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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。 5-w:c>  
插入排序: =P]GPEz_  
8 u:2,l  
package org.rut.util.algorithm.support; sTOFw;v%  
7$_ :sJ  
import org.rut.util.algorithm.SortUtil; TzrW   
/** kl<g;3  
* @author treeroot \h#9oPy  
* @since 2006-2-2 kqf8=y  
* @version 1.0 e1 ^l.>2d6  
*/ or.\)(m#(  
public class InsertSort implements SortUtil.Sort{ f_'"KF[%  
OX3Xy7  
/* (non-Javadoc) xwOE+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q|//Z  
*/ P` ]ps?l  
public void sort(int[] data) { a}yR p  
int temp; 4J8Dh;a`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2sun=3qb  
} Q>%E`h  
} Hirr=a3  
} 3:AU:  
|j# ^@R  
} **HrWM%?8o  
Yb9cW\lr  
冒泡排序: uO"8aD`W  
3#mE( `|P  
package org.rut.util.algorithm.support; \(bj(any  
eJaUmK:  
import org.rut.util.algorithm.SortUtil; 8Fx]koP.  
k =|K|  
/** ^U{P3 %uZ  
* @author treeroot JWWInuH  
* @since 2006-2-2 A^L?_\e6  
* @version 1.0 DaDUK?  
*/ >~wu3q  
public class BubbleSort implements SortUtil.Sort{ nl9kYE [  
|D+p$^L  
/* (non-Javadoc) |0]YA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 453 }S  
*/ niAZ$w  
public void sort(int[] data) { Wl TpX`  
int temp; oX{@'B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ g-|Kyhr?=  
if(data[j] SortUtil.swap(data,j,j-1); z L8J`W  
} <(?' s9  
}  ]CIe~q  
} QH:>jmC{1h  
} {83C,C-  
4UVW#Rw{  
} $E@ouX?  
bq: [Nj  
选择排序: *?p ^6vO  
=-m(\ }  
package org.rut.util.algorithm.support; ^vG=|X|)c  
H7}g!n?  
import org.rut.util.algorithm.SortUtil; ~f .y:Sbb  
6N?#b66  
/** {dBB{.hX  
* @author treeroot '9"%@AFxZ  
* @since 2006-2-2 eX@ v7i,}  
* @version 1.0 l[Tt[n  
*/ .Nk}Z9L]k  
public class SelectionSort implements SortUtil.Sort { F:S"gRKz  
F$[)Bd/"  
/* %6N)G!P  
* (non-Javadoc) *h:D|4oJ(  
* i`R(7Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7MoR9,(  
*/ L,WkJe3  
public void sort(int[] data) { hcQSB00D^  
int temp; C/bxfp{?  
for (int i = 0; i < data.length; i++) { =pyVn_dg  
int lowIndex = i; ^]i" H|(x  
for (int j = data.length - 1; j > i; j--) { o>.AdZby  
if (data[j] < data[lowIndex]) { +;YE)~R?  
lowIndex = j; *q}FV2  
} Shs')Zs bv  
} 40R"^*  
SortUtil.swap(data,i,lowIndex); gji*Wq  
} ~m!#FTc*  
} /q T E  
/9P^{ OZ;y  
} QjI#Cs}w  
1]Gf)|  
Shell排序: Ywmyr[Uh'  
kp'b>&9r  
package org.rut.util.algorithm.support; $y8mK|3.3u  
3\,MsoAl  
import org.rut.util.algorithm.SortUtil; c!.=%QY  
cT\O v P*_  
/** bAN10U  
* @author treeroot E=}6 X9X  
* @since 2006-2-2 : 2_ 0L  
* @version 1.0 h] <GTWj  
*/ "pOqd8>]  
public class ShellSort implements SortUtil.Sort{ ?Y%}(3y  
UP}feN  
/* (non-Javadoc) BQ).`f";d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BHEs+ e0  
*/ WfRVv3Vm  
public void sort(int[] data) { iKohuZr  
for(int i=data.length/2;i>2;i/=2){ G!nl'5|y  
for(int j=0;j insertSort(data,j,i); f+{c1fb>s  
} KrJ5"1=  
} v hRu `Yb  
insertSort(data,0,1); 43+EX.c  
} ^cB49s+{e  
Tw2Xe S  
/** JtSuD>H`"  
* @param data 65'`uuPx  
* @param j DxE(9j  
* @param i &,^mM' C  
*/ E7V38Z  
private void insertSort(int[] data, int start, int inc) { 0PYvey }[  
int temp; .UNF~}^H  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); " ]aQ Hh]f  
} )C'G2RV  
} UAnB=L,.\  
} F~tm`n8Z  
n;e."^5  
} ) ~ l\  
{CW1t5$*  
快速排序: }9{dR4hD  
J@oEV=L  
package org.rut.util.algorithm.support; 29&sydu  
D."cQ<sxpN  
import org.rut.util.algorithm.SortUtil; s]$HkSH  
Y'tqm&}  
/** $Sp*)A]E`  
* @author treeroot sjkWz2]S  
* @since 2006-2-2 jjJc1p0  
* @version 1.0 p>2||  
*/ Dm7Y#)%8  
public class QuickSort implements SortUtil.Sort{ 5W*7qD[m  
A ~qW.  
