertEquals("0:1:2:243:4",ShortArrays.join(new StringBuilder(),":",new short[]{0,1,2,(short)0xF3,4}).toString());
assertEquals("0:1:2:243:4",ShortArrays.join(new StringBuffer(),":",new short[]{0,1,2,(short)0xF3,4}).toString());
assertEquals("0122434",ShortArrays.join(null,new short[]{0,1,2,(short)0xF3,4}));
assertEquals("0122434",ShortArrays.join(new StringBuilder(),null,new short[]{0,1,2,(short)0xF3,4}).toString());
assertEquals("0122434",ShortArrays.join(new StringBuffer(),null,new short[]{0,1,2,(short)0xF3,4}).toString());
}
}