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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。 V~ ~=Qp+.  
插入排序: 1QZ&Mj^^  
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package org.rut.util.algorithm.support; O<)y-nx;X  
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import org.rut.util.algorithm.SortUtil; ?T_3n:  
/** &AuF]VT  
* @author treeroot b5IA"w  
* @since 2006-2-2 _ 7PMmW@  
* @version 1.0 cr?7O;,  
*/ iV FkYx%}  
public class InsertSort implements SortUtil.Sort{ 3QSZ ZJ  
DcMJ^=r8O:  
/* (non-Javadoc) kpbm4t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $wYtyN[  
*/ `6y{.$ z  
public void sort(int[] data) { )2UZ% ?V#  
int temp; [>#*B9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MRr</o  
} ;U: {/  
} $qF0ltUQ  
} biozZ  
k+V6,V)my  
} ;TcvA  
4$/i%B#ad  
冒泡排序: 2#X4G~>#h  
 Pi%%z  
package org.rut.util.algorithm.support; x 5dWBGH  
~ `>e5OgOJ  
import org.rut.util.algorithm.SortUtil; ~Au,#7X)  
Z3 ;!l  
/** NVIK>cT6  
* @author treeroot wiOgyMdx  
* @since 2006-2-2 d|Gl`BG   
* @version 1.0 ; )Kh;;e  
*/  I~,G  
public class BubbleSort implements SortUtil.Sort{ _4 6X%k  
H7+X&#s%  
/* (non-Javadoc) 7z\m; 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ae^X35  
*/ @ P@c.*}s  
public void sort(int[] data) { c[}(O H  
int temp; p3ISWJa!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I"AYWo?  
if(data[j] SortUtil.swap(data,j,j-1); 5ep/h5*/  
} n[Zz]IO,g  
} ^^i6|l1  
} *O:r7_ Y0  
} Z') pf  
9 7%0;a8  
} zeP}tzQO  
}}QTHR  
选择排序: -Z4{;I[Q@  
 6,1b=2G  
package org.rut.util.algorithm.support; {^{p,9  
k>}g\a,  
import org.rut.util.algorithm.SortUtil;  gB\T[RV  
K\[!SXg@  
/** 0U66y6  
* @author treeroot DfJ2PX}q  
* @since 2006-2-2 3qHQX?a  
* @version 1.0 eRbGZYrJ  
*/ 0Q1FL MLV  
public class SelectionSort implements SortUtil.Sort { _2fkb=2@  
?3z-_8#  
/* |VOg\[f  
* (non-Javadoc) l=`L7| ^/d  
* &a!BD/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /)N@M  
*/ 0YH+B   
public void sort(int[] data) { 2Zuq?1=  
int temp; j^`X~gE  
for (int i = 0; i < data.length; i++) { !DjvsG1x  
int lowIndex = i; 6 y"-I !&  
for (int j = data.length - 1; j > i; j--) { r#WT`pav  
if (data[j] < data[lowIndex]) { Q8p&Ki;i  
lowIndex = j; Z>F^C}8f  
} v8>v.}y  
} fQWIw  
SortUtil.swap(data,i,lowIndex); +i `*lBup$  
} 8$xPex~2  
} 50j OA#l[  
W [[oSqp  
} W#_/ak$uF*  
hf!|\f  
Shell排序: k'`m97B  
tc_f;S`k  
package org.rut.util.algorithm.support; 5yh/0i5|  
N\t1T(C|  
import org.rut.util.algorithm.SortUtil; KHKS$D  
t^=U*~  
/** 7>o .0  
* @author treeroot 78n}rT%k1  
* @since 2006-2-2 u#W5`sl  
* @version 1.0 -9P2`XQ^  
*/ 6XEZ4QP}  
public class ShellSort implements SortUtil.Sort{ WV;=@v  
