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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。 rXP~k]tC  
插入排序: Xz`0nU  
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package org.rut.util.algorithm.support; l"-Z#[  
% :h %i|  
import org.rut.util.algorithm.SortUtil; Z C<+BKS  
/** @;\0cE n>  
* @author treeroot $b(CN+#  
* @since 2006-2-2 rCUGaf~  
* @version 1.0 nF B]#LLv  
*/ MX iQWg$  
public class InsertSort implements SortUtil.Sort{ dTjDVq&Hz  
9y&bKB2,  
/* (non-Javadoc) |j~l%d*<w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s'|t2`K("  
*/ 6H=gura&   
public void sort(int[] data) { 0X3yfrim  
int temp; UmR4zGM}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2Qt!JXC  
} ~7an j.  
} "hi03k  
} %=!] 1  
u'nQC*iJb  
} hd6O+i Y4  
?lML+  
冒泡排序: %&S9~E D  
2VzYP~Jg  
package org.rut.util.algorithm.support; 2+_a<5l~  
,l Y4WO  
import org.rut.util.algorithm.SortUtil; ^t:dcY7  
2RQ- L  
/** P V:J>!]  
* @author treeroot >n^780S|  
* @since 2006-2-2 T*nP-b  
* @version 1.0 A=3L_ #nO  
*/ :bm%f%gg  
public class BubbleSort implements SortUtil.Sort{ vA}_x7}n(  
l0C`teO  
/* (non-Javadoc) mRa\ wEg%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0<O()NMv  
*/ )2_[Ww|.  
public void sort(int[] data) { -n8d#Qm)  
int temp; 3{f g3?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W.NZ%~|+e/  
if(data[j] SortUtil.swap(data,j,j-1); <{GVA0nr  
} c_8<N7 C  
} A; wT`c  
} =r*Ykd;W|E  
} sQe GT)/|  
Pt f(p`  
} J\P6  
*MB >,HU  
选择排序: g(Q1d-L4e  
K|YB)y  
package org.rut.util.algorithm.support; aCI3Tx&2qT  
K{{_qFj@<y  
import org.rut.util.algorithm.SortUtil; zCuB+r=C  
fjOq@thD  
/** T;?k]4.X  
* @author treeroot xJ2I@*DN  
* @since 2006-2-2 |R1T;J<[  
* @version 1.0 i[@13kr  
*/ 2j}DI"|h  
public class SelectionSort implements SortUtil.Sort { 1[T7;i$  
[q_+s  
/* UKQ"sC  
* (non-Javadoc) a6-.|tt#t  
* r0 )ne|&Hp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1Dl6T\20  
*/ f:-l}Zj  
public void sort(int[] data) { Zskj?+1  
int temp; >=|p30\b  
for (int i = 0; i < data.length; i++) { ;0Pv49q  
int lowIndex = i; nQoQNB  
for (int j = data.length - 1; j > i; j--) { J|].h  
if (data[j] < data[lowIndex]) { r5Tdp)S  
lowIndex = j; &iVdqr1,  
} y?3.W  
} )9:5?,SO  
SortUtil.swap(data,i,lowIndex); (v%24bv  
} Q{RmE:  
} H=Ilum06  
KVJ, a  
} (Xcy/QT  
fj)) Hnt(|  
Shell排序: i5t6$|u:&m  
f+Sb> $  
package org.rut.util.algorithm.support; -~|{q)!F  
{X&lgj  
import org.rut.util.algorithm.SortUtil; 80wzn,o S  
&8z<~q  
/** d.^g#&h  
* @author treeroot (XQuRL<X  
* @since 2006-2-2 (rd [tc  
* @version 1.0 Ca PHF@6WN  
*/ weSq |f  
public class ShellSort implements SortUtil.Sort{ kB> ~Tb0  
9MYk5q.X:  
/* (non-Javadoc) =y4dR#R(\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b1Kt SRLV  
*/ ^w.hI5ua)  
public void sort(int[] data) { &J*M  
for(int i=data.length/2;i>2;i/=2){ 1XMR7liE  
for(int j=0;j insertSort(data,j,i); {^ b2nOMv  
} ^Aq0<  
} G$+v |z  
insertSort(data,0,1); $KO2+^%y  
} uI)twry]@  
RI0^#S_{  
/** B-R#?Xn:!I  
* @param data :Ko6.|  
* @param j ~vFa\7sf  
* @param i ( %\7dxiK  
*/ $+!dP{   
private void insertSort(int[] data, int start, int inc) { AO$AT_s  
int temp; g4$(%]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); n%s%i-[5B  
} \A"o[A2v  
} by X!,  
} %,kP_[!>Q  
 :^.wjUI  
} hPDKxYD]f  
~lys  
快速排序: [d6!  
