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[JAVA]用Java实现的各种排序

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用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 aT_%G&.  
插入排序: ?;xL]~Q~1  
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package org.rut.util.algorithm.support; Mc@_[q!xY?  
6F8TiR&  
import org.rut.util.algorithm.SortUtil; vi; yT.  
/** _X]\#^UiO2  
* @author treeroot 6'[gd  
* @since 2006-2-2 ]VcuD05"C  
* @version 1.0 l&Cy K#B:\  
*/ F(DM$5z[  
public class InsertSort implements SortUtil.Sort{ ]]eI80u[  
|QHIB?C?`  
/* (non-Javadoc) Bag_0.H&m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Is[n7Q  
*/ me+u"G9I;  
public void sort(int[] data) { 8mM`v  
int temp; &WJ;s*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "~:P-]`G  
} uGU-MC *  
} >v'@p  
} j^)=<+Q;=  
*bl|[(pP  
} 6c[Slq!KA  
ZU68\cL  
冒泡排序: Q79WGW  
8JojKH  
package org.rut.util.algorithm.support; 9l<}`/@}W  
k!0vpps  
import org.rut.util.algorithm.SortUtil; E|"QYsi.Ck  
9 Eqv^0u  
/** <El!,UBq<  
* @author treeroot qE*hUzA  
* @since 2006-2-2 Txa 2`2t7  
* @version 1.0 AvZO R  
*/ %zYTTPLZ  
public class BubbleSort implements SortUtil.Sort{ xFA+Zj BC  
5h [<!f=  
/* (non-Javadoc) R q .2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f64}#E|w  
*/ 4K0Fc^-  
public void sort(int[] data) { ?W\KIp \Kn  
int temp; <~hx ~"c  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _+ERX[i  
if(data[j] SortUtil.swap(data,j,j-1); #}+_Hy  
} ?.g="{5X  
} *]>~lO1  
} :4x&B^,53  
} ow4|GLU^;  
MUi#3o\f  
} Ij?Qs{V  
d;g]OeF  
选择排序: S9E<)L  
p>1Klh:8.'  
package org.rut.util.algorithm.support; xMA2S*%ca  
*t bgIW+h  
import org.rut.util.algorithm.SortUtil; 7b*9 Th*a  
IN=l|Q$8f  
/** IXU~& 5&J  
* @author treeroot }+fBJ$  
* @since 2006-2-2 Q94p*]W"  
* @version 1.0 ow7*HN*  
*/ c8oE,-~  
public class SelectionSort implements SortUtil.Sort { +:3p*x%1H  
)VeeAu)p  
/* 5 J 7XVe>  
* (non-Javadoc) BYZllwxwTE  
* @N6KZn |R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nnuJY$O;M  
*/ |k<5yj4?  
public void sort(int[] data) { (AT)w/  
int temp; kPYQcOK8  
for (int i = 0; i < data.length; i++) { RY9Ur  
int lowIndex = i; <ahcE1h  
for (int j = data.length - 1; j > i; j--) { ZW ZKyJQ  
if (data[j] < data[lowIndex]) { ^)1!TewCY  
lowIndex = j; h{CMPJjD  
} 8nTdZu  
} ar:qCq$\  
SortUtil.swap(data,i,lowIndex); ksV ^Y=]  
} t]6 4=  
} lTJM}K  
U(\ ^!S1  
} l-q.VY2  
/ jN &VpDG  
Shell排序: zJTSg  
Dw&_6\F@  
package org.rut.util.algorithm.support; 3gz4c1 s^:  
}b / G{92  
import org.rut.util.algorithm.SortUtil; 5[A4K%EL  
bkL5srH  
/** p}lFV,V  
* @author treeroot \SA$:^zO  
* @since 2006-2-2 T;pe7"  
* @version 1.0 bX`VIFc  
*/ E|ZLz~  
public class ShellSort implements SortUtil.Sort{ %5/h;4   
p2j=73$  
/* (non-Javadoc) jEW@~e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qViolmDz  
*/ to3D#9Ep  
public void sort(int[] data) { KTjf2/  
for(int i=data.length/2;i>2;i/=2){ _;u@xl=  
for(int j=0;j insertSort(data,j,i); vL Qh r&I  
} R|K#nh  
} ''wF%q  
insertSort(data,0,1); g({dD;  
} *!u a?  
