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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。 9c /&+j  
插入排序: ddf# c,SQ  
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package org.rut.util.algorithm.support; xz @/^Cj  
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import org.rut.util.algorithm.SortUtil; h{ &X`$  
/** "`sr#  
* @author treeroot %:^|Q;xe  
* @since 2006-2-2 >bKN$,Qen  
* @version 1.0 b~M3j&  
*/ b r"4 7i  
public class InsertSort implements SortUtil.Sort{ !,f#oCL  
%E!^SF?Y  
/* (non-Javadoc) tkN5 |95  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $LS$:%i4  
*/ 3#d5.Ut  
public void sort(int[] data) { INm21MS$  
int temp; Nb))_+/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LI>tN R~  
} ~S\Ee 2e>  
} *?k~n9n5U  
} uC _&?  
mOLP77(o  
} Cst:5m0!  
S 1%/ee3  
冒泡排序: y~&R(x~w  
uP'x{Pr)  
package org.rut.util.algorithm.support; *3S ./ C}  
5`$.GV  
import org.rut.util.algorithm.SortUtil; H#/}FoBiS  
+1K9R\  
/** $"+ahS<?tC  
* @author treeroot '?q \mi  
* @since 2006-2-2 XJ3 5Z+M  
* @version 1.0 _L?`C  
*/  i7qG5U  
public class BubbleSort implements SortUtil.Sort{ mN_KAln  
4t(V)1+  
/* (non-Javadoc) m=Z1DJG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }CR@XD}[  
*/ piZ0KA"  
public void sort(int[] data) { `iX~cUQ  
int temp; w8|38m  
for(int i=0;i for(int j=data.length-1;j>i;j--){ MKad 5gD*<  
if(data[j] SortUtil.swap(data,j,j-1); @"`J~uK  
} B2QC#R  
} [SluYmW  
} +Om(&\c(6  
} (GLd" Zq  
J/M_cO*U  
} gFJ. p  
aY^_+&&G  
选择排序: dS7?[[pg9  
D ^ mfWJS  
package org.rut.util.algorithm.support; cx]&ae*  
jQAK ?7':=  
import org.rut.util.algorithm.SortUtil; 8 |2QJ  
mL!)(Bb  
/** \r_-gn'1b  
* @author treeroot O-rHfIxY  
* @since 2006-2-2 99'e)[\  
* @version 1.0 29]T:I1d[  
*/ #d+bld\  
public class SelectionSort implements SortUtil.Sort { "=7y6bM  
xLfx/&2  
/* k79" xyXX  
* (non-Javadoc) ogt<vng  
* <NV[8B#k]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9{gY|2R_  
*/ 6}aIb.j  
public void sort(int[] data) { xWY%-CWY.  
int temp; 95.m^~5  
for (int i = 0; i < data.length; i++) { jU1([(?"  
int lowIndex = i; Z J:h]  
for (int j = data.length - 1; j > i; j--) { ;a]2hd"6  
if (data[j] < data[lowIndex]) { {q9[0-LyJ  
lowIndex = j; 9v=fE2`-  
} |1sl>X,  
} 3"ALohlL  
SortUtil.swap(data,i,lowIndex); /D]?+<h1  
} +tbG^w %  
} w1Z9@*C!  
KrcL*j&^  
} +{Qk9Z  
BDW%cs  
Shell排序: aCu 8 D!  
\2q!2XWgK  
package org.rut.util.algorithm.support; ^Ge3"^x1  
3I87|5V,Z  
import org.rut.util.algorithm.SortUtil; N5>ioJj  
y be:u  
/** V%F^6ds$]0  
* @author treeroot 3P{ d~2  
* @since 2006-2-2 #KC& ct  
* @version 1.0 MP5 vc5[  
*/ 3b1;f)t  
public class ShellSort implements SortUtil.Sort{ |9YY8oT.  
