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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。 Pa d)|  
插入排序: Ij4q &i"  
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package org.rut.util.algorithm.support; >>KI_$V  
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import org.rut.util.algorithm.SortUtil; xgIb6<qwY  
/** 8o|C43Q_  
* @author treeroot ;AOLbmb)H4  
* @since 2006-2-2 =bD.5,F)  
* @version 1.0 ya~;Of5  
*/ nsi? .c&0!  
public class InsertSort implements SortUtil.Sort{ Ojl X<y.  
E%v0@  
/* (non-Javadoc) [nVBnB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sv% E5@  
*/ 5<PNl~0  
public void sort(int[] data) { Sq,>^|v4&e  
int temp; #b428-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1ds4C:M+<  
} 4pT^ *  
} yD& Y`f#  
} y'^U4# (  
DQW)^j h  
} l([aKm#  
D )`(b  
冒泡排序: &\6},JN  
aeN #<M&$<  
package org.rut.util.algorithm.support; 9Xg7=(#  
FvVC 2Z  
import org.rut.util.algorithm.SortUtil; =Y|( }92  
Q+Q"JU  
/** $<)]~* *K  
* @author treeroot Rf`_q7fm  
* @since 2006-2-2 B$2GEg]Ri  
* @version 1.0 em,1Yn?  
*/ J7",fb  
public class BubbleSort implements SortUtil.Sort{ iQ Xlz] '  
O(%6/r`L,k  
/* (non-Javadoc) %Jh( 5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aG;F=e  
*/ H:hM(m0?q  
public void sort(int[] data) { D mi.@.  
int temp; Z HZxr  
for(int i=0;i for(int j=data.length-1;j>i;j--){ , 2#Q >  
if(data[j] SortUtil.swap(data,j,j-1); dO z|CfUhI  
} E]n]_{BN]  
} HEFgEYlO  
} T8g\_m  
} Ot47.z  
O6?{@l  
} IYq#|^)5+  
=C,DR4xh  
选择排序: %.`u2'^  
p({@t=L3g  
package org.rut.util.algorithm.support; sdO8;v>  
p : z ][I  
import org.rut.util.algorithm.SortUtil; #Swc>jYc  
0!YVRit\N  
/** Hl%Og$q3  
* @author treeroot fh)eL<I  
* @since 2006-2-2 E-Xz  
* @version 1.0 9[VYd '  
*/ ;0m J4G  
public class SelectionSort implements SortUtil.Sort { NX%1L! #  
6|q"lS*$S  
/* 6p)&}m9!  
* (non-Javadoc) J/Y9X ,  
* 55.2UN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PCaFG;}  
*/ L`<#vi  
public void sort(int[] data) { WGA&Lr  
int temp; 46)[F0,$r  
for (int i = 0; i < data.length; i++) { ?,riwDI 2  
int lowIndex = i; ;0kAm Vy  
for (int j = data.length - 1; j > i; j--) { V*s\~h)  
if (data[j] < data[lowIndex]) { nHbi{,3  
lowIndex = j; T=pP  
} _J \zj  
} U3B&3K} ~  
SortUtil.swap(data,i,lowIndex); "zNS6I?rzE  
} 2"a%%fv  
} l]&A5tz3  
3 $%#n*  
} w)S 4Xi=  
Lct_6?  
Shell排序: A3 TR'BFw-  
0B9FPpx?:  
package org.rut.util.algorithm.support; .4E24FB[f?  
:9 (kU  
import org.rut.util.algorithm.SortUtil; 8iD7K@  
viU}  
/** B=>Xr!pM!  
* @author treeroot lt4IoE`tk?  
