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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。 >z fq*_  
插入排序: @%I_&!d  
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package org.rut.util.algorithm.support; $UFge%`,q@  
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import org.rut.util.algorithm.SortUtil; X/- W8  
/** fD3jwPL  
* @author treeroot yr/]xc$  
* @since 2006-2-2 vp )}/&/  
* @version 1.0 O<eWq]  
*/ ~$?y1Yv  
public class InsertSort implements SortUtil.Sort{ =!pu+&I 9  
Zq\RNZ}  
/* (non-Javadoc) 2$j Ot}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1sIy*z  
*/ QK``tWLIg7  
public void sort(int[] data) { &;~2sEo,  
int temp; X]&;8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LK   
} ei+9G,  
} Tc'{i#%9j  
} #f|NM7  
RpmBP[  
} y(bt56 | z  
hX>VVeIZ  
冒泡排序: gW 6G+  
6oTbn{=UUq  
package org.rut.util.algorithm.support; ]<\;d B  
Q+u#?['  
import org.rut.util.algorithm.SortUtil; k *G!.  
P/C+L[X=  
/** Z uFV tW@  
* @author treeroot tn:/pPap  
* @since 2006-2-2 jE?\Yv3  
* @version 1.0 *x*,I ,03  
*/ (.@p4q Q-  
public class BubbleSort implements SortUtil.Sort{ m p|20`go  
y'0dl "Dy\  
/* (non-Javadoc) @~!-a s7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6`s%%v  
*/ -A-hxK*^  
public void sort(int[] data) { OUIUgej  
int temp; m! '1$G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %X0NHta ~@  
if(data[j] SortUtil.swap(data,j,j-1); Z}'F"}QI  
} 1{hoO<CJ  
} Z3abem<Q  
} YP$*;l  
}  23(E3:.  
|;U}'|6  
} #^4>U&?  
@sg T[P*ut  
选择排序: *1o+o$hY2  
quCWc2pXX  
package org.rut.util.algorithm.support; n ]6 0  
wEHAkc)Q  
import org.rut.util.algorithm.SortUtil; w ~L\Ebg  
}`<>$2b  
/** .j:.WnW  
* @author treeroot ^M"=A}h  
* @since 2006-2-2 },Y; (n'  
* @version 1.0 HM$`z"p5jg  
*/ zV_-rf  
public class SelectionSort implements SortUtil.Sort { |peMr#  
z[|PsC3i:  
/* |0%4G k);  
* (non-Javadoc) $!l2=^\3  
* avxn}*:X.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $)TF,-#x  
*/ k+q6U[ce  
public void sort(int[] data) { OnPy8mC  
int temp; C)KtM YA,  
for (int i = 0; i < data.length; i++) { e??{&[  
int lowIndex = i; e`Zg7CaDd  
for (int j = data.length - 1; j > i; j--) { f5=t*9_-[  
if (data[j] < data[lowIndex]) { 4MtqQq4%  
lowIndex = j; c~L6fvS  
} B0oY]r6  
} s68_o[[E  
SortUtil.swap(data,i,lowIndex); n?P 5pJ  
} _iboTcUF  
} |3<ehvKy  
uuUVE/^V'  
} {Y* ]Qc  
d*\C^:Z  
Shell排序: ]tdo&  
uVuToMCp  
package org.rut.util.algorithm.support; fD#&:)  
ap'kxOf"1  
import org.rut.util.algorithm.SortUtil; A_(+r  
_E&vE5<-$  
/** Am0.c0h  
* @author treeroot CN$A-sjZ  
* @since 2006-2-2 ^/d^$  
* @version 1.0 ,^+R%7mv  
*/ |b-Zy~6  
public class ShellSort implements SortUtil.Sort{ ad$Qs3)6o  
)[M<72  
/* (non-Javadoc) *liPJ29C[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mZ5K hPvf8  
*/ :5cu,&<Gv  
public void sort(int[] data) { @6!y(e8"J]  
for(int i=data.length/2;i>2;i/=2){ Qqhb]<z  
for(int j=0;j insertSort(data,j,i); JbC\l  
