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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。 OsuSx^}  
插入排序: pmXWI`s  
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package org.rut.util.algorithm.support;  K`mxb}  
!"qEB2r  
import org.rut.util.algorithm.SortUtil; gM/_:+bT>P  
/** BqJrL/(  
* @author treeroot zqEZ+|c=  
* @since 2006-2-2 jI pcMN<  
* @version 1.0 6(;[ov1  
*/ p<.!::*%(  
public class InsertSort implements SortUtil.Sort{ OaVL NA^{  
<@2?2l+`X  
/* (non-Javadoc) /?<9,7#i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sf8Xj |u  
*/ iO#xIl<  
public void sort(int[] data) { a\.?{/  
int temp; z:q'?{` I  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); t jBv{  
} e}@J?tJK.L  
} < 2r#vmM  
} <L[)P{jn?p  
H  "/e%  
} w@D@,q'x  
>}`1'su  
冒泡排序: iDe0 5f1R  
-cS4B//IK8  
package org.rut.util.algorithm.support; 2yg'?tpj  
A=>6$L];'  
import org.rut.util.algorithm.SortUtil; Y+PxV*"a  
?q8g<-?  
/** R(#;yn  
* @author treeroot KuAGy*:4T  
* @since 2006-2-2 /]UNN~(  
* @version 1.0 kUBHK"}K  
*/ m=b+V#4i(  
public class BubbleSort implements SortUtil.Sort{ 8IcQpn#  
e5y`CXX  
/* (non-Javadoc) 1;sAt;/W8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _ 25]>D$  
*/ 6#-; ,2i  
public void sort(int[] data) { S`PSFetC  
int temp; Nr7.BDA  
for(int i=0;i for(int j=data.length-1;j>i;j--){ l`G:@}P>G  
if(data[j] SortUtil.swap(data,j,j-1); o ieLh"$  
} ^hTJp{  
} YXOD fd%L  
} B#lj8I^|  
} DD3yl\#,  
)%W2XvG  
} 8U$UI  
jWjK-q@Y  
选择排序: }|,\ ?7,  
\YyU5f7';  
package org.rut.util.algorithm.support; %=>xzP(z  
U-:Z ^+Y  
import org.rut.util.algorithm.SortUtil; YS6az0ie  
MA QY/s~F  
/** 2]KPW*V  
* @author treeroot :D7!6}%  
* @since 2006-2-2 DO*C]   
* @version 1.0 0([jD25J!  
*/ 9Ei#t FMc  
public class SelectionSort implements SortUtil.Sort { nmAXU!t'  
^OsUWhkV  
/* T7X2$ '  
* (non-Javadoc) u01^ABn  
* jYx(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7q=xW6  
*/ |#,W3Ik(l  
public void sort(int[] data) { )W#g@V)>  
int temp; 1e%Xyqb  
for (int i = 0; i < data.length; i++) { Vi~+C@96  
int lowIndex = i; D*b|(Oi  
for (int j = data.length - 1; j > i; j--) { '\qr=0aW  
if (data[j] < data[lowIndex]) { FX%E7H  
lowIndex = j; dXN&<Q,  
} ?XrTZ{5'  
} {x$#5 PW  
SortUtil.swap(data,i,lowIndex); 6XqO' G  
} JH, +F  
} T 0C'$1T  
,o6:  V]a  
} K~N[^pF  
H*<dte<  
Shell排序: U}TQXYAg  
wYM{x!D  
package org.rut.util.algorithm.support; J~6*d,Ry`  
:36^^Wm  
import org.rut.util.algorithm.SortUtil; <o`]wOrl  
N_}Im>;!  
/** ;f*xOdi*k  
* @author treeroot ~|]\. ^B  
* @since 2006-2-2 w N.Jyb  
* @version 1.0 Ee| y[y,  
*/ $^GnY7$!>  
public class ShellSort implements SortUtil.Sort{ 8`<GplO  
:RG6gvz  
/* (non-Javadoc) $9$NX/P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gW%(_H mX  
*/ a2n#T,kq&  
public void sort(int[] data) { EPfVS  
for(int i=data.length/2;i>2;i/=2){ ,\"gN5[$(  
for(int j=0;j insertSort(data,j,i); /d;l:  
} =-Tetp  
} .v!e=i}.  
insertSort(data,0,1); z81!F'x;  
} 3"RZiOyv  
G(e?]{(  
/** g_=ZcGC  
* @param data <Z_`^~!  