b}3"v(  
package org.rut.util.algorithm.support; e "A"  
qk1jmr  
import org.rut.util.algorithm.SortUtil; .h7s.p?  
g[3LPKQ  
/** ]R#:Bq!F  
* @author treeroot ~ELMLwn.  
* @since 2006-2-2 [|DKBJ  
* @version 1.0 8AuBs;i  
*/ ] 3"t]U'f  
public class QuickSort implements SortUtil.Sort{ ttzNv>L,  
6<._^hyq  
/* (non-Javadoc) "6$V1B0KW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a>'ez0C  
*/ @1JwjtNk  
public void sort(int[] data) { hj [77EEz  
quickSort(data,0,data.length-1); - {QU>`2  
} [y[d7V9_o  
private void quickSort(int[] data,int i,int j){ udZOg  
int pivotIndex=(i+j)/2; ;Y$>WKsV  
file://swap &12K pEyf  
SortUtil.swap(data,pivotIndex,j); _\ToA9m  
b-&iJ &>'  
int k=partition(data,i-1,j,data[j]); ;u UFgDi  
SortUtil.swap(data,k,j); :8A+2ra&  
if((k-i)>1) quickSort(data,i,k-1); Ey&H?OFiP  
if((j-k)>1) quickSort(data,k+1,j); elOeXYO0  
G%<}TI1}  
} Nr~$i%[  
/** ,#A(I#wL~  
* @param data Ymk?@mV4  
* @param i Gt9$hB7  
* @param j 2 |s ohF  
* @return ?Z7`TnG$uf  
*/ r~t`H*C)}  
private int partition(int[] data, int l, int r,int pivot) { jxh:z  
do{ jwDlz.sW!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); @ _Ey"k<  
SortUtil.swap(data,l,r); r ]DiB:.  
} }TmOoi(X@  
while(l SortUtil.swap(data,l,r); FzT.9Vz7  
return l; U(#<D7}  
}  wA"@t  
\<4N'|:  
} zX>W 8P  
Z!1D4`w  
改进后的快速排序: 9%/hoA)  
9DxHdpOk  
package org.rut.util.algorithm.support; `8:)? 0Ez  
kQ`tY`3F  
import org.rut.util.algorithm.SortUtil; m[9.'@ ye  
2ym(fk.6{  
/** ,fkvvM{mq  
* @author treeroot Td=4V,BN  
* @since 2006-2-2 8\n3 i"  
* @version 1.0 nw+~:c  
*/ Xn6#q3;^|  
public class ImprovedQuickSort implements SortUtil.Sort { )`\hK  
xY^sC56Z  
private static int MAX_STACK_SIZE=4096; 25Dl4<-Z  
private static int THRESHOLD=10; ~M C|  
/* (non-Javadoc) m&.LJ*uM\K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CRb8WD6.  
