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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。 @;t6Slc"~  
插入排序: =;(y5c  
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package org.rut.util.algorithm.support; AMre(lgh  
6%a:^f]  
import org.rut.util.algorithm.SortUtil; t.pn07$  
/** ?rxq//S2  
* @author treeroot W )jtTC7  
* @since 2006-2-2 LTw.w:"J  
* @version 1.0 ~-f"&@){,  
*/ 5 >\~jf  
public class InsertSort implements SortUtil.Sort{ svvl`|n%  
sd&^lpH  
/* (non-Javadoc) 2Y~nU(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2bu>j1h  
*/ !:wA\mAd  
public void sort(int[] data) { W 9!K~g_  
int temp; |*( R$tX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?egZkg=U  
} ?/q\S  
} KBa ]s q_  
} t.Yf8Gy  
YkSHJ{ >  
}  &4{!5r  
Q 6n!u;  
冒泡排序: Qs,4PPEg  
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package org.rut.util.algorithm.support; kRqe&N e  
k}] M`ad  
import org.rut.util.algorithm.SortUtil; ]$i@^3`[w  
+_1sFH`  
/** HCw,bRxm  
* @author treeroot l5/gM[0_7  
* @since 2006-2-2 an2Yluc;  
* @version 1.0 <q&4Y+b  
*/ 8d7 NESYl  
public class BubbleSort implements SortUtil.Sort{ Y_<-.?jf  
G8&/I c  
/* (non-Javadoc) ^^B~v<uK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ly#jl5wmT  
*/ I-^C6~  
public void sort(int[] data) { yoH,4,!G  
int temp; MML=J~1  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .(99f#2M:  
if(data[j] SortUtil.swap(data,j,j-1); Wv||9[Rd  
}  &2bqL!k  
} r+k g$+%b  
} [\qclW;L  
} saTS8p z  
^yX>^1  
} S,x';"  
K /$-H#;N  
选择排序: 82iFk`)T  
U$ 46=F|  
package org.rut.util.algorithm.support; H?rCIS0  
)|/%]@` N  
import org.rut.util.algorithm.SortUtil; k [LV^oEg  
7,zE?KG /  
/** m}7Nu  
* @author treeroot U;j\FE^+>  
* @since 2006-2-2 adPd}rt;  
* @version 1.0 ( k,?)  
*/ fejC ,H4I  
public class SelectionSort implements SortUtil.Sort { JvK]EwR ;  
y,/i3^y#_  
/* 2;(+]Ad<  
* (non-Javadoc) BOWBD@y  
* %/ctt_p0x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wr5v-_7r,  
*/ t3h){jZ  
public void sort(int[] data) { #qFY`fVf1  
int temp; je5[.VTM  
for (int i = 0; i < data.length; i++) { AvPPsN0  
int lowIndex = i; '4SDAa2f  
for (int j = data.length - 1; j > i; j--) { f!{@{\  
if (data[j] < data[lowIndex]) { K:^0*5Y-k  
lowIndex = j; 7WwE] ^M  
} Cv}^]_`Q  
} uaz!ze+  
SortUtil.swap(data,i,lowIndex);  6']HmM  
} r?IBmatK/  
} tt#dO@G#Fe  
^,#m y<{  
} Svb>s|D  
uovv">Uw  
Shell排序: >,E^ R`y  
v+I-*,R  
package org.rut.util.algorithm.support; =~k c7f{  
9?8PMh.  
import org.rut.util.algorithm.SortUtil; b+|3nc!  
tU5uL.( O  
/** dt^h9I2O  
* @author treeroot fvcS=nRQv  
* @since 2006-2-2 |JP19KFx'B  
* @version 1.0 7Y R|6{@  
*/ z~ywFk}KGd  
public class ShellSort implements SortUtil.Sort{ R|v'+bv  
H]pI$t3~  
/* (non-Javadoc) FJ-H ;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XbqMWQN*  
*/ ]8}51y8  
public void sort(int[] data) { yu)^s!UY;  
for(int i=data.length/2;i>2;i/=2){ AYgXqmH~+  
for(int j=0;j insertSort(data,j,i); fCwE1r*^  
} DU0/if9.  
