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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。 5!7vD|6  
插入排序: N#7_)S[@0l  
]H=P(Z -  
package org.rut.util.algorithm.support; \-I)dMm[  
;;n=(cM|z  
import org.rut.util.algorithm.SortUtil; IYB;X  
/** }r:8w*4 7  
* @author treeroot ~D! Y] SK  
* @since 2006-2-2 K?,`gCN}v  
* @version 1.0 Hv|(V3-  
*/ {fu[&@XV  
public class InsertSort implements SortUtil.Sort{ *jo1?  
)iCg,?SSw=  
/* (non-Javadoc) V-z F'KI[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :*)b<:4  
*/ k1;Jkq~  
public void sort(int[] data) { Ct}rj-L<i  
int temp; 3E:+DF-Z\  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r%^XOw<'  
} l ?gh7m_ej  
} t++\&!F  
} %YI!{  
hVu~[ 'Me  
} $lf\1)B~*  
/V!gF+L  
冒泡排序: zl["}I(*n  
+ )*aS+  
package org.rut.util.algorithm.support; hV"2L4/E  
dhI+_z   
import org.rut.util.algorithm.SortUtil; mbZ g2TTy  
)LE#SGJP  
/** ~,reS:9RZ  
* @author treeroot 2%t!3F:  
* @since 2006-2-2 vmT6^G  
* @version 1.0 a1A3uP  
*/ 4mF=A$Q_/  
public class BubbleSort implements SortUtil.Sort{ 8!Q0:4Vb  
QlWkK.<Z3_  
/* (non-Javadoc) ?+y# t?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pt8#cU\  
*/ q'<K$4_,%  
public void sort(int[] data) { gPr&9pHU  
int temp; $ iU~p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o1 @. <Q+}  
if(data[j] SortUtil.swap(data,j,j-1); }7/Ob)O  
} &^@IAjxn  
} Y'M}lv$sa  
} j:'!P<#  
} '2c4 4F)i  
w}Xy;0c  
} ,ikn%l#cm  
/BfCh(B  
选择排序: z;[Z'_B  
3|.KEJC"  
package org.rut.util.algorithm.support; C'CdVDm X  
{$^Lb4O[V  
import org.rut.util.algorithm.SortUtil; /R)(u@jk  
vA, tW,  
/** "AMsBvzgo  
* @author treeroot s h^&3}  
* @since 2006-2-2 5 }F6s  
* @version 1.0 kNTxYJ  
*/ R3} Z"  
public class SelectionSort implements SortUtil.Sort { Qv:J#uVw?O  
m4kUA"n5  
/* K6z-brvw "  
* (non-Javadoc) VWcR@/3  
* 9 A1w5|X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O,!4 W\s  
*/ AC/82$  
public void sort(int[] data) { )ia$pe s  
int temp; d#wK  
for (int i = 0; i < data.length; i++) { Vr%!rQ  
int lowIndex = i; cy4V*zwp  
for (int j = data.length - 1; j > i; j--) { fIcra  
if (data[j] < data[lowIndex]) { X P_ V  
lowIndex = j; ]; G$~[  
} pM7xnL4  
} ' 8bT9  
SortUtil.swap(data,i,lowIndex); B=J/HiwV)  
} Bc2PF;n  
} [P"R+$"   
LjA>H>8%[  
} h;sdm/  
pM'AhzS  
Shell排序: Og3bV_,"  
(_O_zu8_  
package org.rut.util.algorithm.support; 5T;,wQ<  
cE0Kvqe`  
import org.rut.util.algorithm.SortUtil; Ok2>%e  
YC0FXNV  
/** *FEY"W+bY  
* @author treeroot 9Fm><,0'u  
* @since 2006-2-2 2d Px s:8&  
* @version 1.0 "Crm\UI6  
*/ dLI`\e<r&[  
public class ShellSort implements SortUtil.Sort{ bAqaf#}e  
iv62Fs'  
/* (non-Javadoc) gAgP("  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gr?[s'Ze  
*/ (~FLG I  
public void sort(int[] data) { H Ql_ /:Wx  
for(int i=data.length/2;i>2;i/=2){ #s'  
for(int j=0;j insertSort(data,j,i); fr<, LC.  
