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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。 IxR:a(  
插入排序: 7B`0mK3  
%*=FLtBjo  
package org.rut.util.algorithm.support; )6WU&0>AU8  
8;3FTF  
import org.rut.util.algorithm.SortUtil; I =pdjD  
/** 75i)$}_1B  
* @author treeroot tjt#VFq?  
* @since 2006-2-2 H/f= 2b  
* @version 1.0 6V/mR~F1r  
*/ ]F! h~>  
public class InsertSort implements SortUtil.Sort{ ,fFJSY^  
$y}Tbm  
/* (non-Javadoc) zv@o- R$l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4HAfTQ 1G  
*/ ElxbHQj6  
public void sort(int[] data) { ']x]X ,  
int temp; s]OXB {M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <h[^&CY{  
} gO36tc:ce  
} dtm@G|Ij  
} tnntHQ&b  
'/?&Gol-  
} \W!<xE  
d[de5Xra  
冒泡排序: ;d:7\  
[ ]NAV  
package org.rut.util.algorithm.support; d1N&J`R\1  
;$]R#1i44  
import org.rut.util.algorithm.SortUtil; +r '  
[@(zGb8  
/** 'del|"h!M  
* @author treeroot phTZUm i  
* @since 2006-2-2 uE>}>6)b  
* @version 1.0 ( mycUU%  
*/ [KJm&\evp  
public class BubbleSort implements SortUtil.Sort{ #fwG~Q(  
`XTu$+  
/* (non-Javadoc) L3&NGcd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &u8BGMl2  
*/ Qv8Z64#  
public void sort(int[] data) { pNDL:vMWP  
int temp; X(/W|RY{@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %_5B"on  
if(data[j] SortUtil.swap(data,j,j-1); op[5]tjL  
} H!,#Z7s  
} !\CoJ.5=  
} ppS,9e-  
} 8J Gt|,  
ze]2-B4  
} n pBpYtG  
\9!W^i[+  
选择排序: +-1t]`9k4  
D^$Nn*i;U  
package org.rut.util.algorithm.support; Y&'Bl$`  
E$T)N U\  
import org.rut.util.algorithm.SortUtil; ?dY}xE  
}hv>LL  
/** PSNfh7g  
* @author treeroot aHvTbpJ  
* @since 2006-2-2 "hdc B 0  
* @version 1.0 LzEs_B=9  
*/ 9l5l"Wj&  
public class SelectionSort implements SortUtil.Sort { |t5K!?{i  
dq?{?~3  
/* E=+v1\t)]  
* (non-Javadoc) wM8Gz.9,  
* qc;9{$?xV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l$=Y(Xk  
*/ }@>=,A4Y  
public void sort(int[] data) { `'H"|WsT  
int temp; 3C{3"bP  
for (int i = 0; i < data.length; i++) { xj~5/)XX|X  
int lowIndex = i; o[pv.:w  
for (int j = data.length - 1; j > i; j--) { tEhYQZ  
if (data[j] < data[lowIndex]) { P(z#Wk  
lowIndex = j; {+Rf?'JZH  
} b"`Vn,  
} 6.]x@=Wm  
SortUtil.swap(data,i,lowIndex); k_A.aYe  
} ppv/ A4Kv  
} 7"L`|O?8)  
3:q\]]]S  
} [/.5{|&GSt  
Kv**(~FNnH  
Shell排序:  '%! '1si  
caA>; +aBH  
package org.rut.util.algorithm.support; L0j&p[(r  
P%Fkd3e+  
import org.rut.util.algorithm.SortUtil; 7nh,j <~;2  
A]VcQ_e  
/** C %l!"s^  
* @author treeroot ~=W|I:@  
* @since 2006-2-2 +-=o16*{ !  
* @version 1.0 #lA8yWxr  
*/ 3`9H  
public class ShellSort implements SortUtil.Sort{ } Qjp,(ye  
'BE &lW  
/* (non-Javadoc) IvLo&6swW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @=KuoIV  
*/ !P*1^8b`f  
public void sort(int[] data) { 8= jl]q$<  
for(int i=data.length/2;i>2;i/=2){ n-q  
for(int j=0;j insertSort(data,j,i); d ]LF5*i  
} @^Tof5?F?  
