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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。 /Ky__l!bu  
插入排序: OD=!&LM  
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package org.rut.util.algorithm.support; }!i` 0p  
NS C/@._  
import org.rut.util.algorithm.SortUtil; sFDG)  
/** W~Z<1[  
* @author treeroot a83g\c5   
* @since 2006-2-2 <*EZ@XoN>  
* @version 1.0 n$(p-po  
*/ b|5w]<?'  
public class InsertSort implements SortUtil.Sort{ j( #%tIv  
z* <y5  
/* (non-Javadoc) |p00j|k   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `O6:t\d@  
*/ =?X$Yaw*  
public void sort(int[] data) { fj,m  
int temp; KL'zXkS  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <:|3rfm#  
} g-vg6@6  
} KTEZ4K^o=  
} ggb |Ew  
$c&0F,   
} A-ZmG7xk  
B ZMu[M  
冒泡排序: `)4a[thp  
y]e>E  
package org.rut.util.algorithm.support; =xianQ<lK  
M|i o4+sy  
import org.rut.util.algorithm.SortUtil; l =IeJh  
*V k ^f+5  
/** &2I*0  
* @author treeroot _KD5T4FZR  
* @since 2006-2-2 4l8BQz}sb  
* @version 1.0 +1 eCvt:,  
*/ +2C?9:bH  
public class BubbleSort implements SortUtil.Sort{ JmpsQ,,  
Pgp {$ID  
/* (non-Javadoc) rp7W }P+uU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V^il$'  
*/ -p-0;Hy  
public void sort(int[] data) { ->lu#; A5  
int temp; H g5++.Bp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %}>dqUyQ  
if(data[j] SortUtil.swap(data,j,j-1); /Y^8SO4  
} |vFj*XU  
} `3q;~ 9  
} "'Z- UV  
} iwY'4 Z e  
YW; Hk1  
} N6Z{BLZ  
]|:uU  
选择排序: vs&8wbS)  
_U)%kY8  
package org.rut.util.algorithm.support; i z]rFNR  
rSV gWr8  
import org.rut.util.algorithm.SortUtil; !Ngw\@f  
KbxR Lx]w  
/** xU9@$am  
* @author treeroot AN9[G  
* @since 2006-2-2 5c -N0@\  
* @version 1.0 (S^ck%]]a!  
*/ EqM;LgE=  
public class SelectionSort implements SortUtil.Sort { F:37MUQi  
2)/NFZ  
/* g\M5:Qm  
* (non-Javadoc) `^U&#K  
* XT@Mzo49z\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '7I g.K&  
*/ oYM,8 K  
public void sort(int[] data) { >E"9*:.^a  
int temp; u2sR.%2U<  
for (int i = 0; i < data.length; i++) { rU#li0 >  
int lowIndex = i; mxqG-*ch-  
for (int j = data.length - 1; j > i; j--) { ?n'O Fpd  
if (data[j] < data[lowIndex]) { %kU'hzLg  
lowIndex = j; PoD^`()FR{  
} '=cKU0 G#  
} `EMi0hm&H  
SortUtil.swap(data,i,lowIndex); *i<\iMoW  
} S-Ai3)t6  
} I+,SZ]n  
$EBb"+Y'T  
} Jfg7\&|  
Qu~*46?0  
Shell排序: 2Ji+{,?,  
GHN3PEJ>  
package org.rut.util.algorithm.support; G{c#\?12C  
E,*&BDW  
import org.rut.util.algorithm.SortUtil; aU<s<2 O)  
&$ p[  
/** =3ADT$YHd  
* @author treeroot AZZRa69=  
* @since 2006-2-2 MC=G"m:_  
* @version 1.0 Rf[V)x  
*/ RazBc.o<  
public class ShellSort implements SortUtil.Sort{  . gT4_  
YL^Z4: p  
/* (non-Javadoc) XizPMN5a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LD55n%|0`H  
*/ FrZ]=:  
public void sort(int[] data) { d(L{!mm  
