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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。 *Jcd_D\-(1  
插入排序: J[l7p6xk  
a=ZVKb  
package org.rut.util.algorithm.support; H5d@TB, `  
56YqYu.  
import org.rut.util.algorithm.SortUtil; ='.b/]!_  
/** 0 J"g"=  
* @author treeroot u `ww  
* @since 2006-2-2 l$!ExXEZO;  
* @version 1.0 V"8Go;[  
*/ &&$*MHJ  
public class InsertSort implements SortUtil.Sort{ 3-{WFnA  
b&E"r*i|  
/* (non-Javadoc) M3UC9t9]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J0k!&d8  
*/ Tr>_R%bK  
public void sort(int[] data) { 9E5*%Hu_  
int temp; yT<"?S>D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 93Gj#Mk  
} IIMf\JdM  
} T*B`8P  
} 'S}3lsIE  
hB<(~L? A]  
} _T.`+0UV  
+Goh`!$Rj9  
冒泡排序: |#t^D.j  
!ckluj  
package org.rut.util.algorithm.support; IX 6 jb"  
}Uj-R3]}K  
import org.rut.util.algorithm.SortUtil; CEkf0%YJ  
p);[;S  
/** d\Up6F  
* @author treeroot jK\kASwG  
* @since 2006-2-2 SefF Ci%4  
* @version 1.0 ~)pZ5%C  
*/ 0;1O;JRw  
public class BubbleSort implements SortUtil.Sort{ {7X9P<<L7  
cfBl HeYE  
/* (non-Javadoc) qldm"Ul  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o4a@{nt^,  
*/ dw}ge,bBic  
public void sort(int[] data) { 6Yva4Lv  
int temp; $&, KZ>  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3`3my=   
if(data[j] SortUtil.swap(data,j,j-1); oP 7)  
} 0ZD)(ps|  
} u9q#L.Ij  
} Mf5*Wjz.Mc  
} kG4])qxC'  
ZBK)rmhMx  
}  R'_F9\  
V@G|2ZI  
选择排序: p+nB@fN/  
o@$py U8  
package org.rut.util.algorithm.support; 4%yeEc ;z  
UY *Z`$  
import org.rut.util.algorithm.SortUtil; (3x2^M8  
]~3a~  
/** n|.>41bJ  
* @author treeroot Xa'b @*o&  
* @since 2006-2-2 UBnHtsM  
* @version 1.0 +:C.G[+  
*/ g_Y$5ft`  
public class SelectionSort implements SortUtil.Sort { Q 'e[(^8  
%t.\J:WN;  
/* ?6\A$?  
* (non-Javadoc) ~2Mcw`<  
* 7O=7lQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C?g*c  
*/ N4yQ,tG>aa  
public void sort(int[] data) { @[$q1Nm  
int temp; +q432ZG  
for (int i = 0; i < data.length; i++) { ll"6K I'X  
int lowIndex = i; 7W/55ZTmJ  
for (int j = data.length - 1; j > i; j--) { `9f7H  
if (data[j] < data[lowIndex]) { pug;1UZ  
lowIndex = j; DQN"85AIZ  
} :G<~x8]k0  
} YMwL(m1  
SortUtil.swap(data,i,lowIndex); i~DLo3  
} UPuG&A#VV  
} RL"hAUs_1  
1[Jv9S*f/  
} >hotkMX `3  
OBM&N  
Shell排序: V\%s)kq  
2 :^  
package org.rut.util.algorithm.support; l2 #^}-  
u&Xn#f h  
import org.rut.util.algorithm.SortUtil; 0o?2Sf`L\*  
u |ru$cIo  
/** _ba.oIc  
* @author treeroot /T<,vR  
* @since 2006-2-2 2\xEMec  
* @version 1.0 KJ6:ZTbW  
*/ o2riy'~  
public class ShellSort implements SortUtil.Sort{ Ac Y!  