} "tu BfA+f  
insertSort(data,0,1); w#v8a$tT  
} hr%O4&sa  
"*o54z5"  
/** y#\jc4F_a  
* @param data L,Jl# S  
* @param j >YPC &@9   
* @param i esCm`?qCP  
*/ LqnN5l@ _B  
private void insertSort(int[] data, int start, int inc) { |%JJ S^)  
int temp; \79KU   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <{rRcFR  
} l#P)9$%  
} w_30g6tA  
} -!E))|A  
_akC^h T  
} qx0RCP /s  
J(*QtF  
快速排序:  SJY<#_b  
%-? :'F!1  
package org.rut.util.algorithm.support; (P;z* "q  
%JBFG.+  
import org.rut.util.algorithm.SortUtil; l"%|VWZ{iq  
Uf^zA/33  
/** YxH"*)N  
* @author treeroot %1Gat6V<'  
* @since 2006-2-2 Q9X7- \n  
* @version 1.0 ODn6%fp%  
*/ i3I'n*  
public class QuickSort implements SortUtil.Sort{ 5Z{h!}Y  
(fON\)l  
/* (non-Javadoc) g+8j$w}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %OWLM  
*/ ~2xC.DF_N  
public void sort(int[] data) { Ui6f>0?  
quickSort(data,0,data.length-1); d#:&Uw  
} Sfc0 ~1  
private void quickSort(int[] data,int i,int j){ S -j<O&h~C  
int pivotIndex=(i+j)/2; '| Enc"U  
file://swap `_Bvae j?,  
SortUtil.swap(data,pivotIndex,j); '0g1v7Gx  
loVUB'OSv  
int k=partition(data,i-1,j,data[j]); `{fqnNJE  
SortUtil.swap(data,k,j); G1MuH%4  
if((k-i)>1) quickSort(data,i,k-1); n*-t =DF  
if((j-k)>1) quickSort(data,k+1,j); usiv`.  
7sECbbJT  
} P 3uAS  
/** `6V-a_8;[  
* @param data )e.Y"5My  
* @param i 6'y+Ev$9  
* @param j LO@.aJpp  
* @return J<x?bIetj  
*/ gwk$|aT@  
private int partition(int[] data, int l, int r,int pivot) { {GDMix  
do{ PbOLN$hP  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g|*2O}<  
SortUtil.swap(data,l,r); l c)*HYqU  
} fq/F| c  
while(l SortUtil.swap(data,l,r); 6GCwc1g  
return l; ,j wU\xo`C  
} !}wJ+R ^2  
fLK*rK^{"  
} \3dM A_5  
A0.) =q  
改进后的快速排序: V%k[S|f3  
?&Si P-G  
package org.rut.util.algorithm.support; 2<}^m/}  
cSCO7L2E18  
import org.rut.util.algorithm.SortUtil; E",s]  
}h<\qvCcU  
/** 3/8o)9f.  
* @author treeroot ,Iq+v  
* @since 2006-2-2 V x1C4  
* @version 1.0 =O~1L m;  
*/ RC Fb&,51  
public class ImprovedQuickSort implements SortUtil.Sort { 7uJy<O  
]d?`3{h9LD  
private static int MAX_STACK_SIZE=4096; uy\< t  
private static int THRESHOLD=10; i'J.c4  
/* (non-Javadoc) F7J-@T<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L>$yslH; b  
*/ =zXpeo&|m  
public void sort(int[] data) { +]H9:ARI  
int[] stack=new int[MAX_STACK_SIZE]; !o~% F5|t  
fV*x2g7w  
int top=-1; y %Get  
int pivot; \1D~4Gz6}  
int pivotIndex,l,r; +<6L>ZAL  
QQP bKok>  
stack[++top]=0; ;[WW,,!Y  
stack[++top]=data.length-1; B, nCx=\S  
*%(8z~(\  
while(top>0){ yCkfAx8 ]  
int j=stack[top--]; JC`|GaUy  
int i=stack[top--]; 4]nU%`Z1w  
6PT ,m  
pivotIndex=(i+j)/2; +Y(cs&V*  
pivot=data[pivotIndex]; k\|G%0Jw  
Zoj.F  
SortUtil.swap(data,pivotIndex,j); a#FkoA~M  
w=d#y )1  
file://partition ElhTB  
l=i-1; 7{f&L '  
r=j; @/H1}pM~  
do{ t5N@ z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); is?`tre\P  
SortUtil.swap(data,l,r); hXM8`iFW5  
} eS fT +UL  
while(l SortUtil.swap(data,l,r); s4P8PDhz  
SortUtil.swap(data,l,j); 7^'TU=ss_  
HxAq& J;xu  
if((l-i)>THRESHOLD){ UBqA[9  
stack[++top]=i; OGg9e  
stack[++top]=l-1; soW.  
