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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>|"28y  
插入排序: O9*p0%ug  
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package org.rut.util.algorithm.support; S.hC$0vrj  
<m1sSghg  
import org.rut.util.algorithm.SortUtil; e?=elN  
/** n;qz^HXEJ  
* @author treeroot !-RwB@\  
* @since 2006-2-2 a2X h>{  
* @version 1.0 zAI|Jv @  
*/ 5[<F_"x  
public class InsertSort implements SortUtil.Sort{ OpqNEo\  
N8 M'0i?  
/* (non-Javadoc) 8f-:d]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;dOs0/UM&  
*/ @G(xaU'u  
public void sort(int[] data) { JCcQd 01z  
int temp; ~},~c:fF?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :d({dF_k;p  
} @>:i-5  
} df ?eL2v  
} 5m`[MBt2g  
^W}MM8 '  
} eJ:Yj ~X`<  
<A{y($  
冒泡排序: pn s+y  
1MV@5j  
package org.rut.util.algorithm.support; T`Ro)ORC#  
ob]dZ  
import org.rut.util.algorithm.SortUtil; ?[|hGR2L  
`#U ]iwW!  
/** 4,zvFH*AH  
* @author treeroot }! =U^A)  
* @since 2006-2-2 avBua6i'  
* @version 1.0 C#$6O8O  
*/ :A#+=O0\z  
public class BubbleSort implements SortUtil.Sort{ gY%&IHQ'  
gLx/w\l6  
/* (non-Javadoc) !EM#m@kZ{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cUsL 6y  
*/ 8T7f[?  
public void sort(int[] data) { G h=<0WaF=  
int temp; Vrg3{@$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JT#7yetk'  
if(data[j] SortUtil.swap(data,j,j-1); ^Xa*lR 3  
} O%VA)<  
} ^r4|{  
} iN`6xkY  
} 0 {,h.:  
V&R$8tpz  
} .HCaXFW  
R=Ymo.zs6  
选择排序: x5PPu/  
/6jGt'^U  
package org.rut.util.algorithm.support; tIp{},bQ^  
<N-=fad]  
import org.rut.util.algorithm.SortUtil; wI>h%y-%!  
gWi{\x8dt  
/** Ge0Lb+<G  
* @author treeroot =1/q)b,p)  
* @since 2006-2-2 qg)qjBQwA  
* @version 1.0 K9*IA@xL  
*/ u{P~zyx  
public class SelectionSort implements SortUtil.Sort { #!L%J<MX  
Q ]0r:i= .  
/* 5y}BCY2=/  
* (non-Javadoc) KqK9X  
* W\NG>t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hbH#Co~o4#  
*/ gg(k7e  
public void sort(int[] data) { (FG^UA#'  
int temp; *.3y2m,bZ  
for (int i = 0; i < data.length; i++) { vS#{-X  
int lowIndex = i; S?2YJ l8B  
for (int j = data.length - 1; j > i; j--) { zu C5@jy.x  
if (data[j] < data[lowIndex]) { m\?\6W k  
lowIndex = j; fzyzuS$  
} k{1b20  
} 3u4:l  
SortUtil.swap(data,i,lowIndex); Pr2;Kp  
} `$M etQ  
} 1xIFvXru  
Pfk{=y  
} wcl!S{  
p&uCp7]U  
Shell排序: x RB7lV*  
z 7@ 'CJ  
package org.rut.util.algorithm.support; E^82==R  
BJ2Q2W W  
import org.rut.util.algorithm.SortUtil; _)q4I(s*  
HGb.656r  
/** V>r j$Nc]  
* @author treeroot 5)8 .  