? q hme   
/** 8p.O rdp  
* @param data ek]CTUl*  
* @param j Zl7m:b2M  
* @param i /Avl&Rd  
*/ so }Kb3n  
private void insertSort(int[] data, int start, int inc) { c{cJ>d 0  
int temp; 6Ej@;]^^-  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); xyRZ v]K1  
} Z{ b($po  
} ?iaD;:'qE  
} S1W(]%0/  
-{a&Zkz>V  
} v`9n'+h-c6  
Hbi2amfBu  
快速排序: #AUa'qB t  
< c[dpK5c  
package org.rut.util.algorithm.support; M\jTeB"Z  
2Ls  
import org.rut.util.algorithm.SortUtil; \7A6+[ `fa  
roE*8:Y  
/** &HYs^|ydrr  
* @author treeroot i>L>3]SRr{  
* @since 2006-2-2 VD-2{em  
* @version 1.0 e X q}0-*f  
*/ kV3Zt@+  
public class QuickSort implements SortUtil.Sort{ /WE1afe_R  
l} UOg   
/* (non-Javadoc) 3bPF+(`J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $_NP4V8|z/  
*/ .+Fh,bNYK  
public void sort(int[] data) { mLL?n)   
quickSort(data,0,data.length-1); +)l6%QKcW  
} oN " /w~  
private void quickSort(int[] data,int i,int j){ tQrkRg(E:  
int pivotIndex=(i+j)/2; xbhU:,o  
file://swap Oa|'wh ug  
SortUtil.swap(data,pivotIndex,j);  QKtTy>5  
k-a3oLCR,  
int k=partition(data,i-1,j,data[j]); ,1&</R_  
SortUtil.swap(data,k,j); d}RR!i`<N  
if((k-i)>1) quickSort(data,i,k-1); 4]3(Vyh`  
if((j-k)>1) quickSort(data,k+1,j); 0s8w)%4$  
ZdY)&LJ  
} l-RwCw4f  
/** "1Oe bo2  
* @param data #OVf2  "  
* @param i ::A]p@  
* @param j l:H}Y3_I  
* @return Ff @Cs0R  
*/ and)>$)|  
private int partition(int[] data, int l, int r,int pivot) { L.) 0!1  
do{ BV01&.<|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); QL_9a,R'r  
SortUtil.swap(data,l,r); ',P E25Z  
} &?gvW//L2  
while(l SortUtil.swap(data,l,r); 7;;HP`vY  
return l; d y^zOqc  
} 27-GfC=7*  
JM-+p  
} Yx{qVU  
Kt3 ]r:&J  
改进后的快速排序: 9k[>(LC  
wc#E:GJcK  
package org.rut.util.algorithm.support; X,"(G}KUA  
mIX[HDy:V$  
import org.rut.util.algorithm.SortUtil; Xv'5%o^i*  
8e3I@mv  
/** -r!sY+Z>  
* @author treeroot 8Cw+<A*  
* @since 2006-2-2 U%nLo[k  
* @version 1.0 u+Q<> >lU  
*/ 6@[7  
public class ImprovedQuickSort implements SortUtil.Sort { b qNM  
;5 JzrbtL  
private static int MAX_STACK_SIZE=4096; 7r4|>F  
private static int THRESHOLD=10;  YXr"  
/* (non-Javadoc) ht 1d[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nD51,1>  
*/ UfWn\*J&k  
public void sort(int[] data) { O>H'o k  
int[] stack=new int[MAX_STACK_SIZE]; yMoV|U6  
P 4|p[V8  
int top=-1; OW|5IEC  
int pivot; 3EN(Pz L  
int pivotIndex,l,r; chF@',9t  
gLL8-T[9  
stack[++top]=0; M'D l_dx-  
stack[++top]=data.length-1; J@vL,C)E6  
k6?;D_dm  
while(top>0){ [R~`6  
int j=stack[top--]; M#7w54~b?M  
int i=stack[top--]; m<X[s  
$|V@3`0  
pivotIndex=(i+j)/2; ?\.aq p1B  
pivot=data[pivotIndex]; /:OSql5K*<  
}[>X}"_e  
SortUtil.swap(data,pivotIndex,j); U$,W/G}m  
/$ :w8  
file://partition )Z0bMO<  
l=i-1; yxx'g+D*  
r=j; GF=rGn@,)`  
do{ <_N<L\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tr t^o  
SortUtil.swap(data,l,r); e 1$<,.>  
} _sGmkJi]  
while(l SortUtil.swap(data,l,r); W1T% Q88  
SortUtil.swap(data,l,j); e(~9JP9  
7(S66  
if((l-i)>THRESHOLD){ :K)7_]y  
stack[++top]=i; #oX8EMqs<  
stack[++top]=l-1; XDdF7i}  
} `, lry7]  
if((j-l)>THRESHOLD){ 74p=uQ  
stack[++top]=l+1; 5SNa~ kC&  
stack[++top]=j; bk}'wcX<+]  
} p9`!.~[  
{%b*4x0?  