} Mcc774'*9  
if((j-l)>THRESHOLD){ +oBf\!{cW  
stack[++top]=l+1; UevbLt1Y  
stack[++top]=j; fL ng[&  
} (~xFd^W9o  
'?t]iRCeI7  
} k#R}^Q  
file://new InsertSort().sort(data); x68J [; jm  
insertSort(data); ma@ws,H  
} u$[ '}z0:  
/** yw"FI!M  
* @param data >4}+\ Q`S  
*/ |TF,Aj   
private void insertSort(int[] data) { Fzh%#z0  
int temp; Ttn=VX{ \  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uzG<(Q pu  
} O^G/(  
} kLMg|48fdI  
} \.myLkm  
(`GO@  
} HKv:)h{ ?  
9X,dV7 yW  
归并排序: dm,7OQ  
o4o&}  
package org.rut.util.algorithm.support; v3Tr6[9  
\    
import org.rut.util.algorithm.SortUtil; c_}i(HQ  
K8Gc5#OF  
/** T({:Y. A;  
* @author treeroot * gr{{c  
* @since 2006-2-2 X/lLM`  
* @version 1.0 .a:"B\B`  
*/ wblEx/FqE^  
public class MergeSort implements SortUtil.Sort{ Ge@./SGT  
'?E^\\"*  
/* (non-Javadoc) go m< V?$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Im{50%Y  
*/ E:4`x_~qQ  
public void sort(int[] data) { B @HW@j  
int[] temp=new int[data.length]; 15r,_Gp8  
mergeSort(data,temp,0,data.length-1); d,iW#,  
} Zq2dCp%  
"w9`UFu%^e  
private void mergeSort(int[] data,int[] temp,int l,int r){ M A}=  
int mid=(l+r)/2; _xI'p6C  
if(l==r) return ; #R"9(Q&  
mergeSort(data,temp,l,mid); BZQ98"Fz*  
mergeSort(data,temp,mid+1,r); zAC   
for(int i=l;i<=r;i++){ w3PE.A"Q  
temp=data; Km8btS]n  
} Zn1+} Z@I  
int i1=l; " _jIqj6C  
int i2=mid+1; *;Dd:D9  
for(int cur=l;cur<=r;cur++){ dI5Z*"`R9  
if(i1==mid+1) A@j;H|  
data[cur]=temp[i2++]; 1}tZ,w>  
else if(i2>r) l2+qP{_4  
data[cur]=temp[i1++]; sDK lbb  
else if(temp[i1] data[cur]=temp[i1++]; mwZesSxB_  
else Jn +[:s.  