+,0 :L :a  
/* (non-Javadoc) YksJ$yH^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lz0'E'%{P  
*/ hL/  
public void sort(int[] data) { {F$MZ2E  
for(int i=data.length/2;i>2;i/=2){ LsV?b*^(p  
for(int j=0;j insertSort(data,j,i); IlP@a[:_  
} McQWZ<  
} BxXP]od  
insertSort(data,0,1); |Z{ DU(?[b  
} - z"D_5  
bQ_N^[oxQ  
/** k3B]u.Lo  
* @param data F,$ypGr  
* @param j m"8Gh `Fo  
* @param i x5nw/''[2  
*/ ,W&::/2<7  
private void insertSort(int[] data, int start, int inc) { 5Og=`T  
int temp; "0A !fRI~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0RGSv!w  
} %N-f9o8  
} YumHECej  
} oSqkAAGz\  
[n;GP@A ]R  
} XnI)s^  
d+:pZ  
快速排序: IgU65p  
x3?:"D2  
package org.rut.util.algorithm.support; B[6y2+6$0  
OBmmOswg~  
import org.rut.util.algorithm.SortUtil; ax+P) yz  
:%vD hMHa  
/** #i~2C@]  
* @author treeroot )'gO?cN  
* @since 2006-2-2 /MQI5Djg  
* @version 1.0 $j!VJGVG  
*/ 7IH^5r  
public class QuickSort implements SortUtil.Sort{ |LNAd:0  
^(8(z@y  
/* (non-Javadoc) /iekww^54  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L[FNr&  
*/ c|^#v8x^/  
public void sort(int[] data) { %.*?i9}  
quickSort(data,0,data.length-1); n9Xssl0  
} Kn<z<>vO  
private void quickSort(int[] data,int i,int j){ !F&Ss|(}  
int pivotIndex=(i+j)/2; /_ MEb42&  
file://swap cfEi]  
SortUtil.swap(data,pivotIndex,j); 2m/=0sb\{  
'v*Y7zZ#K  
int k=partition(data,i-1,j,data[j]); .U:DuyT  
SortUtil.swap(data,k,j); [J.-gN$X@  
if((k-i)>1) quickSort(data,i,k-1); zS##YR  
if((j-k)>1) quickSort(data,k+1,j); +W P  
m!-,K8  
} H7"m/Bia  
/** <_"^eF+fZ  
* @param data E1e#E3Yq}s  
* @param i " %)zTH  
* @param j :7+E fu  
* @return $'2yPoR  
*/ p;VHg  
private int partition(int[] data, int l, int r,int pivot) { L3g}Z1<!$  
do{ :b_R1ZV|  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4d*=gy%  
SortUtil.swap(data,l,r); H/Fq'FsQB  
} !@x'?+   
while(l SortUtil.swap(data,l,r); #D-L>7,jA  
return l; qs]7S^yw  
} $`&uu  
}.UE<>OX  
} iX{Lc+u3  
_DK%-,Spu  
改进后的快速排序: f;;(Q-.  
3K57xJzK  
package org.rut.util.algorithm.support; 'y?(s+  
'v"{frh   
import org.rut.util.algorithm.SortUtil; G=lket6  
_lE0_X|d  
/** $0MP*TFWa  
* @author treeroot aBO%qmtt  
* @since 2006-2-2 MWS=$N)v*  
* @version 1.0 5`B ! 1  
*/ p v2u.qg5z  
public class ImprovedQuickSort implements SortUtil.Sort { mGmkeD'  
XY;cz  
private static int MAX_STACK_SIZE=4096; ?4U|6|1  
private static int THRESHOLD=10; '}D$"2I*  
/* (non-Javadoc) ^=nJ,-(h_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rU /V ~;#%  
*/ y:N QLL>  
public void sort(int[] data) { >e7w!v]  
int[] stack=new int[MAX_STACK_SIZE]; ;n Pjyu'g  
=2z9Aq{  
int top=-1; $Y!$I.+  
int pivot; q>T7};5m2  
int pivotIndex,l,r; xi]qdiA  
SV4a_m?  