for(int i=data.length/2;i>2;i/=2){ v$$]Gv(  
for(int j=0;j insertSort(data,j,i); m@ oUvxcd  
} d5U; $q{o  
}  93w~.p  
insertSort(data,0,1); )mkS5j`5\  
} k90B!kg  
y(8d?]4:_  
/** &:!ij  
* @param data ?q%b*Ek  
* @param j C+l?k2  
* @param i V-vlTgemwc  
*/ <TjBd1  
private void insertSort(int[] data, int start, int inc) { zk>h u<_  
int temp; |< N frz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); NfF~dK|  
} koH4~m{  
} %D^bah f  
} &`@M8-m#F  
/4C`k=>  
} eF1.VLI  
yDtOpM8<{  
快速排序: $pFk"]=  
f9'] jJ+  
package org.rut.util.algorithm.support; .xpmp6-  
dt ~iw  
import org.rut.util.algorithm.SortUtil; ]P*!'iYN(  
97x%w]kV  
/** @}eNV~ROu  
* @author treeroot R$xY8+}V  
* @since 2006-2-2 2z-$zB<vyw  
* @version 1.0 %c1FwAC  
*/ z~.9@[LG]  
public class QuickSort implements SortUtil.Sort{ 5<N~3 1z  
37K U~9-A  
/* (non-Javadoc) T}2:.Hk:N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ; J2-rh  
*/ lO&cCV;  
public void sort(int[] data) { BE%Z\E[[m  
quickSort(data,0,data.length-1); '49L(>.  
} /c^e& D  
private void quickSort(int[] data,int i,int j){ T~:_}J  
int pivotIndex=(i+j)/2; GYqJ!,  
file://swap cQ,9Rnfl,  
SortUtil.swap(data,pivotIndex,j); h[H%:743  
Ej|A ; &E  
int k=partition(data,i-1,j,data[j]); m0Z7N5v)  
SortUtil.swap(data,k,j); 1NGyaI  
if((k-i)>1) quickSort(data,i,k-1); ~'[jBn)  
if((j-k)>1) quickSort(data,k+1,j); 3M$X:$b  
X2P``YFV{  
} {_as!5l  
/** b_ JWnh  
* @param data I{<;;;a  
* @param i F '#^`G9  
* @param j ` @>ZGL:  
* @return (txt8q  
*/ i+RD]QL  
private int partition(int[] data, int l, int r,int pivot) { 'Q`C[*c  
do{ X X&K=<,Ja  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m >hovikY*  
SortUtil.swap(data,l,r); R .UumBM  
} k.{G&]r{  
while(l SortUtil.swap(data,l,r); }s6G!v^2""  
return l; ;/aB)JZ5=  
} O=`o'%K<  
iUCwKpb9  
} U IQ 6SvM  
K#;txzi  
改进后的快速排序: )"-fHW+fy  
`uhL61cMp  
package org.rut.util.algorithm.support; r\bq[9dX>  
] ?9t-  
import org.rut.util.algorithm.SortUtil; c 85O_J  
-3`Isv  
/** 9;pzzZ  
* @author treeroot <THUsY`3P&  
* @since 2006-2-2 xiJz`KD&  
* @version 1.0 V^ Y*xZ  
*/ [>wzl"cHW  
public class ImprovedQuickSort implements SortUtil.Sort { Pzptr%{  
EaCZx  
private static int MAX_STACK_SIZE=4096; cb4b, Ri  
private static int THRESHOLD=10; @92gb$xT  
/* (non-Javadoc) uc\.oG;~q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wmiafBA e  
*/ Es~DHX  
public void sort(int[] data) { >&[3  
int[] stack=new int[MAX_STACK_SIZE]; gb9[Meg'  
i&1U4q  
int top=-1; _&K\D p&@  
int pivot; gTuX *7w  
int pivotIndex,l,r; X -v~o/r7  
UCn.t  
stack[++top]=0; 5{HtJ?sKc5  
stack[++top]=data.length-1; UXQb ={  
}`4K)(>4nG  
while(top>0){ SCI1bMf  
int j=stack[top--]; !rz)bd3$  
int i=stack[top--]; *seu&  
H}(=?}+  
pivotIndex=(i+j)/2; < )Alb\Z  
pivot=data[pivotIndex]; (Q\\Gw   
I=K[SY,]9  
SortUtil.swap(data,pivotIndex,j); 4%%B0[Wo_O  
