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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。 u =|A  
插入排序: ?Q/9aqHe;  
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package org.rut.util.algorithm.support; Jc,{ n*  
so }Kb3n  
import org.rut.util.algorithm.SortUtil; pu5-=QN  
/** S@eI3Pk E  
* @author treeroot z=a{;1A  
* @since 2006-2-2 ]`}R,'P  
* @version 1.0 3QD##Wr^  
*/ e]u3[ao  
public class InsertSort implements SortUtil.Sort{ QVQ?a&HYS  
q /^&si  
/* (non-Javadoc) 28d=-s=[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aDE)Nf}  
*/ dS"%( ?o  
public void sort(int[] data) { ntEf-x<  
int temp; UU 2 =W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }~$96|J  
} N TL`9b  
} (ZHEPN  
} y3pr(w9A  
.RxAYf|  
} [9xUMX^}  
EFS2 zU  
冒泡排序: 3NC-)S  
\F8*HPM=*  
package org.rut.util.algorithm.support; $K*&Wdo  
or..e  
import org.rut.util.algorithm.SortUtil; \k)(:[^FY  
Pdw[#X<[`  
/** 9Sk?tl  
* @author treeroot -<.b3Mh  
* @since 2006-2-2 mqb6MnK -  
* @version 1.0 pTk1iGfB  
*/ :{KoZd  
public class BubbleSort implements SortUtil.Sort{ i;8tA !  
)gP0+W!u  
/* (non-Javadoc) Z}4 `y"By  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4O** %!|  
*/ :,BKB*a\  
public void sort(int[] data) { l*z.20^P  
int temp; 9?#L/  
for(int i=0;i for(int j=data.length-1;j>i;j--){ K\`>'C2_V  
if(data[j] SortUtil.swap(data,j,j-1); 63n<4VSH  
} Vpsv@\@J>  
} "R v],O"  
} -% Z?rn2  
} 8m;tgMFO  
::A]p@  
} 5cE?>  
U#U nM,3%  
选择排序: 298@&_  
sy;_%,}N  
package org.rut.util.algorithm.support; )I`Ma6bX  
01" b9`jU  
import org.rut.util.algorithm.SortUtil; Zjx:1c= b  
\%+5p"Z<  
/** Z/hgr|&}  
* @author treeroot \,5OPSB  
* @since 2006-2-2 { |[n>k   
* @version 1.0 aZ{]t:]  
*/ #0;ULZ99aH  
public class SelectionSort implements SortUtil.Sort { yxz"9PE/P  
f]Q`8nU  
/* sHQ82uX  
* (non-Javadoc) %\2w 1  
* 26Jb{o9Z<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .y~vn[qN  
*/ ;VAHgIpx;  
public void sort(int[] data) { zwa%$U  
int temp; K6l{wyMb|  
for (int i = 0; i < data.length; i++) {  }L.&@P<  
int lowIndex = i;  *c6o#[l  
for (int j = data.length - 1; j > i; j--) { eAD uk!Iq  
if (data[j] < data[lowIndex]) { j"c30AY  
lowIndex = j; o)pso\;  
}  N\9 Wxz$  
} <|MF\D'  
SortUtil.swap(data,i,lowIndex); =xq+r]g6  
} =~f\m:Y  
} }hy, }2(8  
mjtmN0^SR  
} e7^B3FOx  
kg^VzNX  
Shell排序: qu:nV"~_  
F+3}Gkn  
package org.rut.util.algorithm.support; Lradyo44u\  
|kXx9vGq@  
import org.rut.util.algorithm.SortUtil; c/Ykk7T9--  
z[`O YwsW  
/** (7Q Fy  
* @author treeroot R#x~f  
* @since 2006-2-2 vRQ7=N{3  
* @version 1.0 ',Q|g^rF]  
*/ y:R!E *.L'  
public class ShellSort implements SortUtil.Sort{ 86AZ)UP2D  
<)dHe:  
/* (non-Javadoc) ;mAlF>6]\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {5, ]7=]  
*/ OmR) W'  
public void sort(int[] data) { X5gI'u  
for(int i=data.length/2;i>2;i/=2){ exHg<18WSe  
for(int j=0;j insertSort(data,j,i); y]e[fZ`L  
} R ]! [h  
} :7 P/ZC%  
insertSort(data,0,1); hmQ;!9  
} 9_  
+xc1cki_{  
/** 9$[PA jwk  
* @param data NM{/rvM  
* @param j iUua!uC  
* @param i k:qS'  
*/ G (o9*m1  
private void insertSort(int[] data, int start, int inc) { /eO :1c  
int temp; V6ICR{y<3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4fyds< f  
} 8*iIJ  
} C3"5XR_Ov  
} &xYO6_.  