stack[++top]=0; qe!\ oh  
stack[++top]=data.length-1; Ed%8| M3  
+a%Vp!y  
while(top>0){ 8jE6zS }m  
int j=stack[top--]; ?=%Q$|]-  
int i=stack[top--]; /\S1p3EW*  
c8cV{}7Kb  
pivotIndex=(i+j)/2; 4wZ{Z 2w  
pivot=data[pivotIndex]; H h4G3h0  
l%?D%'afN  
SortUtil.swap(data,pivotIndex,j); ?t&sT  
I$o^F/RH  
file://partition Xi]WDH \  
l=i-1; :RsO $@0G  
r=j; W?a2P6mAh  
do{ \(PC#H%  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A Z7  
SortUtil.swap(data,l,r); b5hJaXJN  
} \4RVJ[2  
while(l SortUtil.swap(data,l,r); [Yx)`e  
SortUtil.swap(data,l,j); F)we^'X  
x(/KHpSWK  
if((l-i)>THRESHOLD){ `.f {V  
stack[++top]=i; (~~*PT-  
stack[++top]=l-1; m@hmu}qz-  
} ESk<*-  
if((j-l)>THRESHOLD){ nR7 usL  
stack[++top]=l+1; LFsrqdzJ  
stack[++top]=j; VZ?"yUZ Id  
} jXEuK:exQ  
&u62@ug#}  
} ~c>*3*  
file://new InsertSort().sort(data); r)P^CZm  
insertSort(data); V6.xp{[  
} :"+/M{qz  
/** ~Qzb<^9]  
* @param data |=C&JA  
*/ -2}-;|  
private void insertSort(int[] data) { EP.nVvuL  
int temp; V[<]BOM\v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2IgTB|2  
} bi:m;R  
} S^,1N 4  
} cPh U q ET  
U$[C>~r  
} ;[*jLi,uc  
-aCtk$3  
归并排序: c+PT"/3  
nJJ9>#<g$  
package org.rut.util.algorithm.support; VvuwgJX  
+.N3kH  
import org.rut.util.algorithm.SortUtil; 0MK|spc  
G1 ?."  
/** +8e~jf3E1  
* @author treeroot | ,bCYK  
* @since 2006-2-2 __p\`3(,'  
* @version 1.0 E DuLgg@  
*/ Qe=,EXf  
public class MergeSort implements SortUtil.Sort{ k!e \O>+  
2|vArRKt  
/* (non-Javadoc) > }#h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &61;v@  
*/ 7Y$#* 7  
public void sort(int[] data) { W2L:  
int[] temp=new int[data.length]; D9H(kk  
mergeSort(data,temp,0,data.length-1); +NGjDa  
} [6@{^  
sY4sq5'!  
private void mergeSort(int[] data,int[] temp,int l,int r){ %T]NM3|U  
int mid=(l+r)/2; IwC4fcZX6  
if(l==r) return ; 0be1aY;m&  
mergeSort(data,temp,l,mid); 8spoDb.S  
mergeSort(data,temp,mid+1,r); 2@``=0z  
for(int i=l;i<=r;i++){ =M"H~;f]  
temp=data; `UFRv   
} L,*KgLG  
int i1=l; yT Pi/=G  
int i2=mid+1; 6X(Yv2X&4%  
for(int cur=l;cur<=r;cur++){ !w['@x.  
if(i1==mid+1) +0U{CmH  
data[cur]=temp[i2++];  zk8 o[4  
else if(i2>r) rrK&XP&  
data[cur]=temp[i1++]; f,9jK9/$  
else if(temp[i1] data[cur]=temp[i1++]; (~F{c0 \C  
else O5HK2Xg,C  
data[cur]=temp[i2++]; V5y8VT=I  
} hC ^|  
} 1iq,Gd-G.  
Fy|tKMhnc  
} *"V5j#F_  
av>c  
改进后的归并排序: E"l&<U  
n}9vAvC  
package org.rut.util.algorithm.support; 6AeX$>k+  
-lHSojq~H  
import org.rut.util.algorithm.SortUtil; fj X~"U  
ZD{%0 uh  
/** +]|aACt]  
* @author treeroot hzIP ?0^E  
* @since 2006-2-2 7.fpGzUM  
* @version 1.0 WPVur{?<  
*/ _jK    
public class ImprovedMergeSort implements SortUtil.Sort { zoXCMBg[  
&V5[Zj|]  
private static final int THRESHOLD = 10; f}q4~NPn-  
,]?Xf >  
/* =[%ge{,t  
* (non-Javadoc) :USN`"  
* *Dr-{\9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 12 HBq8o  
*/ `]^0lD=eI  
public void sort(int[] data) { jf0D  
int[] temp=new int[data.length]; OjxaA[$  
mergeSort(data,temp,0,data.length-1); 2XhtK  
} sg"J00  
7Q,9j.  