/* (non-Javadoc) lt@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *LY~l  
*/ vF5wA-3&t  
public void sort(int[] data) {  f$:7A0  
quickSort(data,0,data.length-1); G3Idxs  
} j lYD~)  
private void quickSort(int[] data,int i,int j){ KC@k9e  
int pivotIndex=(i+j)/2; '"!z$i~G=  
file://swap AZh@t?)  
SortUtil.swap(data,pivotIndex,j); BNAguAxWo  
9oZ } h&  
int k=partition(data,i-1,j,data[j]); $sA,$x:^xI  
SortUtil.swap(data,k,j); xi '72  
if((k-i)>1) quickSort(data,i,k-1); v7s ]  
if((j-k)>1) quickSort(data,k+1,j); g*:ae;GP  
`_NnQ%  
} 4e=/f,o1  
/** LydbP17K}  
* @param data 8>C; >v  
* @param i FRl3\ZDqrb  
* @param j t_[M &  
* @return *u|lmALs  
*/ DhtU]w}  
private int partition(int[] data, int l, int r,int pivot) { W0+gfg  
do{ Y9IJ   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yt/20a  
SortUtil.swap(data,l,r); ;n(#b8r9  
} !Z<mrr;T@  
while(l SortUtil.swap(data,l,r); &+)+5z_d  
return l; no~OR Q  
} WUE)SVf  
Ns+)Y^(5  
} oj,HJH+  
uR06&SaA>  
改进后的快速排序: P#dG]NMf  
1kB'sc3N!  
package org.rut.util.algorithm.support; "_ PH"W  
hj^G} 4  
import org.rut.util.algorithm.SortUtil; JfZL?D{NM  
`^X RrVX<  
/** 2.fyP"P L  
* @author treeroot dXA{+<!!  
* @since 2006-2-2 2 pM  
* @version 1.0 "4Vi=*2V  
*/ ZYwBw:y}y  
public class ImprovedQuickSort implements SortUtil.Sort { <;$Sa's,LE  
ue6/EN;}  
private static int MAX_STACK_SIZE=4096; jQ.>2-;H9  
private static int THRESHOLD=10; Xm"w,J&  
/* (non-Javadoc) Vze!/ED  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ct =E;v7}  
*/ rQd1Ch  
public void sort(int[] data) { ({d,oU$>y  
int[] stack=new int[MAX_STACK_SIZE]; Gx(KN57D  
GsP@ B'  
int top=-1; .XV]<)<K$  
int pivot; ZXssvjWQV}  
int pivotIndex,l,r; -)y> c  
r)9i1rI+  
stack[++top]=0; .-C+0L1j  
stack[++top]=data.length-1; mFgb_Cd  
|!4B Wt  
while(top>0){ 3<KZ.hr  
int j=stack[top--]; YO.`l~ v  
int i=stack[top--]; I&'S2=s  
%T&&x2p^=?  
pivotIndex=(i+j)/2; +H)!uLva B  
pivot=data[pivotIndex]; J[& 7,}  
jt'Y(u]2  
SortUtil.swap(data,pivotIndex,j); uNPD~TYN  
;*>QG6Fh  
file://partition d!}jdt5%  
l=i-1; l(k rUv  
r=j; y]E)2:B[d  
do{ wa(Wit"-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  |(J ?#?  