tvlrUp  
} (rfR:[JkC2  
x [_SNX"  
快速排序: O ;dtz\  
'fIoN%  
package org.rut.util.algorithm.support; 'C2X9/!,  
s9)U",  
import org.rut.util.algorithm.SortUtil; (/a#1Pd&  
;LXwW(_6d  
/** p-Jp/*R5  
* @author treeroot lIUaGz|  
* @since 2006-2-2 2]}4)_&d<e  
* @version 1.0 P\lEfsuR  
*/ T{:~v+I=  
public class QuickSort implements SortUtil.Sort{ S[ln||{  
'OTQiI^t=  
/* (non-Javadoc) * ",/7(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fR$_=WWN>h  
*/ :yi?<  
public void sort(int[] data) { 9-3, DxZ}  
quickSort(data,0,data.length-1); . \t8s0A  
} rn9n_)  
private void quickSort(int[] data,int i,int j){ Oe~x,=X)  
int pivotIndex=(i+j)/2; 9>6DA^  
file://swap rV_i|  
SortUtil.swap(data,pivotIndex,j); @$aGVEcU$  
LGdM40  
int k=partition(data,i-1,j,data[j]); 9Gc4mwu  
SortUtil.swap(data,k,j); ~9[O'  
if((k-i)>1) quickSort(data,i,k-1); /f}!G  
if((j-k)>1) quickSort(data,k+1,j); Q_r}cL/A  
H _0F:e  
} VchI0KL?  
/** d2a*xDkv  
* @param data YLsOA`5X  
* @param i 2if7|o$=  
* @param j MfA@)v  
* @return h4#y'E!,Z  
*/ F(?O7z"d  
private int partition(int[] data, int l, int r,int pivot) { -Lhq.Q*a  
do{ B{ Ab #  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :*} -,{uX  
SortUtil.swap(data,l,r); 'EHt A9M  
} 9,wD  
while(l SortUtil.swap(data,l,r); 4^Y{ BS fF  
return l; 7M/v[dwL  
} m!K`?P]:N  
('k9XcTPP  
} q S qS@+p  
_1,hO?TK  
改进后的快速排序: +6`+Q2qi  
fg)VO6Wo&  
package org.rut.util.algorithm.support; ?:42jp3  
T!7B0_  
import org.rut.util.algorithm.SortUtil; )! eJW(  
AxtmG\o>  
/** D){my_ /  
* @author treeroot 48IrC_0j  
* @since 2006-2-2 64i*_\UKe  
* @version 1.0 @xXVJWEU:  
*/ nZ'-3  
public class ImprovedQuickSort implements SortUtil.Sort { ?XbM  
=%ok:+D]  
private static int MAX_STACK_SIZE=4096; y1)ZO_'  
private static int THRESHOLD=10; @PT([1C  
/* (non-Javadoc) ZuFcJ?8i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vak\N)=u  
*/ 8<)ZpB,7  
public void sort(int[] data) { hYht8?6}m  
int[] stack=new int[MAX_STACK_SIZE]; {vq| 0t\-  
u*T( n s l  
int top=-1; "g,`Ks ];  
int pivot; xG(xG%J  
int pivotIndex,l,r; bu9.Hv T'  
J%u,qF}h  
stack[++top]=0; 'Qh1$X)R7a  
stack[++top]=data.length-1; T-LX>*  
kV+%(Gl8  
while(top>0){ c'.XC}  
int j=stack[top--]; lvsj4 cT  
int i=stack[top--]; !-t,r%CG  
Vw|P;LLl`  
pivotIndex=(i+j)/2; M#_|WL~  
pivot=data[pivotIndex]; [ {$%9lm  
\%|Xf[AX  
SortUtil.swap(data,pivotIndex,j); PjD9D.  
