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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?f,`.*  
插入排序: 5}^08Xl  
L5|;VH  
package org.rut.util.algorithm.support; SE-, 1p  
Kz2^f@5=F  
import org.rut.util.algorithm.SortUtil; cw-JGqLx  
/** `0vy+T5  
* @author treeroot [&}<! :9'  
* @since 2006-2-2 ;%.k}R%O@  
* @version 1.0 6!PX! UkF  
*/ bIl0rx[`  
public class InsertSort implements SortUtil.Sort{ Gg,k  
T`0gtSS  
/* (non-Javadoc) *E q7r>[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3K] 0sr  
*/  G/;aZ  
public void sort(int[] data) { zgOwSg8  
int temp; b0CaoSWo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M@ZpgAfq  
} <T~fh>a  
} RpXGgw  
} k#G7`dJl  
QL!+.y%  
} iK0J{'  
HQj4h]O#  
冒泡排序: JWjp<{Q; 1  
+uXnFf d^  
package org.rut.util.algorithm.support; "JGig!9  
B9Tztg  
import org.rut.util.algorithm.SortUtil; \B +SzW  
oa|*-nw  
/** weadY,-H8  
* @author treeroot _@?Jx/`;bk  
* @since 2006-2-2 p%tg->#L  
* @version 1.0 90k|u'ikOp  
*/ rSCX$ @@F  
public class BubbleSort implements SortUtil.Sort{ nk.E q[08  
f3B8,>  
/* (non-Javadoc) 4T\/wyq0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^u&Khc~ y  
*/ T}x%=4<E  
public void sort(int[] data) { k"-#ox!  
int temp; eC:Q)%$%l  
for(int i=0;i for(int j=data.length-1;j>i;j--){ iz5wUyeg  
if(data[j] SortUtil.swap(data,j,j-1); xJ5!` #=  
} k(Xv&Zn  
} nezbmpL4  
} QRa6*AYm  
} vy y\^nL  
N>\?Aeh  
} {/!"}{G1e  
w:(7fu=  
选择排序: ExU|EN-  
``CADiM:S  
package org.rut.util.algorithm.support; vK~KeZ\,p=  
OvG|=  
import org.rut.util.algorithm.SortUtil; wA&)y>n-  
Y\S^DJy  
/** iFchD\E*o  
* @author treeroot (ZsR=:9(  
* @since 2006-2-2 .?]_yX  
* @version 1.0 /hR]aw  
*/ Mc^7FWkw  
public class SelectionSort implements SortUtil.Sort { ?LM'5  
mSeN M  
/* '~a$f;: Dv  
* (non-Javadoc) 2 ZXF_ o  
* "b7C0NE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IV*$U7~  
*/ b;ZAz  
public void sort(int[] data) { nP5fh_/  
int temp; 1OS3Gv8jc~  
for (int i = 0; i < data.length; i++) { POs~xaZ`H  
int lowIndex = i; cNv c pv  
for (int j = data.length - 1; j > i; j--) { ( "z;Q?(  
if (data[j] < data[lowIndex]) { 3&:fS|L~c  
lowIndex = j; qRLypm  
} 6%1o<{(%f  
} y Dw!u[:  
SortUtil.swap(data,i,lowIndex); sR nMBW.  
} X.|0E87  
} KK|Jach  
OUMr}~/  
} o|C{ s   
;wB  3H  
Shell排序: x*V<afLY[  
! .}{ f;Ls  
package org.rut.util.algorithm.support; pdqh'+5  
)Cfrqe1^  
import org.rut.util.algorithm.SortUtil; +2O_LPV$,  
4N: ;Mo&B  
/** Xpwom'  
* @author treeroot Ry3 f'gx  
* @since 2006-2-2 9B0"GEwrs  
* @version 1.0 Bk <P~-I  
*/ *h9vMks o  
public class ShellSort implements SortUtil.Sort{ s50ln&2  
#IDCCD^1=  
/* (non-Javadoc) ^123.Ru|t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $vz%   
*/ ^Yz05\  
public void sort(int[] data) { Z Z7U^#RT  
for(int i=data.length/2;i>2;i/=2){ $S{j}74[  
for(int j=0;j insertSort(data,j,i); }FVX5/.'  