} !\ 6<kQg#  
file://new InsertSort().sort(data); f"}g5eg+  
insertSort(data); ac%6eW0#  
} 7B)m/%>3s  
/** 1z5Oi u  
* @param data ;#Y'SK  
*/ qLYz-P'ik  
private void insertSort(int[] data) { dz>2/'  
int temp; D,l&^diz  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QK`5KB(k'  
} nR(v~_y[V  
} EIrAq!CA  
} ~Bi>T15e  
L HW\A8  
} Qu;cl/&  
'OTQiI^t=  
归并排序: * ",/7(  
fR$_=WWN>h  
package org.rut.util.algorithm.support; :yi?<  
9-3, DxZ}  
import org.rut.util.algorithm.SortUtil; . \t8s0A  
rn9n_)  
/** Oe~x,=X)  
* @author treeroot 9>6DA^  
* @since 2006-2-2 rV_i|  
* @version 1.0 @$aGVEcU$  
*/ / :z<+SCh  
public class MergeSort implements SortUtil.Sort{ x=M%QFe  
sW^e D;  
/* (non-Javadoc) /f}!G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q_r}cL/A  
*/ H _0F:e  
public void sort(int[] data) { VchI0KL?  
int[] temp=new int[data.length]; d2a*xDkv  
mergeSort(data,temp,0,data.length-1); YLsOA`5X  
} ]T:a&DHC  
/Bw <?:  
private void mergeSort(int[] data,int[] temp,int l,int r){ [. Db56  
int mid=(l+r)/2; DEw>f%&4  
if(l==r) return ; C==yl"w  
mergeSort(data,temp,l,mid); 4^Y{ BS fF  
mergeSort(data,temp,mid+1,r); MO>9A,&f  
for(int i=l;i<=r;i++){ OAauD$Hh  
temp=data; g2;lEW  
} fg)VO6Wo&  
int i1=l; DYDeb i6  
int i2=mid+1; C<Z{G%Qm  
for(int cur=l;cur<=r;cur++){ 4`GOBX1b.y  
if(i1==mid+1) bEKhU\@=J  
data[cur]=temp[i2++]; .0Kc|b=w  
else if(i2>r) lQM&q  
data[cur]=temp[i1++]; {sfA$ d0  
else if(temp[i1] data[cur]=temp[i1++]; 6Hp+?mmh  
else l+a1`O  
data[cur]=temp[i2++]; (Z0_e&=*  
} ^6On^k[|fw  
} O joa3  
GEK7q<  
} f DwK5?  
d9&   
改进后的归并排序: Mbp7%^E"A  
E<l/o5<nC  
package org.rut.util.algorithm.support; %s! |,Cu  
6_s(Kx>j  
import org.rut.util.algorithm.SortUtil; |M&4[ka}  
3K=%I+G(4  
/** p0[+Zm{#l  
* @author treeroot K9{RU4<  
* @since 2006-2-2 oY4^CGk=  
* @version 1.0 yeI> b 1>Q  
*/ >UQY3C  
public class ImprovedMergeSort implements SortUtil.Sort { 5a-x$Qb9  
4[(NxXH8M  
private static final int THRESHOLD = 10; I>GBnx L  
i!x>)E  
/* en'"" w  
* (non-Javadoc) wRvh/{xB  
* =EYWiK77a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z2>LjM) #  
*/ [l3ys  
public void sort(int[] data) { $nb.[si\  
int[] temp=new int[data.length]; 6w=`0r3hy  
mergeSort(data,temp,0,data.length-1); n y cn  
} XEnu0 gr  
1ysQvz  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?-zuy US  
int i, j, k; &+n9T?+b  
int mid = (l + r) / 2; En:>c  
if (l == r) 6`@b@Kd  
return; F"bz<{  
if ((mid - l) >= THRESHOLD) ;=7K*npT  
mergeSort(data, temp, l, mid); O%3Hp.|!  