* @since 2006-2-2 0NrTJ R`  
* @version 1.0 &<@%{h@=  
*/ rXuAixu!t  
public class ShellSort implements SortUtil.Sort{ .c03}RTC^  
GeVc\$K-  
/* (non-Javadoc) @~hz_Nm@8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q8 4t9b  
*/ %^T!@uZr  
public void sort(int[] data) { rX:1_q`xA  
for(int i=data.length/2;i>2;i/=2){ x~nQm]@`h  
for(int j=0;j insertSort(data,j,i); 6}"lm]b  
} `[&v  
} (<n>EF#  
insertSort(data,0,1); =<TO"  
} Nv{eE<<6  
Xa)7`bp<  
/** {)@ j77P  
* @param data T*8_FR<  
* @param j  J(^ >?d'  
* @param i 69rwX"^  
*/ F46O!xb%  
private void insertSort(int[] data, int start, int inc) { l=,.iv=W  
int temp; 7pd$?=__I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _En]@xK3&  
} EL"4E',  
} Okk hP  
} !}y8S'Yjw  
98=XG1sQ@  
} 5"[y FmP*  
VSx%8IM+X  
快速排序: vmMV n-\#  
BJ"Ay@D*  
package org.rut.util.algorithm.support; Na-q%ru  
Up'."w_zE  
import org.rut.util.algorithm.SortUtil; XQ4dohGCP  
c_t7RWV}  
/** Y5Ft96o))x  
* @author treeroot roL}lM$  
* @since 2006-2-2 I51M}b,[d  
* @version 1.0 [rc'/@L  
*/ UJ O]sD`i  
public class QuickSort implements SortUtil.Sort{ 0:s8o@}  
g:;Ya?5N  
/* (non-Javadoc) !\3 }R25  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o%$<LaQG5  
*/ =>P_mPP=  
public void sort(int[] data) {  5=*@l  
quickSort(data,0,data.length-1); )\(lg*?:  
} 6NU8HJp  
private void quickSort(int[] data,int i,int j){ X4XFu  
int pivotIndex=(i+j)/2; e W9)@nVJ  
file://swap ~ >4@;  
SortUtil.swap(data,pivotIndex,j); t&8<k+m  
G[vUOEU ~O  
int k=partition(data,i-1,j,data[j]); Z"4VH rA  
SortUtil.swap(data,k,j); zV6AuUIt  
if((k-i)>1) quickSort(data,i,k-1); |3aS17yL>  
if((j-k)>1) quickSort(data,k+1,j); J6= w:c  
1k*n1t):  
} MM=W9#  
/** 5f/@: ~  
* @param data }rFThI  
* @param i w/hh 4ir  
* @param j 3x,Aczb  
* @return 4S^  
*/ "9TxK6  
private int partition(int[] data, int l, int r,int pivot) { @"jmI&hYn  
do{ nl.~^CP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S$ Ns8=  
SortUtil.swap(data,l,r); =ZFcxGo  
} X+/{%P!w  
while(l SortUtil.swap(data,l,r); 2Zv,K-G  
return l; Mr#oT?  
} ScM} m  
V+P8P7y37B  
} {hlT` K  
'O!Z:-qE  
改进后的快速排序: X}_QZO=z  
TJeou# =/  
package org.rut.util.algorithm.support; "cIGNTLFA  
mjWp8i  
import org.rut.util.algorithm.SortUtil; g%@]z8L  
fQ2!sV  
/** GZxglU,3T  
* @author treeroot ;a#}fX  
* @since 2006-2-2 i=,B88ko  
* @version 1.0 ~ra#UG\Y8  
*/ Q=)"om  
public class ImprovedQuickSort implements SortUtil.Sort { e);bF>.~  
K7)j  
private static int MAX_STACK_SIZE=4096; ,Zf :R  
private static int THRESHOLD=10; Y*]l|)a6_]  
/* (non-Javadoc) MoC*tImWR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) > u'/$ k  
*/ 9_g>BI;"8  
public void sort(int[] data) { dqIZ#;:g  
int[] stack=new int[MAX_STACK_SIZE]; S7@ZtFf  
GGFar\ EzW  
int top=-1; !7kAJG g  
int pivot; :Vu7,o  
int pivotIndex,l,r; IMl9\U  
b(+w.R(+Ti  
stack[++top]=0; ,%"\\#3S  
stack[++top]=data.length-1; g~bf!  
