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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。 3r)<:4a u&  
插入排序: !/6`< eQ `  
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package org.rut.util.algorithm.support; W+'|zhn  
#Zm%U_$<  
import org.rut.util.algorithm.SortUtil; \*5_gPj!d  
/** T =l4Vb{>  
* @author treeroot j>5D4}*]f  
* @since 2006-2-2 %Tn0r|K  
* @version 1.0 ,pgpu !  
*/ nI-^   
public class InsertSort implements SortUtil.Sort{ ;JK !dzi}  
<oE(I)r4,  
/* (non-Javadoc) UY_'F5X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !1:364  
*/ ~vVsxC$.  
public void sort(int[] data) { R9/(z\'}  
int temp; `xO9xo#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?W%9H\;  
} %U.aRSf/  
}  {ws:g![  
} "v"w ER?  
483BrFV  
} \9*,[mvC  
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冒泡排序: j&G*$/lTO6  
>l\?K8jL9  
package org.rut.util.algorithm.support; J&xH "U  
B/(]AWi+  
import org.rut.util.algorithm.SortUtil; M``I5r*cg  
CywQ  
/** 6NO_S  
* @author treeroot Zz\e:/  
* @since 2006-2-2 fR=B/`  
* @version 1.0 mgB7l0)b  
*/ TZT1nj"n  
public class BubbleSort implements SortUtil.Sort{ +,xl_,Z6  
|kHPk)}I]  
/* (non-Javadoc) _$+lyea   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l%aiG+z%6}  
*/ )$*T>.JA  
public void sort(int[] data) { 50:$km\  
int temp; -!dL <  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a!1\,.  
if(data[j] SortUtil.swap(data,j,j-1); 7PDz ]i  
} OZ*V7o  
} BPoY32d"_  
} F+Qp mVU  
} H+]>*^'8  
+%$'( t s  
} J~0_  
>-s\$8En'  
选择排序: *Ge2P3  
D (MolsKc?  
package org.rut.util.algorithm.support; ?lh `>v  
pZu2[  
import org.rut.util.algorithm.SortUtil; pq"3)+3:  
, qj  
/** !+?,y/*5(  
* @author treeroot ,FvBZ.4c3=  
* @since 2006-2-2 : kVEB<G  
* @version 1.0 AXV+8$ :R  
*/ : -@o3Syg  
public class SelectionSort implements SortUtil.Sort { ^K4#_H#"  
r@_`ob RW;  
/* aj1o   
* (non-Javadoc) >Lh+(M;+F  
* 'J&&F2O%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .=WsB@+   
*/ KJ Gh)  
public void sort(int[] data) { Z:l.{3J$  
int temp; \}0J%F1  
for (int i = 0; i < data.length; i++) { L{K:XiPn  
int lowIndex = i; {2`:7U ~|  
for (int j = data.length - 1; j > i; j--) { 1M|DaAI  
if (data[j] < data[lowIndex]) { Fm@G@W7,m  
lowIndex = j; :%M[|Fj  
} o2cZ  
} k%iZ..  
SortUtil.swap(data,i,lowIndex); C:77~f-+rQ  
} 9/rX%  
} w<?v78sT  
"o +" Jd  
} rBv  
S!0ocS!t  
Shell排序: >&K1+FSmyJ  
x)M=_u2 _  
package org.rut.util.algorithm.support; T{1Z(M+  
i"}%ib*X  
import org.rut.util.algorithm.SortUtil; %KxL{ HY  
.".xNHR#  
/** lW! U:  
* @author treeroot 3YyB0BMW  
* @since 2006-2-2 "(uEcS2<  
* @version 1.0 hjB G`S#  
*/ rz c}2I  
public class ShellSort implements SortUtil.Sort{ o#X|4bES  
_ri1RK,  
/* (non-Javadoc) 1LTl=tS#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;~Eb Q  
*/ $:I~y| !1  
public void sort(int[] data) { @D!KFJ  
for(int i=data.length/2;i>2;i/=2){ 0ad -4  
for(int j=0;j insertSort(data,j,i); ;<Dou7=  
} $gsn@P>"  
} ,nqG* o  
insertSort(data,0,1); RW!D! ~  
} +kF$I7LN  
 =(kwMJ  
/** (>*<<a22  
* @param data JO:40V?op  
* @param j k^3|A3A  
* @param i `3!ERQU  
*/ 9QaEUy*,  
private void insertSort(int[] data, int start, int inc) { #t /.fd  
int temp; {K-]nh/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9Ny{2m=Ye  
} \~4uEk"]  
} g:/l5~b  
} `A5^D  
V\8vJ3.YV  
} o<f[K}t9  
_@3?yv~ D  
快速排序: C' C'@?]  