} BWi 7v  
} wM4g1H%s  
insertSort(data,0,1); b%!`fn-;  
} 6P*)rye  
kN9sug^  
/** WGG) mh&-  
* @param data mQA<t)1  
* @param j iUG/   
* @param i <]e;tF)+  
*/ 'Rh>w=wB'  
private void insertSort(int[] data, int start, int inc) { 9hs{uxwuEE  
int temp; HlL@{<  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2-E71-J  
} {O&liU4  
} Lj Q1ar\  
} +81+4{*  
vK.4JOlRF  
}   [aS)<^  
U)/Ul>dY  
快速排序: vS t=Ax3]  
$9i5<16  
package org.rut.util.algorithm.support; XX[Wwt  
WJSHLy<a  
import org.rut.util.algorithm.SortUtil; s^t1PfP(,  
$9_.Q/9>  
/** $}UJs <-F  
* @author treeroot ihBl",l&Hq  
* @since 2006-2-2 <:{[Zvl'k  
* @version 1.0 ?a0}^:6  
*/ +e]b,9.sR  
public class QuickSort implements SortUtil.Sort{ 8}#Lo9:,d  
ylxfh(  
/* (non-Javadoc) }.$ B1%2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x5 ~E'~_  
*/ vlN. OQ  
public void sort(int[] data) { 4e#K.HU_  
quickSort(data,0,data.length-1); rU^ghF  
} cf!k 9x9Z  
private void quickSort(int[] data,int i,int j){ UlN|Oy,  
int pivotIndex=(i+j)/2; Sd{"A0[A|  
file://swap Isgk  
SortUtil.swap(data,pivotIndex,j); *pC -`k  
Rw{v"n  
int k=partition(data,i-1,j,data[j]); !BikF4Y1L&  
SortUtil.swap(data,k,j); ?.A/E?Oc  
if((k-i)>1) quickSort(data,i,k-1); 0(g MR  
if((j-k)>1) quickSort(data,k+1,j); u[|S*(P  
G~tOCp="p  
} i|,A1c"*  
/** 1&pP}v ?  
* @param data |M/ \'pOe  
* @param i y{?jr$js<  
* @param j FuiW\=^  
* @return geN%rD  
*/ jp]geV54  
private int partition(int[] data, int l, int r,int pivot) { R"t$N@ZFb  
do{ '/*c Yv45  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); c^WBB$v  
SortUtil.swap(data,l,r); %=<NqINM[  
} f -nC+   
while(l SortUtil.swap(data,l,r); tWOze, N  
return l; 'C>SyU  
} i8 ):0  
D&m"~wI  
} >(ww6vk2  
j6HbJ#]  
改进后的快速排序: yaXa8v'oC  
# +]! u%n  
package org.rut.util.algorithm.support; t RyGxqiG  
6Vzc:8o>  
import org.rut.util.algorithm.SortUtil; $q$\GOQ 9  
>~>[}d;glw  
/** jTgh+j]AP  
* @author treeroot n rB27  
* @since 2006-2-2 gO%i5  
* @version 1.0 > ,Bu^] C  
*/ *g41"Cl  
public class ImprovedQuickSort implements SortUtil.Sort { 5XUI7Q%  
?HyioLO  
private static int MAX_STACK_SIZE=4096; e CUcE(  
private static int THRESHOLD=10; "#k(V=y  
/* (non-Javadoc) E=*Q\3G~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wEc5{ b5M  
*/ 3M*[a~  
public void sort(int[] data) { wP1VQUL  
int[] stack=new int[MAX_STACK_SIZE]; [f(^vlK  
~wg^>!E  
int top=-1; BF [?* b  
int pivot; :tG".z  
int pivotIndex,l,r; K y2xWd8  
gq1Y]t|4F  
stack[++top]=0; 1WN93 SQ=  
stack[++top]=data.length-1; UnF4RF:A2&  
VEEeQy  
while(top>0){ y" -{6{3  
int j=stack[top--]; 7[1 R}G V  
int i=stack[top--]; 3}1+"? s  
qTMz6D!Q  
pivotIndex=(i+j)/2; ujqktrhuLb  
pivot=data[pivotIndex]; p% %Y^=z  
Qu\l$/  
SortUtil.swap(data,pivotIndex,j); 64X#:t+  
c qyh#uWe  
file://partition 3A}8?  
l=i-1; (4{9 QO  
r=j; FN`kSTm*0!  
do{ <sB45sNbU`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); qAik$.  