O(2cWQ  
/* (non-Javadoc) TGT$ >/w >  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lw8"'0  
*/ {hSGv   
public void sort(int[] data) { '6Qy/R  
for(int i=data.length/2;i>2;i/=2){ RR1A65B  
for(int j=0;j insertSort(data,j,i); Hyk'c't_O  
} ~+D*:7Y_  
} bTmL5}n  
insertSort(data,0,1); @b&84Gn2 r  
} !}TMiCK  
~ <0Z>qr  
/** oR+-+-? ?$  
* @param data {B$2"q/~  
* @param j $KV&\Q3\0  
* @param i n[xkSF^)  
*/ xIbMs4'iEx  
private void insertSort(int[] data, int start, int inc) { ClW'W#*(Y  
int temp; 6@;ha=[+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); F SMj  
} ZU'!iU|8  
} UyYfpL"$A"  
} YZ#V#[j'^  
"vF MSY  
} r2*<\ax  
4Wel[]  
快速排序: dLh6:Gh8_I  
`qpc*enf0  
package org.rut.util.algorithm.support; ";3*?/uM  
UgHf*m  
import org.rut.util.algorithm.SortUtil; 4|J[Jdj  
hP?fMW$V  
/** rp! LP#*  
* @author treeroot s}x>J8hK  
* @since 2006-2-2  |qcD;  
* @version 1.0 qV1O-^&[f=  
*/ Rz <OF^Iy  
public class QuickSort implements SortUtil.Sort{ V}8$p8#<@  
>G)qns9  
/* (non-Javadoc) d{+(Lpj^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =fLL|  
*/ wJ"ev.A)  
public void sort(int[] data) { kN9yO5 h7  
quickSort(data,0,data.length-1); J}g~uW  
} :{g7lTM  
private void quickSort(int[] data,int i,int j){ =WZ%H_oxi  
int pivotIndex=(i+j)/2; I@7/jUO  
file://swap <zB*'m  
SortUtil.swap(data,pivotIndex,j); Y)HbxFF`/  
Rc$h{0K8  
int k=partition(data,i-1,j,data[j]); _."E%|5  
SortUtil.swap(data,k,j); 8:;#,Urr  
if((k-i)>1) quickSort(data,i,k-1); t\y-T$\\  
if((j-k)>1) quickSort(data,k+1,j); V 2znU  
+H'\3^C-  
} /lD?VE  
/** W|c.l{A5Q  
* @param data =G>(~+EA  
* @param i d+2daKi  
* @param j x !{   
* @return )^;DGzG  
*/ >q( 5ir  
private int partition(int[] data, int l, int r,int pivot) { x'`"iZO.t  
do{ r2eQ{u{nX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a8uYs DS  
SortUtil.swap(data,l,r); Bku' H  
} u}jrfKd E  
while(l SortUtil.swap(data,l,r); +$pJ5+v  
return l; 8OAg~mQ15(  
} ia{kab|_5  
:$H!@n*/R  
} 'Ji+c  
YdOUv|tZC  
改进后的快速排序: W"sr$K2m|  
R{3CW^1  
package org.rut.util.algorithm.support; W cGXp$M  
n6f3H\/P&  
import org.rut.util.algorithm.SortUtil;  4#rAm"H  
!Yh}H<w0  
/** (([I]q  
* @author treeroot * BOBH;s  
* @since 2006-2-2 h5onRa *7  
* @version 1.0 Q=+8/b  
*/ {'~sS  
public class ImprovedQuickSort implements SortUtil.Sort { 7:o+iP46  
< 5ZJ]W  
private static int MAX_STACK_SIZE=4096; -9G]x{>  
private static int THRESHOLD=10; 9*_uCPR  
/* (non-Javadoc) epVH.u%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `"Dy%&U  
*/ |=3 *;}  
public void sort(int[] data) { ?)cJZ>$!w  
int[] stack=new int[MAX_STACK_SIZE]; .cR*P<3O  
XiG88Kwv  
int top=-1; Kym:J \}9B  
int pivot; ;BTJ%F.  
