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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。 @/i{By^C  
插入排序: 3OTq  
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package org.rut.util.algorithm.support; z%5i^P  
"&Ym(P  
import org.rut.util.algorithm.SortUtil; }8J77[>/  
/** T ) T0.c  
* @author treeroot ?-[.H^]s~  
* @since 2006-2-2 'eg?W_zu  
* @version 1.0 JVE]Qb_  
*/ 8 &:  *<  
public class InsertSort implements SortUtil.Sort{ bv ,_7UOG  
?<VahDBS+A  
/* (non-Javadoc) f@Mm{3&.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V4'G%!NY  
*/ ,y@` =  
public void sort(int[] data) { i3g;B?54  
int temp; 9NLO{kN  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {FyGh */  
} nsk`nck  
} Tx"}]AyB6  
} <Okk;rj2  
<_&tP=h  
} zB`)\  
e{@TR x  
冒泡排序: H~x,\|l#  
qYZ\< h^  
package org.rut.util.algorithm.support; r168ft?c  
|Z}uN!Jm  
import org.rut.util.algorithm.SortUtil; Jx[Z[RO2  
o mstJ9  
/** Ga0= G&/  
* @author treeroot #"% ]1={b  
* @since 2006-2-2 \Ku6 gEy  
* @version 1.0 C=2"*>lTn  
*/ 4Sv&iQ=vh  
public class BubbleSort implements SortUtil.Sort{ ,p6X3zY  
[X[d`@rXv  
/* (non-Javadoc) k r2V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |u,2A1  
*/ 7Fb |~In<Z  
public void sort(int[] data) { 8_WFSF^  
int temp; >Z ZX]#=I  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0kP, Zj<  
if(data[j] SortUtil.swap(data,j,j-1); &qqS'G*  
} Uv'.]#H<  
} GW a_^  
} "QA <5P  
} u (V4KUk  
AA34JVm]  
} RbUBKMZ U  
+` g&J  
选择排序: Z7?C^m  
7Wub@Mp  
package org.rut.util.algorithm.support; 6( TG/J  
<*u[<  
import org.rut.util.algorithm.SortUtil; _uU}J5d.  
~3 4Ly  
/** ]5b%r;_  
* @author treeroot %IGcn48J  
* @since 2006-2-2 lgp-/O"T  
* @version 1.0 biFy*+|  
*/ F<y$Q0Z}  
public class SelectionSort implements SortUtil.Sort { j2NnDz'  
o =)hUr  
/* I8 Ai_^P  
* (non-Javadoc) mf]1mG})  
* 513{oM:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g@]G [(  
*/ +4 U?*:n  
public void sort(int[] data) { T. nY>Q8  
int temp; {X$8yy2zC5  
for (int i = 0; i < data.length; i++) { 16=tHo8|  
int lowIndex = i; Z"rrbN1  
for (int j = data.length - 1; j > i; j--) { G\3@QgyQ  
if (data[j] < data[lowIndex]) { |,rIB  
lowIndex = j; 7@"J&><w!  
} !l1UpJp  
} `oH=O6  
SortUtil.swap(data,i,lowIndex); Qm86!(eZ-  
} m/l#hp+  
} ,&$=2<Dx  
9qxB/5d_  
} w]Z*"B&h  
E?san;K u  
Shell排序: g2p/#\D\J  
</0@7  
package org.rut.util.algorithm.support; !IlsKMZ  
a!YpSFr  
import org.rut.util.algorithm.SortUtil;  mD`v>L  
*ZP$dQ  
/** cSy{*K{B  
* @author treeroot d;UP|c>2  
* @since 2006-2-2 KO/Z|I  
* @version 1.0 I_xvg >i  
*/ 4A(kM}uRB  
public class ShellSort implements SortUtil.Sort{ 1+6)0 OH{  
3}{od$3G  
/* (non-Javadoc) Yg@k +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7,U^v}$   
*/ S(xlN 7=  
public void sort(int[] data) { +$R4'{9q  
for(int i=data.length/2;i>2;i/=2){ t.Hte/,k  
for(int j=0;j insertSort(data,j,i); {w*5uI%%e  
} e\%emp->  
} |#^##^cF/  
insertSort(data,0,1); |f+|OZY  
} Lk{ES$  
pj?wQ'  
/** z^s/7Va[  
* @param data J WaI[n}  
* @param j u2crL5^z2)  
* @param i sCG[gshq  
*/ 5*QNE!  
