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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。 MruWt*  
插入排序: nNhN:?  
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package org.rut.util.algorithm.support; Y sr{1!K  
ys#M* {?  
import org.rut.util.algorithm.SortUtil; eaX`S.!jR  
/** ePs<jrB<  
* @author treeroot h*MR5qa  
* @since 2006-2-2 "[[fQpe4@  
* @version 1.0 e982IP  
*/ nrt0[E-&~  
public class InsertSort implements SortUtil.Sort{ l42m81x"  
yFpHRfF}  
/* (non-Javadoc) w|L~+   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !'{j"tv  
*/ |Y'$+[TE  
public void sort(int[] data) { p1?}"bHk  
int temp; 3~cOQ%#]4  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A^K,[8VX  
} =\XAD+  
} vhL&az  
} ^F"*;8$  
\^#1~Kx  
} DGd&x^C  
|ni cvg@  
冒泡排序: (VOKa  
WN?T*bz2  
package org.rut.util.algorithm.support; fwq|8^S@  
l4/TJ%`MG  
import org.rut.util.algorithm.SortUtil; `|/|ej]$P  
q#p)E=$  
/** 5z]dA~;*2  
* @author treeroot Nb];LCx  
* @since 2006-2-2 %M`|0g}!  
* @version 1.0 %<M<'jxSca  
*/ u^]yz&9V  
public class BubbleSort implements SortUtil.Sort{ p +T&9  
cEqh|Q  
/* (non-Javadoc) P);Xke  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rmabm\QY  
*/ %'=oMbi>i4  
public void sort(int[] data) { Qy70/on9  
int temp; M`>W'<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ M:I,j  
if(data[j] SortUtil.swap(data,j,j-1); F}AbA pTv  
} Cfi2N V  
} z9'0&G L  
} 9~; Ju^b  
} jSVO$AW~C  
?s?uoZ /2  
} N Dg]s2T  
J<BdIKCma  
选择排序: \ yOZ&qU  
)_Oc=/c|f  
package org.rut.util.algorithm.support; z5vryhX_Z  
}cPV_^{  
import org.rut.util.algorithm.SortUtil; {``}TsN  
?+|tPjg $  
/** U3V<ITZI8t  
* @author treeroot 6)3eB{$;  
* @since 2006-2-2 b?Jm)  
* @version 1.0 DA wzXsx  
*/ }2 r08,m  
public class SelectionSort implements SortUtil.Sort { :5*<QJuI#A  
6=g7|}  
/* u]2k%TUY  
* (non-Javadoc) [.Y=~)7FB  
* ho20> vw#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l3afuD :  
*/ m[bu(qz  
public void sort(int[] data) { As\5Ze9|  
int temp; c:6w >:  
for (int i = 0; i < data.length; i++) {  ~Afs  
int lowIndex = i; 3> (`Y  
for (int j = data.length - 1; j > i; j--) { 9@1W=sl  
if (data[j] < data[lowIndex]) { UA9LI<Y  
lowIndex = j; dXDD/8E  
} [T%blaSX  
} @TprS d  
SortUtil.swap(data,i,lowIndex); !K 9(OX2;  
} EK#m?O:>  
} kC k-  
p)jxqg  
} AFFLnLA<L  
]Bsq?e^  
Shell排序: .UYpPuAkn  
w7D:0SGD  
package org.rut.util.algorithm.support; e)xWQ=,C  
2)A D'  
import org.rut.util.algorithm.SortUtil; UZ!hk*PF  
VM!x)i9z  
/** mTPj@F>  
* @author treeroot m#ie{u^  
* @since 2006-2-2 :mrGB3x{  
* @version 1.0 8`t%QhE2  
*/ ks5'Z8X  
public class ShellSort implements SortUtil.Sort{ Vj]kJ,j\y  
X^W> "q  
/* (non-Javadoc) ~"mZ0 E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) II8nz[s  
*/ GWVdNYpmr  
public void sort(int[] data) {  d!t@A  
for(int i=data.length/2;i>2;i/=2){ (FaT{W{  
for(int j=0;j insertSort(data,j,i); nKO&ffb'<  
} } 8P}L@q  
} #TgJ d  
insertSort(data,0,1); +B m+Pj>  
} @ 7?_Yw  
3XnXQ/({  
/** $"8k|^Z3  
* @param data TUaK:*x*  
* @param j [:QMnJ  
* @param i (*RybKoaA  
*/ zvf]}mNx  
private void insertSort(int[] data, int start, int inc) { ;Wa{q.)  