} 9K F`9Y  
} $di8#O*  
insertSort(data,0,1); S\O6B1<:  
} z!6:Dt6^  
p6'wg#15  
/** |J#mgA}(  
* @param data d^.fB+)A3  
* @param j (l3P<[[?  
* @param i &D 4Ci_6k  
*/ _GK3]F0  
private void insertSort(int[] data, int start, int inc) { kGSB6  
int temp; H:HJHd"W  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `Dco!ih  
} kf<5`8  
} * F T )`  
} 13nXvYo'  
"m:4e`_dz  
} D*R49hja{  
?"[h P=3J  
快速排序: I5J9,j  
icPg<>TQ  
package org.rut.util.algorithm.support; X4R+Frt8  
} 6Uw4D61  
import org.rut.util.algorithm.SortUtil; p7;/| ]o3  
|VL(#U  
/** IL]VY1'#  
* @author treeroot D,rs)  
* @since 2006-2-2 &L S&O  
* @version 1.0 LGm>x  
*/ -a[] #v9  
public class QuickSort implements SortUtil.Sort{ &m6x*i-5\f  
75V?K  
/* (non-Javadoc) uE6;;Ir#mF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WurpHOJt+  
*/ @ 0RB.-  
public void sort(int[] data) { zU9G: jH  
quickSort(data,0,data.length-1); Q7 Clr{&  
} C  +%&!Q  
private void quickSort(int[] data,int i,int j){ =wW3Tr7~  
int pivotIndex=(i+j)/2; ![BQ;X  
file://swap [J|)DUjt  
SortUtil.swap(data,pivotIndex,j); THM\-abz  
u9*}@{,  
int k=partition(data,i-1,j,data[j]); v@0lTl_  
SortUtil.swap(data,k,j); 0/."R ;  
if((k-i)>1) quickSort(data,i,k-1); ;_lEu" -  
if((j-k)>1) quickSort(data,k+1,j); x_oL~~@  
< g<Lf[n$  
} 0} UJP   
/** _/_1:ivY8  
* @param data ;$y(Tvd;  
* @param i ec4jiE  
* @param j 7lvUIc?krW  
* @return I9`R L Sn  
*/ Oop;Y^gG}  
private int partition(int[] data, int l, int r,int pivot) { <<da TQV  
do{ H3"[zg9L:a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); n#G I& U  
SortUtil.swap(data,l,r); ^ )Lh5   
} Xh/i5}5 t  
while(l SortUtil.swap(data,l,r); ?[K+Ym+  
return l; pH%cbBm  
} Ab <4F 7  
-k p~p e*T  
} *@q+A1P7@  
-BNlZgk-^  
改进后的快速排序: QJ`#&QRp  
y#AwuC K  
package org.rut.util.algorithm.support; o?f7_8fG  
G"= tQ$ZU  
import org.rut.util.algorithm.SortUtil; ai(<"|(  
U/2g N H  
/** Vs~^r>  
* @author treeroot HV`{YuP  
* @since 2006-2-2 -}m#uUqI  
* @version 1.0 *=1;HN3  
*/ &t +   
public class ImprovedQuickSort implements SortUtil.Sort { |#x;}_>7  
.[hQ#3)W  
private static int MAX_STACK_SIZE=4096; %:n1S]Vr  
private static int THRESHOLD=10; 6rEt!v #K[  
/* (non-Javadoc) {6v|d{V+e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /vl]Oa&U  
*/ {R7>-Y[4)2  
public void sort(int[] data) { nu] k<^I5|  
int[] stack=new int[MAX_STACK_SIZE]; ={?}[E  
OYJy;u3"  
int top=-1; {_1^ GIIS  
int pivot; ,P ?TYk  
int pivotIndex,l,r; -&#L4AM%(9  
w0Fi~:b  
stack[++top]=0; 8u$Kr q  
stack[++top]=data.length-1; ,epKt(vl  
{}?s0U$5  
while(top>0){ 22\Buk}?  