SortUtil.swap(data,l,r); &.4_4"l(  
} km^+ mK  
while(l SortUtil.swap(data,l,r); O~ 0 1)%  
SortUtil.swap(data,l,j); 1AV1W_"  
XJ?z{gXJ  
if((l-i)>THRESHOLD){ +`3ZH9  
stack[++top]=i; 1H 6Wrik  
stack[++top]=l-1; }jgAV  
} aKtTx~$@  
if((j-l)>THRESHOLD){ B :.;:AEbT  
stack[++top]=l+1; k $&A  
stack[++top]=j; B9:0|i!!A`  
} 2A ,36,  
BVp.A]  
} "Oko|3  
file://new InsertSort().sort(data); [E7@W[xr  
insertSort(data); *~^^A9C8  
} =V 7w CW  
/** kxwm08/|f  
* @param data 97dI4 t<  
*/ /k"P4\P`+Q  
private void insertSort(int[] data) { K!gFD  
int temp; ^v|!(h\ZC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hv*O9!cC  
} 'Pu;]sC  
} |YFlJ2w  
} uhLm yK  
+0 |0X {v  
} NmF2E+'  
Z+4Oa f!  
归并排序:  Z5-'|h$|  
t O>qd#I  
package org.rut.util.algorithm.support; )ixE  
Nq6CvDXi  
import org.rut.util.algorithm.SortUtil; !P3|T\|]+  
M0 8Y  
/** R7E"7"M10  
* @author treeroot RR=l&uT  
* @since 2006-2-2 }!Lr!eALr  
* @version 1.0 h!~yYNQ"  
*/ lM,:c.R  
public class MergeSort implements SortUtil.Sort{ x&Rp m<4  
 N&.p\T&t  
/* (non-Javadoc) ;f~'7RKy!G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %TgM-F,8  
*/ iW~f  
public void sort(int[] data) { [rsAY&.  
int[] temp=new int[data.length]; cA2]VL.r>C  
mergeSort(data,temp,0,data.length-1); yqI|BF`  
} ~A4WuA  
CNYchE,}  
private void mergeSort(int[] data,int[] temp,int l,int r){ ev >9P  
int mid=(l+r)/2; B ;$8<  
if(l==r) return ; 0u\@-np  
mergeSort(data,temp,l,mid); l}/UriZ0  
mergeSort(data,temp,mid+1,r); M6!brj\[|  
for(int i=l;i<=r;i++){ 7^=jv~>wP  
temp=data; ,u2<()`8D  
} @7'gr>_E  
int i1=l; [?*^&[  
int i2=mid+1; mJ7kOQ-.$  
for(int cur=l;cur<=r;cur++){ c= u ORt>  
if(i1==mid+1) mH .I!  
data[cur]=temp[i2++]; +8I0.,'  
else if(i2>r) a!]%@A6p  
data[cur]=temp[i1++]; 7yl'!uz)9  
else if(temp[i1] data[cur]=temp[i1++]; 0fU>L^P_?  
else blv6  
data[cur]=temp[i2++]; a@J :*W  
} 5GkM7Zu!{j  
} Z5A<TC/:  
w2[R&hJ  
} .`XA6e(8KR  
Lp=B? H  
改进后的归并排序: DYK|"@  
^XVa!s,d  
package org.rut.util.algorithm.support; (tN$G:+")F  
UxtZBNn8  
import org.rut.util.algorithm.SortUtil; m=V2xoMw6  
[y>.)BU  
/** K%Bi8d  
* @author treeroot XZGyhX7  
* @since 2006-2-2 {o`5&EoM  
* @version 1.0 'QU ?O[CH  
*/ a\E]ueVD2j  
public class ImprovedMergeSort implements SortUtil.Sort { _A r ,]v  
H#E0S>Jw|  
private static final int THRESHOLD = 10; Nl _Jp:8s  
 P_g  
/* |0-L08DW  
* (non-Javadoc) * =l9gv&  
* + aF jtb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pp jrm  
*/ nv]64mL3  
public void sort(int[] data) { 1S:H!h3  
int[] temp=new int[data.length]; :9Pqy pd+  
mergeSort(data,temp,0,data.length-1); yK^k*)2N  
} [f}1wZ*  
v( B4Bz2  
private void mergeSort(int[] data, int[] temp, int l, int r) { o ++Hdvai  
int i, j, k; C7PiuL?  