} .] sJl  
insertSort(data,0,1); ^lAM /  
} TS#[[^!S  
Z&Ciy n  
/** |K"Q>V2y  
* @param data <S041KF.{6  
* @param j h%krA<G9  
* @param i t* =[RS*  
*/ ,/D}a3JD  
private void insertSort(int[] data, int start, int inc) { s4~[GO6>  
int temp; 5,pNqXRp  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G$>QH-p  
} Aeb(b+=  
} #3QPcoxa  
} j/z=<jA  
!R"W2Z4h  
} d<6F'F^w.7  
NS~;{d \  
快速排序: )63 $,y-;$  
L%T(H<G  
package org.rut.util.algorithm.support; {]< G=]'  
Y @p<f5[c  
import org.rut.util.algorithm.SortUtil; a:fP  
`o JQA$UD  
/** {aUnOyX_  
* @author treeroot A^>@6d $2  
* @since 2006-2-2 ];OvV ,*  
* @version 1.0 -2M~KlYl  
*/ 5e /YEDP  
public class QuickSort implements SortUtil.Sort{ C/!.VMl^  
YV<y-,Io  
/* (non-Javadoc) #wI}93E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j#1G?MF  
*/ "`$,qvNN  
public void sort(int[] data) { OG/b5U  
quickSort(data,0,data.length-1); H#~gx_^U  
} "lI-/ G  
private void quickSort(int[] data,int i,int j){ Io1j%T#ZT  
int pivotIndex=(i+j)/2; %_ibe  
file://swap jYHnJ}<  
SortUtil.swap(data,pivotIndex,j); *nCA6i  
QB*,+u4  
int k=partition(data,i-1,j,data[j]); dFm_"135  
SortUtil.swap(data,k,j); % i4 5  
if((k-i)>1) quickSort(data,i,k-1); 2.D2 o  
if((j-k)>1) quickSort(data,k+1,j); ABN4kM>%  
tk&AZb,sP  
} 566!T_  
/** _MBhwNBxZ  
* @param data y9r4]45  
* @param i >}+{;d  
* @param j fg^AEn1i  
* @return #ibwD:{  
*/ UK ':%LeL  
private int partition(int[] data, int l, int r,int pivot) {  ]n!V  
do{ Mu\V3`j  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3~~X,ZL  
SortUtil.swap(data,l,r); H9mNnZ_k  
} rH3U;K!  
while(l SortUtil.swap(data,l,r); CO wcus  
return l; LwC?t3n  
} 1dQAo1  
;@wa\H[3v2  
} V<QpC5  
)|~&(+Q?]  
改进后的快速排序: x MJ-=  
O[ma% E*0  
package org.rut.util.algorithm.support; J,=K1>8s  
>C0B!MT?3%  
import org.rut.util.algorithm.SortUtil; 7Qd4L.  
$*C }iJsF  
/** h4hAzFQ.s  
* @author treeroot 3:,%># "  
* @since 2006-2-2 JtFq/&{i  
* @version 1.0 8<VDp Y  
*/ '12m4quO  
public class ImprovedQuickSort implements SortUtil.Sort { uw+nll*W%  
ht -'O"d:  
private static int MAX_STACK_SIZE=4096; ;jzJ6~<  
private static int THRESHOLD=10; 2*cNd}qr  
/* (non-Javadoc) | .jWz.c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y=XDN:  
*/ 0~nX7  
public void sort(int[] data) { V^s, 3C  
int[] stack=new int[MAX_STACK_SIZE]; MXA?rjd0  
(Y~/9a4X  
int top=-1; $O|Xq7dp  
int pivot; C6e5*S  
int pivotIndex,l,r; ozOc6  
{QEvc  
stack[++top]=0; T!x/^  
stack[++top]=data.length-1; @1j*\gYz  
> )4~,-;k  
while(top>0){ ( #dR\Di  
int j=stack[top--]; jZ~girA  
int i=stack[top--]; o6u^hG6~'  
Mc?_2<u-  
pivotIndex=(i+j)/2; 3Dr\ O_`u  
pivot=data[pivotIndex]; )v(rEY  
"-:H$  
SortUtil.swap(data,pivotIndex,j); rO}1E<g (  
%p\ ~  
file://partition Aw7N'0K9UN  
l=i-1; R&!;(k0  
r=j; %g?M?D8Ud3  
do{ v} !lx)#  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %RW*gUvc]  
SortUtil.swap(data,l,r); (\qf>l+*  
} `@y~JNf!  