* @since 2006-2-2 _z%\53h  
* @version 1.0 V+1c<LwT  
*/ r0k :RJP  
public class ShellSort implements SortUtil.Sort{ x1wD`r  
H(n fHp.3  
/* (non-Javadoc) S"Vr+x?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UGM:'xa<T  
*/ 9=iMP~?xF  
public void sort(int[] data) { d!<>Fh^6,  
for(int i=data.length/2;i>2;i/=2){ J|U~W kW  
for(int j=0;j insertSort(data,j,i); oq|o"n)~  
} \2El>>  
} r%=a:GdAg  
insertSort(data,0,1); AFsieJ  
} 6@# =z  
]6v7iuvI  
/** BR@gJ(2  
* @param data @(=?x:j  
* @param j qOpwl*?x+  
* @param i tOnOzD  
*/ /KnIU|;  
private void insertSort(int[] data, int start, int inc) { o-_,l J7o^  
int temp; *$VeR(QN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); '.pGkXyQ  
} ]5*H/8Ke7  
} -ys/I,}<  
} #gWok'ZcR  
rLD1Cpeb,w  
} @~$=96^  
KMb'm+  
快速排序: ;dZZOocV1  
2.);OFk+  
package org.rut.util.algorithm.support; 7?k3jDK  
W=S^t_F  
import org.rut.util.algorithm.SortUtil; ^o C>,%7  
qrOesSdc  
/** j3w~2q"r  
* @author treeroot ~IO'"h'w  
* @since 2006-2-2 U%1M?vT/  
* @version 1.0 $ta"Ug.z  
*/ h-Ks:pcR  
public class QuickSort implements SortUtil.Sort{ 1n2Pr'|s  
Bf^K?:r"V  
/* (non-Javadoc) ''9K(p6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Qnr0t@0  
*/ 2|exY>`w  
public void sort(int[] data) { m|?1HCRXRI  
quickSort(data,0,data.length-1); V0,5c`H c  
} {Gfsiz6  
private void quickSort(int[] data,int i,int j){ H 9/m6F  
int pivotIndex=(i+j)/2; JT6Be8   
file://swap Gz\wmH&rVz  
SortUtil.swap(data,pivotIndex,j); =Ldf#8J  
p|0SA=?k"  
int k=partition(data,i-1,j,data[j]); >3p8o@:  
SortUtil.swap(data,k,j); *hFJI9G  
if((k-i)>1) quickSort(data,i,k-1); UDk H'x$=  
if((j-k)>1) quickSort(data,k+1,j); +('xzW  
Xsb.xxK.  
} (Y&gse1}!  
/** ;gJAxVD<  
* @param data <|WXFjn  
* @param i 33}p02#  
* @param j 2}P{7flDY  
* @return g(jn /Cx  
*/ lnMU5[g{  
private int partition(int[] data, int l, int r,int pivot) { ="@f~~  
do{ nyhHXVRH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !L|VmLqa  
SortUtil.swap(data,l,r); CIwI1VR^  
} _,Q -)\  
while(l SortUtil.swap(data,l,r); i[33u p  
return l; Mp5Z=2l5  
} .Q</0*sp  
I A=\c  
} ]U4C2}u  
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改进后的快速排序: -DZ5nx  
j~Ci*'*L  
package org.rut.util.algorithm.support; DvI^3iG8  
<Z1m9O "sy  
import org.rut.util.algorithm.SortUtil; - t 4F  
\dB z-H'@  
/** ij_5=4aZ-  
* @author treeroot !YM:?%B  
* @since 2006-2-2 ~:0U.v_V  
* @version 1.0 *&_(kq z'1  
*/ |U~\;m@  
public class ImprovedQuickSort implements SortUtil.Sort { &u2m6 r>W  
r5lPO*?Df  
private static int MAX_STACK_SIZE=4096; Fkqw #s(T  
private static int THRESHOLD=10; Aba%QQQ  
/* (non-Javadoc) z+_d*\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [w  FK!?  
*/ _lH:%E*  
public void sort(int[] data) { @%MGLR{pH  
int[] stack=new int[MAX_STACK_SIZE]; qssK0!-  
^|h.B$_F,  
int top=-1; n;.);  
int pivot; 4Dd]:2|D  
int pivotIndex,l,r; /GNm>NSK  
O+DYh=m*p  
stack[++top]=0; T!&VT;   
stack[++top]=data.length-1; PC,I"l  
1NN#-U  
while(top>0){ &6\E'bBt  
int j=stack[top--]; A(C0/|#V  
int i=stack[top--]; +I.{y  
JVx-4?  
