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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。 5ws|4V  
插入排序: sf )ojq6s  
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package org.rut.util.algorithm.support; m8'B7|s  
I{Hl2?CnI,  
import org.rut.util.algorithm.SortUtil; y3l3XLI*b  
/** eFDhJ  
* @author treeroot ?O(KmDH  
* @since 2006-2-2 4|*b{Ni  
* @version 1.0 t I}@1  
*/ Ah:!  
public class InsertSort implements SortUtil.Sort{ 8:^`rw4a0  
zy\p,  
/* (non-Javadoc) YoiM\gw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V#8]io  
*/ "8MG[$Y  
public void sort(int[] data) { ^2Sa_.  
int temp; qj *IKS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <tkxE!xF`J  
} N!Dc\d=8q]  
} BzBij^h  
} %\6ns  
P'f0KZL;  
} ~XAtt\WS  
F7$x5h@  
冒泡排序: cpz'upVOZ  
:Awnj!KNCc  
package org.rut.util.algorithm.support; Vj?{T(K1[  
M`IiK+IoU  
import org.rut.util.algorithm.SortUtil; Trd/\tX#v&  
ngF5ywIG  
/** RDU,yTHq  
* @author treeroot O%?TxzX;  
* @since 2006-2-2 .Rt_j  
* @version 1.0 Kq!E<|yM  
*/ vlYDhjZk#  
public class BubbleSort implements SortUtil.Sort{ <SM{yMz  
6J. [9#  
/* (non-Javadoc) `H+~LVH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _22;hnG<iy  
*/ me]O  
public void sort(int[] data) { Z-(#}(HD  
int temp; ,Q|[Yr  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ]~S,K}T  
if(data[j] SortUtil.swap(data,j,j-1); }p-<+sFo  
} mXZOkx{  
} @Dc?fyY*o<  
} \2cbZQx  
} jP'.a. ^o$  
wI'8B{[  
} yNp l0 d  
3/a$oO  
选择排序: Co6ghH7T  
weQC9e~d{-  
package org.rut.util.algorithm.support; I)$`@.  
e='bc7$  
import org.rut.util.algorithm.SortUtil; lK;/97Ze  
BLx tS  
/** gQy {OU  
* @author treeroot x`N _tWZ  
* @since 2006-2-2 jR~2mf!h*e  
* @version 1.0 S"?py=7  
*/ p x;X}Cd  
public class SelectionSort implements SortUtil.Sort { A:Y]<jt  
\+OP!`  
/* \m @8$MK  
* (non-Javadoc) O8BxXa@5  
* :x e/7-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) & sbA:xZBA  
*/ (lv|-Phc.  
public void sort(int[] data) { RFF&-M]  
int temp; `P;fD/I  
for (int i = 0; i < data.length; i++) { n]&/?6}  
int lowIndex = i; ow:}NI  
for (int j = data.length - 1; j > i; j--) { {XYv &K  
if (data[j] < data[lowIndex]) { R_4]6{Rm  
lowIndex = j; kIS&! V  
} S0.   
} 4ujw/`:/m  
SortUtil.swap(data,i,lowIndex); hDc, #~!  
} S-^y;#=  
} q^}QwJw  
|RT#ZMJek  
} 0:-i  
)W^Wqa8mG|  
Shell排序: ,aI 6P-  
#;. tVo I  
package org.rut.util.algorithm.support; uS :3Yo  
G'c!82;,?  