while(l SortUtil.swap(data,l,r); TFHYB9vV  
SortUtil.swap(data,l,j); @kSfF[4H  
ZKI8x1>Iq  
if((l-i)>THRESHOLD){ Q%6zr9  
stack[++top]=i; r;@0 F  
stack[++top]=l-1; =bp'5h8_  
} /%g@ ;  
if((j-l)>THRESHOLD){ ~vYFQKrb  
stack[++top]=l+1; EuHQp7  
stack[++top]=j; );HhV,$n  
} z^wod  
p4uzw  
} U>n[R/~]  
file://new InsertSort().sort(data); V'b4wO1RV  
insertSort(data); M[985bl  
} ~JRq :  
/** ;Q t%>Uo8  
* @param data @CM5e!  
*/ KEy8EB  
private void insertSort(int[] data) { 5Y;&L!T  
int temp; hvI#D>Z!Yp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7oC8I D  
} SEnr"}  
} }>iNT.Lvd  
} e=##X}4zZ  
$$$[Vn_H<  
} SOPair <r  
hc W>R  
归并排序: $mT)<N ;w  
/pRv i>_(:  
package org.rut.util.algorithm.support; eSZ':p  
zn/>t-Bc  
import org.rut.util.algorithm.SortUtil; ,]t_9B QK  
T Q![  
/** Lt~&K$t7~  
* @author treeroot #)L}{mHLM-  
* @since 2006-2-2 E\}A<r  
* @version 1.0 _*z ^PkH  
*/ +L=Xc^  
public class MergeSort implements SortUtil.Sort{ E 6#/@C,  
\hBzQ%0  
/* (non-Javadoc) y.( <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gDJ} <^  
*/ InL_JobE8r  
public void sort(int[] data) { SP<(24zdd  
int[] temp=new int[data.length]; IPTFx )]G  
mergeSort(data,temp,0,data.length-1); `#ff`j|a  
} B3yTN6-  
GsO(\hR6^  
private void mergeSort(int[] data,int[] temp,int l,int r){ |)d%3s\  
int mid=(l+r)/2; pcIS}+L  
if(l==r) return ; 2asRJ97qES  
mergeSort(data,temp,l,mid); tW!*W?  
mergeSort(data,temp,mid+1,r); ?}KD<R  
for(int i=l;i<=r;i++){ J>M9t%f@  
temp=data; \>9^(N  
} l_;6xkv4  
int i1=l; 3{qB<*!p"G  
int i2=mid+1; "C3J[) qC  
for(int cur=l;cur<=r;cur++){ X!{K`~DRX  
if(i1==mid+1) Y9-F\t=~  
data[cur]=temp[i2++]; e1b?TF@lz  
else if(i2>r) Q e/XEW  
data[cur]=temp[i1++]; +P 9eE,WR  
else if(temp[i1] data[cur]=temp[i1++]; {\k }:)  
else B&7:=t,m(  
data[cur]=temp[i2++]; !Mgo~h"]#  
} eU)QoVt  
} G]$EIf'  
6pb~+=3n  
} R@uA4Al  
)zy ;!  