private void insertSort(int[] data, int start, int inc) { w yi n  
int temp; _(=[d  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w_o|k&~,  
} P)bS ;w\(Y  
} f4Aevh:  
} uN1(l}z$  
1I< <`7'  
} 3_k.`s_Z  
2L}F=$zz  
快速排序: kc#<Gr&Z&  
'lwLe3.c  
package org.rut.util.algorithm.support; h">L>*Wfx  
hkOhY3K5  
import org.rut.util.algorithm.SortUtil; W8hf  Qpw  
y ;W|)  
/** *`D(drnT{  
* @author treeroot YU! SdT$  
* @since 2006-2-2 ZZ/F}9!=  
* @version 1.0 <n+?7`d,  
*/ )Zx;Z[  
public class QuickSort implements SortUtil.Sort{ #P[d?pY  
oJ}!qrrH  
/* (non-Javadoc) Qu4Bd|`(k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) et[n;nl>V  
*/ 6`(x)Q9  
public void sort(int[] data) { w6ZyMR,T  
quickSort(data,0,data.length-1); Y>v(UU  
} bs{i@1$  
private void quickSort(int[] data,int i,int j){ !ER,o_T<  
int pivotIndex=(i+j)/2; nl v8HC  
file://swap Ubtu?wRBW  
SortUtil.swap(data,pivotIndex,j); n^Co  
uA#uq^3  
int k=partition(data,i-1,j,data[j]); :ryyo$  
SortUtil.swap(data,k,j); 3q7Z?1'o  
if((k-i)>1) quickSort(data,i,k-1); CjW`cHd  
if((j-k)>1) quickSort(data,k+1,j); LU$aCw5 B;  
C4vmgl&  
} 3|1ug92  
/** $#q:\yQsPC  
* @param data \ZSZ(p#1  
* @param i q1C) *8*g  
* @param j ry bs9:_}  
* @return YK(I '  
*/ ]P lD e8  
private int partition(int[] data, int l, int r,int pivot) { ,khB*h14;h  
do{ t+C9QXY  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 72J@Dc  
SortUtil.swap(data,l,r); Y`$dtg {  
} A UCk]  
while(l SortUtil.swap(data,l,r); !*Hgl\t6a  
return l; M=vRy|TL  
} 3q +C8_:  
a%R'x]  
} M6yzqAh  
[QC<u1/"K  
改进后的快速排序: x4@v$phyH  
d1MY>zq  
package org.rut.util.algorithm.support; Z/#l~.o[  
)a:j_jy  
import org.rut.util.algorithm.SortUtil; _ U/[n\oC  
U;%I" p`Z/  
/** 8WT^ES~C  
* @author treeroot .Z[Bz7  
* @since 2006-2-2 px`o.%`'  
* @version 1.0 9ure:Dko(Y  
*/ j,@N0~D5  
public class ImprovedQuickSort implements SortUtil.Sort { []opPQ 1  
Vaj4p""\F  
private static int MAX_STACK_SIZE=4096; a~#MMl  
private static int THRESHOLD=10; ci]IH]x  
/* (non-Javadoc) 6$42 -a%b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~nul[>z  
*/ !VNLjbee.  
public void sort(int[] data) { 8^/V2;~^,>  
int[] stack=new int[MAX_STACK_SIZE]; uK_Q l\d  
ssdpwn'  
int top=-1; mM*jdm(!  
int pivot; cT8b$P5w  
int pivotIndex,l,r; R4xoc;b  
rLt`=bl&&U  
stack[++top]=0; ED9uKp<Wbv  
stack[++top]=data.length-1; rgth2y]  
Iud]*5W  
while(top>0){ )TYrb:M'm  
int j=stack[top--]; E: EXp7  
int i=stack[top--]; 6Xu^ cbD  
<>!Y[Xr^  
pivotIndex=(i+j)/2; 8&q|*/2  
pivot=data[pivotIndex]; 2|J>e(&akY  
F_KPhe$  
SortUtil.swap(data,pivotIndex,j); kzZdYiC  
N*d )<8_  
file://partition D%PrwfR  
l=i-1; r&^LSTU0!  