pivotIndex=(i+j)/2; (3m^@2i  
pivot=data[pivotIndex]; JAmpU^(C  
D|C!KF (  
SortUtil.swap(data,pivotIndex,j); )h%tEY$AJ  
Lp{uA4:=K  
file://partition !|,djo!N  
l=i-1; *u>[  
r=j; <{HV|B7  
do{ wX@g >(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~P-^An^  
SortUtil.swap(data,l,r); 8hX /~-H  
} SmP&wNHQf  
while(l SortUtil.swap(data,l,r); @Rqn&tA8  
SortUtil.swap(data,l,j); $C{-gx+:  
%F0.TR!!n  
if((l-i)>THRESHOLD){ 3qp\jh=FE  
stack[++top]=i; ^7`gf  
stack[++top]=l-1; vri<R8  
} ?j8_j  
if((j-l)>THRESHOLD){ YipL_&-  
stack[++top]=l+1; phcYQqR  
stack[++top]=j; {%Q+Pzl.  
} 7a%)/ )<D  
/ \k\HK8  
} u-wj\BU  
file://new InsertSort().sort(data); ^K'XlM`a  
insertSort(data); #/>OW2Ny  
} 2J6(TrQ  
/** s%l^zA(  
* @param data l.SoiFDd  
*/ Kl :x?"g)  
private void insertSort(int[] data) { SivJaY%  
int temp; 0{47TX*YX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w"h3e  
} KD..X~Me  
} =|3*Y0  
} T$Rf  
to] ~$~Q|>  
} Ij7[2V]c  
KA9v?_@{F  
归并排序: D;oX*`  
14 hE<u  
package org.rut.util.algorithm.support; ShU1RQk  
5k<0>6;XH  
import org.rut.util.algorithm.SortUtil; pJ@D}2u(  
'!XVz$C  
/** |)YN"nqg  
* @author treeroot YGCBDH%6  
* @since 2006-2-2 e:;u_ be~  
* @version 1.0 ^r 9  
*/ EUuk%<q7C(  
public class MergeSort implements SortUtil.Sort{ WQltUaF  
ggzcANCD<  
/* (non-Javadoc) @VKN6yHH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B d?{ldg  
*/ 3TnrPO1E  
public void sort(int[] data) { o;{BI Q1  
int[] temp=new int[data.length]; zHQSx7Ow 5  
mergeSort(data,temp,0,data.length-1); z7]GZF  
} /baSAoh/e  
67P@YL  
private void mergeSort(int[] data,int[] temp,int l,int r){ ~:"//%M3l  
int mid=(l+r)/2; KyRcZ"  
if(l==r) return ; /qPhptV  
mergeSort(data,temp,l,mid); ^qNr<Ye  
mergeSort(data,temp,mid+1,r); & ]1gx#  
for(int i=l;i<=r;i++){ 0{.[#!CSk  
temp=data; t|}}#Z!I[f  
} pn aSOyR  
int i1=l; /9@ VnM  
int i2=mid+1; iiTt{ab\Y  
for(int cur=l;cur<=r;cur++){ / #D R|  
if(i1==mid+1) Q;eY]l8  
data[cur]=temp[i2++]; "|d# +C  
else if(i2>r) p2(Z(V7*  
data[cur]=temp[i1++]; L<ET"&b;4  
else if(temp[i1] data[cur]=temp[i1++]; y3@5~4+  
else _ v3VUm#  
data[cur]=temp[i2++]; Hus.Jfam  
} uwWKsZ4:ij  
} \ H!Klp  
/ yTPb  
} KWi P`h8  
G Y+li {  
改进后的归并排序: {1J4Q[N9m  
#b$qtp!,  
package org.rut.util.algorithm.support; d&t,^Hj  
9 kLA57  
import org.rut.util.algorithm.SortUtil; yuq2)  
CjUYwAy$k  
/** &O^t]7  
* @author treeroot ^_G@a,  
* @since 2006-2-2 {Z^q?~zC[  
* @version 1.0 d2X?^  
*/ VqnM>||  
public class ImprovedMergeSort implements SortUtil.Sort { DN;3VT.-  
:r}C&3  
private static final int THRESHOLD = 10; ..UA*#%1  
-s9()K(vZG  
/* ^D A<=C-[!  