改进后的归并排序: <l!:#u  
tZx}/&m-  
package org.rut.util.algorithm.support; /V cbT >=  
}Z\S__\9  
import org.rut.util.algorithm.SortUtil; *qYw  
)n<p_vz  
/** o&M.9V?~~  
* @author treeroot _PGd\>Ve  
* @since 2006-2-2 W!"QtEJ,  
* @version 1.0 V$FZVG/@#  
*/ NB44GP1-@  
public class ImprovedMergeSort implements SortUtil.Sort { [zq2h3r  
T#6g5Jnsp  
private static final int THRESHOLD = 10; Kwm_Y5`A  
CY.92I@S  
/* S~H>MtX(<  
* (non-Javadoc) SXe1Q8;  
* __+8wC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <_k A+&T  
*/ QrFKjmD<  
public void sort(int[] data) { Y^DGnx("m  
int[] temp=new int[data.length]; 3.P7GbN  
mergeSort(data,temp,0,data.length-1); Xf"< >M  
} 1he5Zevm}  
"1XTgCu\  
private void mergeSort(int[] data, int[] temp, int l, int r) { )/[L)-~y~  
int i, j, k; XM"Qs.E  
int mid = (l + r) / 2; j[mII5e7g  
if (l == r) |c2sJyj*  
return; x)Zm5&"Gg  
if ((mid - l) >= THRESHOLD) p{v*/<.;  
mergeSort(data, temp, l, mid); Zl'/Mx g  
else Dk$<fMS,7c  
insertSort(data, l, mid - l + 1); @vib54G  
if ((r - mid) > THRESHOLD) R i,_x  
mergeSort(data, temp, mid + 1, r); (GGosXU-v  
else *_J{_7pwe  
insertSort(data, mid + 1, r - mid); _<F;&(o  
N^wHO<IO 1  
for (i = l; i <= mid; i++) { =j~:u.hc'  
temp = data; o%`=+- K  
} 'Q 7^bF^  
for (j = 1; j <= r - mid; j++) { 8sBT&A6&j  
temp[r - j + 1] = data[j + mid]; ,uNJz-B8  
} dIh+h|:  
int a = temp[l]; g]N'6La  
int b = temp[r]; 4^YE*6z  
for (i = l, j = r, k = l; k <= r; k++) { cX4]ViXSr  
if (a < b) { K1R?Qt,qDF  
data[k] = temp[i++]; 9c*B%A8J  
a = temp; ")txFe  
} else { 9LBZMQ  
data[k] = temp[j--]; Dm}M8`|X  
b = temp[j]; zkqn>  
} F#) bGi  
} ~#P]NWW%.  
} fI<d&5&g  
]91QZ~4a  
/** UU[z\^w| E  
* @param data .p o,.}  
* @param l &Ruq8n<  
* @param i mvTp,^1  
*/ Jd v;+HN[  
private void insertSort(int[] data, int start, int len) { '3sySsD&O  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $%'3w~h`  
} vGPsjxk&  
} #639N9a~  
} dS <*DP  
} d+5~^\lV  
8HZ+r/j  
堆排序: x H=15JY1W  
d:^B2~j  
package org.rut.util.algorithm.support; H[OgnnM  
IoK/2Gp  
import org.rut.util.algorithm.SortUtil; <-N2<s l  
uifVSf*  
/** xYW &Mfka  
* @author treeroot zA.0Sm  
* @since 2006-2-2 53a^9  
* @version 1.0 j!%^6Io4  
*/ U1lqg?KO  
public class HeapSort implements SortUtil.Sort{ h9}*_qc&kV  
mW{>  
/* (non-Javadoc) W\w#}kY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4*E5@{D  
*/ fn5-Tnsq*  
public void sort(int[] data) { nP*%N|0  
MaxHeap h=new MaxHeap(); N#-pl:J(  
h.init(data); 1 JIU5u)  
for(int i=0;i h.remove(); ?Y S 3)  
System.arraycopy(h.queue,1,data,0,data.length); >}O}~$o  
} v*dw'i  
:Y1;= W  
private static class MaxHeap{ '6>*J  
esx/{j;<u  
void init(int[] data){ SZ$WC8AX  
this.queue=new int[data.length+1]; v3XM-+Z4  
for(int i=0;i queue[++size]=data; z,^~H  
fixUp(size); ) < U9  
} )7 8T+7Kq  
} ]cmX f  
uZ JfIC<>  
private int size=0; iI7ocyUv  
h4F%lGot  
private int[] queue; 3/Z>W|w#w  
ez*QP|F*9  
public int get() { /T(9:1/G  
return queue[1]; > l0H)W  
} #qDm)zCM  
!d!u{1Y&  
public void remove() { pPo xx"y  
