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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。 K( MZ!>{  
插入排序: |iSwG=&  
+  rN#  
package org.rut.util.algorithm.support; \C;Yn6PK0  
L*Ffic  
import org.rut.util.algorithm.SortUtil; >W/mRv&  
/** j1Sjw6}GCH  
* @author treeroot w"M!**bP  
* @since 2006-2-2 %T<c8w}dP  
* @version 1.0 #>CWee;  
*/ rjfWty%6pX  
public class InsertSort implements SortUtil.Sort{ mDwuJf8}  
8EiS\$O-  
/* (non-Javadoc) P%[ { 'u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VWXyN  
*/ gQhYM7NP{5  
public void sort(int[] data) { c2GTN"  
int temp; k?3mFWc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qixnaiZ  
} _ !"[Zr  
} ]B&jMj~y&  
} A #pH$s  
fE|"g'  
} rWM5&M  
*6_>/!ywI  
冒泡排序: {RsdI=%  
rf^IJY[  
package org.rut.util.algorithm.support; 's"aPqF?  
0 >(hiT y<  
import org.rut.util.algorithm.SortUtil; W1M Bk[:Q  
4ee-tKH  
/** 0Iyb}  
* @author treeroot '|tmmoY6a:  
* @since 2006-2-2 Frx_aGLH1  
* @version 1.0 8&x&Ou$("V  
*/ /^~)iTwH  
public class BubbleSort implements SortUtil.Sort{ y(C',Xn  
44^jE{,9  
/* (non-Javadoc) ij_5=4aZ-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !YM:?%B  
*/ ~:0U.v_V  
public void sort(int[] data) { *&_(kq z'1  
int temp; |U~\;m@  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?v+el,  
if(data[j] SortUtil.swap(data,j,j-1); GIkVU6Q}  
} $G /p[JG6-  
} {>ghX_m |  
} >^@~}]L  
} Zwtz )ZII  
HR'F  
} 6_w~#86=  
bI;u};v  
选择排序: Xa U ^^K  
oC!z+<  
package org.rut.util.algorithm.support; wUS w 9xg  
}&l%>P  
import org.rut.util.algorithm.SortUtil; Q`=d5Uvw  
\$,;@H5I^  
/** k_OzkEM9!  
* @author treeroot 1NN#-U  
* @since 2006-2-2 &6\E'bBt  
* @version 1.0 >T14 J'\  
*/ '2p,0Bk9i  
public class SelectionSort implements SortUtil.Sort { *'@T+$3s  
"GxQ9=Z  
/* m$'ZiS5  
* (non-Javadoc) -OgC.6  
* ?O#"x{Pk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &x4|!" G  
*/ 9PR?'X;4  
public void sort(int[] data) { py/#h$eY  
int temp; ,G$<J0R1  
for (int i = 0; i < data.length; i++) { %x^U3"7  
int lowIndex = i; DnB :~&Dw  
for (int j = data.length - 1; j > i; j--) { \VAS<?3  
if (data[j] < data[lowIndex]) { 2;SiH]HNS  
lowIndex = j; @7?L+.r$9  
} K>2Bz&)  
} %F0.TR!!n  
SortUtil.swap(data,i,lowIndex); r;zG  
} 7x$VH5jie#  
} ^{O1+7d[.  