private void mergeSort(int[] data, int[] temp, int l, int r) { B6)d2O9C  
int i, j, k; D Q7+  
int mid = (l + r) / 2; USz |Rh  
if (l == r) ;xFx%^M}br  
return; 3`PPTG  
if ((mid - l) >= THRESHOLD) j-wSsjLk  
mergeSort(data, temp, l, mid); *yJCnoF  
else oTOr,Mn0\6  
insertSort(data, l, mid - l + 1); R;,&s!\<  
if ((r - mid) > THRESHOLD) n4Fh*d ixg  
mergeSort(data, temp, mid + 1, r); 8A/;a{   
else Wyu$J  
insertSort(data, mid + 1, r - mid); /]H6'  
4|Z;EAFx  
for (i = l; i <= mid; i++) { %H=d_Nm{  
temp = data; C?@vBM}  
} n_;qB7,,  
for (j = 1; j <= r - mid; j++) { N3?hyR<T  
temp[r - j + 1] = data[j + mid]; E$5)]<p! <  
} dQ6:c7hp>D  
int a = temp[l]; [{.e1s<EK  
int b = temp[r]; Q 6djfEN>  
for (i = l, j = r, k = l; k <= r; k++) { OiI[w8  
if (a < b) { #<ppiu$  
data[k] = temp[i++]; *Ag</g@ h  
a = temp; AR9D;YfR~  
} else { j)4:*R.Z]  
data[k] = temp[j--]; +_Nr a  
b = temp[j]; ,ra!O=d~0  
} S a5+_TW  
} -dXlGOD+C  
} ? b;_T,S[  
6*`KC)a  
/** 6 &~8TH  
* @param data qEvHrsw},  
* @param l Rh!B4oB4  
* @param i MfNxd 6w  
*/ V1Yab#  
private void insertSort(int[] data, int start, int len) { *_G(*yAe(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O;RsYs9  
} +X[+SF)!  
} o&]b\dV  
} t']d_Vcza  
} Ewjzm,2  
N{L'Q0!  
堆排序: H&K(,4u^  
i}cqV B?r  
package org.rut.util.algorithm.support; ]dzBm!u  
#CKPNk c  
import org.rut.util.algorithm.SortUtil; )!+M\fT  
8U,VpuQ:  
/** E(J@A'cX  
* @author treeroot /.1c <!  
* @since 2006-2-2 Dqss/vwV  
* @version 1.0 %@/"BF;r  
*/ +/u)/ey  
public class HeapSort implements SortUtil.Sort{ E`#m0Q(8  
RLBeti>  
/* (non-Javadoc) x*}41;j}C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wf47Ulx  
*/ A*d Pw.  