int pivotIndex,l,r; 1g i}H)  
,OB&nN t>  
stack[++top]=0; G%OpO.Wf  
stack[++top]=data.length-1; /=M.-MU2  
4A~)b"j5  
while(top>0){ \Da~p9 T&  
int j=stack[top--]; `u=<c  
int i=stack[top--]; %HEmi;  
? ).(fP  
pivotIndex=(i+j)/2; nHU3%%%cU  
pivot=data[pivotIndex]; z(UX't (q  
Q-Y@)Mf~?0  
SortUtil.swap(data,pivotIndex,j); ,4Y sZ  
ayH>XwY6  
file://partition 4~WlP,,M  
l=i-1; zjWyGt(Q  
r=j; we a\8[U3"  
do{ 6QptKXu7  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !:J< pWN"  
SortUtil.swap(data,l,r); g.&\6^)8p  
} m t.,4  
while(l SortUtil.swap(data,l,r); N[{]iQ  
SortUtil.swap(data,l,j); ~[;{   
*l q7t2  
if((l-i)>THRESHOLD){ _6I>+9#C  
stack[++top]=i; "0Y&~q[=  
stack[++top]=l-1; *<3iEeO/R  
} g{&PrE'e9  
if((j-l)>THRESHOLD){ *EE|?vn  
stack[++top]=l+1; A'v[SUW'm  
stack[++top]=j; 5oa]dco  
} Z{16S=0  
%>]#vQ|  
} GD/nR4$  
file://new InsertSort().sort(data); :O#gJob-%s  
insertSort(data); nTQ (JDf  
} {8i}Ow  
/** oG9SO^v_  
* @param data ?/L1tX)  
*/ zN/Gy}  
private void insertSort(int[] data) { 0Cv4/Ar(  
int temp; /^WE@r[:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *Ag,kW"  
} 9 &[\*{  
} @@xF#3   
} $q=hcu  
@) ]t8(  
} *xho  
$o: :PDQ?  
归并排序: s={X-H< 2  
.y(@Y6hO  
package org.rut.util.algorithm.support; ;W =by2x*  
@~Rk^/0  
import org.rut.util.algorithm.SortUtil; {S# 5g2  
0$(jBnE  
/** *+# k{D,  
* @author treeroot Xek E#?.  
* @since 2006-2-2 DwQp$l'NfW  
* @version 1.0 <`b|L9  
*/ 9yp^zL  
public class MergeSort implements SortUtil.Sort{ $Jt8d|UP  
]lC4+{V  
/* (non-Javadoc) J\9jsx!WQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F\l!A'Q+t  
*/ 1gO//fdI  
public void sort(int[] data) { W'8J<VBD  
int[] temp=new int[data.length]; f2 VpeJ<p  
mergeSort(data,temp,0,data.length-1); y0lLFe~  
} 1Z=;Uy\  
| H5Ync[s  
private void mergeSort(int[] data,int[] temp,int l,int r){ (u$!\fE-et  
int mid=(l+r)/2; *YMXiYJR  
if(l==r) return ; P'KY.TjWb  
mergeSort(data,temp,l,mid); ~p0 e=u  
mergeSort(data,temp,mid+1,r); t/_\U =i$  
for(int i=l;i<=r;i++){ UX+?0K  
temp=data; %YsRm%q  
} `\6 +z  
int i1=l; WIhIEU7/  
int i2=mid+1; !;6W!%t.|  
for(int cur=l;cur<=r;cur++){ D]3bwoFo&u  
if(i1==mid+1) h:eN>yW  
data[cur]=temp[i2++]; 9iiU,}M`j  
else if(i2>r) q oKQEG2  
data[cur]=temp[i1++]; 3ytx"=B%  
else if(temp[i1] data[cur]=temp[i1++]; 99=[>Ck)G  
else K7YT0cG  
data[cur]=temp[i2++]; Vu^Q4Z  
} U!3uaz'  
} lU >)n  
.oW~:mY  
} S8rW'}XJ=H  
zSX'  
改进后的归并排序: Jc9@VxWY  
^*j[&:d  
package org.rut.util.algorithm.support; _CYmG"mY  
Ej9/_0lt  
import org.rut.util.algorithm.SortUtil; ([z<TS#Md  
Lcm~QF7cd  
/** E0WrpGZ  
* @author treeroot C"V?yDy2~  
* @since 2006-2-2 Phk`=:xh  
* @version 1.0 .je~qo )  
*/ hv_pb#1Ks  
public class ImprovedMergeSort implements SortUtil.Sort { 0Te)s3X  
S.?\>iH[  
private static final int THRESHOLD = 10; l#< }|b  
3(XHF3q  
/* 4@ydK  
* (non-Javadoc) o)$Q]N##  
* MC[ `<W)u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I{Y {  
*/ s0`]!7D<  
public void sort(int[] data) { _AsHw  
int[] temp=new int[data.length]; '=@H2T6=  
mergeSort(data,temp,0,data.length-1); h|Teh-@A5  
} EusfgU:  
E: LQ!  