*/ :xh{SsW@  
public void sort(int[] data) { WE<?y_0y&  
int[] stack=new int[MAX_STACK_SIZE]; N9e'jM>Oos  
"TV'}HH  
int top=-1; &`"DG$N(  
int pivot; $*yYmF  
int pivotIndex,l,r; *]6g-E?:@  
D'"  T'@  
stack[++top]=0; BuJo W@)  
stack[++top]=data.length-1; NB-dlv1  
oxwbq=a6yV  
while(top>0){ z:Ml;y  
int j=stack[top--]; bz4Gzp'6k  
int i=stack[top--]; Hq3|>OqC2Q  
*LT~:Gs#  
pivotIndex=(i+j)/2; _5oTNL2  
pivot=data[pivotIndex]; F^i3e31*t  
d+9V% T  
SortUtil.swap(data,pivotIndex,j); ]ss[n.T0*  
zA,vp^  
file://partition CWj_K2=d  
l=i-1; Av X1*  
r=j; N'Gq9A  
do{ XHr*Rs.[=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <Vat@e  
SortUtil.swap(data,l,r); Wh[QR-7Ew  
} [BWq9uE  
while(l SortUtil.swap(data,l,r); 54 lD+%E  
SortUtil.swap(data,l,j); ]%\,.&=hT  
`KJ( .m  
if((l-i)>THRESHOLD){ SQp|  
stack[++top]=i; ( xs'D4  
stack[++top]=l-1; VF%QM;I[Rc  
} !ifU}qFzK  
if((j-l)>THRESHOLD){ )H8_.]|  
stack[++top]=l+1; ;Rrh$Ag  
stack[++top]=j; P}bIp+  
} LCF}Y{  
 j]u!;]  
} =C"[o\]VV  
file://new InsertSort().sort(data);  q6 CrUn  
insertSort(data); !b8V&<  
} F'bwXb**  
/** -^_m(@A<~  
* @param data "F F$Q#)  
*/ _jWs(OmJ  
private void insertSort(int[] data) { E$ d#4x  
int temp; 5E!C?dv(z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OgQd yU  
} ]?9*Vr:P^  
} nL@'??I1  
} mypV[  
BI'>\hX/V  
} Ayz*2 N`%  
> I2rj2M#  
归并排序: S|85g1}t  
v88vr  
package org.rut.util.algorithm.support; 87 Z[0>  
#mxOwvJ  
import org.rut.util.algorithm.SortUtil; !Sc"V.o @!  
L^J4wYFTO  
/** ]e>qvSuYh  
* @author treeroot 6g(;2gY  
* @since 2006-2-2 bLqy7S9x  
* @version 1.0 #M,&g{  
*/ inh0p^  
public class MergeSort implements SortUtil.Sort{ p{f R$-d  
|z-f 8$  
/* (non-Javadoc) *a9cBl'_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8 Rx@_   
*/ =i/Df ?  
public void sort(int[] data) { {)YbksrJ{  
int[] temp=new int[data.length]; uLhGp@Dx  
mergeSort(data,temp,0,data.length-1); Od1\$\4Z  
} Sj+H{xJi  
g4K+AK  
private void mergeSort(int[] data,int[] temp,int l,int r){ +m=b "g  
int mid=(l+r)/2; %(CC  
if(l==r) return ; f56yI]*N=<  
mergeSort(data,temp,l,mid); $?= $F  
mergeSort(data,temp,mid+1,r); ^q7V%{54  
for(int i=l;i<=r;i++){ p`tz*ewC  
temp=data; %~rEJB@{  
} 3CCs_AO  
int i1=l; ah>c)1DA*H  
int i2=mid+1; B#K gU&Loo  
for(int cur=l;cur<=r;cur++){ v{u3[c   
if(i1==mid+1) Z8v\>@?5R  
data[cur]=temp[i2++]; c&['T+X  
else if(i2>r) c_/BS n  
data[cur]=temp[i1++]; 5Rbl.5. A  
else if(temp[i1] data[cur]=temp[i1++]; FP@_V-  
else |t,sK aL  
data[cur]=temp[i2++]; $BqiC!~  
} (tK_(gO  
} sh/ ,"b2!P  
|G j.E  
} K #3^GB3P  
:1'  
改进后的归并排序: L+t / E`  
]U?nYppV  
package org.rut.util.algorithm.support; }$ y.qqG  
*zrT;j G  
import org.rut.util.algorithm.SortUtil; m&)/>'W   
rH}|~  
/** $LP(\T([  
* @author treeroot _i =*0Q  
* @since 2006-2-2 Z{8%Cln  
* @version 1.0 * #yF`_p  
*/ K\xz|Gq  
public class ImprovedMergeSort implements SortUtil.Sort { V@'Xj .ze  
l@`k:?  
private static final int THRESHOLD = 10; di\.*7l?  