* @param j xJlq2cK  
* @param i m#P&Yd4T  
*/ [Y+ bW#'  
private void insertSort(int[] data, int start, int inc) { eGg#=l=  
int temp; 1Tkz!  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R'U(]&e.j  
} Ews Ja3 `  
} <ZEll[0L  
} CdjGYS  
w?"l4.E%  
} ->UrWW^  
v.J#d>tvf  
快速排序: zc5_;!t  
1Zzw|@#>o  
package org.rut.util.algorithm.support; X[}%iEWzT  
ponvi42u  
import org.rut.util.algorithm.SortUtil; (d\bSo$]  
Vh&KfYY  
/** Qmn5-yiw1d  
* @author treeroot >Li?@+Zl  
* @since 2006-2-2 -tJ*F!w6U  
* @version 1.0 Z]CH8GS~<  
*/ h[?28q$  
public class QuickSort implements SortUtil.Sort{ +/'jX?7x%  
+g&W423k_  
/* (non-Javadoc) nz+KA\iW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S{06bLXU"  
*/  73X]|fy  
public void sort(int[] data) { 4B 6Aw?  
quickSort(data,0,data.length-1); .Dz /MSl  
} KYaf7qy]  
private void quickSort(int[] data,int i,int j){ D=$<E x^p  
int pivotIndex=(i+j)/2; ml2HA4X&$Y  
file://swap 8V= o%[t  
SortUtil.swap(data,pivotIndex,j); D\JYa@*?.h  
TUt)]"h<  
int k=partition(data,i-1,j,data[j]); fAi113q!  
SortUtil.swap(data,k,j); d29HEu  
if((k-i)>1) quickSort(data,i,k-1); A |B](MW%O  
if((j-k)>1) quickSort(data,k+1,j); u""= 9>0  
QO%K`}Q}  
} h9mR+ng*oD  
/** WF7RMQ51j  
* @param data J0k~%   
* @param i kp|reKM/  
* @param j ~%ZO8X:^  
* @return 82<!b]^1  
*/ pY@+.V`a  
private int partition(int[] data, int l, int r,int pivot) { ;f?bb*1  
do{ kaLRI|hC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L.'N'-BV  
SortUtil.swap(data,l,r); l/5/|UE9  
} `N0E;=g  
while(l SortUtil.swap(data,l,r); ~cz t=  
return l; DDEn63{  
} Syb:i(Y  
iGIaZ!j aW  
} {iRNnh   
"Q( 8FF  
改进后的快速排序: m,b<b91  
~[{| s' )  
package org.rut.util.algorithm.support; 9azPUf) C  
K;~dZ  
import org.rut.util.algorithm.SortUtil; w~`P\i@  
x0] *'^aA  
/** *MNY1+RJ  
* @author treeroot C*$/J\6xy  
* @since 2006-2-2 >4c 1VEi  
* @version 1.0 4^r}&9C ~  
*/ ME.LS2'n  
public class ImprovedQuickSort implements SortUtil.Sort { }z[se)s  
0;9 LIL5  
private static int MAX_STACK_SIZE=4096; sq%f%?(V  
private static int THRESHOLD=10; 0IZV4{  
/* (non-Javadoc) vzU%5,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [,c>-jA5  
*/ NTC,Vr\A  
public void sort(int[] data) { S/4k fsN  
int[] stack=new int[MAX_STACK_SIZE]; !PgYn  
oUqNA|l T  
int top=-1; ;AaF;zPV  
int pivot; Wd7*sa3T  
int pivotIndex,l,r; )-mB^7uXGv  
8dv1#F|  
stack[++top]=0; 1/ a,7Hl  
stack[++top]=data.length-1; mEGMe@37  
.*Z]0~ &|  
while(top>0){ Ugn"w E  
int j=stack[top--]; nsPM`dz/  
int i=stack[top--]; {_Y\Y&#  
 : 2?du  
pivotIndex=(i+j)/2; c~V\,lcI  
pivot=data[pivotIndex]; ??F{Gli"C`  
m{g{"=}YR  
SortUtil.swap(data,pivotIndex,j); yC -4wn*  
C-M op,w  
file://partition xc!"?&\*  
l=i-1; \<5xf<{  
r=j; o{qbbJBC  
do{ B`vV[w?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tNjrd}8s  
SortUtil.swap(data,l,r); 6l4l74  
} p(v.sP4w  
while(l SortUtil.swap(data,l,r); }*%%GPJ  
SortUtil.swap(data,l,j); <rU(zm  
7-^d4P+|g  
if((l-i)>THRESHOLD){ Ne=D $o  
stack[++top]=i; w$pv  
stack[++top]=l-1; 0@ -LV:jU  
} ` p)#!  