data[cur]=temp[i2++]; ElZ'/l*\  
} gq*- v:P>  
} m}T^rX%m_  
Ow wH 45  
} Oq(_I b)9  
}.3F|H  
改进后的归并排序: K0@2>nR  
+)^F9LPl  
package org.rut.util.algorithm.support; 8U/q3@EC  
@4B+<,i   
import org.rut.util.algorithm.SortUtil; H?sl_3- #  
im>Sxu@  
/** miCt)Qd  
* @author treeroot FviLlly6  
* @since 2006-2-2 ({yuwH?tH  
* @version 1.0 4-eb&  
*/ : &mYz(1q  
public class ImprovedMergeSort implements SortUtil.Sort { j?i Ur2  
Kf76./  
private static final int THRESHOLD = 10; W'E!5T^  
.6 !IO^`[  
/* /u<lh. hPW  
* (non-Javadoc) }Y(Q7l  
* hqnJ@N$yY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cfyas'  
*/ k~>9,=::d  
public void sort(int[] data) { f~jx2?W  
int[] temp=new int[data.length]; +uM1#-+h  
mergeSort(data,temp,0,data.length-1); KZ6}),p  
} Fm3-Sn|Po  
#StD]d  
private void mergeSort(int[] data, int[] temp, int l, int r) { KunK.m  
int i, j, k; {p|OKf  
int mid = (l + r) / 2; gd_w;{WP  
if (l == r) 2xZg, \  
return; Y:^~KS=Uz  
if ((mid - l) >= THRESHOLD) 7$z")JB  
mergeSort(data, temp, l, mid); ibl^A=  
else HPCzh  
insertSort(data, l, mid - l + 1); }zj w\  
if ((r - mid) > THRESHOLD) #-'=)l}i1A  
mergeSort(data, temp, mid + 1, r); doBfpQ2  
else f?dNTfQ3mi  
insertSort(data, mid + 1, r - mid); Fla[YWS  
8d-; ;V  
for (i = l; i <= mid; i++) { Y6`9:97  
temp = data; PkLRQ}  
} j$Vv'on  
for (j = 1; j <= r - mid; j++) { .lb2`!'r&  
temp[r - j + 1] = data[j + mid]; Oe'Nn250  
} oZ& ns!#  
int a = temp[l]; YUF!Y9!  
int b = temp[r]; UQ$dO2^  
for (i = l, j = r, k = l; k <= r; k++) { Q#}} 1}Ja  
if (a < b) { H#E   
data[k] = temp[i++]; _R1UEE3M  
a = temp; 5dMIv<#T`  
} else {  k1L GT&  
data[k] = temp[j--];  s+[_5n~  
b = temp[j]; x]euNa  
} KA`1IW;  
} 1HN_  
} 6NO=NL  
*-ZD-B*?  
/** 37ll8  
* @param data B+jT|Y'  
* @param l E,xCfS)  
* @param i G 8uX[-L1  
*/ tW|B\p}  
private void insertSort(int[] data, int start, int len) { ;G0~f9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 7V4 iPx  
} N ]}Re$5  
} J6hWcA6 g  
} b/"gkFe#  
} vn .wM  
H5,{Z  
堆排序: `.MM|6  
q .tVNKy%  
package org.rut.util.algorithm.support; .W,< ]L '  
J%aW^+O  
import org.rut.util.algorithm.SortUtil; CLQ\Is^]  
\&R}JK  
/** *gMuo6  
* @author treeroot *7ap[YXZ\w  
* @since 2006-2-2 Wxjk}&+pVa  
* @version 1.0 2a5yJeaIv*  
*/ >/6v` 8F  
public class HeapSort implements SortUtil.Sort{ ~SV;"e2N.  
O_-.@uo./(  
/* (non-Javadoc) xO/44D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VEpIAC4  
*/ a+A/l  
public void sort(int[] data) { bkmX@+Pe  
MaxHeap h=new MaxHeap(); ksu:RJ-  
h.init(data); 5Lu m$C c}  
for(int i=0;i h.remove(); Cla Yy58v  
System.arraycopy(h.queue,1,data,0,data.length); K._1sOw'"Y  
} Z6K9E=%)c  
2J9eeN  
private static class MaxHeap{ )lB-D;3[_  
U=Z@Ipu5T  
void init(int[] data){ A"vI6ud>  
this.queue=new int[data.length+1]; "N4c>2Q  
for(int i=0;i queue[++size]=data; fN0D\Mu!)b  
fixUp(size); z]Ql/AK  
} [<wy @W  
} $N,9 e  
8'^eH1d'  
private int size=0; @{+*ea7M(`  
t,k9:p  
private int[] queue; +=\S"e[F  
<u->hT  
public int get() { o S_'@u.5  
return queue[1]; CdWGb[uI  
} %{zM> le9  
J)'6 z  
public void remove() { 7T4rx53  
SortUtil.swap(queue,1,size--); .?AtW:<*I  
fixDown(1); SB$~Btr  
} pC5-,Z;8  
file://fixdown Kz$Ijj  
private void fixDown(int k) { \sp7[}Sw  
int j; (O?z6g  
while ((j = k << 1) <= size) { gMHH3^\VH)  
if (j < size %26amp;%26amp; queue[j] j++; QXXcJc~  
if (queue[k]>queue[j]) file://不用交换 7yQ r  
break; y)s/\l&  
SortUtil.swap(queue,j,k); Ls|;gewp  
k = j; Xk7zXah  
} Aqp3amW!  
