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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。 OsNJ;B  
插入排序: *[b22a4H(  
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package org.rut.util.algorithm.support; &v<Am%!N  
utBKl' `  
import org.rut.util.algorithm.SortUtil; o/mGd~  
/** %q_b\K  
* @author treeroot z-?WU  
* @since 2006-2-2  El |Y]f  
* @version 1.0 x4;ndck%U  
*/ YQ7tZl;:t  
public class InsertSort implements SortUtil.Sort{ >m8~Fs0  
QZamf lk  
/* (non-Javadoc) */A ~lR|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZoroK.N4A%  
*/ ,nz3S5~  
public void sort(int[] data) { 6:qh%ZR  
int temp; U$ 22r b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )P #MUC  
}  g\=e86  
} fkJElO-F  
} s)j3+@:#  
E  *{_=pX  
} )1o<}7  
>IE`, fe  
冒泡排序: J|:Zs1.<d  
{Q AV  
package org.rut.util.algorithm.support; ^6FU]  
!MQVtn^C#  
import org.rut.util.algorithm.SortUtil; F]6$4o[  
y rmi:=N(  
/** b]@@x;v$@  
* @author treeroot ]6z ; M;F`  
* @since 2006-2-2 ~oE@y6Q  
* @version 1.0 ?$0t @E  
*/ 8 ;o*c6+  
public class BubbleSort implements SortUtil.Sort{ l[M?"<Ot;  
;'4 HR+E"  
/* (non-Javadoc) ~<q^4w.=7C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (K3eb  
*/ ^ 9FRI9?  
public void sort(int[] data) { <F<jx"/)  
int temp; %M u$0~ct"  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l|5;&(Y+s  
if(data[j] SortUtil.swap(data,j,j-1); B dKD%CJ[  
} @"'$e_jj"  
} .fD%*-  
} ZA.i\ ;2  
} R>dd#`r"  
2~RG\JWTA  
} .Fm@OQr  
!TeI Jm/l  
选择排序: Bf{c4YiF  
QV9 z81[  
package org.rut.util.algorithm.support; jRNDi_u?Wb  
)jHH-=JM  
import org.rut.util.algorithm.SortUtil; B:=VMX~GE  
Ff{dOV.i  
/** _"G./X  
* @author treeroot od RtJ[   
* @since 2006-2-2 q o tWWe#  
* @version 1.0 zt/N)5\V  
*/ 8N9X1Mb|  
public class SelectionSort implements SortUtil.Sort { <U~at+M  
}<qT[m  
/*  NH0uK  
* (non-Javadoc) ~(K{D D7[N  
* eGj[%pk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5Za%EaW%G  
*/ ?<6yKxn  
public void sort(int[] data) { 0t(js_  
int temp; $&jte_hv  
for (int i = 0; i < data.length; i++) { =9L1Z \f  
int lowIndex = i; go B'C  
for (int j = data.length - 1; j > i; j--) { u @#fOu  
if (data[j] < data[lowIndex]) { p-JGDjR0G  
lowIndex = j; 2tI,`pSU  
} @tg4rl  
} f&NXWo/  
SortUtil.swap(data,i,lowIndex); B`wrr8"Rz  
} 0=Mu|G|Z  
} D'<'"kUd  
bW^JR,  
} 6gTc)rhRT  
OS sYmF  
Shell排序: DZqY=Sze  
vfloha p  
package org.rut.util.algorithm.support; O8)N`#1>+  
#9CLIYJAd  
import org.rut.util.algorithm.SortUtil; qUKSo9  
QZv}\C-c  
/** /[+%<5s  
* @author treeroot y{Vh?Z<E  
* @since 2006-2-2 SmVL?wf  
* @version 1.0 Q%n$IQr4gM  
*/ Z,7VOf6g  
public class ShellSort implements SortUtil.Sort{ !8OgaMngzF  
&AP`k  
/* (non-Javadoc) *I9O+/,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Js/QL=,  
*/ -T{G8@V0I  
public void sort(int[] data) { "WZ|   
for(int i=data.length/2;i>2;i/=2){ ][`%vj9r  
for(int j=0;j insertSort(data,j,i); E_T!|Q.  