i\,I)S%yJ  
file://partition p|C[T]J\@  
l=i-1; fX.1=BjXi  
r=j;  k^Q.lb {  
do{ 4*ZY#7h  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); .ht-*  
SortUtil.swap(data,l,r); E<jW; trt_  
} <2E|URo,#  
while(l SortUtil.swap(data,l,r); &|<f|B MX  
SortUtil.swap(data,l,j); iF9d?9TWl  
o! l Ykud  
if((l-i)>THRESHOLD){ )n]" ~I^  
stack[++top]=i; o1vK2V  
stack[++top]=l-1; 5X f]j=_  
} ;I&XG  
if((j-l)>THRESHOLD){ j4<K0-?  
stack[++top]=l+1; Xhq7)/jp  
stack[++top]=j; NS65F7<&  
} P(3k1SM  
[#9i@40  
} WfD fj  
file://new InsertSort().sort(data); EV?U !O  
insertSort(data); T](}jQxj`  
} R G*Vdom  
/** $AT@r"  
* @param data o] Xt2E  
*/ 41x"Q?.bY  
private void insertSort(int[] data) { /O5&)%N  
int temp; e P,bFc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Wqkzj^;"G  
} Wqkb1~]#Y  
} o{6q>Jm  
} \{}dn,?Fv  
N+ak{3  
} 8qqN0"{,  
,3!$mQL=  
归并排序: *E*oWb]H  
{zWR)o .=  
package org.rut.util.algorithm.support; 9b/Dswxjx  
ESNI$[`  
import org.rut.util.algorithm.SortUtil; @ 5^nrB  
-OSj<m<  
/** ^DN:.qQ  
* @author treeroot 8L,=Eap  
* @since 2006-2-2 FieDESsX>  
* @version 1.0 >MGWN  
*/ c} +*$DeT  
public class MergeSort implements SortUtil.Sort{ *5 +GJWKN  
g@37t @I  
/* (non-Javadoc) {"+M%%`*#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PJcfiRa'jQ  
*/ s-_D,$ |  
public void sort(int[] data) { =#/Kg_RKL  
int[] temp=new int[data.length]; V ^+p:nP  
mergeSort(data,temp,0,data.length-1); J*[@M*R;&  
} 4Wp5[(bg  
'L7qf'RV  
private void mergeSort(int[] data,int[] temp,int l,int r){ SIV !8mz  
int mid=(l+r)/2; h~m,0nGO  
if(l==r) return ; .07`nIs"  
mergeSort(data,temp,l,mid); ~N/r;omVc  
mergeSort(data,temp,mid+1,r); *X(:vET  
for(int i=l;i<=r;i++){ X%+lgm+  
temp=data; R!%nzL@e&`  
} 0_eqO'"  
int i1=l; mwo:+^v(  
int i2=mid+1; HT6 [Z1  
for(int cur=l;cur<=r;cur++){ #n'.a1R  
if(i1==mid+1)  v&|65[<  
data[cur]=temp[i2++]; `Bw]PO  
else if(i2>r) "bIb?e2h9G  
data[cur]=temp[i1++]; X+C*+k,z  
else if(temp[i1] data[cur]=temp[i1++]; a8f#q]TyQ  
else %\v8 FCb  
data[cur]=temp[i2++]; ?0_<u4  
} V D~5]TQ  
} \4L ur  
0eNdKE  
} %W"u4 NT7  
u MEM7$o  
改进后的归并排序: ? Bpnnwx  
a$ "nNmD?  