import org.rut.util.algorithm.SortUtil; ]p3hq1u3&  
U85t !U  
/** NJ8QI(^"  
* @author treeroot >T3HkOT  
* @since 2006-2-2 zRyZrt,%&  
* @version 1.0 yC. ve;lG  
*/ 4xLU15C  
public class ShellSort implements SortUtil.Sort{ 3\eb:-B:@  
iN%\wkx*N  
/* (non-Javadoc) x#yL&+'?Mj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]9z{ 95  
*/ ;c73:'e  
public void sort(int[] data) { f:L%th  
for(int i=data.length/2;i>2;i/=2){ uiq)?XUKv  
for(int j=0;j insertSort(data,j,i); ,6rg00wGE  
} kM>0>fkjE  
} I^ W  
insertSort(data,0,1); @D K,ka(  
} [.tqgU  
b{H&%Jx)  
/** 6L@g]f|Y@  
* @param data =!3G,qV  
* @param j GCul6,w  
* @param i Q7]:vs)%  
*/ |YjuaXd7N  
private void insertSort(int[] data, int start, int inc) { RW 23lRA6  
int temp; $x;wnXXXM  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cad1eOT'  
} 8EZ"z d`n/  
} >*%ySlZbs  
} ^!^8]u<Q  
`WF?87l1  
} r-]Au -  
UNLy{0tA  
快速排序: 2GECcx53  
. (*V|&n  
package org.rut.util.algorithm.support; K V ^ `  
hnS ~r4  
import org.rut.util.algorithm.SortUtil; $oK,&_  
Vf6lu)Z c1  
/** ,c_[`q\  
* @author treeroot 30]?Jz6m  
* @since 2006-2-2 z<_{m 4I;  
* @version 1.0 EOhUr=5~  
*/ b8)>:F  
public class QuickSort implements SortUtil.Sort{ }S'+Ytea  
s9) @$3\  
/* (non-Javadoc) WQ4:='(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4A0R07"  
*/ e#L/  
public void sort(int[] data) { 7dI+aJ  
quickSort(data,0,data.length-1); y|V/xm+Fp  
} 0[}"b(O{  
private void quickSort(int[] data,int i,int j){ Md'd=Y_0  
int pivotIndex=(i+j)/2; 5T}$+R0&  
file://swap hX\XNiCiK8  
SortUtil.swap(data,pivotIndex,j); dUeM+(s1  
Y1EN|!WZ  
int k=partition(data,i-1,j,data[j]); ~=(?Z2UDA_  
SortUtil.swap(data,k,j); 7(na?Z$  
if((k-i)>1) quickSort(data,i,k-1); Q(gu ";&  
if((j-k)>1) quickSort(data,k+1,j); ->&AJI0  
2Jrr;"r  
} %*]3j^b Q+  
/** %YefTk8cr,  
* @param data 'wz*GMGWC  
* @param i _m0H gLS~  
* @param j rFZB6A<(]  
* @return 5~4I.+~8  
*/ dsqqq,>Q  
private int partition(int[] data, int l, int r,int pivot) { f33'2PYl  
do{ $6atr-Pb  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y[Us"K`  
SortUtil.swap(data,l,r); [~?LOH  
} A- IpE  
while(l SortUtil.swap(data,l,r); Jis{k$4  
return l; YMLo~j4J  
} L <]j&  
D:'|poH  
} 34U/"+|z  
/78gXHv  
改进后的快速排序: ')I/D4v  
My'M ~#kO,  
package org.rut.util.algorithm.support; & PrV+Lv  
=K{$?%"  
import org.rut.util.algorithm.SortUtil; YFOK%7K  
-QCo]:cp  
/** Z'<=06  
* @author treeroot ^*'|(Cv  
* @since 2006-2-2 j#y_#  
* @version 1.0 z^I"{eT8  
*/ Qpiv,n  
public class ImprovedQuickSort implements SortUtil.Sort { wcP0PfY  
|ap{+ xh  
private static int MAX_STACK_SIZE=4096; uF9p:FvN8  
private static int THRESHOLD=10; ]oP2T:A  
/* (non-Javadoc) fDp_W1yH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dz &| 3o  
*/ //`heFuc]>  
public void sort(int[] data) { n@{fqj  
int[] stack=new int[MAX_STACK_SIZE]; T^S|u8f  
_WtX8  
int top=-1; R+8+L|\wHv  
int pivot; 8dq{.B?  
int pivotIndex,l,r; 01 6l$K4  
o+`W  
stack[++top]=0; bP&o] ?dN  
stack[++top]=data.length-1; %l[Cm4  
1K^blOLXe  
while(top>0){ A,e/y  
int j=stack[top--]; DSYtj} >  
int i=stack[top--]; 1F-o3\  
k=H{gt  
pivotIndex=(i+j)/2; |~hSK  
pivot=data[pivotIndex]; ST)l0c+Y>  
?2OT:/I,  
SortUtil.swap(data,pivotIndex,j); ##BMh!  