_6sSS\  
} FbD9G6h5  
lxLEYDGFS  
Shell排序: t8#u}u  
+=L^h9F  
package org.rut.util.algorithm.support; <)oW  
thh0~g0/  
import org.rut.util.algorithm.SortUtil; AHP;N6Y6  
[@$t35t~  
/** 7t% |s!~  
* @author treeroot Ch&2{ ng  
* @since 2006-2-2 ?ieC>cr  
* @version 1.0 bqZ5GKUo  
*/ s";9G^:  
public class ShellSort implements SortUtil.Sort{ Xf|I=XK  
~Y7:08  
/* (non-Javadoc) [jKhC<t}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JjH141 n%D  
*/ sH{(=N  
public void sort(int[] data) { /onZ14  
for(int i=data.length/2;i>2;i/=2){ D;oX*`  
for(int j=0;j insertSort(data,j,i); E*UE?4FSw|  
} ]6?6 k4@  
} v==/tr)  
insertSort(data,0,1); e6'y S81  
} ;<K#h9#*7  
rhwjsC6  
/** {= T9_c  
* @param data Y$eO:67;  
* @param j lMb&F[KJ7  
* @param i SOJkeN  
*/ mA\}zLw+r9  
private void insertSort(int[] data, int start, int inc) { WQltUaF  
int temp; v6'k`HnK  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8]% e[  
} J@(69&  
} /V E|FTs  
} 9.l*#A^  
ys} I~MK-  
} EpH\;25u  
;v%f +  
快速排序: n4Q ^   
^[hx`Rh`t  
package org.rut.util.algorithm.support; S,qEKWyLd  
jtQ}  
import org.rut.util.algorithm.SortUtil; OP\m~1  
$x q$  
/** *skmTioj&  
* @author treeroot E Ks4N4k  
* @since 2006-2-2 M:.0]'[s5  
* @version 1.0  D ~t  
*/ WKONK;U+7  
public class QuickSort implements SortUtil.Sort{ F+m;y  
CdNb&Nyz  
/* (non-Javadoc) e6I7N?j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o#=O5@>ai  
*/ "|d# +C  
public void sort(int[] data) { p2(Z(V7*  
quickSort(data,0,data.length-1); 7NQEnAl  
} a/lTQj]A  
private void quickSort(int[] data,int i,int j){ kuo!}QFL  
int pivotIndex=(i+j)/2; rc7^~S]5  
file://swap HV8=b"D"  
SortUtil.swap(data,pivotIndex,j); '>#8 F.  
,^&amWey  
int k=partition(data,i-1,j,data[j]); c#`&uLp  
SortUtil.swap(data,k,j); l !:kwF  
if((k-i)>1) quickSort(data,i,k-1); {1J4Q[N9m  
if((j-k)>1) quickSort(data,k+1,j); #b$qtp!,  
- ~`)V`@  
} 18G=j@k7  
/** f2Z(hYH~  
* @param data 9%^O-8!  
* @param i ?4YLt|sn  
* @param j DAx 1  
* @return |sPUb;&~  
*/ Yp;?Zq9  
private int partition(int[] data, int l, int r,int pivot) { J42/S [Rt  
do{ >AUzsQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `z<I<  
SortUtil.swap(data,l,r); 2 UPG8]  
} BKd?%V8:Q  
while(l SortUtil.swap(data,l,r); +W}6o3x~  
return l; V5bB$tL}3  
} LHd9q ^D  
*w[0uQL5Z  
} NbUbLzE  
M.fA5rJ^  
改进后的快速排序: "{M?,jP#  
$9?<mP2-*  
package org.rut.util.algorithm.support; hf< [$B  
ugS  
import org.rut.util.algorithm.SortUtil; @k||gQqIB  
Z90]I<a~  
/** Nd%j0lj  
* @author treeroot =&roL7ps  
* @since 2006-2-2 t-)d*|2n}o  
* @version 1.0 ]Yk)A.y  
*/ jAy 0k  
public class ImprovedQuickSort implements SortUtil.Sort { dnCurWjdk  
.g!K| c  
private static int MAX_STACK_SIZE=4096; *b\&R%6dR  
private static int THRESHOLD=10; z2[{3Kd*  
/* (non-Javadoc) K aNO&%qX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @k-iy-|3 )  
*/ +PKd </*]  
public void sort(int[] data) { 7,5Bur  
int[] stack=new int[MAX_STACK_SIZE]; `zsooA Gt  
nG0R1<  
int top=-1; (0^ZZe`# j  
int pivot; )_SpY\J  
int pivotIndex,l,r; :?SD#Vvrh.  