|@{4zoP_N  
/* (non-Javadoc) =Q#} ,T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xgw[)!g^\  
*/ 0 K T.@P  
public void sort(int[] data) { q;&\77i$  
for(int i=data.length/2;i>2;i/=2){ m+y5Q&;f  
for(int j=0;j insertSort(data,j,i); inO)Y]|f  
} Nj8 `<Sl  
} gq[|>Rs75  
insertSort(data,0,1); :VP*\K/:  
} B d#D*"gx  
~>h_#sIBC  
/** ,{"%-U#z  
* @param data )bJS*#  
* @param j > /,7j:X  
* @param i PuKT0*_ 7  
*/ |"4+~z%/9!  
private void insertSort(int[] data, int start, int inc) { R>BZQugZ~  
int temp; dso6ZRx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cg16|  
}  T06BrX  
} ,(h:0L2v7d  
} 8Z YF%  
T$ <l<.Qd  
} q J)[2:.G  
ELh`|X  
快速排序: o:`>r/SlL  
XH9Y|FX%#  
package org.rut.util.algorithm.support; :bJT2o[  
FW](GWp`:  
import org.rut.util.algorithm.SortUtil; S8 +GM  
Q8] lz}  
/** L9,;zkgo  
* @author treeroot 0L3v[%_j"  
* @since 2006-2-2 IM""s]  
* @version 1.0 P ?- #d\qi  
*/ xq#YBi,  
public class QuickSort implements SortUtil.Sort{ du,mbTQib  
uB;\nj5'D  
/* (non-Javadoc) z[zURj-*]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  58S>B'  
*/ {bQi z  
public void sort(int[] data) { m Mp(  
quickSort(data,0,data.length-1); A1VbqA  
} l/(|rl#6  
private void quickSort(int[] data,int i,int j){ d D%Sbb  
int pivotIndex=(i+j)/2; TR@*tfS  
file://swap ;ps 0wswX  
SortUtil.swap(data,pivotIndex,j); 6N7^`ghTf  
Ie12d@  
int k=partition(data,i-1,j,data[j]); b FV+|0  
SortUtil.swap(data,k,j); Wq5Nc  
if((k-i)>1) quickSort(data,i,k-1); @xKfqKoqg  
if((j-k)>1) quickSort(data,k+1,j); ]+C;C  
XTzz/.T;Z  
} /z'fFl^6O  
/** *@2+$fgz  
* @param data 58TH|Rj+I  
* @param i = JE4C9$,  
* @param j {jnfe}]  
* @return <oFZFlY@  
*/ =f FTi1]/h  
private int partition(int[] data, int l, int r,int pivot) { E=G"_ ^hCE  
do{ Zo=w8Hr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O,$ ?Pj6  
SortUtil.swap(data,l,r); bl/tl_.p00  
} @m#1[n;  
while(l SortUtil.swap(data,l,r); #3fS_;G  
return l; 6),U(e%  
} puv/+!q  
=f{)!uW<4  
} vKX6@eg"  
VLLE0W _]  
改进后的快速排序: d&N[\5q  
rMV<}C ^  
package org.rut.util.algorithm.support; 3Ryae/Nk  
#2dd`F8  
import org.rut.util.algorithm.SortUtil; UW!*=?h  
lWiC$  
/** &CtWWKS"  
* @author treeroot z}772hMB  
* @since 2006-2-2 p\>im+0oh  
* @version 1.0 a$}n4p  
*/ cJIA/HQe  
public class ImprovedQuickSort implements SortUtil.Sort { u]<7}R@s  
oRp;9   
private static int MAX_STACK_SIZE=4096; khXp}p!Zm  
private static int THRESHOLD=10; =N,ahq  
/* (non-Javadoc) aPELAU-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rM|] }M=_V  
*/ ~~8?|@V  
public void sort(int[] data) { p3e_:5k  
int[] stack=new int[MAX_STACK_SIZE]; n]K`ofjl^  
\A~r~  
int top=-1; 0$saDmED  
int pivot; }DCR(p rD  
int pivotIndex,l,r; $e99[y@  
>v r! 3  
stack[++top]=0; S2^Ckg  
stack[++top]=data.length-1; IY* ~df  
4`KQ@m  
while(top>0){ W*S !}ZT`  
int j=stack[top--]; ;!k{{Xndd  
int i=stack[top--]; -Hx._I$l  
+Jf4 5[D   
pivotIndex=(i+j)/2;  !623;   
pivot=data[pivotIndex]; hny(:Dj  
@i" ^b  
SortUtil.swap(data,pivotIndex,j); t;>"V.F<1  
 4E"OD+  
file://partition J|'e.1v  
l=i-1; r.JY88"  
r=j; $y2"Q,n+  
do{ 6Cdc?#&  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "OdR"M(G\  
SortUtil.swap(data,l,r); H#Aar  
} l^LYSZg'R8  
while(l SortUtil.swap(data,l,r); |=\w b^l+  
SortUtil.swap(data,l,j); oo+nqc`,O  
ZysZS%  
if((l-i)>THRESHOLD){ H@j D %  
stack[++top]=i; W-72&\7  
stack[++top]=l-1; BAJEn6f?  