} t68RWzqiG[  
} &.B6P|N'  
insertSort(data,0,1); bux-t3g7+  
} Fwqf4&/  
9f`Pi:*+/  
/** yjzNU5F  
* @param data Xi.?9J`@  
* @param j 2O/_hv.  
* @param i W9"I++~f  
*/ *6tN o-)^  
private void insertSort(int[] data, int start, int inc) { ak [)+_k_  
int temp; @( l`_Wx  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?f&I"\y  
} W[s>TDc`v  
} EM}z-@A>  
} 5{Wl(jwb  
H=C;g)R  
} UepBXt3)  
wP*Z/}Uum+  
快速排序: _!zY(9%  
3FN? CN] O  
package org.rut.util.algorithm.support; 3LR Eue7Gr  
vKf=t&gqr  
import org.rut.util.algorithm.SortUtil; g=Di2j{A  
-f=hL7NW  
/**  Km7  
* @author treeroot $(U|JR@  
* @since 2006-2-2 wn&2-m*a  
* @version 1.0 mZyTo/\0  
*/ wQT'~'kL  
public class QuickSort implements SortUtil.Sort{ L8ke*O$  
q0wVV  
/* (non-Javadoc) (6nw8vQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D2bUSRrb  
*/ .&y1gh!=  
public void sort(int[] data) { X[<9+Q-&  
quickSort(data,0,data.length-1); 0J~4  
} ~@JC1+  
private void quickSort(int[] data,int i,int j){ & j43DYw4  
int pivotIndex=(i+j)/2; L%FL{G  
file://swap hr5)$qZW  
SortUtil.swap(data,pivotIndex,j); 30@ GFaab  
^ dqEOW  
int k=partition(data,i-1,j,data[j]); 7_,gAE:kG  
SortUtil.swap(data,k,j); [@6iStRg7  
if((k-i)>1) quickSort(data,i,k-1); }^muAr  
if((j-k)>1) quickSort(data,k+1,j); e^yB9b  
jxvVp*-=<j  
} nP^$p C  
/** Npqbxb  
* @param data x<(h9tB  
* @param i /V&Y@j  
* @param j &^.'g{\Y  
* @return g5)VV"  
*/ iweP3u##  
private int partition(int[] data, int l, int r,int pivot) { @_{"ho  
do{ $4&Ql  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `c(@WK4  
SortUtil.swap(data,l,r); D6w0Y:A{.  
} 7nmo p7  
while(l SortUtil.swap(data,l,r); z( wXs&z;  
return l; Lmb<)YY  
} \IKr+wlN8  
(Gcl,IW  
} cc[w%jlA#  
yWzTHW`)Mr  
改进后的快速排序: Zu,f&smb  
*D,T}N  
package org.rut.util.algorithm.support; ZAE;$pkP  
'g#GUSXfj  
import org.rut.util.algorithm.SortUtil; {% P;O ?  