* (non-Javadoc) <^Jdl.G  
* |?4NlB6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .g!K| c  
*/ WM9z~z'2a  
public void sort(int[] data) { aBWA hn  
int[] temp=new int[data.length]; <j:@ iP  
mergeSort(data,temp,0,data.length-1); [Lq9lw&   
} _~O*V&  
!AN;  
private void mergeSort(int[] data, int[] temp, int l, int r) { t_jnp $1m  
int i, j, k; 3_ko=& B$  
int mid = (l + r) / 2; @IV,sz e  
if (l == r) % !Ih=DZ  
return; nfksi``Vq  
if ((mid - l) >= THRESHOLD) q@vqhE4  
mergeSort(data, temp, l, mid); N."x@mV  
else QAX3*%h  
insertSort(data, l, mid - l + 1); 1C(sBU"  
if ((r - mid) > THRESHOLD) x.Tulo0/  
mergeSort(data, temp, mid + 1, r); O2"5\@HfE  
else lESv  
insertSort(data, mid + 1, r - mid); Tb\<e3Te_  
YFP<^y=  
for (i = l; i <= mid; i++) { ~]SCf@pRk  
temp = data; k{D0&  
} G%viWWTY  
for (j = 1; j <= r - mid; j++) { zZ;V9KM>v  
temp[r - j + 1] = data[j + mid]; "v/Yw'! )  
} c&C*'c-r  
int a = temp[l]; LZ RP}|  
int b = temp[r]; ch33+~Nn  
for (i = l, j = r, k = l; k <= r; k++) { @D>qo=KPM  
if (a < b) { Uo;a$sR  
data[k] = temp[i++]; D~n-;T  
a = temp; aNP\Q23D  
} else { ik1asj1  
data[k] = temp[j--]; !6,rN_a@Y  
b = temp[j]; Wg,7k9I  
} 8*Ty`G&v  
} bjAI7B8As  
} n'[>h0  
<<R2 X1  
/** '}IGV`c  
* @param data NS-0-o|4#  
* @param l d:"7Tw2v+  
* @param i z_Hkw3?  
*/ |AS~sjWSJ  
private void insertSort(int[] data, int start, int len) { dh9@3. t  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~tn$AtK  
} H4W!Md  
} *W;;L_V"   
} 0s79rJ  
} r6GXmr  
=cO5Nt  
堆排序: X ]W)D S  
,4Q8r:_ u  
package org.rut.util.algorithm.support; &XCP@@T  
uQ|LkL%< ^  
import org.rut.util.algorithm.SortUtil; 41P0)o  
s\<UDW  
/** 2qojU%fiH  
* @author treeroot 6l T< lzT  
* @since 2006-2-2 6TTu[*0NT  
* @version 1.0 aRElk&M  
*/ 8!YQ9T[  
public class HeapSort implements SortUtil.Sort{  q*94vo-  
$41<ldJ  
/* (non-Javadoc) "?<(-,T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bh'!aipk  
*/ &xA>(|a\&-  
public void sort(int[] data) { vxOnv8(  
MaxHeap h=new MaxHeap(); (E7"GJ  
h.init(data); J% n#uUs  
for(int i=0;i h.remove(); l fF RqZ  
System.arraycopy(h.queue,1,data,0,data.length); @,7r<6E  
}  P_'{|M<?  
-v-kFzu  
private static class MaxHeap{ ![$`Ivro`  
;Yv{)@'Bc  
void init(int[] data){ JdLPIfI^  
this.queue=new int[data.length+1]; ^M%P43  
for(int i=0;i queue[++size]=data; ?PqkC&o[q  
fixUp(size); !#~KSO}zW2  
} Uk*(C(  
} v_Df+  
Z=Cw7E  
private int size=0; w>8kBQ?b  
&-{%G=5~e%  
private int[] queue; M$Bb,s  
QmSMDWkh  
public int get() { egBk7@Ko  
return queue[1]; ,|A6l?iV  
} ?@Q0;LG  
<T;V9(66  
public void remove() { *C0a,G4  
SortUtil.swap(queue,1,size--); 8EMBqhl  
fixDown(1); cvo+{u$s  
} K F_Uu  
file://fixdown tzfyS#E  
private void fixDown(int k) { B9[vv;lzu  
int j; ~cyKPg6  
while ((j = k << 1) <= size) {  ^#C+l  
if (j < size %26amp;%26amp; queue[j] j++; U;TS7A3  
if (queue[k]>queue[j]) file://不用交换 |vm-(HY!  