} *[@k=!73  
if((j-l)>THRESHOLD){ Pc{0Js5VzE  
stack[++top]=l+1; o3s ME2  
stack[++top]=j; ]<Ugg  
} Q5!"tF p  
qGH s2Og  
} ,(D:cRN  
file://new InsertSort().sort(data); S8zc1!  
insertSort(data); \W;+@w|c  
} ~9tPT 0^+  
/** ljS~>&  
* @param data o<J_?7c~}  
*/ |= xK-;qs  
private void insertSort(int[] data) { g_T[m*  
int temp; *.+Eg$'~V  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dx<KZR$!V  
} ME9jN{ le  
} _ +"V5z  
} qaj~q(j~ C  
]jkaOj  
} ,j'>}'wG)  
N1pw*<&  
归并排序: 88]UA  
Zn-F!Lsv  
package org.rut.util.algorithm.support; s}O9[_v  
ya*KA.EGg  
import org.rut.util.algorithm.SortUtil; '`+GC9VG  
xUKn  
/** nc0!ag  
* @author treeroot C2Pw;iK_t  
* @since 2006-2-2 J7p'_\  
* @version 1.0 pOe"S  
*/ j;3hQOl  
public class MergeSort implements SortUtil.Sort{ R Cgn\  
M^e;WY@ D  
/* (non-Javadoc) +H'{!:e5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EWr8=@iU  
*/ N'!:  
public void sort(int[] data) { App9um3:  
int[] temp=new int[data.length]; Kgb 3>r  
mergeSort(data,temp,0,data.length-1); e*zt;SR  
} O< \i{4}}  
K<_bG<tm_  
private void mergeSort(int[] data,int[] temp,int l,int r){ @N?u{|R:d  
int mid=(l+r)/2; 1R e5)Y:i  
if(l==r) return ; /W vgC)  
mergeSort(data,temp,l,mid); 8 <~E;:  
mergeSort(data,temp,mid+1,r); )-RI  
for(int i=l;i<=r;i++){ iaq+#k@V  
temp=data; ^xpiNP!?a  
} Pd~{XM,yfW  
int i1=l; C `>1x`n  
int i2=mid+1; S(c&XJR  
for(int cur=l;cur<=r;cur++){ GJ3@".+6  
if(i1==mid+1) pKxq\U  
data[cur]=temp[i2++]; )PU_'n=>  
else if(i2>r) `!JcQ'u  
data[cur]=temp[i1++]; #cZ<[K q6  
else if(temp[i1] data[cur]=temp[i1++]; [5iBXOmpS=  
else ;mi+[`E  
data[cur]=temp[i2++]; qZcRK9l]F1  
} >@mvb@4*  
} '/ >7pB  
LRuB&4r8  
} 5i$iUDuT>(  
$z"1&y)  
改进后的归并排序: gXQ s)Eyv  
??7c9l5,  
package org.rut.util.algorithm.support; 8vuA`T!~G  
j~ 'a %P  
import org.rut.util.algorithm.SortUtil; qkg`4'rLg  
1 po.Cmx  
/** t}!Y}D  
* @author treeroot {zri6P+s  
* @since 2006-2-2 pI>[^7  
* @version 1.0 ?Tr]zxtd  
*/ .}O _5b(  
public class ImprovedMergeSort implements SortUtil.Sort { 9k`}fk\M  
_T{ "F  
private static final int THRESHOLD = 10; IGtpL[.;/  
A%zX LV=3O  
/* wS)2ymRg  
* (non-Javadoc) 3G;#QK -c  
* T=kR!Gx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?KKu1~a_  
*/ dpTeF`N  
public void sort(int[] data) { d hp-XIA;  
int[] temp=new int[data.length]; FthrI  
mergeSort(data,temp,0,data.length-1); h3<L,Olp  
} -!C9x?gNY  
xe!([^l&  
private void mergeSort(int[] data, int[] temp, int l, int r) { SdJGhU  
int i, j, k; 9 :ubPqt  
int mid = (l + r) / 2; ! /^Jma7n  
if (l == r) EV$$wrohQ`  
return; jnu!a.H  
if ((mid - l) >= THRESHOLD) X>$s>})Y  
mergeSort(data, temp, l, mid); REj<2Lo  
else G 5T{*  
insertSort(data, l, mid - l + 1); 0[O."9  
if ((r - mid) > THRESHOLD) b":3J)Y6.  