1gts=g.  
file://partition qqQnL[`)C  
l=i-1; FyJI@PZdI-  
r=j; `da6}Vqj:  
do{ &1893#V  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D4G*K*z,w4  
SortUtil.swap(data,l,r); [yL %+I  
} <%<}];bmFL  
while(l SortUtil.swap(data,l,r); I(P|`"  
SortUtil.swap(data,l,j); 2GXAq~h@  
?cCh?> h  
if((l-i)>THRESHOLD){ *ZyIbT  
stack[++top]=i; &5Ea6j  
stack[++top]=l-1; cQzd0X  
} [wRk )kl`  
if((j-l)>THRESHOLD){ oh%T4 $  
stack[++top]=l+1; VXZdRsV8T  
stack[++top]=j; HnUM:-6  
} e'(n ^_$nl  
+`u]LOAyP=  
} r-'\<d(J$  
file://new InsertSort().sort(data); yfiRMN"2  
insertSort(data); NS-u,5Jt  
} Ud^+a H  
/** {z|0Y&>[=  
* @param data 2W|4  
*/ }fZT$'*;  
private void insertSort(int[] data) { })g|r9=  
int temp; |;6FhDW+'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?0hk~8c  
} zN#$eyt  
} 7on$}=%  
} 9~ajEs  
5dT-{c%w4  
} LTS3[=AB  
] $$ciFM  
归并排序: -WE pBt7*  
m@.4Wrv  
package org.rut.util.algorithm.support; #l2wF>0  
f,d @*E  
import org.rut.util.algorithm.SortUtil; - 4'yp  
G~a;q+7v'$  
/** *y5d&4G2  
* @author treeroot &E.0!BuqV  
* @since 2006-2-2 %bZ3^ ub}t  
* @version 1.0 U|g4t=@ZR  
*/ &at>pV3_  
public class MergeSort implements SortUtil.Sort{ KArf:d  
M ioS  
/* (non-Javadoc) )J<Li!3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "'94E,W  
*/ aWm0*W"(@  
public void sort(int[] data) { YN n,{Xi  
int[] temp=new int[data.length]; y mY,*Rb  
mergeSort(data,temp,0,data.length-1); hZY+dHa]  
} kWjCSC>jA  
Au#(guvm  
private void mergeSort(int[] data,int[] temp,int l,int r){ 0?BT*  
int mid=(l+r)/2; Ooc,R(  
if(l==r) return ; Zla5$GM  
mergeSort(data,temp,l,mid); Ag }hyIl  
mergeSort(data,temp,mid+1,r); ?qAX *j  
for(int i=l;i<=r;i++){ ]n${j/x  
temp=data; GuQ3$B3j  
} 7XT2d=)"  
int i1=l; 8UwL%"?YB  
int i2=mid+1; `O.*qs5  
for(int cur=l;cur<=r;cur++){ uh\I'  
if(i1==mid+1) xVuGean Cv  
data[cur]=temp[i2++]; j +@1frp  
else if(i2>r) =y,_FFoS  
data[cur]=temp[i1++]; _:+W0YS  
else if(temp[i1] data[cur]=temp[i1++]; D2E~ c? V  
else D`3}j  
data[cur]=temp[i2++]; vpv PRwJ  
} aN ). G1  
} _MR|(mV  
@za?<G>!'e  
} +I/7eIG?|  
~d/Doi  
改进后的归并排序:  v#IW;Rj8  
%g5weiFM  
package org.rut.util.algorithm.support; E+dr\Xhv  
DvF`KHsy  
import org.rut.util.algorithm.SortUtil;  .r[DqC  
szF[LRb  
/** %.pX!jL  
* @author treeroot (=CV")tF  
* @since 2006-2-2 *^=`HE89S  
* @version 1.0 llhJ,wD  
*/ (nbqL+  
public class ImprovedMergeSort implements SortUtil.Sort { 6NZ3(   
[ k^6#TQcn  
private static final int THRESHOLD = 10; $bF.6  
 8y OzD  
/* /jC0[%~jV  
* (non-Javadoc) R5X<8(4p  
* ]Q-ON&/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #PVgx9T=_  