YdFCYSiS  
/** l _:%?4MA  
* @author treeroot )7^jq|  
* @since 2006-2-2 &kG<LGXP#  
* @version 1.0 c\Dv3bF  
*/ utr_fFu  
public class ImprovedQuickSort implements SortUtil.Sort { U^xFqJY6  
]9' \<uR  
private static int MAX_STACK_SIZE=4096; )l=j,4nn  
private static int THRESHOLD=10; v,jU9D \  
/* (non-Javadoc) <~d N23)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4P8:aZM  
*/ y ;;@T X  
public void sort(int[] data) { .eE5pyw+C  
int[] stack=new int[MAX_STACK_SIZE]; $)U RY~;i  
gnQd#`  
int top=-1; STI8[e7{  
int pivot; 1 !sYd@iD@  
int pivotIndex,l,r; Yr+&|;DB  
n#*cVB81  
stack[++top]=0; ?g'l/xuRe  
stack[++top]=data.length-1; \21!NPXH2  
jzQgD ed ]  
while(top>0){ 1n^xVk-G  
int j=stack[top--]; ~L2Fo~fw  
int i=stack[top--]; KnuqU2< {  
SC#  
pivotIndex=(i+j)/2; Vh&uSi1V  
pivot=data[pivotIndex]; }5K\ l  
iY="M_kQ_  
SortUtil.swap(data,pivotIndex,j); [lf[J&}X  
m\(a{x  
file://partition w"~T5%p  
l=i-1; zIu1oF4[  
r=j; H_{Yr+p  
do{ ,D8 Tca\v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); FX{Sb"  
SortUtil.swap(data,l,r); /O9z-!Jz  
} aa|xZ  
while(l SortUtil.swap(data,l,r); %EuSP0  
SortUtil.swap(data,l,j); `!i>fo~  
J? C"be=  
if((l-i)>THRESHOLD){ K$4Ky&89  
stack[++top]=i; =_5-z|<  
stack[++top]=l-1; [Mx+t3M  
} O?@AnkOhn  
if((j-l)>THRESHOLD){ s^cHR1^  
stack[++top]=l+1; [8ih-k  
stack[++top]=j; ;yr 'K  
} "zugnim  
?n}L+|  
} %NvY~,  
file://new InsertSort().sort(data); BwR)--75  
insertSort(data); IMj{n.y4  
} NOvN8.K%  
/** .A E(D7d6  
* @param data Yv>% 5`  
*/ =dPrG=A   
private void insertSort(int[] data) { |g~.]2az  
int temp; nkxVc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zJPzI{-w|  
} T a_#Rg*!  
} T!8,R{V]4  
} *cf#:5Nl  
z;T?2~g!  
} Gd!y,n&s  
@>:r'Fmu-  
归并排序: -{HA+YL H  
4oJ0,u  
package org.rut.util.algorithm.support; tlj^0  
YtFtU;{  
import org.rut.util.algorithm.SortUtil; % _N-:.S  
JMXCyDy;  
/** yJ?6BLJi  
* @author treeroot ~x2azY2DP  
* @since 2006-2-2 YM-,L-HMA  
* @version 1.0 Au9Rr3n  
*/ aPRF  
public class MergeSort implements SortUtil.Sort{ d+8Sypv^4*  
"lB[IB)  
/* (non-Javadoc) o]@?QAu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LqNsQu";  
*/ |(]XZ!{  
public void sort(int[] data) { 5~v({R.  
int[] temp=new int[data.length]; l2i[wc"9  
mergeSort(data,temp,0,data.length-1); Pwf":U)  
} HUZI7rC[=)  
^]K_k7`I  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,#nyEE  
int mid=(l+r)/2; Zv-#v  
if(l==r) return ; q.*k J/L  
mergeSort(data,temp,l,mid); _G@)Bj^*  
mergeSort(data,temp,mid+1,r); 3:s!0ty"  
for(int i=l;i<=r;i++){ G22u+ua  
temp=data; O.i.<VD7  
} C1hp2CW$5/  
int i1=l; Y f1?3 (0O  
int i2=mid+1; T< D&%)  
for(int cur=l;cur<=r;cur++){ ta %yQd7  
if(i1==mid+1) u{J$]%C   
data[cur]=temp[i2++]; `#R[x7bA1  
else if(i2>r) 13kl\ <6  
data[cur]=temp[i1++]; r[K%8Y8`  
else if(temp[i1] data[cur]=temp[i1++]; + JsMYv  
else vr"O9L w  
data[cur]=temp[i2++]; y2cYRHN[X}  
} PY[nnoF"|  
} :>f}rq  
JD9)Qelw^$  
} ZwM(H[iqL  
~m3Q^ue  
改进后的归并排序: 1aDx 6Mq  
.kcyw>T`I  
package org.rut.util.algorithm.support; <- L}N '  
-%,=%FBi~4  
import org.rut.util.algorithm.SortUtil; Xh+;$2l.B  
uVN2}3!)Y  
/** ?k@^U9?R  
* @author treeroot 3N257]  
* @since 2006-2-2 FF#T"y0Y  
* @version 1.0 HAwdu1$8  
*/ c^3,e/H  
public class ImprovedMergeSort implements SortUtil.Sort { g-?@a  
4 K5  
private static final int THRESHOLD = 10; T5|e\<l  
$O3.ex V  
/* 2ca#@??R  
* (non-Javadoc) T[Lz4;TRk5  
* 0RgE~x!hI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [4w*<({*  
*/ ,<k%'a!B  
public void sort(int[] data) { xqs ,4bcbY  
int[] temp=new int[data.length]; U$|q]N  
mergeSort(data,temp,0,data.length-1); ^hNl6)hR  
} 0 30LT$&!  