package org.rut.util.algorithm.support; g5|~ i{"0  
4 kjfYf@A  
import org.rut.util.algorithm.SortUtil;  ,\s`T O  
Z-Uu/GjB  
/** @QQ%09*  
* @author treeroot )A$"COM4  
* @since 2006-2-2 DxV=S0P  
* @version 1.0 st;iGg  
*/ b2OwLt9  
public class ImprovedMergeSort implements SortUtil.Sort { b)<WC$"  
r*+~(83k  
private static final int THRESHOLD = 10; .`}TND~  
@"@|O>KJ  
/* q1T)H2S  
* (non-Javadoc) ->rqr#  
* s`jlE|jtN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n.&7lg^X  
*/ {+WBi(=W  
public void sort(int[] data) { w6i2>nu_O  
int[] temp=new int[data.length]; pM?~AYWb  
mergeSort(data,temp,0,data.length-1); oI;ho6y)  
} V 9Qt;]mQ  
-K'UXoU1  
private void mergeSort(int[] data, int[] temp, int l, int r) { (dq_ ,LI  
int i, j, k; =/Gd<qz3  
int mid = (l + r) / 2; nzC *mPX8  
if (l == r) uQIPnd(V  
return; cuN9R G  
if ((mid - l) >= THRESHOLD) Z*m^K%qJ  
mergeSort(data, temp, l, mid); YGJ!!(~r  
else Hu"$ )V  
insertSort(data, l, mid - l + 1); 509T?\r  
if ((r - mid) > THRESHOLD) ]SCHni_  
mergeSort(data, temp, mid + 1, r); ^eh.Iml'@  
else 7GOBb|  
insertSort(data, mid + 1, r - mid); -G.N  
]p`y  
for (i = l; i <= mid; i++) { l8FJ\5'M  
temp = data; 5vyg-'  
} A|\A|8=b  
for (j = 1; j <= r - mid; j++) { lxyTh'  
temp[r - j + 1] = data[j + mid]; )8A.Wg4S;c  
} QPVi& *8_  
int a = temp[l]; itYoR-XJ  
int b = temp[r]; Voo'ZeZa  
for (i = l, j = r, k = l; k <= r; k++) { /oT~CB..  
if (a < b) { ZAr6RRv ^  
data[k] = temp[i++]; H~Uf2A)C  
a = temp; Sb[>R(0:  
} else { k24I1DlR8  
data[k] = temp[j--]; \J+a7N8m,  
b = temp[j]; !|Q&4NS  
} ,{PN6B  
} ~JT`q: l-q  
} ] 0X|_bU  
wH ,PA:  
/** Pvc)-A  
* @param data gD9CA*  
* @param l -TF},V~  
* @param i l zFiZx  
*/ Wq A) V,E  
private void insertSort(int[] data, int start, int len) { K,g6y#1"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); M{J>yN  
} 9<u&27.  
} ] `$6=) _X  
} IU8zidn&  
} cb^IJA9}  
$VmV>NZ  
堆排序: e3ZRL91c  
F_qApyU,7  
package org.rut.util.algorithm.support; rr tMd  
k*C69  
import org.rut.util.algorithm.SortUtil; l$gJ^Wf2gY  
A;;#]]48  
/** @} r*KF-  
* @author treeroot zDdo RK@  
* @since 2006-2-2 t{] 6GlW  
* @version 1.0 d~aTjf  
*/ ArtY;.cg%  
public class HeapSort implements SortUtil.Sort{ 0eA <nK  
~rV$.:%va  
/* (non-Javadoc) g$uiwqNA%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wO,qFY  
*/ +S~ u,=  
public void sort(int[] data) { { 4j<X5V  
MaxHeap h=new MaxHeap(); :zU4K=kR  
h.init(data); ~!({U nt+'  
for(int i=0;i h.remove(); !f/K:CK|  
System.arraycopy(h.queue,1,data,0,data.length);  vc: kY  
} eQ'E`S_d  
>Lcu  
private static class MaxHeap{ ? X8`+`nh  
a?y ucA  
void init(int[] data){ _/:--Z  
this.queue=new int[data.length+1]; &u:U"j  
for(int i=0;i queue[++size]=data; u0wu\  
fixUp(size); j EbmW*   
} 1|p\rHGd  
} <sC(a7i1  
fQ9af)d  
private int size=0; )zWu\ JRp  
(Mfqzy  
private int[] queue; TIp\-  
.u A O.<  
public int get() { %`$bQU  
return queue[1]; >J9Qr#=H2  
} E/H9#  
0")_%  
public void remove() { C/!P&`<6  
SortUtil.swap(queue,1,size--); Zg_b(ks  