if((j-l)>THRESHOLD){ M*x_1h5n  
stack[++top]=l+1; 'F@'4[uda  
stack[++top]=j; *StJ5c_kg2  
} U@9n 7F  
-kJ`gdS  
} 8?PNyO-Wt5  
file://new InsertSort().sort(data); gw H6r3=y(  
insertSort(data); fE(rDQI  
} ,QK>e;:Be  
/** 4 1Ru@  
* @param data N-^\e)ln  
*/ j,~h:MT  
private void insertSort(int[] data) { %l>^q`p  
int temp; ^P[-HA|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p%}oo#%J  
} ZY83, :<  
} L"IdD5`7T  
} $zJ.4NA  
[u<1DR  
} ? xy~N?N  
v8LKv`I's  
归并排序: )0NA*<Q+.  
_ ZJP]5  
package org.rut.util.algorithm.support; XRZmg "  
HxkhlNB  
import org.rut.util.algorithm.SortUtil; SW bwD/SN  
]86U -`p  
/** /@0wbA  
* @author treeroot .6r&<*  
* @since 2006-2-2 P5[.2y_qM  
* @version 1.0 >]Y`-*vw&  
*/ o0AREZ+I  
public class MergeSort implements SortUtil.Sort{ r t f}4.  
NbSwn}e_  
/* (non-Javadoc) =x=#Etj|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |S/nq_g]  
*/ myH#.$=A  
public void sort(int[] data) { 4re^j4L~o  
int[] temp=new int[data.length]; `*WR[c  
mergeSort(data,temp,0,data.length-1); =E{1QA0  
} (}'0K?  
Pj^6.f+  
private void mergeSort(int[] data,int[] temp,int l,int r){ a 6[bF  
int mid=(l+r)/2; MwiT1sB~  
if(l==r) return ; #*5A]"k  
mergeSort(data,temp,l,mid); n:HF&j4C,  
mergeSort(data,temp,mid+1,r); xmbkn}@A  
for(int i=l;i<=r;i++){ Tc{r}y[)  
temp=data; R`Q9|yF\  
} |06G)r&  
int i1=l; h T4fKc7P  
int i2=mid+1; u"nyx0<  
for(int cur=l;cur<=r;cur++){ tlc&Wx  
if(i1==mid+1) i: 1V\q%  
data[cur]=temp[i2++]; Tf` ~=fg%  
else if(i2>r) QH;1*  
data[cur]=temp[i1++]; o: qB#8X  
else if(temp[i1] data[cur]=temp[i1++]; 68d(6?OgW  
else \!`*F :7]-  
data[cur]=temp[i2++]; |NL$? %I  
} XBCz\f  
} eQA89 :j,  
xCGvLvFn  
} zcDVvP  
st~f}w@  
改进后的归并排序: 7R ;!  