1k[_DQ=^l1  
/* `?VK(<w0q  
* (non-Javadoc) Gb')a/  
* 9z,sn#-t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P`tOL#UeZL  
*/ D#GuF~-F!R  
public void sort(int[] data) { g#S X$k-O  
int[] temp=new int[data.length]; E|=x+M1sH  
mergeSort(data,temp,0,data.length-1); gS(3m_  
} CL<-3y*  
q <}IO  
private void mergeSort(int[] data, int[] temp, int l, int r) { |nMjv]#  
int i, j, k; =?]`Xo,v~  
int mid = (l + r) / 2; @&jR^`Y.  
if (l == r) \kE0h\  
return; ys=2!P-[#  
if ((mid - l) >= THRESHOLD) 175e:\Tw  
mergeSort(data, temp, l, mid); %1&X+s3  
else G^'We6<  
insertSort(data, l, mid - l + 1); g;l K34{  
if ((r - mid) > THRESHOLD) kNuvJ/St  
mergeSort(data, temp, mid + 1, r); f6r!3y  
else a1,)1y~  
insertSort(data, mid + 1, r - mid);  ?K-4T  
PKlR_#EB?  
for (i = l; i <= mid; i++) { .ATpwFal  
temp = data; 3.movkj  
} ]& D dy&V  
for (j = 1; j <= r - mid; j++) { C  eEhe  
temp[r - j + 1] = data[j + mid]; 7mtx^  
} "P7OD^(x/  
int a = temp[l]; 9O g  
int b = temp[r]; N8]DzE0%  
for (i = l, j = r, k = l; k <= r; k++) { [I;C 6p  
if (a < b) { U|wST&rU|  
data[k] = temp[i++]; 2j f!o  
a = temp; ;CO qu#(  
} else { F=\ REq  
data[k] = temp[j--]; lz^Vi!|p  
b = temp[j]; G}U <^]c  
} B9(w^l$kZ|  
} #( .G;e;w  
} 4m~y%> &  
x(?Rm,  
/** E8C8kH]  
* @param data (XK,g;RoEn  
* @param l w,hm_aDq  
* @param i GwO`@-}E  
*/ .1(_7!m@  
private void insertSort(int[] data, int start, int len) { kTjn%Sn,  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;X}2S!7Ko  
} 1_7p`Gxt[/  
} 2K4Xu9-i:b  
} <v1H1'gv  
} Boj R"  
& n*ga$Q  
堆排序: SY95s  
"]3o93 3 D  
package org.rut.util.algorithm.support; 7a[6@  
p$"~v A .  
import org.rut.util.algorithm.SortUtil; !S~)U{SSK  
D)MFii1J~  
/** (jKqwVs.:  
* @author treeroot Az8b_:=  
* @since 2006-2-2 K0>;4E>B  
* @version 1.0 g Cp`J(2v:  
*/ kNP-+o  
public class HeapSort implements SortUtil.Sort{ Vc0j)3  
G/ si( LK  
/* (non-Javadoc) p*K #s1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H2iIBGu|L  
*/ k8G4CFg}wP  
public void sort(int[] data) { PY|zN|  
MaxHeap h=new MaxHeap(); ZQ"dAR/y  
h.init(data); I484c R2.  