r=j; &c;@u?:@S  
do{ +o{]0~ y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); CYIp 3D'k  
SortUtil.swap(data,l,r); uU_0t;oR3  
} cQ:Y@f 9  
while(l SortUtil.swap(data,l,r); d[h2Y/AR  
SortUtil.swap(data,l,j); 'A#`,^]uLF  
-c%K_2`  
if((l-i)>THRESHOLD){ )9(Mt _  
stack[++top]=i; RPb/U8  
stack[++top]=l-1; Vfm (K  
} &`` dI,NC  
if((j-l)>THRESHOLD){ f T7Z6$  
stack[++top]=l+1; sIx8,3`&y  
stack[++top]=j; 4';~@IBf  
} v };r  
DA>_9o/l  
} L;wfTZa  
file://new InsertSort().sort(data); SZGeF;N  
insertSort(data); D{b*,F:&@)  
} N$Pi4  
/** d E0 `tX  
* @param data Oa[G #  
*/ U g 'y  
private void insertSort(int[] data) { ?]JTrv"zp  
int temp; [^iQE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6\8 lx|w  
} s)?=4zJ  
} J;?#Zt]`L  
} <r[5 S5y  
[&6VI?  
} *} yOL [  
:n1^Xw0q  
归并排序: ?Hb5<,1u3  
p&Os5zw;|  
package org.rut.util.algorithm.support; D{%l 4og  
}3G`f> s  
import org.rut.util.algorithm.SortUtil; /h/f&3'h  
+`;YK7o  
/** bnso+cA  
* @author treeroot W(5et5DN,  
* @since 2006-2-2 `# N j8  
* @version 1.0 Z/y&;N4  
*/ jacp':T  
public class MergeSort implements SortUtil.Sort{ Dgb@`oo  
*2K/)(  
/* (non-Javadoc) }|MPQy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b4l=Bg"  
*/ SGuR-$U`)  
public void sort(int[] data) { D..dGh.MY  
int[] temp=new int[data.length]; sTn}:A6  
mergeSort(data,temp,0,data.length-1); v() wngn  
} qs96($  
.X D.'S  
private void mergeSort(int[] data,int[] temp,int l,int r){ u@( z(P  
int mid=(l+r)/2; s-\.j-Sa  
if(l==r) return ; ( MI8Kkb1d  
mergeSort(data,temp,l,mid); 3J^"$qfSn  
mergeSort(data,temp,mid+1,r); 'N-nFc^  
for(int i=l;i<=r;i++){ i)vbmV  
temp=data; rQ_!/J[9  
} ?{@UB*  
int i1=l; d0@&2hO  
int i2=mid+1; =}bDT2Nb  
for(int cur=l;cur<=r;cur++){ 9Ai e$=  
if(i1==mid+1) 3ID 1>  
data[cur]=temp[i2++]; R)p+#F(s  
else if(i2>r) PP2>v|  
data[cur]=temp[i1++]; f)~j'e  
else if(temp[i1] data[cur]=temp[i1++]; 9 -Y.8:A`  
else  3M5+!H  
data[cur]=temp[i2++]; K>!+5A$6i  
} NJ^H"FLS:  
} TLBIM  
+pGkeZX  
} K?M{=$N  
17-D\ +}  
改进后的归并排序: C-vFl[@a0  
("G _{tVU  
package org.rut.util.algorithm.support; -tQi~Y[]  
+#|| w9p  
import org.rut.util.algorithm.SortUtil;  j-H2h  
a&'!g)d  
/** q<5AB{Oj?  