break; jSM`bE+"  
SortUtil.swap(queue,j,k); OI*ltba?  
k = j; Ly3!0P.<  
} d}tmZ*q  
} oV;sd5'LG  
private void fixUp(int k) { j`q>YPp  
while (k > 1) { DU8\1(  
int j = k >> 1; GF9[|). T  
if (queue[j]>queue[k]) \!30t1EZ  
break; $]Ix(7@W  
SortUtil.swap(queue,j,k); tu"-]^  
k = j; 3 !8#wn  
} (9ZW^flY  
} G_5{5Ar  
Y0kcxpK/  
} }!k?.(hpE  
9H;Os:"\|  
} }yn%_KQ0  
gK;dfrU.8Y  
SortUtil: qoH:_o8ClO  
{5D%<Te  
package org.rut.util.algorithm; aMGh$\Pg  
`GBJa k  
import org.rut.util.algorithm.support.BubbleSort; AzF*4x  
import org.rut.util.algorithm.support.HeapSort; & wtE"w  
import org.rut.util.algorithm.support.ImprovedMergeSort; m1j Eky(  
import org.rut.util.algorithm.support.ImprovedQuickSort; 7Hv 6>z#m  
import org.rut.util.algorithm.support.InsertSort; 2bLc57j{`9  
import org.rut.util.algorithm.support.MergeSort; d*e8P ep  
import org.rut.util.algorithm.support.QuickSort; qdwo2u  
import org.rut.util.algorithm.support.SelectionSort; EtPB_! +  
import org.rut.util.algorithm.support.ShellSort; EPLHw  
{fDRVnI?  
/** \p( 0H6  
* @author treeroot BeQ'\#q,  
* @since 2006-2-2 B Tj1C  
* @version 1.0 H_3Wx fO  
*/ W`JI/  
public class SortUtil { 1 oKY7i$  
public final static int INSERT = 1; f/Y7@y  
public final static int BUBBLE = 2; .sQV0jF{  
public final static int SELECTION = 3; r}e(MT:R'  
public final static int SHELL = 4; Q?LzL(OioN  
public final static int QUICK = 5; 7VZ^J`3  
public final static int IMPROVED_QUICK = 6; Z.Z31yF:f  
public final static int MERGE = 7; +mD;\iW]  
public final static int IMPROVED_MERGE = 8; :|S[i('  
public final static int HEAP = 9; E$4H;SN \  
B8T5?bl  
public static void sort(int[] data) { EXjR&"R  
sort(data, IMPROVED_QUICK); 5wh(Qdib  
} yx&}bu\  
private static String[] name={ 87B$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A{B$$7%  
}; e 2N F.  
/6[vF)&  
private static Sort[] impl=new Sort[]{ ]AM*9!  
new InsertSort(), 0vDvp`ie#4  
new BubbleSort(), roAHkI  
new SelectionSort(), 2B6u) 95  
new ShellSort(), *^7^g!=z2  
new QuickSort(), |}e"6e%  
new ImprovedQuickSort(), uEr.LCAS  
new MergeSort(), R\n@q_!`X  
new ImprovedMergeSort(),  PBW_9&d  
new HeapSort() 6tP!(  
}; n} !')r  
/Us+>vg!  
public static String toString(int algorithm){ | B$JX'_  
return name[algorithm-1]; *gGw/jA/  
} Lw^%<.DM+t  
QD^=;!  
public static void sort(int[] data, int algorithm) { pX3El$p  
impl[algorithm-1].sort(data); Sh-B!  
} Z ]ZUK  
^-s7>F`jx  
public static interface Sort { AVU'rsXA  
public void sort(int[] data); 2,B^OZmw  
} ~Ni-}p  
Wt!;Y,1 s  
public static void swap(int[] data, int i, int j) { imwn)]LR  
int temp = data; kn HrMD;  
data = data[j]; XAF]B,h=  
data[j] = temp; %jq R^F:J  
} [a$1{[|)  
} xOg|<Nnl  
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