Xv8fPP(  
file://partition oAC^4-Ld  
l=i-1; i@Vs4E[b  
r=j; v=j>^F Z  
do{ G u6[{u  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *|sxa#  
SortUtil.swap(data,l,r); ujow?$&  
} 9ec0^T  
while(l SortUtil.swap(data,l,r); v<%]XHN  
SortUtil.swap(data,l,j); XEa~)i{O  
\N4d_ fPj  
if((l-i)>THRESHOLD){ `)LIVi"(D  
stack[++top]=i; v^;-@ddr  
stack[++top]=l-1; 7<fL[2-  
} mQFa/7FX  
if((j-l)>THRESHOLD){ $e>/?Ss  
stack[++top]=l+1; Cv0&prt  
stack[++top]=j; QZ?O;K1|y  
} '+tKvTU;  
HqB|SWyK  
} i+U@\:=  
file://new InsertSort().sort(data); Ko@zk<~"[  
insertSort(data); +tPx0>p;  
} }z8{B3K  
/** {WIY8B'c  
* @param data <( cM*kV  
*/ 3.B4(9:>,  
private void insertSort(int[] data) { ]v<d0" 2  
int temp; CGCQa0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); u0wn=Dg  
} S3b|wUf  
} u mqLKf=x!  
} N\c &PS  
9/FG,9  
} keqr%:E8  
:EYu 4Y  
归并排序: 56"#Syj  
/*AJ+K._  
package org.rut.util.algorithm.support; poTl|y @  
 bkxk i@t  
import org.rut.util.algorithm.SortUtil; ?rky6  
]Jja  
/** vU?b"n  
* @author treeroot GJ.kkTMT  
* @since 2006-2-2 OiYNH~hv  
* @version 1.0 P\Ai|"=&]  
*/ ~6\& y  
public class MergeSort implements SortUtil.Sort{ nMTLD  
\FIa,5k8  
/* (non-Javadoc) Gv!BB=ir(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #4Dn@Gqh.Y  
*/ |if~i;VKL  
public void sort(int[] data) { w:ORmR .p  
int[] temp=new int[data.length]; KuIBYaK, g  
mergeSort(data,temp,0,data.length-1); <j{0!J@:  
} XulaPq  
aytq4Ts  
private void mergeSort(int[] data,int[] temp,int l,int r){ X!HDj<  
int mid=(l+r)/2; I/oIcQS!k  
if(l==r) return ; ~8XX3+]z:X  
mergeSort(data,temp,l,mid); ;r gH}r  
mergeSort(data,temp,mid+1,r); $o/0A  
for(int i=l;i<=r;i++){ R)sp  
temp=data; 3Ne9% "  
} V"w`!  
int i1=l; -iY9GN89c  
int i2=mid+1; }pbBo2  
for(int cur=l;cur<=r;cur++){ ^2C0oX  
if(i1==mid+1) k&MlQ2'!<  
data[cur]=temp[i2++]; ?BWHr(J  
else if(i2>r) M(_^'3u  
data[cur]=temp[i1++]; j l;kcGE  
else if(temp[i1] data[cur]=temp[i1++]; N$N;Sw  
else `G_(xN7O  
data[cur]=temp[i2++]; Es.toOH$S  
} 73'U#@g6  
} X_vI0YX9  
3*CzXK>`M&  
} +A]&AkTw  
Y&oP>n! ei  
改进后的归并排序: ):/<H  
ipx@pNW;"  
package org.rut.util.algorithm.support; } l:mN  
t}5'(9  
import org.rut.util.algorithm.SortUtil; ,:0Q1~8  
ZAI1p+  
/** 2neF<H?^o  
* @author treeroot B, QC -Tn  
* @since 2006-2-2 A8_\2'b  
* @version 1.0 1<XiD 3H;  
*/ kA7~Yu5|  
public class ImprovedMergeSort implements SortUtil.Sort { c%q}"Y0oh  
J0IdFFZ|w  
private static final int THRESHOLD = 10; ;FV~q{  
!L &=?CX  
/* -_y~rx >  
* (non-Javadoc) t!J";l  
* Uq9,(tV`6g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wQF&GGY R  
*/ <7vIh0  
public void sort(int[] data) { ",MK'\E  
int[] temp=new int[data.length];  aX>4Tw  
mergeSort(data,temp,0,data.length-1); ?)A]q' O  
} "o\6k"_c>  
3Eb nZb  
private void mergeSort(int[] data, int[] temp, int l, int r) { u#zP>!  