BH.:_Qrbh[  
while(top>0){ ^bZ<9}  
int j=stack[top--]; k~'?"'  
int i=stack[top--]; l}U~I 3}).  
z7NGpA(  
pivotIndex=(i+j)/2; FZe N,  
pivot=data[pivotIndex]; LAu+{'O\  
3fbD"gL  
SortUtil.swap(data,pivotIndex,j); 3n}s CEt=  
*DPTkMQN  
file://partition zLJ:U`uh\  
l=i-1; H]T2$'U6  
r=j; R#[QoyJ  
do{ Res"0Q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e/m'a|%:  
SortUtil.swap(data,l,r); muqfSF  
} N3S,33 8s  
while(l SortUtil.swap(data,l,r); Yc. ~qmG/z  
SortUtil.swap(data,l,j); -eSPoZ  
R{2GQB  
if((l-i)>THRESHOLD){ "-~D! {rS  
stack[++top]=i; s>9z+;~!  
stack[++top]=l-1; %l9WZ*yZ`2  
} X r  
if((j-l)>THRESHOLD){ _oMs `"4K  
stack[++top]=l+1; 5JXzfc9rL  
stack[++top]=j; 7(nz<z p  
} <:kTTye|  
]$XBd{\D{  
} cNuuzA  
file://new InsertSort().sort(data); '6d D^0dZ  
insertSort(data); xv(xweV+d  
} softfjl&l  
/** '.}6]l  
* @param data s)`1Rf  
*/ g4.'T51  
private void insertSort(int[] data) { 2>_brz|7:|  
int temp; IlC:dA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 32)&;  
} h0Sy'] 3m  
} &K}(A{  
} .SRuyioF&  
Le#E! sU  
} )ZQ9a4%  
3^iQe"P%a@  
归并排序: l1iF}>F2  
"p6:ekw  
package org.rut.util.algorithm.support; RT_Pd\(qD  
tnKpn-LPA  
import org.rut.util.algorithm.SortUtil; 7-G'8t  
709Uv5  
/** t?#vb}_  
* @author treeroot JQ{zWJlt  
* @since 2006-2-2 Hc_hO  
* @version 1.0 J _[e9  
*/ R"\u b"]  
public class MergeSort implements SortUtil.Sort{ C&d"#I  
9L)&n.t1  
/* (non-Javadoc) r-\T}e2Gz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # ZYid t  
*/ ;?HZ,"^I  
public void sort(int[] data) { AT'_0> x8  
int[] temp=new int[data.length]; dWq/)%@t  
mergeSort(data,temp,0,data.length-1); )W}/k$S  
} ]B-$p p  
.$ P2W0G  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^S;RX*  
int mid=(l+r)/2; J}Z_.:JO(w  
if(l==r) return ; DbNi;m  
mergeSort(data,temp,l,mid); A aF5`  
mergeSort(data,temp,mid+1,r); kgbr+Yw2X  
for(int i=l;i<=r;i++){ YCLD!S/?  
temp=data; Z%HEn$t  
} lJz?QI1  
int i1=l; YVg}q#  
int i2=mid+1; Dry;$C}P  
for(int cur=l;cur<=r;cur++){ Oa_o"p<Lr  
if(i1==mid+1) -<}>YtB Q  
data[cur]=temp[i2++]; O( 5L2G  
else if(i2>r)  <*6y`X  
data[cur]=temp[i1++]; 61Iy{-/ZV  
else if(temp[i1] data[cur]=temp[i1++]; >I8hFtAM  
else 65`'Upu  
data[cur]=temp[i2++]; @qr3v>3X<  
} E't G5,/m  
} lo]B 5_en  
~"<VUJ=Ly:  
} p?`|CE@h7  
L_zmU_zD  
改进后的归并排序: [Yahxw}  
j5VRv$P  
package org.rut.util.algorithm.support; lWyP[>*  
^6NABXL  
import org.rut.util.algorithm.SortUtil; w]5f3CIm  
MF`k~)bDV  
/** pTV@nP  
* @author treeroot &T{B~i3w8  
* @since 2006-2-2 R82Zr@_  
* @version 1.0 3 Q%k (,  
*/ e5/ DCz  
public class ImprovedMergeSort implements SortUtil.Sort {  =R24 h  
w2C!>fJ]1  
private static final int THRESHOLD = 10; _%p9 B#X<>  
/CQQ^/  
/* @ vYN7  
* (non-Javadoc) E.Q} \E  
* Z :i"|;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (+Nmio  
*/ 8IIdNd  
public void sort(int[] data) { !=Kay^J~.  