int temp; E5(Y*m!  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \zi3.;9|;  
} c6HU'%v  
} zK 2wLX  
} tTt3D]h(  
]#$kA9  
} LU{Z  
]~^/w}(K  
快速排序: is(!_Iv  
\uk#pL  
package org.rut.util.algorithm.support; p4'"Wk8  
$<cZ<g5)  
import org.rut.util.algorithm.SortUtil; %wf|nnieZ  
pPZ/O 6  
/** #CPPdU$  
* @author treeroot ;}~=W!yz  
* @since 2006-2-2 $5b|@  
* @version 1.0 'y?|shV{]  
*/ Uot-@|l  
public class QuickSort implements SortUtil.Sort{ Nd_@J&  
F[ EblJ  
/* (non-Javadoc) ymZ/(:3_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { +2cRr.  
*/ tTGK25&  
public void sort(int[] data) { Xa@wN/"F  
quickSort(data,0,data.length-1); (UF!Zb]{  
} skz]@{38  
private void quickSort(int[] data,int i,int j){ F}]_/cY7B  
int pivotIndex=(i+j)/2; Q: O>kCDV  
file://swap /6?plt&CA  
SortUtil.swap(data,pivotIndex,j); y!gM)9vq  
j7 =3\SO  
int k=partition(data,i-1,j,data[j]); ~ ZL`E  
SortUtil.swap(data,k,j); Fnpn_O XlH  
if((k-i)>1) quickSort(data,i,k-1); t^,Qy.L0  
if((j-k)>1) quickSort(data,k+1,j); XO#)i6}G  
9|?Lz  
} 0Qp'}_  
/** ,)$KS*f"*z  
* @param data 38rZ`O*D  
* @param i 5|CiwQg|,p  
* @param j  <%D"eD  
* @return X`n0b<  
*/ b 0b9#9x  
private int partition(int[] data, int l, int r,int pivot) { s[q4K  
do{ U"+ ry.3`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ig}e@]  
SortUtil.swap(data,l,r); A+*oT(`  
} E`fssd~  
while(l SortUtil.swap(data,l,r); r0deBRM  
return l; yim$y, =d  
} 50ew/fZj|  
NNw d;AC  
} 0;v~5|r  
5 ek %d  
改进后的快速排序: Sz|CreFK16  
+.]}f}Y  
package org.rut.util.algorithm.support; G}#/`]o!K  
+MZO%4  
import org.rut.util.algorithm.SortUtil; X8 )>}#:  
bH/pa#G(  
/** 1?RCJ]e5  
* @author treeroot ~H|LWCU)K8  
* @since 2006-2-2 AC:s4iacC  
* @version 1.0 RzRvu]]8  
*/ p=+*g.,O  
public class ImprovedQuickSort implements SortUtil.Sort { O^Vy"8Ji}y  
M`P]cX)x  
private static int MAX_STACK_SIZE=4096; OawrS{  
private static int THRESHOLD=10; (}X?v`Y^W  
/* (non-Javadoc) N>fYH.c3Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r!$NZ2I  
*/ mBZ Dl4 '  
public void sort(int[] data) { "QO/Jls  
int[] stack=new int[MAX_STACK_SIZE]; O*03PF^  
]cqZ!4?_  
int top=-1; z|]oM#Gt  
int pivot; !mxh]x<e  
int pivotIndex,l,r; o9LD6$  
1O2h9I$bk  
stack[++top]=0; %DRy&k/T  
stack[++top]=data.length-1; 2^ bpH%  
pR6A#DgB  
while(top>0){ ; G59}d p~  
int j=stack[top--]; ^ wF@6e7/&  
int i=stack[top--]; Q^Z<RA(C  
k,R~oSA'n  
pivotIndex=(i+j)/2; z3Y)-  
pivot=data[pivotIndex]; id tQXwa  
boF4d'g"  
SortUtil.swap(data,pivotIndex,j); <,pLW~2-"  
C6'*/wq  
file://partition 8gtCY~m  
l=i-1; 3.<6;?  
r=j; G#n^@kc*,  
do{ Sd\IGy{a  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K-EI?6`xM  
SortUtil.swap(data,l,r); @yn^6cE  
} 4 ?@uF[  
while(l SortUtil.swap(data,l,r); aT1CpY=T|.  