mergeSort(data, temp, mid + 1, r); 6N<v&7cSB  
else 2jUEL=+Y  
insertSort(data, mid + 1, r - mid); FD+y?UF  
\?VNr2   
for (i = l; i <= mid; i++) { C~ r(*nr  
temp = data; A.%MrgOOX  
} ,?k~>,{3  
for (j = 1; j <= r - mid; j++) { z87_/(nu  
temp[r - j + 1] = data[j + mid];  u51%~  
} qTA,rr#p0  
int a = temp[l]; DA(ur'D  
int b = temp[r]; /p PSo  
for (i = l, j = r, k = l; k <= r; k++) { ?}tWI7KI  
if (a < b) { A'=,q  
data[k] = temp[i++]; e0nr dM[i  
a = temp; )^)j=xs  
} else { JR_s-&GaM  
data[k] = temp[j--]; @_L:W1[  
b = temp[j]; wyVQV8+&>  
} A;'*>NS  
} 'ZUB:R@[  
} p[J 8 r{'  
3%NbT  
/** H ({Y  
* @param data z/Kjz$l!  
* @param l L4x08 e  
* @param i 2`ED?F68gH  
*/ {f12&t  
private void insertSort(int[] data, int start, int len) { M< 1rQW'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Tx|}ke~  
} jlA?JB  
} yW!+:y_N_  
} ?L'4*S]  
} V|njgcn d  
1yg5d9  
堆排序: l[cBDNlrC;  
KBO{ g:"  
package org.rut.util.algorithm.support; =ll{M{0Q]!  
ee7{5  
import org.rut.util.algorithm.SortUtil; |LwW/>I  
B4>kx#LR  
/** jb5nL`(j$  
* @author treeroot KXtc4wra  
* @since 2006-2-2 `PH*tdYrh  
* @version 1.0 $zR[2{bg  
*/ &AS<2hB  
public class HeapSort implements SortUtil.Sort{ KXS{@/"-B  
Naqz":%.  
/* (non-Javadoc) -2`D(xC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '(4#He?Gd  
*/ D{J+}*y  
public void sort(int[] data) { v)VhR2d3  
MaxHeap h=new MaxHeap(); O6Gg?j  
h.init(data); mH/$_x)o  
for(int i=0;i h.remove(); `~.0PnHf  
System.arraycopy(h.queue,1,data,0,data.length); UyWKE<  
} 2^TJ_xG~  
=64%eF  
private static class MaxHeap{ tI&E@  
bB#6Xx  
void init(int[] data){ 49;2tl;F  
this.queue=new int[data.length+1]; 1,/L&_=_A  
for(int i=0;i queue[++size]=data; j. m(Z}  
fixUp(size); |}O9'fyU8  
} tK$x=9M  
} }_A#O|dxO  
,fQs+*j  
private int size=0; %mv9+WJN.  