} RJOW#e :  
} p,7, tx  
insertSort(data,0,1); \@m^w"Ij  
} _(F8}s  
ubUVxYD?  
/** 5&TH\2u  
* @param data {fa3"k_ke  
* @param j P$5K[Y4f  
* @param i VMH^jCFp  
*/ QJ2D C  
private void insertSort(int[] data, int start, int inc) { ':!aFMj^  
int temp; e-*-91D  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -rlCE-S  
} C1o^$Q|j  
} #eIFRNRb)  
} r$W%d[pB  
bk:mk[  
} KvXF zx|A  
ip!-~HNwJ  
快速排序: +F+M[ef<ws  
,-[z?dvO  
package org.rut.util.algorithm.support; 45;ey }8  
% O u'+A  
import org.rut.util.algorithm.SortUtil; xQkvK=~$  
a!B"WNb+  
/** CN:z *g  
* @author treeroot Dvm[W),(k  
* @since 2006-2-2 |dhKeg_  
* @version 1.0 :f~qt%%/  
*/ }/2M?W0  
public class QuickSort implements SortUtil.Sort{ (9Q@I8}Iy  
*" +u^  
/* (non-Javadoc) ZQ{-6VCjl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1P?|.W_^1  
*/ xSq{pxX  
public void sort(int[] data) { ^.PCQ~Ql  
quickSort(data,0,data.length-1); }CL7h;5N 3  
} oS^KC}X  
private void quickSort(int[] data,int i,int j){ qKTzigjj  
int pivotIndex=(i+j)/2; F}?4h Dt  
file://swap yt<h!k$ _P  
SortUtil.swap(data,pivotIndex,j); +`tk LvM  
Up5|tx7  
int k=partition(data,i-1,j,data[j]); E8BIb 'b;  
SortUtil.swap(data,k,j); &O#,"u/q`  
if((k-i)>1) quickSort(data,i,k-1);  fj'7\[nZ  
if((j-k)>1) quickSort(data,k+1,j); )3k?{1:  
>:HmIW0PLe  
} [Qcht,\^v  
/** EB VG@  
* @param data f+1@mGt  
* @param i QD%!a{I  
* @param j q _Z+H4  
* @return HI7w@V8Ed  
*/ -5JN`  
private int partition(int[] data, int l, int r,int pivot) { (AZAQ xt  
do{ glLoYRTi  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %77uc9}  
SortUtil.swap(data,l,r); d,toUI  
} l=ZD&uK  
while(l SortUtil.swap(data,l,r); _@W1?;yD  
return l; mM:%-I\$   
} -e"A)Bpl(  
T^vhhfCUr  
} ;GIA`=a %  
>wb Uxl%{5  
改进后的快速排序: b0Dco0U(  
Zz"8  
package org.rut.util.algorithm.support; dz!m8D0  
'q?Y5@s  
import org.rut.util.algorithm.SortUtil; 3 &mpn,  
E^A S65%bL  
/** Lv#0-+]$Bt  
* @author treeroot 0TZB}c#qT  
* @since 2006-2-2 sUU[QP-  
* @version 1.0 LI].*n/v  
*/ Q[ ?R{w6  
public class ImprovedQuickSort implements SortUtil.Sort { X9ZHYlr+Q  
tQas_K5  
private static int MAX_STACK_SIZE=4096; KWojMPs  
private static int THRESHOLD=10; +P8CC fPu  
/* (non-Javadoc) )ZI#F]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -K3d u&j  
*/ ea]qX6)UZ  
public void sort(int[] data) { ;wkMa;%`g|  
int[] stack=new int[MAX_STACK_SIZE]; Wf^ sl  
?U+hse3e~  
int top=-1; 2vh }:A_  
int pivot; <ZheWl  
int pivotIndex,l,r; hz*T"HJ]t  
6l[ v3l"t  
stack[++top]=0; `So/G  
stack[++top]=data.length-1; +(PUiiP'"v  
h8X[*Wme  
while(top>0){ XwFTAaZ  
int j=stack[top--]; bv VkN  
int i=stack[top--]; < Sgc6>)  
&>]U c%JK  
pivotIndex=(i+j)/2; 6~Dyr82"B  
pivot=data[pivotIndex]; * V7mM?  