fixDown(1); \l=A2i7TQ  
} vVBWhY]  
file://fixdown O.dZ3!!+  
private void fixDown(int k) { !*c%Dj  
int j; Ue9d0#9  
while ((j = k << 1) <= size) { |}77'w :  
if (j < size %26amp;%26amp; queue[j] j++; '@24<T]  
if (queue[k]>queue[j]) file://不用交换 k x:+mF  
break; 8;qOsV)UDT  
SortUtil.swap(queue,j,k); mg*iW55g  
k = j; !"hlG^*9  
} Z84w9y7O<  
} d*TH$-F!p  
private void fixUp(int k) { b|87=1^m[  
while (k > 1) { 9+(b7L   
int j = k >> 1; %{ U (y#  
if (queue[j]>queue[k]) @^0}wk  
break; !v3d:n\W8  
SortUtil.swap(queue,j,k); |$tF{\  
k = j; \/dOv [  
} */{y%  
} c:=HN-*vQ  
=?CIC%6m  
} .P8m%$'N  
k'X"jon  
} xRZ K&vkKE  
WDnNVE  
SortUtil: k Jz^\Re  
,M]W_\N~E  
package org.rut.util.algorithm; ~p+ `pwjY1  
\V~B+e  
import org.rut.util.algorithm.support.BubbleSort; v#d3W| ~  
import org.rut.util.algorithm.support.HeapSort; fhk(<KZvJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; o JVdFE  
import org.rut.util.algorithm.support.ImprovedQuickSort; c @lF*"4  
import org.rut.util.algorithm.support.InsertSort; &xr(Kb  
import org.rut.util.algorithm.support.MergeSort; &#C|  
import org.rut.util.algorithm.support.QuickSort; cm!vuoB~~  
import org.rut.util.algorithm.support.SelectionSort; hXH+C-%{  
import org.rut.util.algorithm.support.ShellSort; *k\ ;G?  
L]YJ#5  
/** E\2f"s  
* @author treeroot %M_F/O  
* @since 2006-2-2 kJ* N`=  
* @version 1.0 An]Vx<PD  
*/ -Nr*na^H9#  
public class SortUtil { h1'm[Y  
public final static int INSERT = 1; )1R[~]y  
public final static int BUBBLE = 2; MHE/#G  
public final static int SELECTION = 3; <&+0  
public final static int SHELL = 4; (;Bh7Ft  
public final static int QUICK = 5; 6=%\@  
public final static int IMPROVED_QUICK = 6; 2U R1T~r  
public final static int MERGE = 7;  v?d`fd  
public final static int IMPROVED_MERGE = 8; 9QD+  
public final static int HEAP = 9; 4[Ko|  
G_WFg$7G%  
public static void sort(int[] data) { 1)u,%  
sort(data, IMPROVED_QUICK); r" |do2s  
} xJ^B.;>  
private static String[] name={ ]'<}kJtN.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" iqF|IVPoi  
}; &w=ul'R98  
-{oZK{a1  
private static Sort[] impl=new Sort[]{ WM9({BZ  
new InsertSort(), ;<MHl[jJD  
new BubbleSort(), 4<EC50@.  
new SelectionSort(), Ga^:y=m  
new ShellSort(), njNqUo>  
new QuickSort(), ra ,.vJuT  
new ImprovedQuickSort(), K6F05h 5S  
new MergeSort(), t[HsqnP  
new ImprovedMergeSort(), A'uubFRL2[  
new HeapSort() _Kli~$c& M  
}; p=[I;U-#H  
Eb'M< ZY  
public static String toString(int algorithm){ t@2MEo  
return name[algorithm-1]; 5HB*  
} ocS}4.a@  
RdjoVCf  
public static void sort(int[] data, int algorithm) { \+ Ese-la  
impl[algorithm-1].sort(data); |]HA@7B  
} +Lr`-</VF  
Eg4&D4TG p  
public static interface Sort { Q*f0YjH!  
public void sort(int[] data); Rto/-I0l  
} ~1Ffu x  
ZlMS=<hgFx  
public static void swap(int[] data, int i, int j) { 6m:$RW  
int temp = data; p`"Ic2xPJ  
data = data[j]; uowdzJ7  
data[j] = temp; x=W5e ^0?  
} 1Si$Q  
} ;Rxc(tR!n  
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