} xl# j_d,  
private void fixUp(int k) { =1\ 'xz}p?  
while (k > 1) { egr@:5QwZ{  
int j = k >> 1; !u7WCw.Dm  
if (queue[j]>queue[k]) ~x4Y57  
break; HF47Lc*c  
SortUtil.swap(queue,j,k); T}u'  
k = j; Or_9KX2  
} Nk=M  
} i"_f46r P  
\7og&j-h  
} WZFV8'  
&TK%igL  
} sjaG%f&h  
`P# h?tZ  
SortUtil: !w C4ei`  
r@ejU'uz  
package org.rut.util.algorithm; dF FB\|e;0  
8|J%IE  
import org.rut.util.algorithm.support.BubbleSort; .(`u'G=  
import org.rut.util.algorithm.support.HeapSort; >!a*wf~]  
import org.rut.util.algorithm.support.ImprovedMergeSort; wHIS}OONz  
import org.rut.util.algorithm.support.ImprovedQuickSort; > }:6m  
import org.rut.util.algorithm.support.InsertSort; ]+@b=J2b  
import org.rut.util.algorithm.support.MergeSort; =x[`W9.D  
import org.rut.util.algorithm.support.QuickSort; nY~CAo/:  
import org.rut.util.algorithm.support.SelectionSort; PDGh\Y[AK,  
import org.rut.util.algorithm.support.ShellSort; =)y=M!T2  
Zu+Z7@$}/  
/** .@[+05Yw  
* @author treeroot h|jsi*4NnL  
* @since 2006-2-2 xvrCm`3n@  
* @version 1.0 ?;i6eg17<  
*/ | @mZ]`p  
public class SortUtil { xQ$*K]VP  
public final static int INSERT = 1; 'X[3y^q  
public final static int BUBBLE = 2; E%40u.0  
public final static int SELECTION = 3; Yoaz|7LS  
public final static int SHELL = 4; z{tyB  
public final static int QUICK = 5; Z7%>O:@z  
public final static int IMPROVED_QUICK = 6; fQe-v_K  
public final static int MERGE = 7; ]54V9l:  
public final static int IMPROVED_MERGE = 8; A\ LTAp(I  
public final static int HEAP = 9; "lUw{3  
K_}vmB\2l  
public static void sort(int[] data) { <0lfkeD  
sort(data, IMPROVED_QUICK); uK t>6DN.  
} ?)JW}3<.  
private static String[] name={ rJg! 2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;AHa|35\  
}; Uu3[Cf=C  
BWQ (>Z"  
private static Sort[] impl=new Sort[]{ X,gXgxP\  
new InsertSort(), h05 ~ g  
new BubbleSort(), U?@UIhtM|  
new SelectionSort(), .|_+>){$w  
new ShellSort(), 9ft7  
new QuickSort(), bBg?x 4bu  
new ImprovedQuickSort(), &)`A4bf%  
new MergeSort(), XhTp'2,]  
new ImprovedMergeSort(), Ag}>gbz~G  
new HeapSort() 44b'40  
}; KcY 2lTvx  
N/^r9Nu  
public static String toString(int algorithm){ <5q:mG88  
return name[algorithm-1]; 8R-?x/:  
} fr:RiOPn  
R$cg\DD  
public static void sort(int[] data, int algorithm) { q/&Z6LJ)  
impl[algorithm-1].sort(data); x'n J_0  
} 0M:.Jhp  
_DH,$evS%  
public static interface Sort { >\KBXS}  
public void sort(int[] data); a0y;c@pkO  
} hOw7"'# !  
Rl$NiY?2  
public static void swap(int[] data, int i, int j) { +D$\^ <#  
int temp = data; |'1[\<MM3  
data = data[j]; Gu&zplB  
data[j] = temp; 0*,r  
} OTalR;:]r  
} .Ml}cE$L  
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