Yxbg _RQm  
SortUtil.swap(data,pivotIndex,j); ="v`W'Pd  
eh> |m> JY  
file://partition r}es_9*~Z  
l=i-1; ?|98Y"w  
r=j; (~o"*1fk>  
do{ +80bG(I_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); P;o  {t  
SortUtil.swap(data,l,r); JsNj!aeU%  
} *5 .wwV  
while(l SortUtil.swap(data,l,r); 1y\bJ  
SortUtil.swap(data,l,j); @HPr;m!  
IT{c:jo1{`  
if((l-i)>THRESHOLD){ H(gY =  
stack[++top]=i; I;-Y2*  
stack[++top]=l-1; <b .p/uA  
} QkC*om'/!  
if((j-l)>THRESHOLD){ v0VQ4>  
stack[++top]=l+1; Ar[|M 2|  
stack[++top]=j; *hru);OJr  
} g$^-WmX\m  
c?e-2Dp(  
} YoW)]n  
file://new InsertSort().sort(data); S3l^h4  
insertSort(data); wU>Fz*  
} /,\U*'-  
/** 1Y*k"[?dW  
* @param data 8lzoiA_9  
*/ Le:C8^  
private void insertSort(int[] data) { [^s;Ggi9  
int temp; dW%t ph  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G;flj}z  
} q&J5(9]O|L  
} $y&W:  
} D=mmBo  
2|=hF9  
} 3qn_9f]  
B}[f]8jrM  
归并排序: 0&j90J$`  
0FtwDM))  
package org.rut.util.algorithm.support; zWhj >Za  
YLi6G Y  
import org.rut.util.algorithm.SortUtil; /AAD Fa  
p]EugLEmG  
/** ]"b:IWPeI  
* @author treeroot ?tL'  X  
* @since 2006-2-2 !p).3Kx0  
* @version 1.0 eG1V:%3  
*/ `WN80d\)&  
public class MergeSort implements SortUtil.Sort{ >5#}/G&  
bj}Lxc],  
/* (non-Javadoc) RrvC}9ar  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Ap9h# dK  
*/ Vy I\Jmr  
public void sort(int[] data) { bsDA&~)s  
int[] temp=new int[data.length]; ((+XzV>  
mergeSort(data,temp,0,data.length-1); r'jUB^E  
} &>C+5`bg  
"WuUMt  
private void mergeSort(int[] data,int[] temp,int l,int r){ mjWU0.  
int mid=(l+r)/2; Y|Q(JX  
if(l==r) return ; E`I(x&_  
mergeSort(data,temp,l,mid); ^;<d<V}*  
mergeSort(data,temp,mid+1,r); QMz=e  
for(int i=l;i<=r;i++){ c0'ryS_Z9  
temp=data; Hp04apM:  
} s$isDG#Sr  
int i1=l; lUB?eQuN_  
int i2=mid+1; &`@YdZtd"  
for(int cur=l;cur<=r;cur++){ D\&S {  
if(i1==mid+1) 84.L1|k  
data[cur]=temp[i2++]; -yBKA]"<I  
else if(i2>r) 8 E\zjT!#\  
data[cur]=temp[i1++]; PVp>L*|BZ;  
else if(temp[i1] data[cur]=temp[i1++]; <+g77NL  
else _*6]4\;  
data[cur]=temp[i2++]; tRJ5IX##L  
} 6vsA8u(|V#  
} eZAMV/]jH  
'0+~]4&}q  
} TT/H"Ri}Jp  
tngB;9c+w  
改进后的归并排序: n}.e(z_"  
Hs'~) T  
package org.rut.util.algorithm.support; n H?6o#]N  
\hgd&H0UU  
import org.rut.util.algorithm.SortUtil; P0}{xq'k9v  
=yZq]g6Q  
/** Zh;wQCDj  
* @author treeroot &Y?t  
* @since 2006-2-2 88v8lt;R  
* @version 1.0 0>Snps3*Z  
*/ .)b<cH~%  
public class ImprovedMergeSort implements SortUtil.Sort { (cOe*>L;  
d<7b<f"~  
private static final int THRESHOLD = 10; ?-<lIF Fh  
m%`YAD@2z  
/* jeWv~JA%L|  
* (non-Javadoc) &|{1Ws  
* cl4z%qv*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {73V?#P4  
*/ ^#<L!yo^  
public void sort(int[] data) { "ktuq\a@  
int[] temp=new int[data.length]; I{cH$jt<  
mergeSort(data,temp,0,data.length-1); K 77iv  
} G-T^1?  