SortUtil.swap(data,l,r); t(z(-G|&  
} :N*q;j>  
while(l SortUtil.swap(data,l,r); 6S! lD=  
SortUtil.swap(data,l,j); PoBu kOv  
EvH(Po h  
if((l-i)>THRESHOLD){ >"sKfiM)b  
stack[++top]=i; lk+=2 6>  
stack[++top]=l-1; xdbu|fC  
} T|BY00Sz`  
if((j-l)>THRESHOLD){ ZaNyNxbp>z  
stack[++top]=l+1; _Sk< S  
stack[++top]=j; "b1R5(Ar  
} RBv=  
-pU\"$nuxH  
} `3>)BV<P  
file://new InsertSort().sort(data); "u,~yxYWl  
insertSort(data); 6&OonYsP  
} Be14$7r  
/** H~_^w.P  
* @param data 0o"<^] _|  
*/ R^u^y{ohr  
private void insertSort(int[] data) { 93Ci$#<y  
int temp; o{-USUGj7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :hl}Z n~jt  
} kGBl)0pr`x  
} =DF@kR[CH"  
} @=<TA0;LL  
]uj.uWD  
} C(%5,|6  
K_lCDiqG  
归并排序: d,Dg"Z  
vS*0CR\  
package org.rut.util.algorithm.support; bcx{_&1p  
q2j}64o _S  
import org.rut.util.algorithm.SortUtil; C"m0"O>  
k`4\.m"&  
/** }Bod#|`  
* @author treeroot -Bwu$$0  
* @since 2006-2-2 KJvJUq  
* @version 1.0 GE3U0w6WbK  
*/ O,xAu}6f+  
public class MergeSort implements SortUtil.Sort{ TeN1\rA,  
3_1Io+uXk  
/* (non-Javadoc) hDkqEkq1R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '`goy%Wd  
*/ H R!>g  
public void sort(int[] data) { ,IVr4#w0=  
int[] temp=new int[data.length]; %Ty {1'o  
mergeSort(data,temp,0,data.length-1); PK`(qK9  
} k s`  
pvwnza1  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5tCq}]q#P  
int mid=(l+r)/2; {ZIFj.2  
if(l==r) return ; Nxs%~ wZ   
mergeSort(data,temp,l,mid); hr}R,BR|  
mergeSort(data,temp,mid+1,r); \3Ald.EqtM  
for(int i=l;i<=r;i++){ Sdu@!<?B  
temp=data; ?28GQyk4  
} +fQ$~vr{'  
int i1=l; R^O)fL0_  
int i2=mid+1; !VZCM{  
for(int cur=l;cur<=r;cur++){ H2_>Av{m  
if(i1==mid+1) xg5@;p  
data[cur]=temp[i2++]; ]A<u eM  
else if(i2>r) {8p?we3l1  
data[cur]=temp[i1++]; ghO//?m  
else if(temp[i1] data[cur]=temp[i1++]; om39;nk!}  
else =/'*(\C2  
data[cur]=temp[i2++]; waq_d.  
} wm`"yNbD  
} *M!YQ<7G^d  
\C\y' H5  
} 9l^  
j<-o{6r  
改进后的归并排序: ~S{\wL53  
9oN'.H^  
package org.rut.util.algorithm.support; o|n0?bThS-  
LUVJ218p  
import org.rut.util.algorithm.SortUtil; @:&dOqQ  
YZtA:>;p  
/** .0;k|&eBD  
* @author treeroot 1ZW'PXUZ  
* @since 2006-2-2 _^s SI<&m  
* @version 1.0 lfhKZX  
*/ E1Aa2  
public class ImprovedMergeSort implements SortUtil.Sort { qvE[_1QCc  
eOO*gM=  
private static final int THRESHOLD = 10; =` >Nfa+,  
:H:}t>X6Vo  
/* O.f3 (e!  