H;|^z@RB<  
package org.rut.util.algorithm.support; D.X%wJ8  
O]`CSTv'_  
import org.rut.util.algorithm.SortUtil; j$BM$q/c  
8 "|')f#  
/** dnH?@ K  
* @author treeroot .Q4EmpByCg  
* @since 2006-2-2 yo3'\I  
* @version 1.0 FK0nQ{uB"  
*/ RaKL KZn  
public class ImprovedMergeSort implements SortUtil.Sort { VcA87*pel  
YaDr6)  
private static final int THRESHOLD = 10; >$k_tC'"  
X]M)T  
/* Gw$U0HA[,  
* (non-Javadoc) o^biO!4,  
* 0Kq\ oMn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T-uI CMEf  
*/ MYDAS-  
public void sort(int[] data) { M{1't  
int[] temp=new int[data.length]; :(N3s9:vz  
mergeSort(data,temp,0,data.length-1); x%5n&B  
} XzkC ]e'  
u+kXJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { = T!iM2  
int i, j, k; eE+zL ~CE  
int mid = (l + r) / 2; 4cl}ouG  
if (l == r) ZF>zzi+@  
return; b1R%JY7/S  
if ((mid - l) >= THRESHOLD) S!0<aFh  
mergeSort(data, temp, l, mid); ==~X8k|{E  
else 9H`Q |7g(5  
insertSort(data, l, mid - l + 1); gM '_1zs U  
if ((r - mid) > THRESHOLD) [YLaR r  
mergeSort(data, temp, mid + 1, r); ['Hl$2 j  
else 0PjWfM8%  
insertSort(data, mid + 1, r - mid); k& 2U&  
-$>R;L  
for (i = l; i <= mid; i++) { LY-fp+  
temp = data; ?l &S:` L  
} p$0G EYwM  
for (j = 1; j <= r - mid; j++) { IR(qjm\V  
temp[r - j + 1] = data[j + mid]; Lp.,:z7  
} $<OX\f%  
int a = temp[l]; W c{<DE?J  
int b = temp[r]; ]%!:'#  
for (i = l, j = r, k = l; k <= r; k++) { M| :wC  
if (a < b) { nRzD[ 3I  
data[k] = temp[i++]; %A|9=x*  
a = temp; 79^Y^.D  
} else { _8v8qT}O~4  
data[k] = temp[j--]; >,yE;zuw  
b = temp[j]; tt $DWmm  
} 9@9(zUS|  
} ,6uON@  
} |#^wYZO1U  
iimTr_TEt  
/** GWsvN&nr  
* @param data  ?%Hj,b  
* @param l ycz6-kEp  
* @param i )"`(+Ku&c  
*/ ph qx<N@  
private void insertSort(int[] data, int start, int len) { wuR Q H]N  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Z ]V^s8>  
} B4Ko,=pg  
} |3<tDq@+  
} W< _9*{|E;  
} W$>srdG0$  
5|z>_f.^pS  
堆排序: t6(LO9Qc  
[H<![Z1*r  
package org.rut.util.algorithm.support; OGpy\0%  
">_<L.,I  
import org.rut.util.algorithm.SortUtil; @ qy n[C  
SaceIV%(  
/** aDce Ohfx  
* @author treeroot 6O"?wN%$  
* @since 2006-2-2 |Ii[WfFA|J  
* @version 1.0 R9@Dd  
*/ E%8Op{zv_  
public class HeapSort implements SortUtil.Sort{ v'na{"  
$a.fQ<,\X  
/* (non-Javadoc)  ieo Naq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lQ(I/[qVd  
*/ X67^@~l  
public void sort(int[] data) { [CxnGeKK  
MaxHeap h=new MaxHeap(); Mm7;'Zbg  
h.init(data); q#s:2#=  
for(int i=0;i h.remove(); +}1h  
System.arraycopy(h.queue,1,data,0,data.length); &\6Buw_  
} 7~&  
r*_z<^d  
private static class MaxHeap{ Bp&7:snGt  
IC"lsNq52  
void init(int[] data){ .\)`Xj[?  