for(int i=0;i h.remove(); 5VE=Oo#&  
System.arraycopy(h.queue,1,data,0,data.length); .BjWZj  
} B<~AUf*y  
wmpQF<  
private static class MaxHeap{ qKSR5 #  
iK2f]h  
void init(int[] data){ WiH8j$;xu  
this.queue=new int[data.length+1]; y%|Ez  
for(int i=0;i queue[++size]=data; aP(~l_  
fixUp(size); H-t$A, [  
} AK lr a$  
}  Z/Wf  
Wrbv<8}%c  
private int size=0; ke@OG! M/  
_9-;35D_  
private int[] queue; xJ#O|7N  
xTk6q*NvT^  
public int get() { ?taC !{  
return queue[1]; uv5NqL&  
} q'fOlq  
RJ'za1@z;b  
public void remove() { "r`2V-E  
SortUtil.swap(queue,1,size--); ?Kmz urG  
fixDown(1); NI/'SMj%  
} @Y,t]  
file://fixdown =Crl{Ax  
private void fixDown(int k) { *56j'FX  
int j; J_a2DM6d  
while ((j = k << 1) <= size) { 51% Rk,/o  
if (j < size %26amp;%26amp; queue[j] j++; *s, bz.[  
if (queue[k]>queue[j]) file://不用交换 nVlZ_72d  
break; 4]}d'x&  
SortUtil.swap(queue,j,k); yC@PMyE]  
k = j; H.hKh  
} "#36-  
} 4iSN.nxIZ  
private void fixUp(int k) { EqHToD I3  
while (k > 1) { Ag3+z+uS  
int j = k >> 1; LD{~6RP  
if (queue[j]>queue[k]) `4ga~Ch  
break; 0^L:`[W+  
SortUtil.swap(queue,j,k); |0^IX   
k = j; Tb^1#O  
} ?AO=)XV2  
} >q')%j  
fLRx{Nu  
} X'.l h#&  
?&6|imPE  
} ']Czn._  
O*2{V]Y @  
SortUtil: Lcg1X3$G  
/:-ig .YY  
package org.rut.util.algorithm; ; p+C0!B2  
eVj 8u  
import org.rut.util.algorithm.support.BubbleSort; o7gZc/?n  
import org.rut.util.algorithm.support.HeapSort; .$f0!` t  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8\)4waz$  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3Zz_wr6  
import org.rut.util.algorithm.support.InsertSort; sw$JY}Q8x  
import org.rut.util.algorithm.support.MergeSort; MB5V$toC  
import org.rut.util.algorithm.support.QuickSort; >!PM5%G  
import org.rut.util.algorithm.support.SelectionSort; mE+=H]`.p  
import org.rut.util.algorithm.support.ShellSort; PMiu "  
79Aa~+i'_  
/** Oo!]{[}7  
* @author treeroot kQ[23  
* @since 2006-2-2 Q=<&ew  
* @version 1.0 u3cg&lEgT  
*/ >7?Lq<H  
public class SortUtil { 0/fwAp  
public final static int INSERT = 1; F&k<P>k  
public final static int BUBBLE = 2; %YuFw|wO  
public final static int SELECTION = 3; 0m4#{^Y  
public final static int SHELL = 4; l7WZ" 6d  
public final static int QUICK = 5; ee<'j~{A  
public final static int IMPROVED_QUICK = 6; %}  
public final static int MERGE = 7; ](+u'8  
public final static int IMPROVED_MERGE = 8; q@mZ0D-  
public final static int HEAP = 9; @Us#c 7/  
Sw{rNzh%$  
public static void sort(int[] data) { C:!&g~{cKi  
sort(data, IMPROVED_QUICK); fX LsLh+~D  
} aTaL|&(  
private static String[] name={ }PMlG  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qc Xw -  
}; R{B5{~m>W@  
U~|)=+%O  
private static Sort[] impl=new Sort[]{ :p1_ij]ND  
new InsertSort(), qe uc^+P;  
new BubbleSort(), 98|1K>C  
new SelectionSort(), %@I= $8j  
new ShellSort(), ip|l3m$Mi  
new QuickSort(), =m;cy0))  
new ImprovedQuickSort(), HT_nxe`E  
new MergeSort(), %~<F7qB  
new ImprovedMergeSort(), mt *Dx  
new HeapSort() >)`*:_{  
}; KrTlzbw&p\  
.%\R L/  
public static String toString(int algorithm){ $-]9/Ct  
return name[algorithm-1]; u\K`TWb%  
} lo7>$`Q  
?+]   
public static void sort(int[] data, int algorithm) {  L$]Y$yv  
impl[algorithm-1].sort(data); 9:!V":8q  
} >(gbUW  
B .?@VF  
public static interface Sort { 4E$6&,\  
public void sort(int[] data); ?R@u'4yK  
} V4*/t#L/  
bM,%+9oz;  
public static void swap(int[] data, int i, int j) { Z%{`j!!p  
int temp = data; [Z[ p@Ux  
data = data[j]; 2"Ki5  
data[j] = temp; LD;! s  
} 7U)w\A;~  
} g s%[Cv  
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