SSxp!E'  
private void mergeSort(int[] data, int[] temp, int l, int r) { .do8\  
int i, j, k; >dx/k)~~-L  
int mid = (l + r) / 2; oR7[[H.4  
if (l == r) kM J}sS  
return; 'i',M+0>jC  
if ((mid - l) >= THRESHOLD) 4_kY^"*#"  
mergeSort(data, temp, l, mid); =^1jVaAL  
else v*[UG^+)  
insertSort(data, l, mid - l + 1);  & .0A%  
if ((r - mid) > THRESHOLD) ?Z2`8]-E  
mergeSort(data, temp, mid + 1, r); , # =TputM  
else zOd* >  
insertSort(data, mid + 1, r - mid); P -NR]f  
f0vO(@I  
for (i = l; i <= mid; i++) { .fbY2b([  
temp = data; elAWQEu s  
}  9u^M{6  
for (j = 1; j <= r - mid; j++) { SIapY%)h  
temp[r - j + 1] = data[j + mid]; dP?prT  
} K[kK8i+(  
int a = temp[l];  QEg[  
int b = temp[r]; ~Oa$rqu%m  
for (i = l, j = r, k = l; k <= r; k++) { eZEk$W%  
if (a < b) { fX]`vjM{  
data[k] = temp[i++]; r1}^\C  
a = temp; "MU-&**  
} else { <l(n)|H1P  
data[k] = temp[j--]; MA,*$BgZ  
b = temp[j]; 9w- )??  
} D6A u)1y=&  
} .u>[m.  
} D%~tU70a  
7mq&]4-G  
/** m^!:n$  
* @param data d\uN  
* @param l =WjHf8v;  
* @param i LD ]-IX&L  
*/ N"}>);r  
private void insertSort(int[] data, int start, int len) { Xf_#O'z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Kf1J;*i|\  
} {;DAKWm@T  
} gu3iaM$W  
} 9v_s_QkL2  
} ||JUP}eP  
4XNheP;b  
堆排序: 3l%Qd<  
Sp492W+  
package org.rut.util.algorithm.support; @>HTbs6W  
U xBd14-R_  
import org.rut.util.algorithm.SortUtil; <Cv(@A->  
i}VF$XN  
/** \rF S^#  
* @author treeroot HwHF8#D*l  
* @since 2006-2-2 .26mB Xr  
* @version 1.0 pASX-rb  
*/ :D*U4< /u  
public class HeapSort implements SortUtil.Sort{ ux<|8S  
QkBw59L7  
/* (non-Javadoc) 0n{.96r0R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cc|W1,q  
*/ Z+&V  >  
public void sort(int[] data) { eAfi!!Z<  
MaxHeap h=new MaxHeap(); d.FU) )lmD  
h.init(data); rZKfb}ANQ  
for(int i=0;i h.remove(); BB6[(Z  
System.arraycopy(h.queue,1,data,0,data.length); SLKpl LO  
} 7v*gwBH  
5dm~yQN/  
private static class MaxHeap{ V4+ |D2   
YIg(^>sq  
void init(int[] data){ 5tYo! f  
this.queue=new int[data.length+1]; } :0_%=)N<  
for(int i=0;i queue[++size]=data; @|\9<S  
fixUp(size); n9'3~qVZ  
} E+aePoU  
} 4rU/2}. q  
uzBQK  
private int size=0; W:_-I4 q~  
B&]`OO>O  
private int[] queue; k7^hc th  
/'sv7hg+  
public int get() { vqSpF6F q  
return queue[1]; JT?u[p Q^  
} J8 qFdNK  
 >Uw:cq  
public void remove() { QQrldc(I  
SortUtil.swap(queue,1,size--); *'>_XX  
fixDown(1); A7% d  
} F w 0m(7  
file://fixdown F\m^slsu7=  
private void fixDown(int k) { p F{jIXu  
int j; (BEe^]f  
while ((j = k << 1) <= size) {  [E1qv;   
if (j < size %26amp;%26amp; queue[j] j++; 24 [KGp  
if (queue[k]>queue[j]) file://不用交换 =W~7fs  
break; rfqwxr45h  
SortUtil.swap(queue,j,k); P([!psgu  
k = j; YnEyL2SuU  