int[] temp=new int[data.length]; x ;?1#W  
mergeSort(data,temp,0,data.length-1); 4[V6so0  
} *d,n2a#n5  
d(B;vL@R2V  
private void mergeSort(int[] data, int[] temp, int l, int r) { \z2hXT@D  
int i, j, k; ~JmxW;|_x)  
int mid = (l + r) / 2; \g6 # MNW  
if (l == r) O@(.ei*HJ!  
return; }${ZI  
if ((mid - l) >= THRESHOLD) ALt";8Oa  
mergeSort(data, temp, l, mid); eiSO7cGy  
else d8q$&(]<  
insertSort(data, l, mid - l + 1); fjZveH0  
if ((r - mid) > THRESHOLD) zvs 2j"lb  
mergeSort(data, temp, mid + 1, r); wb Tg  
else N+@@EOmH  
insertSort(data, mid + 1, r - mid); nF[eb{GR`  
Z a y'/b  
for (i = l; i <= mid; i++) { qA_DQ):  
temp = data; /:L&uqA  
} cZK?kz_Y  
for (j = 1; j <= r - mid; j++) { n,'AFb4AF  
temp[r - j + 1] = data[j + mid]; ="TOa"Zk  
} "BNmpP  
int a = temp[l]; >_% g8T'  
int b = temp[r]; 3z. >b  
for (i = l, j = r, k = l; k <= r; k++) { g8 *|" {  
if (a < b) { o!dkS/u-m  
data[k] = temp[i++]; = Ow&UI  
a = temp; :7;Iy u  
} else { p{#7\+}  
data[k] = temp[j--]; 3eDx@8N }  
b = temp[j]; ?*5l}y=  
} /n}V7  
} /<Nt$n  
} =&G|} M  
7Sv5fLu2  
/** @3= < wz<  
* @param data xMGd'l?  
* @param l `2U/O .rV  
* @param i 3Eux-C!t  
*/ E0x$;CG!  
private void insertSort(int[] data, int start, int len) { qpH-P8V   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (Jr;:[4XC  
} Oes+na'^  
} u= i^F|  
} 2&f=4b`Z  
} 5GpKX  
~SUl,Cs  
堆排序: ^?0,G>I%-  
IHMyP~{  
package org.rut.util.algorithm.support;  2x J5  
>\Pj(,'  
import org.rut.util.algorithm.SortUtil; c oz}VMp  
]OUOL/J  
/** X)+sHcE~#  
* @author treeroot vPq\reKe  
* @since 2006-2-2 XD>@EYN<X  
* @version 1.0 1pr_d"#4  
*/ ;rdLYmmx^  
public class HeapSort implements SortUtil.Sort{ qk"=nAJX  
&otgN<H9  
/* (non-Javadoc) HpC4$JMm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }u)G ERWO  
*/ *\+ 'tFT6  
public void sort(int[] data) { ;lt;]7  
MaxHeap h=new MaxHeap(); j[eEyCW[)  
h.init(data); pjn%CR`;  
for(int i=0;i h.remove(); Mo=-P2)>lt  
System.arraycopy(h.queue,1,data,0,data.length); srA~gzF  
} !{0!G  
z,P7b]KVe  
private static class MaxHeap{ 4hz,F/ I  
?m^7O_1  
void init(int[] data){ p=T\3_q  
this.queue=new int[data.length+1]; c$z_Zi!g#  
for(int i=0;i queue[++size]=data; LJ#P- `!{&  
fixUp(size); "Jd1&FsCwX  
} 2DQC)Pe+z  
} ![n`n(oN  
KO"iauW  
private int size=0; ) O^08]Y g  
e5]0<s$  
private int[] queue; 7FFYSv,[:  
}7v2GfEkM  
public int get() { a5&j=3)|  
return queue[1]; 6&T1 ZY`  
} #XPU$=  
#| Po&yu4R  
public void remove() { +rX,Sl`/  
SortUtil.swap(queue,1,size--); U#4W"1~iX  
fixDown(1); %;J`dM  
} DF =. G1  
file://fixdown W=w@SO_?wp  
private void fixDown(int k) { ylJlICK  
int j; K`<P^XJr  
while ((j = k << 1) <= size) { GUX X|W[6  
if (j < size %26amp;%26amp; queue[j] j++; xFnMXh t  
if (queue[k]>queue[j]) file://不用交换 F,:VL*.5kJ  
break; sl 5wX  