int j=stack[top--]; FDaHsiI:  
int i=stack[top--]; AC=cz!3iB  
Ru Q\H0pr  
pivotIndex=(i+j)/2; p;:tzH\l  
pivot=data[pivotIndex]; 2*Uwp; 0  
O`O{n_o^u  
SortUtil.swap(data,pivotIndex,j); f- pt8  
:<=!v5 SK  
file://partition X-! yi  
l=i-1; ~1pJQ)!zlq  
r=j; 0\g;^Zpi  
do{ e_+`%A+-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cI4%z eR  
SortUtil.swap(data,l,r); _=jc%@]1y  
} J"8bRp=/|  
while(l SortUtil.swap(data,l,r); e| (jv<~r  
SortUtil.swap(data,l,j); hA?j"y0?  
sJX/YGHt  
if((l-i)>THRESHOLD){ -gh',)R   
stack[++top]=i; l!\C"f1o,  
stack[++top]=l-1; %*<k5#Yq  
} <pGPuw|~I  
if((j-l)>THRESHOLD){ g# :|Mjgh  
stack[++top]=l+1; []0`>rVq  
stack[++top]=j; 6hYv  
} StWDNAf)  
%4cUa| =?  
} )$yqJ6y5  
file://new InsertSort().sort(data); geWis(#J  
insertSort(data); =/J4(#Xb  
} ]Ole#Lz}Q  
/** /`0*!sN*5  
* @param data a=k+:=%y  
*/ XZuJ<]}X,  
private void insertSort(int[] data) { a=gTGG"9  
int temp; z-uJ+SA  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zzuDI_,/  
} 1j6ZSE/*|  
} <\?ySto  
} Wt"@?#L  
aZ2liR\QE  
} ?)1h.K1}M  
4pkc9\  
归并排序: F&;g< SD  
skdSK7 n  
package org.rut.util.algorithm.support; ppVjFCv0<  
BgD;"GD*W  
import org.rut.util.algorithm.SortUtil; h|dVVCsN  
jgYUS@}  
/** p*W4^2(d  
* @author treeroot u.0Z)j}N  
* @since 2006-2-2 {gl-tRC3  
* @version 1.0 ][:6En}  
*/ _x z_D12  
public class MergeSort implements SortUtil.Sort{ E3.=|]W'  
JJ ,Fh .  
/* (non-Javadoc) 0F`@/C1y55  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E@"+w,x)  
*/ AZorzQ]s  
public void sort(int[] data) { u~Q0V J~  
int[] temp=new int[data.length]; B8Jev\_  
mergeSort(data,temp,0,data.length-1); tQ'E"u1  
} Iqe4O~)  
%B3E9<9>U  
private void mergeSort(int[] data,int[] temp,int l,int r){  ;e()|  
int mid=(l+r)/2; 88d0`6K-9  
if(l==r) return ; y ']>J+b0  
mergeSort(data,temp,l,mid); H0 km*5Sn  
mergeSort(data,temp,mid+1,r); gnNMuqt  
for(int i=l;i<=r;i++){ V8NNIS  
temp=data; Vfp{7I$#6"  
} u7fae$:&  
int i1=l; y .S0^  
int i2=mid+1; A2uSH@4  
for(int cur=l;cur<=r;cur++){ XV)ej>A-V  
if(i1==mid+1) t3 *2Z u  
data[cur]=temp[i2++]; d4[M{LSl  
else if(i2>r) 0Apdhwk~  
data[cur]=temp[i1++]; @pYAqX2  
else if(temp[i1] data[cur]=temp[i1++]; )#T(2A  
else ]&yO>\MgJB  
data[cur]=temp[i2++]; Mmbb}(<  
} SYB } e  
} %#02Z%?%  
bU=!~W5  
} -'&MT :L  
0fXdE ;M3  
改进后的归并排序: kE,~NG9P  
qUx!-DMY  
package org.rut.util.algorithm.support; ep3_G\m  
N|z-s  
import org.rut.util.algorithm.SortUtil; joAR;J  
wz9V)_V*  
/** sJ7r9 O`x  
* @author treeroot YQ 4;X8I`r  
* @since 2006-2-2 xRP#}i:m  
* @version 1.0 9,82Uta  
*/ ??aOr*%  
public class ImprovedMergeSort implements SortUtil.Sort { <QugV3e  
!a ~>;+  
private static final int THRESHOLD = 10; d'kQE_y2.  