* @author treeroot nnv&~C  
* @since 2006-2-2 k9V#=,K0  
* @version 1.0 K,ccM[hu|  
*/ 8'niew 5d  
public class ImprovedMergeSort implements SortUtil.Sort { Ia> 07av  
b7thu5  
private static final int THRESHOLD = 10; |OgtAI9  
>I9w|z FA  
/* *,hg+?lZ  
* (non-Javadoc) `R9}.?7  
* q+KGQ*   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2H h5gD|>  
*/ oS2L"#  
public void sort(int[] data) { j %3wD2 l  
int[] temp=new int[data.length]; s{"}!y=]  
mergeSort(data,temp,0,data.length-1); td}%reH  
} LSX;|#AI  
f Fr[ &\[  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?h7,q*rxk  
int i, j, k; X&s@S5=r]  
int mid = (l + r) / 2; dX720/R  
if (l == r) y4j J&  
return; RM5$O+"  
if ((mid - l) >= THRESHOLD) IB'gY0*  
mergeSort(data, temp, l, mid); |a>W9Ym  
else +7`7cOqXg  
insertSort(data, l, mid - l + 1); '@jP$6T&  
if ((r - mid) > THRESHOLD) a9+l :c@  
mergeSort(data, temp, mid + 1, r); <Mt>v2a3Y  
else r5k{mV+  
insertSort(data, mid + 1, r - mid); EF Z]|Z7  
L0sb[:'luz  
for (i = l; i <= mid; i++) { ,aA%,C.0U  
temp = data; ZxDh94w/  
} B7y^)/  
for (j = 1; j <= r - mid; j++) { oqXs2F  
temp[r - j + 1] = data[j + mid]; <WWn1k_  
} [EdX6  
int a = temp[l]; +!@@55I-  
int b = temp[r]; GL S`1!  
for (i = l, j = r, k = l; k <= r; k++) { M5C%(sQ$  
if (a < b) { '}F=U(!  
data[k] = temp[i++]; j9voeV|7  
a = temp; 3Z taj^v  
} else { )2&U Rt.  
data[k] = temp[j--]; ['`Vg=O.{  
b = temp[j]; h'wI  
} JBvMe H5  
} km 0LLYG  
} =!V-V}KK-  
eu^B  
/** " M+g=  
* @param data 'yIz<o  
* @param l 8<2 [ F  
* @param i B %L dH  
*/ Ub"6OT1tl  
private void insertSort(int[] data, int start, int len) { 7uI~Xo ?N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W%&[gDp  
} RTXl3 jq  
} 4ayZ.`aK  
} [f8mh88 r  
} ]:K[{3iM  
v 7g?  
堆排序: DJ]GM|?  
]b&"](A  
package org.rut.util.algorithm.support; vz87]InI  
zCuN 8  
import org.rut.util.algorithm.SortUtil; axpn*(yE  
,cF $_7M  
/** FN>ns,  
* @author treeroot C7hJE -  
* @since 2006-2-2 >EJ`Z7E6  
* @version 1.0 "QV?C  
*/ ZD`9Ez)5  
public class HeapSort implements SortUtil.Sort{ (Y[q2b  
;_TPJy  
/* (non-Javadoc) IW~q,X+`V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UpoTXA D}k  
*/ a6/$}lCq  
public void sort(int[] data) { v"~0 3-SX  
MaxHeap h=new MaxHeap(); C8oAl3d+h  
h.init(data); 5(qc_~p^  
for(int i=0;i h.remove(); B=,j$uH  
System.arraycopy(h.queue,1,data,0,data.length); .!><qV g  
} V=+wsc  
k% -S7iQ  
private static class MaxHeap{ )e|n7|} $  
w~lxWgaY7  
void init(int[] data){ aR@s. ll  
this.queue=new int[data.length+1]; o;^k"bo6   
for(int i=0;i queue[++size]=data; aN,.pLe;  
fixUp(size); ;q ;}2  
} K7jz*|2  
} j 56Dt_  
` yXJaTbo  
private int size=0; J;mvD^`g  
j_#oP  
private int[] queue; g"P!KPrf1p  
4Ww.CkRG  
public int get() { j3kcNb  
return queue[1]; 4w)aAXK  
} Q!&@aKl  
$,&3:ke1  
public void remove() { nN|1cJ'.Fk  
SortUtil.swap(queue,1,size--); V]fsjpvlmr  
fixDown(1); )RZ:\:c  
} .~L^h/)Gjy  
file://fixdown 'UN 'gXny  
private void fixDown(int k) { 08pG)_L  
int j; ?A\[EI^  
while ((j = k << 1) <= size) { O.+02C_*  
if (j < size %26amp;%26amp; queue[j] j++; 8h=Rfa9  
if (queue[k]>queue[j]) file://不用交换 u,f$cR  
break; 9-6E(D-ux  
SortUtil.swap(queue,j,k); rf[w&~R  
k = j; NMCMY<o  
} \'}? j-8  
} Pd^v-}[  
private void fixUp(int k) { $SAk|  
while (k > 1) { Y{v\m(D  
int j = k >> 1; ~6HaZlBB  
if (queue[j]>queue[k]) to%n2^^K  
break; y G{;kJ P  
SortUtil.swap(queue,j,k); 2dpTU=K4  
k = j; 8`? vWJS  
} `~S ; UG   
} ~,: FZ1wh  
J-3%.fX,  
} )c"m:3D@  
_R ] qoUw;  
} >qT4'1S*g  
Fb:Z.  