private void mergeSort(int[] data, int[] temp, int l, int r) { %s&E-*X  
int i, j, k; JXD?a.vy^q  
int mid = (l + r) / 2; \I`=JKYT  
if (l == r) 3HDnOl8t  
return; qJAv=D  
if ((mid - l) >= THRESHOLD) C$]%1<-Iv]  
mergeSort(data, temp, l, mid); K[3D{=  
else b*F :l#  
insertSort(data, l, mid - l + 1); H8Z Z@@ qm  
if ((r - mid) > THRESHOLD) _sCJ3ZJ  
mergeSort(data, temp, mid + 1, r); e P,XH{s  
else #xJGuYdv  
insertSort(data, mid + 1, r - mid); cxF?&0[mY  
/d]V{I~6  
for (i = l; i <= mid; i++) { V+@%(x@D_  
temp = data; WEY97_@  
} Q,`2DHhK  
for (j = 1; j <= r - mid; j++) { olQ8s *  
temp[r - j + 1] = data[j + mid]; `!>dbR&1  
} S<bz7 k9  
int a = temp[l]; j@_) F^12  
int b = temp[r]; ^|hRu{Q W  
for (i = l, j = r, k = l; k <= r; k++) { zi DlJ3]^  
if (a < b) { o\:f9JL  
data[k] = temp[i++]; Y|qixpP  
a = temp; b&V]|Z (  
} else { Kr}M>hF+|  
data[k] = temp[j--]; +8@`lDnr  
b = temp[j]; 7AFS)_w  
} %?9r(&  
} |?t8M9[Z  
} K {1ZaEH  
& 4Iqm(  
/**  lN`_0  
* @param data +68K[s,FD  
* @param l Cx3m\ \c  
* @param i -aeo7C  
*/ _)Z7Le:f!  
private void insertSort(int[] data, int start, int len) { :"+UG-S$6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r)@&2b"q  
} !O-_Dp\#  
} 6+f>XL#w  
} D` `NQ`>A  
} SAxa7B/U2  
8KELN(o$ 7  
堆排序: 2;(iTPz +  
uW-- nXMs  
package org.rut.util.algorithm.support; 'LLQ[JJ=O  
cZX&itVc:  
import org.rut.util.algorithm.SortUtil; xS\QKnG.  
sq (063l  
/** 0gb]Kjx  
* @author treeroot n#L2cv~Aj"  
* @since 2006-2-2 S%gO6&^  
* @version 1.0 V1b_z  
*/ gl\$jDC9  
public class HeapSort implements SortUtil.Sort{ G mUs U{  
f;XsShxr  
/* (non-Javadoc) Y l3[~S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4bJ2<j  
*/ 7 te!>gUW  
public void sort(int[] data) { _(kwD^x6O{  
MaxHeap h=new MaxHeap(); {Ljl4Sp&  
h.init(data); 6l]?%0[*  
for(int i=0;i h.remove(); 8\V>6^3CD$  
System.arraycopy(h.queue,1,data,0,data.length); +FKP5L}  
} 64?$TT  
Ac(irPrD  
private static class MaxHeap{ 1eyyu!  
<UHWy&+z&  
void init(int[] data){ -/7=\kao%  
this.queue=new int[data.length+1]; ]4Yb$e`  
for(int i=0;i queue[++size]=data; l \n:"*To  
fixUp(size); JOne&{h]J"  
} .O-DVW Cm  
} /ZN5WK  
j#>![km Mu  
private int size=0; F*( A; N_y  
)"3oe ?  
private int[] queue; =ZIFS  
dv}R]f'  
public int get() { 1Kf t?g  
return queue[1]; T:~W.3  
} 7MJ)p$&  
mb`}sTU).  