!TLJk]7uC  
stack[++top]=0; W}M 3z  
stack[++top]=data.length-1; cr~.],$Om  
V{n7KhN~Y!  
while(top>0){ W(Rp@=!C  
int j=stack[top--]; /o9 0O&  
int i=stack[top--]; l;}3J3/qq]  
O9_SVXWVw  
pivotIndex=(i+j)/2; 7R$O ~R3p  
pivot=data[pivotIndex]; t:*1* ;  
-mLS\TFS  
SortUtil.swap(data,pivotIndex,j); H7(D8.y )  
zV8{|-2]No  
file://partition z"f+;1  
l=i-1; vF1Fcp.@  
r=j; -9(pOwN |m  
do{ kbZpi`w  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]Wtg.y6;  
SortUtil.swap(data,l,r); I %|;M%B  
} lESv  
while(l SortUtil.swap(data,l,r); ^o4](l  
SortUtil.swap(data,l,j); cc0T b  
'PWA  
if((l-i)>THRESHOLD){ u9N /9  
stack[++top]=i; NiD_v  
stack[++top]=l-1; UHR%0ae  
}  Lr0:y o  
if((j-l)>THRESHOLD){ Y-lTPR<Eq  
stack[++top]=l+1; G%viWWTY  
stack[++top]=j; ( @V_47o  
} b*1yvkX5  
q1Mt5O}  
} m~-O}i~)  
file://new InsertSort().sort(data); 1@n'6!]6O  
insertSort(data); B[9y<FB+  
} 5&qBG@Hw]  
/** K%1`LT5:~  
* @param data ehTv@2b  
*/ 0X5b32  
private void insertSort(int[] data) { K #}t\  
int temp; h 27f0x9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^0&jy:{  
} nWA>u J5  
} w@pJ49  
} N9 h|_ax  
P=l 7m*m  
} *P8CzF^>\&  
X0]{8v%  
归并排序: ~ +h4i'  
hDXaCift  
package org.rut.util.algorithm.support; [9G=x[  
8*Ty`G&v  
import org.rut.util.algorithm.SortUtil; vIf-TQw  
[}yPy))A  
/** }46Zfg\T6n  
* @author treeroot }{)Rnb@ >  
* @since 2006-2-2 nDyA][  
* @version 1.0 hbEqb{#}@  
*/ _=}.Sg5Q  
public class MergeSort implements SortUtil.Sort{ g'cVsO)S  
$PRUzFZ  
/* (non-Javadoc) _r>kR7A\{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8:[ l1d86  
*/ |K9*><P?)2  
public void sort(int[] data) { ld3H"p rR  
int[] temp=new int[data.length]; EvH/d4V;  
mergeSort(data,temp,0,data.length-1); ae" o|Q  
} A]ZQ?- L/  
Mfnfp{.)  
private void mergeSort(int[] data,int[] temp,int l,int r){ %+/Dv  
int mid=(l+r)/2; sDAP'&  
if(l==r) return ; E1SWZ&';  
mergeSort(data,temp,l,mid); 5)A[NTNJx  
mergeSort(data,temp,mid+1,r); .5);W;`X  
for(int i=l;i<=r;i++){ q;*'V9#  
temp=data; ESUO I  
} (4?^X  
int i1=l; =cO5Nt  
int i2=mid+1; ?d+ri  
for(int cur=l;cur<=r;cur++){ [5tvdW6Z &  
if(i1==mid+1) hV:++g  
data[cur]=temp[i2++]; "!CVm{7[  
else if(i2>r) p=3t!3  
data[cur]=temp[i1++]; ;A4j_ 8\[  
else if(temp[i1] data[cur]=temp[i1++]; :zY;eJKm  
else f@[)*([  
data[cur]=temp[i2++]; F{^\vFp  
} Y`d@4*FN$  
} (V1;`sI8  
w 62m}5eA  
} [XttT  
(H"{r  
改进后的归并排序: 'n=bQ"bQu  
yEk|(6+^  
package org.rut.util.algorithm.support; }ice*3'3  
B!&y>Z^$  
import org.rut.util.algorithm.SortUtil; K1o>>388G  
l(Dr@LB~  
/** `Ns Q&G  
* @author treeroot !&:Cp_  
* @since 2006-2-2 ~`="tzr:  
* @version 1.0 ;K~=? k  
*/ {~w(pAx  
public class ImprovedMergeSort implements SortUtil.Sort { h(R7y@mp\0  
V'tR \b  