int i, j, k; NZfo`iHAN  
int mid = (l + r) / 2; 1Qp1Es<)  
if (l == r) W+#}~2&Dv  
return; 4FfwpO3,Ku  
if ((mid - l) >= THRESHOLD) BxSk%$J  
mergeSort(data, temp, l, mid); xm<5S;E5U4  
else "-0pz\a  
insertSort(data, l, mid - l + 1); M9uH&CD6U  
if ((r - mid) > THRESHOLD) H$k![K6Uj  
mergeSort(data, temp, mid + 1, r); ?=/}Ft  
else JL" 3#p}  
insertSort(data, mid + 1, r - mid); afxj[;p!  
zxk??0] /  
for (i = l; i <= mid; i++) { %4|n-`:  
temp = data; ]>VJ--fH  
} ~|aeKtCs(.  
for (j = 1; j <= r - mid; j++) { USnD7I/b  
temp[r - j + 1] = data[j + mid]; `@u+u0  
} vSyi}5D  
int a = temp[l]; NPB,q& Th  
int b = temp[r]; 8I5VrT  
for (i = l, j = r, k = l; k <= r; k++) { |1_$! p  
if (a < b) { w*&n(zJF>  
data[k] = temp[i++]; <2o.,2?G  
a = temp; g(@$uJ  
} else { ^Ff~j&L@{  
data[k] = temp[j--]; !Zk%P  
b = temp[j]; f^[{k {t  
} bMK#^ZoH  
} =\ti<  
} "6I-]:K-  
P-E'cb%ub  
/** h-?q6O/|  
* @param data 0I(GB;E  
* @param l (/9.+V_  
* @param i aIn)']  
*/ 4y]:Gq z~  
private void insertSort(int[] data, int start, int len) { JR? )SGB  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i(&6ys5  
} s60:0>  
} NE=#5?6%g7  
} r2E>sHw  
} 6*(h9!_T1  
vUo.BA#;.b  
堆排序: v2Qc}o  
t9f4P^V`  
package org.rut.util.algorithm.support; 0aTEJX$iZ  
`aO@N(  
import org.rut.util.algorithm.SortUtil; RF,=bOr19  
=E"kv!e   
/** Ul$X%  
* @author treeroot iS:PRa1  
* @since 2006-2-2 rr07\;  
* @version 1.0 FkJ>]k  
*/ !Z+*",]_  
public class HeapSort implements SortUtil.Sort{ 5ykk11!p$  
TY54e T  
/* (non-Javadoc) JT.\f,z&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fo!Lp*'0  
*/ {P<BJ52=  
public void sort(int[] data) { Vav+$l|j@  
MaxHeap h=new MaxHeap(); #T$'.M  
h.init(data); %_j?<h&  
for(int i=0;i h.remove(); -NflaV~  
System.arraycopy(h.queue,1,data,0,data.length); )]>i >  
} o $HJg  
|`94Wj<  
private static class MaxHeap{ .Kh(F 6 s  
Sf4h!ly  
void init(int[] data){ ) v[Knp'  
this.queue=new int[data.length+1]; {>UMw>T[  
for(int i=0;i queue[++size]=data; '^-4{Y^2E  
fixUp(size); RBK>Lws6  
} cDQw`ORP*g  
} G0 nH Z6  
LDi ez i  
private int size=0; o+X'(!Trw  
>QZt)<[  
private int[] queue;  +,F= -  
ax{-Qi7z-+  
public int get() { lU50.7<08  
return queue[1]; f@;>M9)<  
} LO$#DHPt  
Q:fUM[  
public void remove() { YP\4XI  
SortUtil.swap(queue,1,size--); Xb+if  
fixDown(1); q/w6sQx$  
} 2=/g~rp*  
file://fixdown tO+%b=Z^  
private void fixDown(int k) { Og;$P 'U  
int j; C5sN[  
while ((j = k << 1) <= size) { '+q'H  
if (j < size %26amp;%26amp; queue[j] j++; sw qky5_K  
if (queue[k]>queue[j]) file://不用交换 E/L?D  
break; m)[wZP*e  
SortUtil.swap(queue,j,k); h@>rjeY@  
k = j; G5QgnxwP2  
} /nMqEHCyg  
} '/yx_R K2?  