tu6c!o,@  
/* z++*,2F  
* (non-Javadoc) . CLiv  
* C:_!zY'z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @&S4j]rq  
*/ r=s ,Ath  
public void sort(int[] data) { oA"t`,3  
int[] temp=new int[data.length]; 4NQS'*%D  
mergeSort(data,temp,0,data.length-1); E4HG`_cWb  
} u\ytiGO*  
+T [0r  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5X|=qZ  
int i, j, k; I^[R]Js  
int mid = (l + r) / 2; /o.wCy,J<  
if (l == r) E[Tz%x=P  
return; Z%N{Y x(  
if ((mid - l) >= THRESHOLD) G!8O*4+A  
mergeSort(data, temp, l, mid); IpoZ6DB$  
else |Ag~k? QC  
insertSort(data, l, mid - l + 1); 7sC$hm]  
if ((r - mid) > THRESHOLD) &rorBD 5aj  
mergeSort(data, temp, mid + 1, r); be$wG O=Ts  
else E3_e~yu&  
insertSort(data, mid + 1, r - mid); 6*S|$lo9B  
^uMy|d  
for (i = l; i <= mid; i++) { 9 vmH$  
temp = data; xFHc+m' m~  
} ;f^.7|  
for (j = 1; j <= r - mid; j++) { I/Hwf  
temp[r - j + 1] = data[j + mid]; O!hg@[\B+  
} p` B48TW  
int a = temp[l]; 'vhgR2/  
int b = temp[r];  |UZ#2  
for (i = l, j = r, k = l; k <= r; k++) { ]B:g<}5$4  
if (a < b) { p;"pTGoW i  
data[k] = temp[i++]; R4_4FEo  
a = temp; w-AF5%gX  
} else { ?2 u_E "  
data[k] = temp[j--]; Gz+Bk5#{  
b = temp[j]; z(:0@5  
} zn_InxR  
} %njX'7^u  
} uPsn~>(4  
a/NmM)  
/** DCPK1ql  
* @param data S3MMyS8  
* @param l G{knO?BK  
* @param i 3:PBVt=  
*/ iJZqAfG{m?  
private void insertSort(int[] data, int start, int len) { ZQD_w#0j  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }wC pr.@  
} T3@wNAAU  
} $`i$/FE  
} b~Y$!fc  
} fk5!/>X  
R KFz6t  
堆排序: % rRYT8  
m_W\jz??k  
package org.rut.util.algorithm.support; ipQJn_:2  
wlAlIvIT  
import org.rut.util.algorithm.SortUtil; 8%_XJyg  
[kt!\-  
/** 9Y&n$svB  
* @author treeroot  fv5'Bl  
* @since 2006-2-2  w+=>b  
* @version 1.0 rG:IS=  
*/ *%:p01&+  
public class HeapSort implements SortUtil.Sort{ ZC_b`q<  
c;xL.  
/* (non-Javadoc) d}EGI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;zy k  
*/ 1U;je,)  
public void sort(int[] data) { |[>`3p"&  
MaxHeap h=new MaxHeap(); |n \HxU3  
h.init(data); (8?t0}#t  
for(int i=0;i h.remove(); W|NzdxCY  
System.arraycopy(h.queue,1,data,0,data.length); X)e6Y{vO  
} N0O8to}V  
6;dQ#wmg  
private static class MaxHeap{ $LRvPan`  
-w1U /o.  
void init(int[] data){ _UT>,c;h  
this.queue=new int[data.length+1]; Dq)V] Zx  
for(int i=0;i queue[++size]=data; UAFl+d!  
fixUp(size); vd|PTHV_  
} R61.!ql%w  
} ctTg-J2.  