int mid = (l + r) / 2; C2v7(  
if (l == r) XjbK!.  
return; 6"(&lK\^  
if ((mid - l) >= THRESHOLD) ~@;7}Aag  
mergeSort(data, temp, l, mid); +6*I9R  
else t {}1 f  
insertSort(data, l, mid - l + 1); N}= - +E|  
if ((r - mid) > THRESHOLD) { L5m`-x  
mergeSort(data, temp, mid + 1, r); ~-/AKaK}  
else m/AN*` V  
insertSort(data, mid + 1, r - mid); O{V"'o  
qDW/8b\^  
for (i = l; i <= mid; i++) { edQ><lz  
temp = data; jG#sVK]  
} iVcBD0 q)  
for (j = 1; j <= r - mid; j++) { X1"nq]chGy  
temp[r - j + 1] = data[j + mid]; zqkmsFH{  
} 1Rh&04O>VL  
int a = temp[l]; t JP(eaqZ  
int b = temp[r]; y (A"g3^=  
for (i = l, j = r, k = l; k <= r; k++) { bOdD:=f  
if (a < b) { %O${EN  
data[k] = temp[i++]; mVLGQlvVK  
a = temp; BJ5#!I%h  
} else { #z.x3D@^r6  
data[k] = temp[j--]; 5{> cfN\q  
b = temp[j]; m[f\I^ \%8  
} %y q}4[S+o  
} xjpW<-)MLf  
} 53QP~[F8R]  
:`K;0`C +  
/** DH%X+r  
* @param data J98K:SAR  
* @param l ?0x;L/d])  
* @param i OZ6%AUot  
*/ z$NLFJvy_-  
private void insertSort(int[] data, int start, int len) { tj3p71%  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); BG"6jQh  
} EA\~m*k  
} 79v&6Io  
} K5$ y  
} !FO)||'[  
sIpK@BQ'  
堆排序: 3A5" %  
3]i1M%'i  
package org.rut.util.algorithm.support; C6`8dn   
RUEU n  
import org.rut.util.algorithm.SortUtil; "Xqj%\  
-Da_#_F  
/** Sv ,_G'  
* @author treeroot *sTQ9 Kr  
* @since 2006-2-2 $f+9svq  
* @version 1.0 bpzA ' g>  
*/ gS%J`X$  
public class HeapSort implements SortUtil.Sort{ }73H$ss:  
;3!TOY"j;e  
/* (non-Javadoc) {f)p|)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) seq$]  
*/ FD<~?-  
public void sort(int[] data) { 1gC=xMAT  
MaxHeap h=new MaxHeap(); b+3pu\w `  
h.init(data); ~VOmMw4HV  
for(int i=0;i h.remove(); G4i&:0  
System.arraycopy(h.queue,1,data,0,data.length); 4{Iz\:G:{/  
} . XmD[=  
:X^B1z3X4  
private static class MaxHeap{  tua+R_"  
Ii)TCSt9U?  
void init(int[] data){  7;XdTx  
this.queue=new int[data.length+1]; _AFgx8  
for(int i=0;i queue[++size]=data; 7Q`4*H6  
fixUp(size); wcO+P7g  
} AXyuXB  
} SG~R!kN}Q  
fKfi   
private int size=0; =<g\B?s]  
C}!|K0t?  
private int[] queue; [8"nRlXH  
WIg"m[aIs  
public int get() { NS1[-ng  
return queue[1]; ,MLPVDN*D  
} G~JQcJFj  
TzOf&cs/r  
public void remove() { tFGLqR%/  
SortUtil.swap(queue,1,size--); 'g#))y  
fixDown(1); b7$?'neH/.  