B1)Eo2i#  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~^' ,4<K-}  
int i, j, k; F]yB=  
int mid = (l + r) / 2; !92e$GJ} ;  
if (l == r) 6/S. sj~  
return; y|ZL< L  
if ((mid - l) >= THRESHOLD) #j~FlY5  
mergeSort(data, temp, l, mid); }8x+F2i  
else "a)6g0gw  
insertSort(data, l, mid - l + 1); VQHB}Y@^  
if ((r - mid) > THRESHOLD) hU""YP ~y  
mergeSort(data, temp, mid + 1, r); AhN3~/u%7  
else V'j+)!w5  
insertSort(data, mid + 1, r - mid); xKSQz  
%m |I=P  
for (i = l; i <= mid; i++) { b!@PS$BTxq  
temp = data; ^7spXfSAd  
} a{T.U-0   
for (j = 1; j <= r - mid; j++) { &|Duc} t  
temp[r - j + 1] = data[j + mid]; ?"9h-g3`x}  
} >NBc-DX^  
int a = temp[l]; Njg$~30  
int b = temp[r]; BS##nS-[  
for (i = l, j = r, k = l; k <= r; k++) { Dm}eX:'{  
if (a < b) { 6/8K2_UeoW  
data[k] = temp[i++]; (NvjX})eh  
a = temp; T"z<D+ pN  
} else { Jr !BDg  
data[k] = temp[j--]; tdH[e0x B  
b = temp[j]; gPKf8{#%e  
} %LMpErZO  
} +Umsr  
} R|C`  
+<1 |apS1  
/** qS+;u`s  
* @param data Qjfgxy]  
* @param l rQimQ|+  
* @param i "sN%S's  
*/ $CEdJ+0z  
private void insertSort(int[] data, int start, int len) { cb9-~*1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U9:)qvMXe  
} t`H1]`c?  
} D!o[Sm}JO[  
} fIoc)T  
} 4$KDf;m@  
tS2 &S 6u  
堆排序: o%?)};o  
w[-)c6JyE  
package org.rut.util.algorithm.support; wN!\$i@E:  
P?h1nxm`'  
import org.rut.util.algorithm.SortUtil; T/'z,,Y  
Vn^GJ'^  
/** 0P5VbDv$r7  
* @author treeroot WVa%<  
* @since 2006-2-2 z^QrIl/<c2  
* @version 1.0 n?@zp<  
*/ s=n4'`y1  
public class HeapSort implements SortUtil.Sort{ ^w^e~0 S  
"#O9ij  
/* (non-Javadoc) d&Nnp jH}c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ynIC (t  
*/ uB  I/3aQ  
public void sort(int[] data) { g{]6*`/Z  
MaxHeap h=new MaxHeap(); #%;Uh  
h.init(data); .]vb\NBK7  
for(int i=0;i h.remove(); 3}H{4]*%_  
System.arraycopy(h.queue,1,data,0,data.length); ;_bRq:!j;  
} 0DicrnH8  
d{7ZO#E  
private static class MaxHeap{ "] V\Y!  
A2 + %  
void init(int[] data){ l}uZxKuYx  
this.queue=new int[data.length+1]; oK\zyNK  
for(int i=0;i queue[++size]=data; hU$o^ICH  
fixUp(size); Y#9W]78He  
} n|{K_! f  
}  =1Sny7G  
0/)2RmF  
private int size=0; -iR2UE@M  
dC({B3#e{  
private int[] queue; qf x*a88  
sG u.G  
public int get() { xT+_JT65  
return queue[1]; iM<$ n2t  
} inGUN??  
. }\8Y=  
public void remove() { *K|~]r(F?  