* (non-Javadoc) Ps5wQaS  
* ) G&3V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Ki7N{K t  
*/ t7%Bv+Uo  
public void sort(int[] data) { d#,V^  
int[] temp=new int[data.length]; u"$HWB~@z  
mergeSort(data,temp,0,data.length-1); eb woMG,B-  
} (:k`wh&  
v" TH[}C9D  
private void mergeSort(int[] data, int[] temp, int l, int r) { =umS^fJ5`  
int i, j, k; I}3K,w/7mi  
int mid = (l + r) / 2; ?Og ;W9i  
if (l == r) 9e*poG  
return; l),13"?C(  
if ((mid - l) >= THRESHOLD) {%}6 d~Bg  
mergeSort(data, temp, l, mid); Q*o4zW  
else 8j +;Xlh  
insertSort(data, l, mid - l + 1); E1[%~Cpw*  
if ((r - mid) > THRESHOLD) UZ0O j5B.  
mergeSort(data, temp, mid + 1, r); !t{!.  
else g{{SY5qDj  
insertSort(data, mid + 1, r - mid); 45JLx?rN_  
e+aQ$1^t  
for (i = l; i <= mid; i++) { AU\!5+RDB  
temp = data; S8<aq P  
} 1#RA+d(  
for (j = 1; j <= r - mid; j++) { [$+61n}.12  
temp[r - j + 1] = data[j + mid]; .v8=zi:7Y  
} 8)ol6Mi{  
int a = temp[l]; P3>2=qK"E(  
int b = temp[r]; Z)~4)71Y:  
for (i = l, j = r, k = l; k <= r; k++) { CtxK{:  
if (a < b) { KwyXM9h6=  
data[k] = temp[i++]; (P_+m#  
a = temp; w-/Tb~#E  
} else { N.rB-  
data[k] = temp[j--]; G _o4A:2  
b = temp[j]; C*<LVW{P  
} pYQs|5d  
} <VPtbM@(m  
} EaL+}/q&  
7%WI   
/** Jl}7]cVq#  
* @param data )E|Bb=%  
* @param l g9.hR8X  
* @param i .!! yj,bQz  
*/ s=+G%B'  
private void insertSort(int[] data, int start, int len) { Y6Q6--P  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); X} 8U-N6)  
} ]|(?i ,p  
} U[u6UG  
} {^iV<>J  
} W3kilhZ  
?,[w6O*  
堆排序: &kt#p;/p?  
r e2%e-F"  
package org.rut.util.algorithm.support; Pd?YS!+S  
7Q&P4{hi0  
import org.rut.util.algorithm.SortUtil; (C|%@61S  
I-I5^s  
/** >@o*v*25  
* @author treeroot #B[>\D"*  
* @since 2006-2-2 fC[gu$f][  
* @version 1.0 *G38N]|u6  
*/ x(Z@ R\C-a  
public class HeapSort implements SortUtil.Sort{ 3m'6cMQ  
OduTg^R  
/* (non-Javadoc) J/ ~]A1fP6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y,r2m nq  
*/ wO9<An  
public void sort(int[] data) { >Ww F0W9?  
MaxHeap h=new MaxHeap(); ;DOz92X94  
h.init(data); 70Am]L&M  
for(int i=0;i h.remove(); uB?YJf .T@  
System.arraycopy(h.queue,1,data,0,data.length); 6>Fw,$  
} m[XN,IE#u  
))vwofkw4  
private static class MaxHeap{ >=(e}~5y  
0J" 3RTt  
void init(int[] data){ <f%9w]  
this.queue=new int[data.length+1]; r_",E=e  
for(int i=0;i queue[++size]=data; JqO( ]*"Hi  
fixUp(size); Q] HRg4r  
} @QEV l  
} POf \l  
??Lxb% 7R  
private int size=0; Z'~5L_.]Ai  
uE2Y n`Ha  
private int[] queue; y\:2Re/*Jt  
a ]*^uEs  
public int get() { #r C% \  
return queue[1]; BsAglem  
} [O3R(`<e5  
/>?d 2?  