public void remove() { VP[!ji9P   
SortUtil.swap(queue,1,size--); WK)k-A^q  
fixDown(1); Nl)jQ  
} x[@3;_'K  
file://fixdown @O0 vh$3t0  
private void fixDown(int k) { !4.^@^L|\  
int j; uqeWdj*Y  
while ((j = k << 1) <= size) { 5)NfZN# &  
if (j < size %26amp;%26amp; queue[j] j++; 1% %Tm"  
if (queue[k]>queue[j]) file://不用交换 r_Yl/WW  
break; Z4 zMa&  
SortUtil.swap(queue,j,k); >b](v)  
k = j; X.Y)'qSf  
} +~.Jw#HqS  
} J` --O(8Ml  
private void fixUp(int k) { I2!HXMrp  
while (k > 1) { 0]0M>vx u  
int j = k >> 1; N^`Efpvg  
if (queue[j]>queue[k]) /j\TmcnU^  
break; qc"/T16M]  
SortUtil.swap(queue,j,k); KCT"a :\  
k = j; SFNd,(kB*z  
} PH &ms  
} 19`0)pzZ*P  
buyz>IC P  
} J0bs$  
*n ?:)(  
} <$6E r  
E?o8'r  
SortUtil: Fpwh.R:yV  
. L%@/(r  
package org.rut.util.algorithm; \1_&?( pU  
A8Y~^wn  
import org.rut.util.algorithm.support.BubbleSort; D];([:+4  
import org.rut.util.algorithm.support.HeapSort; 6RodnQ  
import org.rut.util.algorithm.support.ImprovedMergeSort; L KR,CPz  
import org.rut.util.algorithm.support.ImprovedQuickSort; FEswNB(]*  
import org.rut.util.algorithm.support.InsertSort; nE%qm -  
import org.rut.util.algorithm.support.MergeSort; Vo8"/]_h  
import org.rut.util.algorithm.support.QuickSort; _I5+o\;1  
import org.rut.util.algorithm.support.SelectionSort; HjR<4;2  
import org.rut.util.algorithm.support.ShellSort; "evV/Fg (  
%,RU)}  
/** l6Bd<tSH  
* @author treeroot D$ z!wV  
* @since 2006-2-2 8}@a?QS(&  
* @version 1.0 D8XXm lo  
*/ >(a_9l;q  
public class SortUtil { G dY^}TJrh  
public final static int INSERT = 1; #+nv,?@  
public final static int BUBBLE = 2; {u3u%^E;R  
public final static int SELECTION = 3; 4`]1W,t  
public final static int SHELL = 4; m q9&To!  
public final static int QUICK = 5; .?:~s8kB  
public final static int IMPROVED_QUICK = 6; xc3Q7u!|  
public final static int MERGE = 7; .JjuY'-Q  
public final static int IMPROVED_MERGE = 8; ghiElsBU  
public final static int HEAP = 9; s yvi/6  
8 EH3zm4  
public static void sort(int[] data) { a@1gMZc*  
sort(data, IMPROVED_QUICK); 9Ua@-  
} FgaBwd^W  
private static String[] name={ r6G)R+#  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "rJL ^ \r  
}; h 42?^mV4?  
c?S402M}  
private static Sort[] impl=new Sort[]{ Xw5" JE!.  
new InsertSort(), ,_O[; L  
new BubbleSort(), MLX.MUS  
new SelectionSort(),  f;a6ux#  
new ShellSort(), VTa8.(i6v  
new QuickSort(), `BY`ltW  
new ImprovedQuickSort(), &Y$rVBgQ  
new MergeSort(), Q5JeL6t  
new ImprovedMergeSort(), K2Zy6lGOZ  
new HeapSort() |{Q,,<C  
}; ^;bkU|(`6  
24fWj?A|^  
public static String toString(int algorithm){ +a;j>hh  
return name[algorithm-1]; 9 |Y?#oZ1  
} >sq9c/}X  
K.~U%v}  
public static void sort(int[] data, int algorithm) { &h-1Z}  
impl[algorithm-1].sort(data); 3WS % H17  
} 50A_+f.7%  
B%/Pn 2  
public static interface Sort { I%`2RXBt3^  
public void sort(int[] data); &D#v0!e~x  
} 1;V5b+b  
107SXYdhI  
public static void swap(int[] data, int i, int j) { wDk[)9#A   
int temp = data; RZjR d  
data = data[j]; q[lqEc  
data[j] = temp; K(^x)w r-:  
} +FR"Gt$g  
} xAflcY>Ozs  
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