4=T>Iy  
private int[] queue; u3Jsu=Nx-  
>~% _U+6  
public int get() { +EnJyli  
return queue[1]; )t/[z3rn  
} <> &!+|#  
6kc/  
public void remove() { 5nhc|E)C  
SortUtil.swap(queue,1,size--); G#~6a%VW  
fixDown(1); ic+tn9f\  
}  1aAYBV<3  
file://fixdown !{L6 4qI  
private void fixDown(int k) { S(5aJ[7Zm  
int j; F%v?,`_&I  
while ((j = k << 1) <= size) { GsG9;6c+u  
if (j < size %26amp;%26amp; queue[j] j++; R^i8AbFW  
if (queue[k]>queue[j]) file://不用交换 'aWzam>  
break; 4*<27  
SortUtil.swap(queue,j,k); A^a9,T  
k = j; 1Xv- e8M  
} /^ d!$v  
} wkp|V{k  
private void fixUp(int k) { 9%VNzPzf  
while (k > 1) { kp+\3z_  
int j = k >> 1; D-zqu~f`  
if (queue[j]>queue[k]) otsINAizgS  
break; <AzM~]"3  
SortUtil.swap(queue,j,k); P9wx`x""k  
k = j; t-vH\m  
} u/@dWeY[]  
} aXSTA ,%  
kdWk{ZT^  
} x{B%TM-Ey  
o~Im5j],*  
} mh4NZ @;  
#hBDOXHPf  
SortUtil: qP"<vZ  
JQ*CF(9  
package org.rut.util.algorithm; fRTQ5V  
6^L4wd7)  
import org.rut.util.algorithm.support.BubbleSort; L;},1 \  
import org.rut.util.algorithm.support.HeapSort; );$L#XpB  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8#Q=CTjF  
import org.rut.util.algorithm.support.ImprovedQuickSort; FuYV}C  
import org.rut.util.algorithm.support.InsertSort; Mb I';Mq  
import org.rut.util.algorithm.support.MergeSort; Tv;|K's'  
import org.rut.util.algorithm.support.QuickSort; ]0HlPP:2  
import org.rut.util.algorithm.support.SelectionSort; Ef;OrE""  
import org.rut.util.algorithm.support.ShellSort; !5~{?sr>  
0!n6tz lT  
/** T/V 5pYl  
* @author treeroot >Ic)RPO9  
* @since 2006-2-2 mn=G6h T}W  
* @version 1.0 (+Yerc.NQt  
*/ Jmln*,Ol7  
public class SortUtil { h5bQ  
public final static int INSERT = 1; |zV-a2K%J  
public final static int BUBBLE = 2; BO b#9r  
public final static int SELECTION = 3; ~CQYF,[Th  
public final static int SHELL = 4; }5RCks;)*  
public final static int QUICK = 5; ,R j{^-k  
public final static int IMPROVED_QUICK = 6; eeuTf  
public final static int MERGE = 7; %#rH~E  
public final static int IMPROVED_MERGE = 8; 3N) bJ  
public final static int HEAP = 9; 3B(6^iS  
^G,]("di`  
public static void sort(int[] data) { dpO ZqhRs.  
sort(data, IMPROVED_QUICK); io]e]m%  
} -vXX u;frt  
private static String[] name={ F3\'WQh  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #:v e3gWl  
}; -*sDa6L  
Ojx1IL  
private static Sort[] impl=new Sort[]{ vZM.gn  
new InsertSort(), qbjLTE=  
new BubbleSort(), zR'lQ<u  
new SelectionSort(), Y5~_y?BX  
new ShellSort(), n lsQf3  
new QuickSort(), '3f"#fF6  
new ImprovedQuickSort(), TR8<=  
new MergeSort(), AepAlnI@  
new ImprovedMergeSort(), 9S0I<<m  
new HeapSort() 4VjP:>*p  
}; HR55|`]  
;zD1#dD  
public static String toString(int algorithm){ .`84Y  
return name[algorithm-1]; Z-RgN  
} aClXg-  
ic:_v?k  
public static void sort(int[] data, int algorithm) { VRYj&s'@  
impl[algorithm-1].sort(data); .17WF\1HC.  
} -{i;!XE$SR  
5-Vdq  
public static interface Sort { ?Sj3-*/?  
public void sort(int[] data);  _2VL%  
} 3_W1)vd{  
%aU4d e^  
public static void swap(int[] data, int i, int j) { 6mJa  
int temp = data; 3 T$gT  
data = data[j]; /wB<1b"  
data[j] = temp; )+c4n]  
} K@P5]}'#  
} 8[SiIuIV  
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