public void remove() { X$aMf &x  
SortUtil.swap(queue,1,size--); ;Mc}If*  
fixDown(1); Mm5l>D'c  
} c:bB4ch}  
file://fixdown Mo/xEB/O  
private void fixDown(int k) { %+.]>''a  
int j; cb+!H>+  
while ((j = k << 1) <= size) { sTb/l!=o  
if (j < size %26amp;%26amp; queue[j] j++; _^B+Xo@E-  
if (queue[k]>queue[j]) file://不用交换 5]{YERa'  
break; 3+Q6<MS q  
SortUtil.swap(queue,j,k); E-/]UH3u H  
k = j; o8" [6Ys  
} wNPZ[V:  
} E,;nx^`!l  
private void fixUp(int k) { 9'tM65K  
while (k > 1) { o)$sZ{` ="  
int j = k >> 1;  i J\#su  
if (queue[j]>queue[k]) FvkKM+?F  
break; @U&|38  
SortUtil.swap(queue,j,k); `s+qz  
k = j; qAU]}Et/  
} +5Mx0s(5  
} U;^{uQJ+,  
@/9> /?JP  
} 33; yt d  
P -Pt{:  
} L3/ua  
wiutUb Y  
SortUtil: @a~K#Bvlm  
(YR1ML3N  
package org.rut.util.algorithm;  E$G8-  
kqy Y:J  
import org.rut.util.algorithm.support.BubbleSort; 5%Q!R%  
import org.rut.util.algorithm.support.HeapSort; {30A1>0#P  
import org.rut.util.algorithm.support.ImprovedMergeSort; h7*m+/O  
import org.rut.util.algorithm.support.ImprovedQuickSort; q[+];  
import org.rut.util.algorithm.support.InsertSort; # OJD<=")  
import org.rut.util.algorithm.support.MergeSort; !rXyw`6N  
import org.rut.util.algorithm.support.QuickSort; 8T%z{A1T  
import org.rut.util.algorithm.support.SelectionSort; m1(rAr1  
import org.rut.util.algorithm.support.ShellSort; D3_,2  
4g6d6~098;  
/** # wG}T .*  
* @author treeroot 6l50IWj,T  
* @since 2006-2-2 NZ Xmrc{S  
* @version 1.0 ;}r#08I  
*/ C9~CP8  
public class SortUtil { < B'BlqTS  
public final static int INSERT = 1; HK}C<gg  
public final static int BUBBLE = 2; !#>{..}}3  
public final static int SELECTION = 3; 1X=}  
public final static int SHELL = 4; S3 &L  
public final static int QUICK = 5; %=GnGgu  
public final static int IMPROVED_QUICK = 6; d/"e3S1  
public final static int MERGE = 7; GU_R6Wt+  
public final static int IMPROVED_MERGE = 8; VPf=LSxJe  
public final static int HEAP = 9; $oh}!Smt  
t,&1~_9  
public static void sort(int[] data) { '(ql7  
sort(data, IMPROVED_QUICK); ? -6oh~W<  
} f 1]1ZOb  
private static String[] name={ gi~*1RIel;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8E|S`I  
}; UE*M\r<  
@dw0oRF  
private static Sort[] impl=new Sort[]{ Z:5e:M  
new InsertSort(), b]@^SN9  
new BubbleSort(), )/Ul" QF  
new SelectionSort(), q&7J1  
new ShellSort(), IRD?.K]*  
new QuickSort(), 4R.rSsAH  
new ImprovedQuickSort(), B!6?+< J"  
new MergeSort(), IE,xiV  
new ImprovedMergeSort(), iE>T5XV8$B  
new HeapSort() LLCMp3qBz  
}; iku) otUc  
r6JdF!\d  
public static String toString(int algorithm){ p"3_u;cN  
return name[algorithm-1]; ?bW|~<X~  
} dy`K5lC@  
 {|a=  
public static void sort(int[] data, int algorithm) { HOBM?|37CU  
impl[algorithm-1].sort(data); (@[c;+x  
} 9F@Q  
@LqLtr@A  
public static interface Sort { xmsw'\  
public void sort(int[] data); *+rO3% ;t  
} <S <@V?h  
C,HKao\  
public static void swap(int[] data, int i, int j) { wgp{P>oBX  
int temp = data; 9/'zk  
data = data[j]; #Fm,mO$v  
data[j] = temp; ?@!dc6   
} $GB/}$fd&  
} rzsAnLxo  
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