private static final int THRESHOLD = 10; HEAW](s  
% 8wBZ~1-  
/* x)Zb:"  
* (non-Javadoc) :,M+njcFc  
* ?zQW9e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &iZt(XD  
*/ K\xnQeS<W  
public void sort(int[] data) { QT zN  
int[] temp=new int[data.length]; `JY+3d,Ui  
mergeSort(data,temp,0,data.length-1); E)`0(Z:E  
} /KNR;n'  
J9OL>!J  
private void mergeSort(int[] data, int[] temp, int l, int r) { QAt]sat  
int i, j, k; ?3a=u<  
int mid = (l + r) / 2; V)`A,7X  
if (l == r) egBk7@Ko  
return; zyO=x 4U8  
if ((mid - l) >= THRESHOLD) ,i|K} Y&  
mergeSort(data, temp, l, mid); ^/$dSXKF  
else pJs`/   
insertSort(data, l, mid - l + 1); vq.o;q /  
if ((r - mid) > THRESHOLD) KC"&3  
mergeSort(data, temp, mid + 1, r); cJbv,RV<  
else tQRbNY#}Z  
insertSort(data, mid + 1, r - mid); GyMN;|  
ij#v_~g3  
for (i = l; i <= mid; i++) { i/I  
temp = data; ]*'_a@h  
} lNf);!}SM  
for (j = 1; j <= r - mid; j++) { Nsq=1) <  
temp[r - j + 1] = data[j + mid]; U<;{_!]  
} bq) 1'beW  
int a = temp[l]; S7WHOr9XMV  
int b = temp[r]; (n8?+GCa  
for (i = l, j = r, k = l; k <= r; k++) { )">#bu$  
if (a < b) { Q)BSngW+  
data[k] = temp[i++]; bcjh3WP  
a = temp; YFPse.2$a  
} else { pdER#7Tq  
data[k] = temp[j--]; Fx}v.A5  
b = temp[j]; *0Z6H-Do,  
} 3 !8#wn  
} (9ZW^flY  
} AZE%fOG<i  
)Ute  
/** kr|r-N`  
* @param data (T$cw(!  
* @param l 8(l0\R,%+z  
* @param i 5'+g[eNyBV  
*/ }No#_{  
private void insertSort(int[] data, int start, int len) { R.2i%cU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n0gjcDHQ  
} -?:8s v*X  
} lP)n$?u  
} 5+!yXkE^e  
} Pv,PS.,-  
j>?nL~{  
堆排序: :RukW.MR  
lK7:qo  
package org.rut.util.algorithm.support; }~=<7|N.  
@%2crJnkS  
import org.rut.util.algorithm.SortUtil; F):kF_ho  
$H.U ~  
/** WRkuPj2  
* @author treeroot W( sit;O  
* @since 2006-2-2 BeQ'\#q,  
* @version 1.0 Ix,b-C~  
*/ N0}[&rE 8  
public class HeapSort implements SortUtil.Sort{ "%+||IyW  
4[gbRn'  
/* (non-Javadoc) ": BZZ\!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R!7--]Wcg  
*/ "PElQBLP:  
public void sort(int[] data) { 3BGcDyYE  
MaxHeap h=new MaxHeap(); 9<y{:{i  
h.init(data); ME]7e^  
for(int i=0;i h.remove(); :|S[i('  
System.arraycopy(h.queue,1,data,0,data.length); E$4H;SN \  
} B8T5?bl  
w5s&Ws  
private static class MaxHeap{ w5)KWeGa  
"N_@q2zF  
void init(int[] data){ /O$~)2^h  
this.queue=new int[data.length+1]; Q.7X3A8  
for(int i=0;i queue[++size]=data; z1,#ma}.  
fixUp(size); m(:R(K(je  
} S1)g\Lv  
} ~N| aCi-X  
bA Yp }  
private int size=0; NX(IX6^y  
SeS ZMv  
private int[] queue; *c/|/  
%rnRy<9  
public int get() { YqXN|&  
return queue[1]; >7X5/z  
} 4IB`7QJq  
9 ;vES^  
public void remove() { ~2 XGw9`J2  
SortUtil.swap(queue,1,size--); jqj}j2 9  
fixDown(1); }*%=C!m4R!  