this.queue=new int[data.length+1]; T-,T)R`R  
for(int i=0;i queue[++size]=data; +U9m  
fixUp(size); l Oxz&m  
} n@%Q 2_  
} {&7%wZ"t_  
M:TN^ rA|  
private int size=0; T1$=0VSEa+  
y#tuwzE  
private int[] queue; zNG]v?JAh  
.Z?@;2<l  
public int get() { T<XGG_NOl  
return queue[1]; 8k[=$Ro  
} p6S{OUiG  
|y%pJdPk=  
public void remove() { W3Gg<!*Uo  
SortUtil.swap(queue,1,size--); zy8Z68%E`*  
fixDown(1); Dnk}  
} l/*NscYtQ  
file://fixdown 6="Qwrk  
private void fixDown(int k) { 0SS,fs<w3  
int j; X;:qnnO  
while ((j = k << 1) <= size) { :)JIKP%$\)  
if (j < size %26amp;%26amp; queue[j] j++; C?dQ QB$  
if (queue[k]>queue[j]) file://不用交换 Odn`q=  
break; )T0%<(J  
SortUtil.swap(queue,j,k); ~V34j:  
k = j; _L8|Z V./  
} "2'4b  
} IhR;YM[K  
private void fixUp(int k) { pzr\<U`  
while (k > 1) { '0b!lVe  
int j = k >> 1; n<,:;0{  
if (queue[j]>queue[k]) mH`K~8pRg  
break; LK>A C9ak<  
SortUtil.swap(queue,j,k); ?58,Ja  
k = j; |; [XZ ZZ  
} p9X{E%A<:  
} r< MW8  
 {4]sJT  
} v[l={am{/  
meF.`fh  
} ,]Gi942  
};{Qx  
SortUtil: CU`yi.)T{  
WNnB s  
package org.rut.util.algorithm; b;;mhu  
6Dl]d %.  
import org.rut.util.algorithm.support.BubbleSort; EN2H[i+,  
import org.rut.util.algorithm.support.HeapSort; pZxuV(QP`  
import org.rut.util.algorithm.support.ImprovedMergeSort; bT>1S2s  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2|a5xTzH  
import org.rut.util.algorithm.support.InsertSort; #3~hF)u&/  
import org.rut.util.algorithm.support.MergeSort; |7CFm  
import org.rut.util.algorithm.support.QuickSort; [LF<aR5  
import org.rut.util.algorithm.support.SelectionSort; ^QG;:.3v  
import org.rut.util.algorithm.support.ShellSort; h4,g pV>t  
MA`.&MA.  
/** B+VD53 V  
* @author treeroot aw\0\'}  
* @since 2006-2-2 L$zB^lSM  
* @version 1.0 1XppC[))  
*/ !+EE*-c1c  
public class SortUtil { E\Qm09Dj`<  
public final static int INSERT = 1; qrr[QEFW  
public final static int BUBBLE = 2; [z[<onFIq  
public final static int SELECTION = 3; /LK,:6  
public final static int SHELL = 4; F`Ld WA  
public final static int QUICK = 5; D$?}M>  
public final static int IMPROVED_QUICK = 6; [ !<  
public final static int MERGE = 7; XG!s+ShFV  
public final static int IMPROVED_MERGE = 8; kVRh/<s  
public final static int HEAP = 9; TC* 78;r  
mVsghDESJ)  
public static void sort(int[] data) { ` W} Bc  
sort(data, IMPROVED_QUICK); OF1fS\P<>  
} sx^0*h-Qq  
private static String[] name={ -dyN Ah?=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" x=I|O;"><  
}; 5 (cgHr"  
5>x?2rp  
private static Sort[] impl=new Sort[]{ a%YohfsY?U  
new InsertSort(), lKSd]:3Xm  
new BubbleSort(), S_ER^Pkg  
new SelectionSort(), }K.2  
new ShellSort(), o"gtWAGH  
new QuickSort(), Dg=!d)\  
new ImprovedQuickSort(), u*6Y>_iA  
new MergeSort(), umuE5MKY<  
new ImprovedMergeSort(), $! R]!s  
new HeapSort() dd-`/A@  
}; !Y,*Zc$R  
&;2@*#,  
public static String toString(int algorithm){ NsN =0ff  
return name[algorithm-1]; I]iTD  
} Yw6^(g8  
;RzbPlkl  
public static void sort(int[] data, int algorithm) { V;IV2HT0J"  
impl[algorithm-1].sort(data); ;oM7H*W C  
} @%b&(x^UD  
FoKAF &h7  
public static interface Sort { N <e72x  
public void sort(int[] data); kSUpEV+/  
} !(i}FFn{:  
G ~X93J  
public static void swap(int[] data, int i, int j) { _I/uW|>  
int temp = data; [XbNZ6  
data = data[j]; %8c2d  
data[j] = temp; M "\j7(  
} f=--$o0U~  
} +t7n6  
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