} j%6p:wDl  
} Sq5,}oT_{j  
private void fixUp(int k) { f/)Y {kS6  
while (k > 1) { 2lTt  
int j = k >> 1; |'h (S|  
if (queue[j]>queue[k]) N3%#JdzZ$  
break; _%e8GWf  
SortUtil.swap(queue,j,k); y\T$) XGV  
k = j; {KG}m'lx  
} jZA1fV  
} c,a8#Og  
QTHY{:Rmu  
} K2xB%m1LK  
1dN/H)]  
} QLJ\>  
~su>RolaX  
SortUtil: Qc7*p]E&  
xrf|c  
package org.rut.util.algorithm; $MR1 *_\V  
dcf,a<K\  
import org.rut.util.algorithm.support.BubbleSort; "Hw%@]#  
import org.rut.util.algorithm.support.HeapSort; In?rQiD9  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?/.])'&b  
import org.rut.util.algorithm.support.ImprovedQuickSort; #:?:gY<  
import org.rut.util.algorithm.support.InsertSort; C?H~L  
import org.rut.util.algorithm.support.MergeSort; Ae2N"%Ej  
import org.rut.util.algorithm.support.QuickSort; iHv+I~/  
import org.rut.util.algorithm.support.SelectionSort; <V^o.4mOg>  
import org.rut.util.algorithm.support.ShellSort; -b!?9T?}  
D"4*l5l  
/** I bD u+~)  
* @author treeroot <-1:o*8:}  
* @since 2006-2-2 cxR.:LD}  
* @version 1.0 }1 O"?6  
*/ ;r@=[h   
public class SortUtil { @fA{;@N  
public final static int INSERT = 1; `oMZ9Gq2E  
public final static int BUBBLE = 2; T={!/y+  
public final static int SELECTION = 3; + E{[j  
public final static int SHELL = 4; 8=D,`wog  
public final static int QUICK = 5; x_3B) &9  
public final static int IMPROVED_QUICK = 6; ?b7ttlX{  
public final static int MERGE = 7; 9,8/DW.K  
public final static int IMPROVED_MERGE = 8; =Htt'""DN  
public final static int HEAP = 9; GbLHzw  
VP!4Nob  
public static void sort(int[] data) { ,|*Gr"Q=  
sort(data, IMPROVED_QUICK); T'6`A<`3  
} 3/gR}\=  
private static String[] name={ O1\4WG%  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >)D=PvGlmp  
}; |cd "cx+  
/[?} LrDO  
private static Sort[] impl=new Sort[]{ 8Y-*rpLy  
new InsertSort(), e;v"d!H/  
new BubbleSort(), R?1Z[N  
new SelectionSort(), b"\lF1Nf&o  
new ShellSort(), p"P+8"`  
new QuickSort(), Q&0`(okb  
new ImprovedQuickSort(), &yP|t":HWX  
new MergeSort(), u"zR_CzYc  
new ImprovedMergeSort(), K Zg NL|  
new HeapSort() NU_^*@k  
}; ZklO9Ox(  
>&\.{ aj  
public static String toString(int algorithm){ }J?,?>Z  
return name[algorithm-1]; [4xZy5V  
} .,6o):  
;i.MDW^N  
public static void sort(int[] data, int algorithm) { dG+$!*6Z  
impl[algorithm-1].sort(data); \5tG>>c i  
} y_>DszRN`u  
z#Qe$`4&  
public static interface Sort { \A^8KVE!  
public void sort(int[] data); `StuUa  
} -uN{28;@  
#)n$Q^9&  
public static void swap(int[] data, int i, int j) { ea O'|@;{~  
int temp = data; )a0l:jEOc  
data = data[j]; i+5Qs-dHA  
data[j] = temp; kI a16m  
} PZru:.Mh  
} <o9i;[+H-  
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