} >wb*kyO7(#  
file://fixdown )v+&l9D  
private void fixDown(int k) { oNl-! W   
int j; 5>CeFy  
while ((j = k << 1) <= size) { ,K6ODtw.  
if (j < size %26amp;%26amp; queue[j] j++; k5bv57@  
if (queue[k]>queue[j]) file://不用交换 h82y9($cZ  
break; &WAU[{4W  
SortUtil.swap(queue,j,k); +/n]9l]#h  
k = j; \8a014  
} !=;Evf  
} ?wmu 0rR  
private void fixUp(int k) { kn HrMD;  
while (k > 1) { XAF]B,h=  
int j = k >> 1; %jq R^F:J  
if (queue[j]>queue[k]) [a$1{[|)  
break; xOg|<Nnl  
SortUtil.swap(queue,j,k); *kF/yN  
k = j; jL5O{R[ x:  
} ^tm2Duv  
} ;UX9Em  
/i Xl] <  
} F$JA IL{W  
%Gu=Dkz  
} RiZ}cd  
hZUS#75M5  
SortUtil: jL4"FTcE]3  
RN1KM  
package org.rut.util.algorithm; hhylsm  
=8p[ (<F=  
import org.rut.util.algorithm.support.BubbleSort; W0U|XX!&  
import org.rut.util.algorithm.support.HeapSort; F/A)2 H_  
import org.rut.util.algorithm.support.ImprovedMergeSort; CnY dj~  
import org.rut.util.algorithm.support.ImprovedQuickSort; 4U)%JK.ta  
import org.rut.util.algorithm.support.InsertSort; $1)NYsSH/H  
import org.rut.util.algorithm.support.MergeSort; Sqmjf@o$>  
import org.rut.util.algorithm.support.QuickSort; Y%]g,mG  
import org.rut.util.algorithm.support.SelectionSort; 93w$ck},?G  
import org.rut.util.algorithm.support.ShellSort; e*Nm[*@UW  
UQ^ )t ]  
/** jl]p e7-  
* @author treeroot AC fhy[,  
* @since 2006-2-2 B1i'Mzm-4  
* @version 1.0 \[+':o`LH  
*/ Z Wx[@5  
public class SortUtil { QiRx2Z*\  
public final static int INSERT = 1; }!s$ / Kn  
public final static int BUBBLE = 2; [ CU8%%7  
public final static int SELECTION = 3; 55>+%@$,a  
public final static int SHELL = 4; c No)LF  
public final static int QUICK = 5; ,<OS: ]  
public final static int IMPROVED_QUICK = 6; Wk-. dJ  
public final static int MERGE = 7; ND 8;1+3  
public final static int IMPROVED_MERGE = 8; b_~KtMO  
public final static int HEAP = 9; ' e x/IqbK  
H0.&~!,*  
public static void sort(int[] data) { l$!NEOK  
sort(data, IMPROVED_QUICK); =<= [E:B  
} )In;nc  
private static String[] name={ X)[QEq^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j=>WWlZ  
}; e<Oz%  
V-i:t,*lk(  
private static Sort[] impl=new Sort[]{ Hpp;dG  
new InsertSort(), _1$+S0G;  
new BubbleSort(), F20%r 0  
new SelectionSort(), 1&kf2\S  
new ShellSort(), )=,;-&AR  
new QuickSort(), +#'QP#  
new ImprovedQuickSort(), Xd~lifF  
new MergeSort(), 2b#> ~  
new ImprovedMergeSort(), ?* dfIc  
new HeapSort() $~A\l@xAG  
}; zfml^N  
gp{P _  
public static String toString(int algorithm){ mA3yM#  
return name[algorithm-1]; hJJo+NNN  
} (jE[W:  
$:DhK  
public static void sort(int[] data, int algorithm) { hJ V*  
impl[algorithm-1].sort(data); <jVk}gi)Jp  
} k1FG$1.  
~BI! l  
public static interface Sort { < *{(>  
public void sort(int[] data); -f(< 2i  
} gBd~:ZUa  
_NbhWv  
public static void swap(int[] data, int i, int j) { dFpP_U  
int temp = data; L w/ZKXDU2  
data = data[j]; MS%h`Ypo  
data[j] = temp; N sSl|m  
} sWLH"'Z  
} WOGMt T%  
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