public void sort(int[] data) { 32y GIRV  
MaxHeap h=new MaxHeap(); gDHgXD D_b  
h.init(data); ? yL3XB>  
for(int i=0;i h.remove(); T(LqR?xOo  
System.arraycopy(h.queue,1,data,0,data.length); WZz8VF  
} Cjh0 .{  
>eX&HSoy  
private static class MaxHeap{ GM&< ?K1  
HgH\2QL3&  
void init(int[] data){ }xZR`xP(  
this.queue=new int[data.length+1]; +NML>g#F~z  
for(int i=0;i queue[++size]=data; ra87~kj<  
fixUp(size); 8 xfn$  
} Y0nnn  
} pq8XCOllXx  
;U7o)A;  
private int size=0; 9a\H+Y~  
Ziclw)   
private int[] queue; ;bz|)[4/  
"Zk# bQ2j  
public int get() { <sU?q<MC  
return queue[1]; WiDl[l"{9  
} ckn0I  
m\9R;$ \  
public void remove() { W 7xh  
SortUtil.swap(queue,1,size--); zNAID-5K;  
fixDown(1); h"~i&T h  
} m9yi:zT%  
file://fixdown ?'RB)M=Og7  
private void fixDown(int k) { E?\&OeAkO  
int j; n7Em t$Hi>  
while ((j = k << 1) <= size) { R]dN-'U  
if (j < size %26amp;%26amp; queue[j] j++; }XmrfegF  
if (queue[k]>queue[j]) file://不用交换 ;/ wl.'GA  
break; X<:B"rPuK  
SortUtil.swap(queue,j,k); N, `q1B  
k = j; @zu IR0Gr)  
} TcW-pY<N  
} X#;n Gq)5  
private void fixUp(int k) { 4XL$I*;4  
while (k > 1) { zL8Z8eh">  
int j = k >> 1; "LwLTPC2  
if (queue[j]>queue[k]) ' 6^+|1  
break; \"]KF8c^_  
SortUtil.swap(queue,j,k); }kJfTsFS  
k = j; n ~c<[  
} E[Xqyp!<  
} 0.pZlv  
SB1j$6]OR7  
} ;_$Q~X  
m1pge4*  
} )FLDCer  
PjwDth A1  
SortUtil: r4YiXss  
b#uNdq3  
package org.rut.util.algorithm; n*gr(S  
RIC\f_Dv  
import org.rut.util.algorithm.support.BubbleSort; 6XP>qI,AJ  
import org.rut.util.algorithm.support.HeapSort; "0*yD[2  
import org.rut.util.algorithm.support.ImprovedMergeSort; w!/\dqjv  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^$FNu~|K  
import org.rut.util.algorithm.support.InsertSort; 0H$6_YX4 A  
import org.rut.util.algorithm.support.MergeSort; tLH:'"{zx  
import org.rut.util.algorithm.support.QuickSort; m!22tpb  
import org.rut.util.algorithm.support.SelectionSort; % w\   
import org.rut.util.algorithm.support.ShellSort; ]izrr  
bEQy5AX  
/** %rFR:w`{  
* @author treeroot 3!l+) g  
* @since 2006-2-2 }na0  
* @version 1.0 X| !VjUH  
*/ V8w7U:K  
public class SortUtil { eeVDU$*e=  
public final static int INSERT = 1; /"+CH\) E  
public final static int BUBBLE = 2; 8ln{!,j;  
public final static int SELECTION = 3; UC e{V]T  
public final static int SHELL = 4; *|gY7Av*  
public final static int QUICK = 5; HbI'n,+  
public final static int IMPROVED_QUICK = 6; }4uHT.)  
public final static int MERGE = 7; v 9,<2  
public final static int IMPROVED_MERGE = 8; H^Mfj!S  
public final static int HEAP = 9; 5VS};&f  
Ie<H4G5Vh  
public static void sort(int[] data) { T\ *#9a  
sort(data, IMPROVED_QUICK); A ".v+  
} @d&JtA  
private static String[] name={ ,59G6o  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" tG7F!um(  
}; 6N49q -.Lg  
TdU'L:<4l  
private static Sort[] impl=new Sort[]{ c>|1%}"?  
new InsertSort(), cp:U@Nh(  
new BubbleSort(), 40e(p/Qka  
new SelectionSort(), { 4 n  
new ShellSort(), 4,,@o  
new QuickSort(), 8t;vZ&  
new ImprovedQuickSort(), _ez*dE%  
new MergeSort(), @Ojbu@A  
new ImprovedMergeSort(), t!8(IR  
new HeapSort() +TZVx(Z&A  
}; Af" p:;^z  
v~*Co}0OB  
public static String toString(int algorithm){ ~xa yGk  
return name[algorithm-1];  ?v z[Zi  
} a Xn:hn~O  
AqA.,;G  
public static void sort(int[] data, int algorithm) { >]L\Bw  
impl[algorithm-1].sort(data); C3K":JB  
} !V'~<&  
h]Y,gya[yk  
public static interface Sort { |C"zK  
public void sort(int[] data); |EGC1x]j=  
} -k?K|w*X  
6`h}#@ (  
public static void swap(int[] data, int i, int j) { FUP0X2P   
int temp = data; *@VS^JB  
data = data[j]; )krBj F.$  
data[j] = temp; B,q)<z6<  
} ]Sey|/@D  
} y$}o{VE{x  
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