else u&w})`+u5  
insertSort(data, l, mid - l + 1); lm6hFvEZ  
if ((r - mid) > THRESHOLD) &JXb) W  
mergeSort(data, temp, mid + 1, r); ME$J42  
else i y8Jl  
insertSort(data, mid + 1, r - mid); ?=ffv]v|  
 vTgx7gP  
for (i = l; i <= mid; i++) { {#:31)P  
temp = data; M.K^W`  
} XC5/$3'M&  
for (j = 1; j <= r - mid; j++) { AN:yL a!  
temp[r - j + 1] = data[j + mid]; J\Hv42  
} *i}X(sfe  
int a = temp[l]; .L+XV y  
int b = temp[r]; wk ^7/B  
for (i = l, j = r, k = l; k <= r; k++) { {fnx=BaG  
if (a < b) { W|D kq  
data[k] = temp[i++]; > 1(J  
a = temp; hJ$9Hb  
} else { M+0PEf.  
data[k] = temp[j--]; \n t~K}a  
b = temp[j]; )q[P&f(h  
} {9yf0n  
} BY.k.]/  
} V ^+p:nP  
J*[@M*R;&  
/** 4Wp5[(bg  
* @param data 'L7qf'RV  
* @param l SIV !8mz  
* @param i h~m,0nGO  
*/ .07`nIs"  
private void insertSort(int[] data, int start, int len) { +i!5<nn  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wS);KLe3  
} CVW T >M<  
} +rJ6DZ  
} ."H;bfcL_  
} bx(@ fl:m  
8[KKi~A  
堆排序: 8f/KNh7#s  
4SZ,X^]I>  
package org.rut.util.algorithm.support; {u/1ph-  
8 ECX[fw  
import org.rut.util.algorithm.SortUtil; X3\PVsH$K  
!+Xul_XG  
/** W;'fAohr  
* @author treeroot E?G'F3i  
* @since 2006-2-2 J7* o%W*V  
* @version 1.0 X58U>4a  
*/ 4%^z=%  
public class HeapSort implements SortUtil.Sort{ {_Wrs.a'8  
0k5-S~_\  
/* (non-Javadoc) _"ciHYHBQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %+H_V1F  
*/ !1G KpL  
public void sort(int[] data) { W!wof- 1  
MaxHeap h=new MaxHeap(); J(l\VvK  
h.init(data); PqV F}  
for(int i=0;i h.remove(); 8u2k-_9  
System.arraycopy(h.queue,1,data,0,data.length); hhze5_$_  
} $Lr& V~  
.`}TND~  
private static class MaxHeap{ 3uocAmY  
z.Ic?Wz7  
void init(int[] data){ bGCC?}\  
this.queue=new int[data.length+1]; ==OUd6e}  
for(int i=0;i queue[++size]=data; /)6T>/  
fixUp(size); &t[[4+Qt  
} `9co7[Z  
} WM'!|lg  
d ItfR'$  
private int size=0; orFwy!  