SortUtil.swap(data,l,j); ah/6;,T  
Hx2j=Q_dw  
if((l-i)>THRESHOLD){ vYSetAd v  
stack[++top]=i; 6Sb'Otw.  
stack[++top]=l-1; Ef`5fgp? S  
} sK 1m9  
if((j-l)>THRESHOLD){ [B ~zoB(  
stack[++top]=l+1; L.0} UXd  
stack[++top]=j; :Q r7:$S^  
} P"=UI$HN  
bN4&\d*u#  
} 7 xp1\j0  
file://new InsertSort().sort(data); Wt+y-ES  
insertSort(data); cUZ!;*  
} loC5o|Wh  
/** 7c29Ua~[  
* @param data f1Yv hvWL  
*/ g;-+7ViIr  
private void insertSort(int[] data) { h#@4@x{  
int temp; :%uyy5AZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); fa4951_  
} => uVp  
} ~t${=o430  
} }r~v,KDb  
ll(e,9.D  
}  mF*?e/  
/h7>Z9T  
归并排序: Y*kh$E%<#  
qXU:A-IdIl  
package org.rut.util.algorithm.support; Z9"{f)T  
\2R`q*a+  
import org.rut.util.algorithm.SortUtil; 4h;f>BG  
{V%%^Zhwy  
/** Q+N7:o!;<b  
* @author treeroot y#Mc4?  
* @since 2006-2-2 T3G/v)ufd  
* @version 1.0 j$|j8?  
*/ qP;{3FSkAF  
public class MergeSort implements SortUtil.Sort{ o0aO0Y  
*X=@yB*aK  
/* (non-Javadoc) L,L ~ .E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =M1a0i|d  
*/ I3G*+6V  
public void sort(int[] data) { ~jp!"f  
int[] temp=new int[data.length]; +H[}T ]  
mergeSort(data,temp,0,data.length-1); s`Yu"s 8}4  
} iJ`%yg,  
v7o?GQ75  
private void mergeSort(int[] data,int[] temp,int l,int r){ I 9{40_  
int mid=(l+r)/2; *`+<x  
if(l==r) return ; ;!l*7}5X=  
mergeSort(data,temp,l,mid); #gX%X~w$F  
mergeSort(data,temp,mid+1,r); 3R<ME c  
for(int i=l;i<=r;i++){ IW1GhZ41'  
temp=data; tA! M  
} 79{.O`v  
int i1=l; MPKpS3VS  
int i2=mid+1; j}rgO z.  
for(int cur=l;cur<=r;cur++){ XlPK3^'N)h  
if(i1==mid+1) <pTQpU  
data[cur]=temp[i2++]; u8-a-k5<  
else if(i2>r) MtpU~c  
data[cur]=temp[i1++]; 9{)Z5%Kz  
else if(temp[i1] data[cur]=temp[i1++]; [Krm .)  
else t4f (Y,v  
data[cur]=temp[i2++]; zB#_:(1qK  
} LyuSZa]  
} MekT?KPQ{L  
( oQ'4,F  
} N{1.g S  
)myf)"l5  
改进后的归并排序: l-<3{!  
22)0zY%\  
package org.rut.util.algorithm.support; D'7A2f  
qhV,u;\.  