V()s! w  
private int size=0; <*V%!pwIG  
yH;=Y1([  
private int[] queue; ``nuw7\C:  
x>A(016:C  
public int get() { /1zi(z   
return queue[1]; }N]|zCEj  
} R 3TdQ6j  
7Y&W^]UZ0t  
public void remove() { r,(rWptf4  
SortUtil.swap(queue,1,size--); T\:Vu{|  
fixDown(1); rZLTai}`>  
} |_&vW\  
file://fixdown KqG:o+V=  
private void fixDown(int k) { J/>Y mi,  
int j; =5 l7{i*`  
while ((j = k << 1) <= size) { :;cKns0OA  
if (j < size %26amp;%26amp; queue[j] j++; = 7d{lK  
if (queue[k]>queue[j]) file://不用交换 "a6[FqTs  
break; \sEq r)\k  
SortUtil.swap(queue,j,k); SQDllG84E  
k = j; 3V?JX5X\  
} ]{jdar^  
} 1\z5[ _  
private void fixUp(int k) { 1.+0=M[h  
while (k > 1) { 3lcd:=  
int j = k >> 1; Z `sM(?m  
if (queue[j]>queue[k]) \hai  
break; 8~YhT]R=  
SortUtil.swap(queue,j,k); a[Ah  
k = j; vR.=o*!%  
} fW~r%u .y  
} 4:.yE|@h[  
{u{n b3/jl  
} U$Z)v1&{  
mHrt)0\_  
} KhIg  
L9M0vkgri  
SortUtil: ;{[&&qMwU  
wHq*)7#h#  
package org.rut.util.algorithm; >B<jR$`6@  
W&#Ps6)8  
import org.rut.util.algorithm.support.BubbleSort; pUutI|mt/  
import org.rut.util.algorithm.support.HeapSort; g VX  
import org.rut.util.algorithm.support.ImprovedMergeSort; y!&6"l$K]  
import org.rut.util.algorithm.support.ImprovedQuickSort; &<2~7?$!  
import org.rut.util.algorithm.support.InsertSort; lQj3# !1}  
import org.rut.util.algorithm.support.MergeSort; R*VRxQ,h6+  
import org.rut.util.algorithm.support.QuickSort; 87l(a,#J  
import org.rut.util.algorithm.support.SelectionSort; 62TWqQ!9d  
import org.rut.util.algorithm.support.ShellSort; kG@~;*;l  
9dn~nnd'n  
/** Jz(wXp  
* @author treeroot btoye \ rl  
* @since 2006-2-2 {&nL'R  
* @version 1.0 uDvZ]Q|.  
*/ ~,3+]ts='\  
public class SortUtil { o *)>aw  
public final static int INSERT = 1; L}5nq@Uu)  
public final static int BUBBLE = 2; .xo#rt9_"=  
public final static int SELECTION = 3; LfOXgn\  
public final static int SHELL = 4; !LB#K?I  
public final static int QUICK = 5; ;)].Dj9  
public final static int IMPROVED_QUICK = 6;  G`8i{3:  
public final static int MERGE = 7; m%hI@'  
public final static int IMPROVED_MERGE = 8; d#xi_L!  
public final static int HEAP = 9; _Cn[|E  
luXcr H+w  
public static void sort(int[] data) { 0`VA} c  
sort(data, IMPROVED_QUICK); Mhp6,JL  
} 3]"RaI4Q0  
private static String[] name={ V<:scLm#OF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" wXI6KN-  
}; $L%gQkz_  
t1"-3afe  
private static Sort[] impl=new Sort[]{ cc`+rD5I-  
new InsertSort(), V_+XZ+7Lx}  
new BubbleSort(), }GI8p* ]o=  
new SelectionSort(), -7{qTe {  
new ShellSort(), 9>?3FMKdY  
new QuickSort(), )RV.N}NU  
new ImprovedQuickSort(), <*k]Aa3y  
new MergeSort(), uU_lC5A|  
new ImprovedMergeSort(), ;%wQnhg  
new HeapSort() 6+`+$s0  
}; _=l8e-6r  
3"afrA  
public static String toString(int algorithm){ d h5%  
return name[algorithm-1]; /`$9H|  
} C]H'z  
o+Cd\D69S  
public static void sort(int[] data, int algorithm) { W C z+  
impl[algorithm-1].sort(data); ip.aM#  
} ${fJ]  
En-BT0o  
public static interface Sort { (Klvctoy  
public void sort(int[] data); =, kH(rp2  
} >wx1M1  
f4{O~?=  
public static void swap(int[] data, int i, int j) { <E/"v  
int temp = data; wP:ab  
data = data[j]; yvN;|R  
data[j] = temp; gLp7<gx6  
} vu7F>{D  
} .$&_fUY  
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