*/ IJD'0/R'c  
public void sort(int[] data) { Axk p  
int[] temp=new int[data.length]; nrUrMnlg  
mergeSort(data,temp,0,data.length-1); y,DK@X  
} "6Nma)8  
KAjKv_6=g  
private void mergeSort(int[] data, int[] temp, int l, int r) { uWG'AmK_#E  
int i, j, k; )Y\},O  
int mid = (l + r) / 2; NlU:e}zGR  
if (l == r) 16keCG\  
return; J}i$ny_3OB  
if ((mid - l) >= THRESHOLD) rxI?|}4  
mergeSort(data, temp, l, mid); ;pU9ov4)  
else wDem }uO  
insertSort(data, l, mid - l + 1); -F4CHpua  
if ((r - mid) > THRESHOLD) O#H`/z  
mergeSort(data, temp, mid + 1, r); YCeE?S1gk3  
else ZJP.-`U  
insertSort(data, mid + 1, r - mid); A_{QY&%m  
#`:60#l  
for (i = l; i <= mid; i++) { \'GX^0yK  
temp = data; Al$"k[-Uin  
} x,2+9CCU  
for (j = 1; j <= r - mid; j++) { {p 9y{$  
temp[r - j + 1] = data[j + mid]; I=D`:u\H  
} > 9JzYI^  
int a = temp[l]; _ Eq:Qbw#  
int b = temp[r]; \$VtwVQ,b  
for (i = l, j = r, k = l; k <= r; k++) { |C=^:@}ri?  
if (a < b) { h K@1 s  
data[k] = temp[i++]; qX0IHe  
a = temp; I:]s/r7  
} else { Vd)iv\a  
data[k] = temp[j--]; e&8pTD3  
b = temp[j]; }Da8S|)H  
} 9gn_\!Mp  
} CYEqH2"3  
} YXg:cXE8e  
_:c8YJEG{  
/** < hZA$.W3  
* @param data 6@wnF>'/\  
* @param l MGX,JW>L  
* @param i (+@3Dr5o0}  
*/ Vhz?9i6|g^  
private void insertSort(int[] data, int start, int len) { '|J-8"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }f^K}*sK$5  
}  3i?{E ^  
}  n1y#gC  
} r7C  m  
} yHCQY4/  
G+m|A*[>  
堆排序: A}~hc&J  
xY5Idl->  
package org.rut.util.algorithm.support; h}q+Dw.i  
6b-d#H/1Y  
import org.rut.util.algorithm.SortUtil; Z:,HB]&;9  
}-V .upl  
/** ?j ?{} Z  
* @author treeroot %a8'6^k  
* @since 2006-2-2 C(}9  
* @version 1.0 6DaH+  
*/ m1]rLeeEt  
public class HeapSort implements SortUtil.Sort{ zST# X}  
VXn]*Mo  
/* (non-Javadoc) MZn7gT0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qk~QcVg  
*/ [jD O8n/  
public void sort(int[] data) { #ZCgpg$wM  
MaxHeap h=new MaxHeap(); 6\\B{%3R2  
h.init(data); ]o6yU#zn~e  
for(int i=0;i h.remove(); #bsRL8@  
System.arraycopy(h.queue,1,data,0,data.length); yeE_1C .  
} OJ@';ZyT=  
}s}b]v  
private static class MaxHeap{ Lt@4F   
]=WJ%p1l  
void init(int[] data){ KKGAk\X  
this.queue=new int[data.length+1];  YDi_Gl$  
for(int i=0;i queue[++size]=data; oxPOfI1%]  
fixUp(size); U[U$1LSS  
} +'uF3- +WY  
} 6M"J3\ x  
z;#}u C  
private int size=0; q&jZmr  
[53@'@26  
private int[] queue; +]I;C  
_#f/VE  
public int get() { q,aWF5m@  
return queue[1]; +**H7: bO  
} ^T(l3r  
lH:TE=|4  
public void remove() { nP 2rN_:4  
SortUtil.swap(queue,1,size--); F8_pwJUpf-  
fixDown(1); P%' bSx1  
} "!E(= W?  