SortUtil.swap(queue,1,size--); yzzJKucVU:  
fixDown(1); YC56] Zp  
} 4G&dBH  
file://fixdown iT,7jd?6#  
private void fixDown(int k) { $YcB=l  
int j; w( XZSE  
while ((j = k << 1) <= size) { SUUN_w~  
if (j < size %26amp;%26amp; queue[j] j++; 3z2 OW@zL$  
if (queue[k]>queue[j]) file://不用交换 6(4d3}F  
break; *x;4::'Jn  
SortUtil.swap(queue,j,k); :N$-SV  
k = j; r-.@MbBm  
} nM b@  B  
} l$EN7^%w  
private void fixUp(int k) { "opMS/a"7  
while (k > 1) { dpNERc5  
int j = k >> 1; S5y.H  
if (queue[j]>queue[k]) zhFm2  
break; fbOqxF"?we  
SortUtil.swap(queue,j,k); ) =29Hm"  
k = j; 2@GizT*mA  
} ^rP]B-)  
} Km%L1Cd]  
MsP6C)dz  
} wB \`3u4  
}$L63;/H  
} }(ORh2Ri  
"z3rH~q72  
SortUtil: NId.TaXh  
5h6o}  
package org.rut.util.algorithm; )rG4Nga5}  
PzNPwd  
import org.rut.util.algorithm.support.BubbleSort; G--X)h-  
import org.rut.util.algorithm.support.HeapSort; 15<? [`:6  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y-YuY  
import org.rut.util.algorithm.support.ImprovedQuickSort; [p`5$\e  
import org.rut.util.algorithm.support.InsertSort; \'*M }G  
import org.rut.util.algorithm.support.MergeSort; K SO D(  
import org.rut.util.algorithm.support.QuickSort; x6s|al  
import org.rut.util.algorithm.support.SelectionSort; l&qCgw  
import org.rut.util.algorithm.support.ShellSort; _"yA1D0d_  
e}d(.H%l0  
/** u ij^tN%  
* @author treeroot Cg]),S  
* @since 2006-2-2 Im/tU6ybV  
* @version 1.0 uu,F5<y[  
*/ ZqVbNIY   
public class SortUtil { 'OziP  
public final static int INSERT = 1; =huV(THU  
public final static int BUBBLE = 2; .)!QsBU  
public final static int SELECTION = 3; *$NZi*z3  
public final static int SHELL = 4;  xV5UaD<  
public final static int QUICK = 5; y3s+.5;  
public final static int IMPROVED_QUICK = 6; IyyBW2  
public final static int MERGE = 7; p,$N-22a  
public final static int IMPROVED_MERGE = 8; tMiIlf!>p  
public final static int HEAP = 9; bP 9ly9FH  
#T^2=7 w  
public static void sort(int[] data) { y-1e(:GF  
sort(data, IMPROVED_QUICK); *<($.c  
} ^1bslCe   
private static String[] name={ Kx] SiejJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >{IPt]PCn  
}; r%ES#\L6+|  
~&73f7  
private static Sort[] impl=new Sort[]{ "/i$_vl  
new InsertSort(), - Fbp!*. u  
new BubbleSort(), TD}<U8I8_  
new SelectionSort(), 'YNdrvz  
new ShellSort(), 1" cv5U  
new QuickSort(), 1w^wa_qx  
new ImprovedQuickSort(), fj5 g\m  
new MergeSort(), qM(}|fMbN  
new ImprovedMergeSort(), k*hl"oL"X  
new HeapSort() lZcNio  
}; UPfO;Z`hJ  
s.}K?)mH  
public static String toString(int algorithm){ 2(xC|  
return name[algorithm-1]; E s5: S#  
} 'Be'!9K*d  
`)n4I:)2  
public static void sort(int[] data, int algorithm) { Pj-INc96  
impl[algorithm-1].sort(data); :/;/mHG]  
} EE!}$qOR  
[!A[oK9i C  
public static interface Sort { :-k|jt  
public void sort(int[] data); `R[ZY!=+  
} &&X,1/  
,JV0ib,  
public static void swap(int[] data, int i, int j) { RU:Rt'  
int temp = data; e /JQ #A  
data = data[j]; %x$U(I}  
data[j] = temp; y~ =H`PAE  
} `um,S  
} ^hC'\09=c  
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