SortUtil.swap(queue,j,k); +w5?{J  
k = j; 2>s;xZ@/'R  
} s1q d/  
} ?A>-_B  
private void fixUp(int k) { vX%gcs/@  
while (k > 1) { 95&HsgdxJ  
int j = k >> 1; ']D( ({%g  
if (queue[j]>queue[k]) `,"Jc<R7Z  
break; 56dl;Z)  
SortUtil.swap(queue,j,k); Z;:-8 HPDY  
k = j; tDkqwF),  
} `#bcoK5  
} WI3!?>d  
)]R8 $S  
} Y8(yOVy9  
39CPFgi<l*  
} zYsGI<4  
q[ZYlF,Ho  
SortUtil: }J`Gm  
j!rz@Y3  
package org.rut.util.algorithm; )-oNy-YL  
Sm5"Q  
import org.rut.util.algorithm.support.BubbleSort; \266N;JrN  
import org.rut.util.algorithm.support.HeapSort; #>'0C6Xn  
import org.rut.util.algorithm.support.ImprovedMergeSort; /-lmfpT  
import org.rut.util.algorithm.support.ImprovedQuickSort; Rz]bCiD3 B  
import org.rut.util.algorithm.support.InsertSort; -9EbU7>!  
import org.rut.util.algorithm.support.MergeSort; m|[ Hhw=f  
import org.rut.util.algorithm.support.QuickSort; |/$#G0X;H  
import org.rut.util.algorithm.support.SelectionSort; 3u<2~!sR  
import org.rut.util.algorithm.support.ShellSort; cs)hq4-L`  
zx*f*L,6F  
/** ?1sY S  
* @author treeroot [R$4n-$  
* @since 2006-2-2 fBmx +7  
* @version 1.0 #s%$kYp 1  
*/ QWEK;kUa@  
public class SortUtil { :08UeEy  
public final static int INSERT = 1; Iq*7F5B  
public final static int BUBBLE = 2; S"l&=J2dc  
public final static int SELECTION = 3; teb(\% ,  
public final static int SHELL = 4; >qla,}x  
public final static int QUICK = 5; dXhV]xK  
public final static int IMPROVED_QUICK = 6; aHw VoT  
public final static int MERGE = 7; f?QD##~;  
public final static int IMPROVED_MERGE = 8; !Fi)-o  
public final static int HEAP = 9; {Bx\Z0+'&  
hSmM OS{  
public static void sort(int[] data) { gqG"t@Y+  
sort(data, IMPROVED_QUICK); !O*n6}nPE  
} $[Ns#7K  
private static String[] name={ .:}\Z27-c  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !=pemLvH  
}; Zh$Z$85p  
~7v^7;tT  
private static Sort[] impl=new Sort[]{ whshjl?a  
new InsertSort(), 2Xosj(H  
new BubbleSort(), Rk<:m+V=  
new SelectionSort(), ( _2eiE71  
new ShellSort(), tq[C"| dH  
new QuickSort(), #@ G2n@Hj  
new ImprovedQuickSort(), }V{, kK  
new MergeSort(), iVRz  
new ImprovedMergeSort(), 'J}lnt[V  
new HeapSort() 9 +6"<r!  
}; _" n4SXhq  
|Cm}%sgR\0  
public static String toString(int algorithm){ (@zn[ Nq  
return name[algorithm-1]; TocqoYX{{  
} k6XO-a f  
X'Oo ogu  
public static void sort(int[] data, int algorithm) { 2B# \683  
impl[algorithm-1].sort(data); %o-*~GQ@B  
} D c^d$gh  
h!.(7qdd  
public static interface Sort { {|cA[#j#  
public void sort(int[] data); Tn|re Xc0e  
} v|e>zm <  
I`|>'$E[r  
public static void swap(int[] data, int i, int j) { Ua4} dW[w  
int temp = data; 1D$k:|pP~  
data = data[j]; 8cHZBM7'  
data[j] = temp; iZ UBw  
} Y:wds=lA  
} a[/p(O  
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