file://fixdown n_$lRX5  
private void fixDown(int k) { ?tqTG2!(  
int j; r5lp<md  
while ((j = k << 1) <= size) { DXSZ#^,S[W  
if (j < size %26amp;%26amp; queue[j] j++; ;NLL?6~  
if (queue[k]>queue[j]) file://不用交换 TjD`< k  
break; %j2YCV7  
SortUtil.swap(queue,j,k); eK/[jxNO  
k = j; U QXT&w  
} .X_k[l9  
} .g(yTA  
private void fixUp(int k) { e<~uU9 lg1  
while (k > 1) { .A\9|sRZ5  
int j = k >> 1; T6O Ib  
if (queue[j]>queue[k]) Tud[VS?99  
break; &:akom8  
SortUtil.swap(queue,j,k); 0e q>  
k = j; TQE3/IL  
} \{{B57/Isq  
} o6xl,T%  
E|6X.Ny]   
} fU>"d>6!S  
$o/ ?R]h  
} J:#B,2F+^  
oF]0o`U&a  
SortUtil: E`LML?   
Ywr^uy1V,/  
package org.rut.util.algorithm; t.lm`=  
A[htG\A` 0  
import org.rut.util.algorithm.support.BubbleSort; l= ~]MSwY  
import org.rut.util.algorithm.support.HeapSort; u6t.$a!5  
import org.rut.util.algorithm.support.ImprovedMergeSort; ouVR[w>V  
import org.rut.util.algorithm.support.ImprovedQuickSort; kn+`2-0  
import org.rut.util.algorithm.support.InsertSort; jl3RE|M\<  
import org.rut.util.algorithm.support.MergeSort; T>vHZZiO  
import org.rut.util.algorithm.support.QuickSort; Nf-IDK  
import org.rut.util.algorithm.support.SelectionSort; 9y.C])(2  
import org.rut.util.algorithm.support.ShellSort; C<qJnB:B 9  
h(GgkTj4+  
/** "*%=k%'  
* @author treeroot qa`bR%eH  
* @since 2006-2-2 NZ7a^xT_)  
* @version 1.0 `+1*)bYxU  
*/ S@N&W&W#~  
public class SortUtil { 3|9) A+,#  
public final static int INSERT = 1; =;dupz\7  
public final static int BUBBLE = 2; 9p2"5x  
public final static int SELECTION = 3; ,8+SQo #3  
public final static int SHELL = 4; p8Lb*7W  
public final static int QUICK = 5; )"t=sFxaB  
public final static int IMPROVED_QUICK = 6; bC?t4-W  
public final static int MERGE = 7; Wj.)wr!  
public final static int IMPROVED_MERGE = 8; =]-!  
public final static int HEAP = 9; c!{.BgGN  
pR`.8MMc8  
public static void sort(int[] data) { F~W*"i+EZ  
sort(data, IMPROVED_QUICK); W`6nMFg  
} VIAj]Ul  
private static String[] name={ (zk'i13#6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y'2K7\>E  
}; xx!o]D-}  
{< jLfL1  
private static Sort[] impl=new Sort[]{ %J~8a_vO  
new InsertSort(), kl3#&>e  
new BubbleSort(), dE/Vl/:  
new SelectionSort(), 1tQZyHc42;  
new ShellSort(), #3kR}Amow  
new QuickSort(), 2}~1poyi>  
new ImprovedQuickSort(), ',m,wp`  
new MergeSort(), `j_R ?mY  
new ImprovedMergeSort(), <| Xf4.  
new HeapSort() $'?CY)h{  
}; Zm&Zz^s  
8{%/!ylJz  
public static String toString(int algorithm){ N7+K$)3  
return name[algorithm-1]; Q}\,7l  
} cS QUK  
=Q3Go8b4HJ  
public static void sort(int[] data, int algorithm) { r;upJbSX  
impl[algorithm-1].sort(data); +vDT^|2SF  
} 99 :`58G  
]$0{PBndW  
public static interface Sort { ^row=5]E  
public void sort(int[] data); ,dZ 9=]  
} <`-"K+e!J  
CEqfsKrsxE  
public static void swap(int[] data, int i, int j) { 1hi^  
int temp = data; )z7. S"U  
data = data[j]; P63z8^y  
data[j] = temp; if#$wm%  
} -7m;rD4J  
} KGP2,U6  
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