import org.rut.util.algorithm.SortUtil; :`+|'*b(A  
Smq r q  
/** IvEMg2f}  
* @author treeroot hH <6E  
* @since 2006-2-2 Q3'fz 9v  
* @version 1.0 0hrCG3k.91  
*/ 0V<Aub[${  
public class ImprovedMergeSort implements SortUtil.Sort { x r-;,W  
_7Xd|\Zc  
private static final int THRESHOLD = 10; z $9@j2  
t[]['Iosd  
/* `Mg8]H~  
* (non-Javadoc) cJxW;WI!,  
* d{QMST2&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &_"ORqn&  
*/ ^y&q5p jj  
public void sort(int[] data) { ;\<""Yj@l  
int[] temp=new int[data.length]; \p5|}<Sr)  
mergeSort(data,temp,0,data.length-1); zb"rMzCH  
} SQh+5  
If~95fy~c  
private void mergeSort(int[] data, int[] temp, int l, int r) { >%9^%p^  
int i, j, k; J?._/RL8-  
int mid = (l + r) / 2; qq OxTG]  
if (l == r) O!:QJ ^8 d  
return; &}vR(y*#c  
if ((mid - l) >= THRESHOLD) h7bPAW=(  
mergeSort(data, temp, l, mid); EfFz7j&X  
else Oq*n9V  
insertSort(data, l, mid - l + 1); tRLE,(S,-  
if ((r - mid) > THRESHOLD) xU@1!%l@  
mergeSort(data, temp, mid + 1, r); _,DO~L  
else } sf YCz  
insertSort(data, mid + 1, r - mid); +J"'  'cZ  
n4^~gT%b5]  
for (i = l; i <= mid; i++) { Wt>J`  
temp = data; x|.v{tQa  
} mfZ)^X  
for (j = 1; j <= r - mid; j++) { ]kRI}Om2  
temp[r - j + 1] = data[j + mid]; j*tk(o}qG  
} t:\l&R&  
int a = temp[l]; ~V @;(_T  
int b = temp[r]; X6Un;UL  
for (i = l, j = r, k = l; k <= r; k++) { p`d XqW  
if (a < b) { 7e1dEgn  
data[k] = temp[i++]; z<a$q3!#  
a = temp; I`22Zwq:  
} else { (jMtN?&0H-  
data[k] = temp[j--]; -M6L.gi)oJ  
b = temp[j]; z(+&wa  
}  ( :  
} A'Gl Cp  
} 5gSylts8  
34z_+  
/** "\7v  
* @param data G@9u:\[l  
* @param l 5B1G?`]?  
* @param i NeHx2m+  
*/ BYS lKTh  
private void insertSort(int[] data, int start, int len) { L~IE,4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H#+\nT2m  
} jk )Vb  
} 3S5^ `Ag#  
} @|BD|{k  
} uG;?vvg>  
4:D:| r  
堆排序: b6|Z"{TI _  
b\:~;  
package org.rut.util.algorithm.support; ZP-dW|<[ x  
!K[/L< Kv  
import org.rut.util.algorithm.SortUtil; |8bE9qt.P  
lK*jhW?3:  
/** 80|onP\L  
* @author treeroot <|a=hHPi:  
* @since 2006-2-2 \^9pW 2v  
* @version 1.0 EJ`Q8uz  
*/ :/6()_>bO  
public class HeapSort implements SortUtil.Sort{ s _~IZ%+<.  
A#(`9  
/* (non-Javadoc) ur6e&bTp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #,&8&  
*/ _w z2  
public void sort(int[] data) { J_PH7Z*=,  
MaxHeap h=new MaxHeap(); UgC)7 K1  
h.init(data); oCVku:.  
for(int i=0;i h.remove(); OqBC/p B  
System.arraycopy(h.queue,1,data,0,data.length); @T ysXx  
} )|pU.K9qZ  
/YFa ;2 W  
private static class MaxHeap{ ZYa\"zp-  
\]8VwsP  
void init(int[] data){ } ~F~hf>s  
this.queue=new int[data.length+1]; ^LVk5l)\>g  
for(int i=0;i queue[++size]=data; Umz05*  
fixUp(size); y@3Q;~l,  
} L6+C]t}>6  
} 9/@ &*  
paWxanSt  
private int size=0; .xl.P7@JJ  
(9]6bd  
private int[] queue; zT7"VbP  
(~&w-w3  
public int get() { BqB |Fo  
return queue[1]; :H?f*aw  
} \lEkfcc  
zb:kanb-  
public void remove() { W pN.]x  
SortUtil.swap(queue,1,size--); & fu z2xv  
fixDown(1); {E51Kv&_  
} ;1`!wG-DD  
file://fixdown 2Lfah?Tx~C  
private void fixDown(int k) { E]1##6Ae  
int j; V&*D~Jq  
while ((j = k << 1) <= size) {   WK==j1  
if (j < size %26amp;%26amp; queue[j] j++; s?c JV `  
if (queue[k]>queue[j]) file://不用交换 5/?P|T   
break; @ 7W?8  
SortUtil.swap(queue,j,k);  qSTWb%  
k = j; rslvsS:  
} jXp. qK\"  
} <bUXC@3W  
private void fixUp(int k) { @?Zf-.  