} CB~&!MdMr  
file://fixdown Bpgl U=Qr  
private void fixDown(int k) { ,Yo In  
int j; Gqs8$[o  
while ((j = k << 1) <= size) { SbB5J> >7J  
if (j < size %26amp;%26amp; queue[j] j++; Z'EZPuZ!'  
if (queue[k]>queue[j]) file://不用交换 rg`"m  
break; R\<^A~(Gl  
SortUtil.swap(queue,j,k); k: {$M yK  
k = j; ''Hq-Ng  
} 6ul34\;  
} pY2nv/  
private void fixUp(int k) { MG~^>  
while (k > 1) {  I{E10;  
int j = k >> 1; y]Y)?])  
if (queue[j]>queue[k]) W?$ ImW  
break; y]/{W}D  
SortUtil.swap(queue,j,k); ]`MRH[{  
k = j; { "/@,!9rJ  
} ;{>z\6N  
} Nk 7Q  
P"- ,^?6  
} X \h]N  
?0%lB=qQ  
} 39OZZaWL  
Bp}<H<@  
SortUtil: "8-]6p3u  
43/|[  
package org.rut.util.algorithm; x>t:&Y M  
Y A;S'dxY  
import org.rut.util.algorithm.support.BubbleSort; ;a68>5Lm*  
import org.rut.util.algorithm.support.HeapSort; W4Eo1 E  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'Ct+0X:D  
import org.rut.util.algorithm.support.ImprovedQuickSort; k\EMO\je  
import org.rut.util.algorithm.support.InsertSort; ?J>^X-z  
import org.rut.util.algorithm.support.MergeSort; 4 0Du*5M  
import org.rut.util.algorithm.support.QuickSort; ?-(E$ll  
import org.rut.util.algorithm.support.SelectionSort; T-27E$0  
import org.rut.util.algorithm.support.ShellSort; }g3)z%Xe'[  
{&/q\UQ  
/** 4b4nFRnH  
* @author treeroot D3I;5m`_  
* @since 2006-2-2 <uA|nYpp  
* @version 1.0 Z!#zr@'k  
*/ d/;oNC+  
public class SortUtil { 7Npz {C{I  
public final static int INSERT = 1; 39u!j|VH  
public final static int BUBBLE = 2; utQ_!3u  
public final static int SELECTION = 3; s,0,w--=  
public final static int SHELL = 4; e'u 9 SpJ  
public final static int QUICK = 5; T IS}'c'C  
public final static int IMPROVED_QUICK = 6; w{0UA6+  
public final static int MERGE = 7; ;VvqKyUh7`  
public final static int IMPROVED_MERGE = 8; #j@Su )+  
public final static int HEAP = 9; /9 [nogP  
eX}uZR  
public static void sort(int[] data) { VDscZt)y8  
sort(data, IMPROVED_QUICK); C[~b6 UP  
} E9 |i:  
private static String[] name={ h8nJ$jg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?+51 B-  
}; YncY_Hu  
bj7v<G|Y  
private static Sort[] impl=new Sort[]{ k{9s>l~'  
new InsertSort(), 5HmX-+XpK  
new BubbleSort(), wWwY .}j  
new SelectionSort(), KaOS!e'  
new ShellSort(), HmQuRW  
new QuickSort(), w2Pkw'a{  
new ImprovedQuickSort(), -[ F<u  
new MergeSort(), N>VA`+aFR  
new ImprovedMergeSort(), n- p|7N  
new HeapSort() Cgt{5  
}; Dtelr=/s  
Nk]r2^.z[  
public static String toString(int algorithm){ [t,7H  
return name[algorithm-1]; l^&#fz  
} V7 c7(G  
z )k\p'0"  
public static void sort(int[] data, int algorithm) { MA"DP7e?v  
impl[algorithm-1].sort(data); M7En%sBp  
} 7Sr7a {  
w${=]h*2  
public static interface Sort { Cvq2UNz(R  
public void sort(int[] data); "M2HiV  
} AOeptv^k3}  
3<?#*z4]_  
public static void swap(int[] data, int i, int j) { M,:GMO:?a  
int temp = data; kyz_r6  
data = data[j]; 5^[V%4y>  
data[j] = temp; WG< D+P  
} *YYm;J'  
} 8L.Y0_x  
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