private void fixUp(int k) { $ Op/5j  
while (k > 1) { wkZ2Y-#='  
int j = k >> 1; 1:;&wf  
if (queue[j]>queue[k]) LnRi+n[@7  
break; A]SB c2   
SortUtil.swap(queue,j,k); !7Nz W7j  
k = j; xBI"{nGoN  
} E~Up\f  
} aIt 0;D  
Am=PUQF$  
} P #2TM  
$OFFH[_z  
} T\e)Czz2-  
WfjUJw5x"s  
SortUtil: o%~K4 M".  
x4m_(CtK  
package org.rut.util.algorithm; :J4C'N  
)r|zi Z{F  
import org.rut.util.algorithm.support.BubbleSort; @qhg[= @  
import org.rut.util.algorithm.support.HeapSort; y1"^S  
import org.rut.util.algorithm.support.ImprovedMergeSort; 0&rH 9  
import org.rut.util.algorithm.support.ImprovedQuickSort; VGDEP!)-8  
import org.rut.util.algorithm.support.InsertSort; z5*O@_r+.b  
import org.rut.util.algorithm.support.MergeSort; D16;6K'{  
import org.rut.util.algorithm.support.QuickSort; jf)JPa_  
import org.rut.util.algorithm.support.SelectionSort; 8DS5<  
import org.rut.util.algorithm.support.ShellSort; = cI\OsV&?  
Y`O}]*{>8R  
/** Y)j,(9  
* @author treeroot 5$"[gdt)T  
* @since 2006-2-2 {8bY7NH|  
* @version 1.0 l-h7ksRs  
*/ "RJk7]p`*  
public class SortUtil { TcKKI  
public final static int INSERT = 1; 7E6?)bgh  
public final static int BUBBLE = 2; 2,e|,N"zN  
public final static int SELECTION = 3; |xgCV@  
public final static int SHELL = 4; 8H`l"  
public final static int QUICK = 5; j&G~;(DY  
public final static int IMPROVED_QUICK = 6; W4rw;(\  
public final static int MERGE = 7; cV!/  
public final static int IMPROVED_MERGE = 8; (_n8$3T75  
public final static int HEAP = 9; BK\~I  
"$"mWF-  
public static void sort(int[] data) { {FmFu$z+[  
sort(data, IMPROVED_QUICK); u/:Sf*;?  
} "vRqtEBO@  
private static String[] name={ \utH*;J|x  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" dv9Pb5i  
}; nu9k{owB T  
e4W];7_K!  
private static Sort[] impl=new Sort[]{ 4!s k3Cw{  
new InsertSort(), e"H+sM26-  
new BubbleSort(), {)[g  
new SelectionSort(), Di1G  
new ShellSort(), vls> 6h  
new QuickSort(), [c!vsh]^  
new ImprovedQuickSort(),  iIEIGQx  
new MergeSort(), ~ V- o{IA  
new ImprovedMergeSort(), | v'5*n9  
new HeapSort() +p}Xmn  
}; "u]Fl+c  
r~Ubgd ]U  
public static String toString(int algorithm){ rMFZ#38d  
return name[algorithm-1]; Y(yJ|y&  
} i\z0{;f|GX  
PaeafL65=  
public static void sort(int[] data, int algorithm) { Pk]9.e1_  
impl[algorithm-1].sort(data); Ay6rUN1ef  
} .&Gtw _  
qmyZbo|8&  
public static interface Sort { 9a Ps_|C  
public void sort(int[] data); }N9a!,{P=b  
} ]~M {@h!<  
257;@;  
public static void swap(int[] data, int i, int j) { iR5soIR  
int temp = data; E|uXi)!.x  
data = data[j]; \*"0wR;[K  
data[j] = temp; vHe.+XY  
} F"#*8P  
} WIl S^?5I<  
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