SortUtil.swap(queue,1,size--); u}nSdZC  
fixDown(1); %/Wk+r9uu  
} s:tX3X  
file://fixdown Z<.&fZ^jS  
private void fixDown(int k) { \\dUp>1=  
int j; `7=$I~`  
while ((j = k << 1) <= size) { sQ}|Lu9hZ  
if (j < size %26amp;%26amp; queue[j] j++; 3xy2ZYw  
if (queue[k]>queue[j]) file://不用交换 f5V-;  
break; v])ew|  
SortUtil.swap(queue,j,k); OE@[a  
k = j; Q7aPW\-  
} Jo { :]:  
} r'*$'QY-N  
private void fixUp(int k) { w7@`:W  
while (k > 1) { N#ggT9>X  
int j = k >> 1; i3w~&y-  
if (queue[j]>queue[k]) H'k}/<%Q  
break; \n[kzi7  
SortUtil.swap(queue,j,k); VCWW(Y1Fd  
k = j; !_ W/p`Tc  
} s/7Z.\  
} |}4\Gm  
f}bq  
} r84^/+"T  
~lo43$)^  
} C+TB>~Gv`  
Y%?S:&GH  
SortUtil: `q36`Wn  
'f<N7%eZ  
package org.rut.util.algorithm; s\;/U|P_  
F}}!e.>c  
import org.rut.util.algorithm.support.BubbleSort; #yH+ENp0   
import org.rut.util.algorithm.support.HeapSort; =de'Yy:\-  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8ao-]QoMZ  
import org.rut.util.algorithm.support.ImprovedQuickSort; |]9@JdmV  
import org.rut.util.algorithm.support.InsertSort;  T01Iu  
import org.rut.util.algorithm.support.MergeSort; OIPY,cj~  
import org.rut.util.algorithm.support.QuickSort; u!K1K3T6k  
import org.rut.util.algorithm.support.SelectionSort; FoetP`   
import org.rut.util.algorithm.support.ShellSort; 01'>[h#_n  
MDlH[PJ@i  
/** M.Yp'Av  
* @author treeroot C 7C4 eW8  
* @since 2006-2-2 ooVs8T2  
* @version 1.0 9ngxkOGx  
*/ w-n}&f  
public class SortUtil { <MbhBIejr  
public final static int INSERT = 1; uN)c!='I  
public final static int BUBBLE = 2; w^0hVrws=,  
public final static int SELECTION = 3; / dJz?0  
public final static int SHELL = 4; hVF^ "$  
public final static int QUICK = 5; iAz0 A  
public final static int IMPROVED_QUICK = 6; fmixWL7.Zg  
public final static int MERGE = 7; (\F9_y,6*\  
public final static int IMPROVED_MERGE = 8; 1b%Oi.;  
public final static int HEAP = 9; (I~   
n[Q(q[ULV  
public static void sort(int[] data) { r-y;"h'  
sort(data, IMPROVED_QUICK); _Ay^v#a  
} qSNCBn '  
private static String[] name={ UQDAql  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" q}Q G<%VR  
}; G!Brt&_'  
3Q$ 4`p;  
private static Sort[] impl=new Sort[]{ ;5ki$)v"  
new InsertSort(), N-K/jY  
new BubbleSort(), r!&174DSR1  
new SelectionSort(), B@(d5i{h  
new ShellSort(), r]!#v{#.  
new QuickSort(), 0#WN2f, <:  
new ImprovedQuickSort(), ?b+Y])SJK  
new MergeSort(), ~P'.R.e  
new ImprovedMergeSort(), 4gen,^Ij  
new HeapSort() }.A]=Ew  
}; !Vyf2xS"  
)h,y Q`.  
public static String toString(int algorithm){ _bCAZa&&  
return name[algorithm-1]; !i t orSl  
} WK6,K92  
-zFJ)!/?  
public static void sort(int[] data, int algorithm) { 6Hnez@d  
impl[algorithm-1].sort(data); Dz0D ^(;V  
} _8.TPB]no  
\8xSfe  
public static interface Sort { -yf8  
public void sort(int[] data); Q'n+K5&p  
} 23tX"e  
DO(};R%=  
public static void swap(int[] data, int i, int j) { 8_}t,BC  
int temp = data; oMEW5.VX  
data = data[j]; 0''p29  
data[j] = temp; P\MDD@  
} Q` &#u#  
} 66& uK|  
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3+5=?,请输入中文答案:八 正确答案:八