&KjMw:l  
private int[] queue; } Bf@69  
4<i#TCGex3  
public int get() { . vb##D  
return queue[1]; -N*[f9EJB  
} $6a9<&LP_  
Z*m^K%qJ  
public void remove() { YGJ!!(~r  
SortUtil.swap(queue,1,size--); Vr EGR$  
fixDown(1); ENuL!H>;*  
} =&z+7Pe[  
file://fixdown 2y - QH  
private void fixDown(int k) { ryL1<u ~  
int j; l8FJ\5'M  
while ((j = k << 1) <= size) { E`o_R=%  
if (j < size %26amp;%26amp; queue[j] j++; /_0B5 ,6R  
if (queue[k]>queue[j]) file://不用交换 iT}>a30]B  
break; w7Yu} JY^  
SortUtil.swap(queue,j,k); ^%$IdDx  
k = j; EB}B75)x  
} a;xeHbE  
} E7L>5z  
private void fixUp(int k) { :1A:g^n  
while (k > 1) { W3,r@mi^s7  
int j = k >> 1; Ddr.6`VJ  
if (queue[j]>queue[k]) gADf9x"b  
break; x4I!f)8Q  
SortUtil.swap(queue,j,k); /o9it;  
k = j; NV * 2  
} kG /1  
} <=NnrZOF  
_d]{[& p4t  
} .o/|]d`%  
FOQ-KP\ =,  
} 5-X$"Z|@  
}|Qh+{H*.  
SortUtil: 46=E- Tq  
rWTaCU^qV  
package org.rut.util.algorithm; \p(S4?I7  
m^QoB  
import org.rut.util.algorithm.support.BubbleSort; _<(xjWp 8  
import org.rut.util.algorithm.support.HeapSort; 2nyK'k  
import org.rut.util.algorithm.support.ImprovedMergeSort; G<?RH"RZr  
import org.rut.util.algorithm.support.ImprovedQuickSort; 6CyByj&  
import org.rut.util.algorithm.support.InsertSort; 3N_KNW  
import org.rut.util.algorithm.support.MergeSort; ';3>rv_  
import org.rut.util.algorithm.support.QuickSort; /(^-= pAX  
import org.rut.util.algorithm.support.SelectionSort; 4;6"I2;zfG  
import org.rut.util.algorithm.support.ShellSort; i{fw?))+  
h>`[p,o  
/** H1k)ya x4_  
* @author treeroot RnkV)ed(  
* @since 2006-2-2 zIF1A*UH  
* @version 1.0 %@PcQJg U<  
*/ N/o?\q8  
public class SortUtil { dHY@V> D'-  
public final static int INSERT = 1; PA^*|^;Xh  
public final static int BUBBLE = 2; > SZ95@Oh  
public final static int SELECTION = 3; ;5/Se"Nd  
public final static int SHELL = 4; nGVr\u9z  
public final static int QUICK = 5; 7KlL%\  
public final static int IMPROVED_QUICK = 6; 8'Q+%{?1t  
public final static int MERGE = 7; XZOBK^,5^B  
public final static int IMPROVED_MERGE = 8; =78y* `L  
public final static int HEAP = 9; .4a|^ vT  
jA,y.(mR  
public static void sort(int[] data) { m~+.vk  
sort(data, IMPROVED_QUICK); r ~{nlLO}  
} "q?(rx;  
private static String[] name={ 5$U49j  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0aY|:  
}; oO tjG3B({  
&E]) sJ0  
private static Sort[] impl=new Sort[]{ ;-1KPDIp`  
new InsertSort(), dzIBdth  
new BubbleSort(), < dE7+w  
new SelectionSort(),  c k;:84  
new ShellSort(), (Iv@SiZf(  
new QuickSort(), ~aotV1"D  
new ImprovedQuickSort(), #X)DFAtb  
new MergeSort(), 9BakxmAc  
new ImprovedMergeSort(), &3iI\s[  
new HeapSort() W>' DQB  
}; XI Mh<  
570ja7C:  
public static String toString(int algorithm){ 1Lf -  
return name[algorithm-1]; y;ey(  
} .Yk}iHcW.  
4M"'B A<  
public static void sort(int[] data, int algorithm) { H2],auBY  
impl[algorithm-1].sort(data); glch06  
} bD v& ;Z  
I]HYqI  
public static interface Sort { Oyb9 ql^  
public void sort(int[] data); /[Nkk)8-  
} #`@)lU+/  
yHY2 SXm  
public static void swap(int[] data, int i, int j) { =4)8a"7#.  
int temp = data; /*g0M2+OZo  
data = data[j]; rv{Wti[  
data[j] = temp; &v]xYb)+<  
} {v!w2p@  
} @[D5{v)S  
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