while (k > 1) { @h}`DNaZ^  
int j = k >> 1; j (ygQ4T  
if (queue[j]>queue[k]) b7Oj<! Wo`  
break; "|t!7hC  
SortUtil.swap(queue,j,k); sn"fK=,#g  
k = j; SkHYXe"]  
} {x {H$f  
} #{*LvI&  
xE1'&!4O  
} ZzcPiTSO  
V_"f|[1  
} AnMV <  
,mKObMu  
SortUtil: TH4\HY9qa?  
(0L=AxH  
package org.rut.util.algorithm; vtyx`F f  
F*` t"7Lm  
import org.rut.util.algorithm.support.BubbleSort; &| !B!eOY  
import org.rut.util.algorithm.support.HeapSort; iZxt/}1X0  
import org.rut.util.algorithm.support.ImprovedMergeSort; exZLj0kvF  
import org.rut.util.algorithm.support.ImprovedQuickSort; LZ<[ll#C  
import org.rut.util.algorithm.support.InsertSort; xu\eXx6H  
import org.rut.util.algorithm.support.MergeSort; e |V]  
import org.rut.util.algorithm.support.QuickSort; %tmp  
import org.rut.util.algorithm.support.SelectionSort; (3;@^S4&w  
import org.rut.util.algorithm.support.ShellSort; zzIr2so  
e2w&&B-  
/** EzpFOqJG  
* @author treeroot 5=L} \ankn  
* @since 2006-2-2 %3o`j<  
* @version 1.0 =&vFVIhWcf  
*/ q \O Ou  
public class SortUtil { !SxG(*u  
public final static int INSERT = 1; & mt)d  
public final static int BUBBLE = 2; vt1lR5  
public final static int SELECTION = 3; !{Z~<Ky  
public final static int SHELL = 4; LFf`K)q  
public final static int QUICK = 5; QyGnDomQ  
public final static int IMPROVED_QUICK = 6; <9eu1^g  
public final static int MERGE = 7; zT#`qCbT'J  
public final static int IMPROVED_MERGE = 8; : ]WqfR)#  
public final static int HEAP = 9; Zu/<NC (  
+Qj(B@ i  
public static void sort(int[] data) { F)Oe9x\/  
sort(data, IMPROVED_QUICK); f.6~x$:)`E  
} rs-,0'z,7  
private static String[] name={ )T|L,Lp  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %J~WC$=Qv  
}; p&Ed\aQ%z;  
_O]xey^r  
private static Sort[] impl=new Sort[]{ 7%;_kFRV  
new InsertSort(), p2 %  
new BubbleSort(), )uheV,ZnY  
new SelectionSort(), }}r> K}  
new ShellSort(), FN^FvQ  
new QuickSort(), GP a`e  
new ImprovedQuickSort(), PaWr[ye  
new MergeSort(), $`J_:H%  
new ImprovedMergeSort(), #07!-)Gv  
new HeapSort() t ^SzqB  
}; eu#'SXSC F  
_Z Y\,_  
public static String toString(int algorithm){ UE"GJt`I  
return name[algorithm-1]; ](jFwxU  
} \Qy$I-Du  
",Cr,;]  
public static void sort(int[] data, int algorithm) { PXk?aJ  
impl[algorithm-1].sort(data); !L24+$  
} j/!H$0PN  
q(IQa@$SR  
public static interface Sort { H/fUM  
public void sort(int[] data); ]$b2a&r9  
} *rh,"Zo  
#,NvO!j<4  
public static void swap(int[] data, int i, int j) { #& ?g %'  
int temp = data; Jkt4@h2Q}  
data = data[j]; 6iA( o*'Yn  
data[j] = temp; "Cz<d w]D  
} kG0Yh2;#  
} kg97S  
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