SortUtil: ,FP<# 0F*a  
,vE)/{:d  
package org.rut.util.algorithm; <T0+-]i  
`dpm{s n  
import org.rut.util.algorithm.support.BubbleSort; U`HSq=J  
import org.rut.util.algorithm.support.HeapSort; :t#N.[=&#  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0**.:K<i  
import org.rut.util.algorithm.support.ImprovedQuickSort; \A'tV/YAd  
import org.rut.util.algorithm.support.InsertSort; }-8ZSWog6f  
import org.rut.util.algorithm.support.MergeSort; WXgGB[x  
import org.rut.util.algorithm.support.QuickSort; bf2B  
import org.rut.util.algorithm.support.SelectionSort; O*%@(w6  
import org.rut.util.algorithm.support.ShellSort; ',g'Tl^E  
< `/22S"  
/** 'A}@XGE:p  
* @author treeroot Sph:OX8  
* @since 2006-2-2 sE Rm+x<  
* @version 1.0 c&rS7%  
*/ VBe.&b8  
public class SortUtil { xD|CQo}:  
public final static int INSERT = 1; d4]9oi{}  
public final static int BUBBLE = 2; kTQvMa-X9D  
public final static int SELECTION = 3; OU /=wpt  
public final static int SHELL = 4; k:JlC(^h  
public final static int QUICK = 5; cIJqF.k  
public final static int IMPROVED_QUICK = 6; ~$ FgiW  
public final static int MERGE = 7; Z91GM1lrf8  
public final static int IMPROVED_MERGE = 8; u#&ZD|  
public final static int HEAP = 9; =,4iMENm!  
X":T>)J-  
public static void sort(int[] data) { I6B`G Im5  
sort(data, IMPROVED_QUICK); 8U$(9X  
} ]g0h7q)79  
private static String[] name={ (aQNe{D#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }+wvZq +c  
}; -ghmLMS%t  
SJXA  
private static Sort[] impl=new Sort[]{ w$2Z7S  
new InsertSort(), =bwuLno>  
new BubbleSort(), =OUms@xcE  
new SelectionSort(), n(}zq  
new ShellSort(), XX:?7:j}[8  
new QuickSort(), f'>270pH  
new ImprovedQuickSort(), 8M DX()Bm  
new MergeSort(), ~s[St0  
new ImprovedMergeSort(), /l)|B  
new HeapSort() pm 4"Q!K  
}; c%bGVRhE  
D')m8:>  
public static String toString(int algorithm){ 4* vV9*'!  
return name[algorithm-1]; x%WL!Lo  
} \j$q';9p  
p!wx10b  
public static void sort(int[] data, int algorithm) { C72!::o  
impl[algorithm-1].sort(data); `c )//o  
} i7UE9Nyl*  
>cE@m=[  
public static interface Sort { .e,(}_[[<  
public void sort(int[] data); A3#^R%2)W  
} bx5f\)  
3r[}'ba\  
public static void swap(int[] data, int i, int j) { H}[kit*9  
int temp = data; 6hvmp  
data = data[j]; 42Vz6 k:  
data[j] = temp; <.HDv:  
} q|N/vkqPz  
} !jIpgs5  
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