SRq0y,d  
package org.rut.util.algorithm.support; OM!CP'u#{  
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import org.rut.util.algorithm.SortUtil; [\NyBc  
/esSM~*H  
/** >#z*gCO5,  
* @author treeroot pEIc ?i*  
* @since 2006-2-2 rf"%D<bb  
* @version 1.0 unqX<6hu  
*/ f $MVgX  
public class QuickSort implements SortUtil.Sort{ <>,V> k|  
T)Byws  
/* (non-Javadoc) [xT2c.2__J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) noiUi>G;:  
*/ 6 flc  
public void sort(int[] data) { \HFeEEKH  
quickSort(data,0,data.length-1); g+gHIb7{  
} (q+U5Ls6  
private void quickSort(int[] data,int i,int j){ 0eY$K7 U  
int pivotIndex=(i+j)/2; *V(TNLIh;  
file://swap LGq}wxq  
SortUtil.swap(data,pivotIndex,j); EJP##eGx  
olzP=08aaV  
int k=partition(data,i-1,j,data[j]); T_CYSS|fX  
SortUtil.swap(data,k,j); s$e0;C!D  
if((k-i)>1) quickSort(data,i,k-1); @)mH"u!(7  
if((j-k)>1) quickSort(data,k+1,j); K1O0/2O  
|,F/_    
} )P\Vd #  
/** ^YzFEu$  
* @param data 6dO )]  
* @param i kKnz F  
* @param j YK#bzu ,!  
* @return }?xu/C  
*/ (v*$ExF  
private int partition(int[] data, int l, int r,int pivot) { 9,y*kC  
do{ #"%=7(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _A%} >:q  
SortUtil.swap(data,l,r); R*I{?+  
} VJ P]Jy_  
while(l SortUtil.swap(data,l,r); jJ-j   
return l; z8+3/jLN0B  
}  Z+ [Nco  
H)1< ;{:  
} u= ( kii=/  
RWf4Wh?d  
改进后的快速排序: ('!90  
#LEK?]y  
package org.rut.util.algorithm.support; +hg|!SS@5  
zRsG$)B  
import org.rut.util.algorithm.SortUtil; A<.`HCv2  
0hK)/!Y  
/** 5% C-eB  
* @author treeroot >(EMZ5  
* @since 2006-2-2 :M(%sv</  
* @version 1.0 O [GG<Um  
*/ <\@JbL*  
public class ImprovedQuickSort implements SortUtil.Sort { Kxb_9y0`r  
DPI iGRw  
private static int MAX_STACK_SIZE=4096; niY9`8  
private static int THRESHOLD=10; ='<0z?Af  
/* (non-Javadoc) rWI6L3,i+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L}CjC>R!  
*/ cMxTv4|wui  
public void sort(int[] data) { OL&ku &J_  
int[] stack=new int[MAX_STACK_SIZE]; L2Uk/E  
TGu`r>N51  
int top=-1; W@jBX{k  
int pivot;  g!5`R`7  
int pivotIndex,l,r; x]6OE]]8L  
Zuod1;qIh  
stack[++top]=0; aB~?Y+m  
stack[++top]=data.length-1; ;,n{6`  
H `Fe |6I&  
while(top>0){ 9r% O  
int j=stack[top--]; Ak[}s|,)  
int i=stack[top--]; {Cnz7TVB  
-sl] funRy  
pivotIndex=(i+j)/2; 7u-o7#,X2  
pivot=data[pivotIndex]; !Q =H)\3  
# (B <n  
SortUtil.swap(data,pivotIndex,j); GQO}E@W6C  
.0;Z:x_3  
file://partition MHJH@$|]  
l=i-1; JSQNx2VqQ  
r=j; VqLqj$P  
do{ ;_)&#X,?(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); #:v}d+  
SortUtil.swap(data,l,r); JX@/rXFY}  
} 37Vs9w  
while(l SortUtil.swap(data,l,r); `~QS3zq  
SortUtil.swap(data,l,j); GGsDR%U  
sF}T9 Ue  
if((l-i)>THRESHOLD){ _M= \s>;G  
stack[++top]=i; dX-Xzg  
stack[++top]=l-1; 82Dw,Cn  
} %JmSCjt`G  
if((j-l)>THRESHOLD){ z/aZD\[_  
stack[++top]=l+1; !_)*L+7f_  
stack[++top]=j; n#,|C`2r  
} 1foy.3g-  
.<j\"X(  
} x\!Q[  
file://new InsertSort().sort(data); lO>w|=<  
insertSort(data); -kT *gIJ}  
} j-@3jFu  
/** fEF1&&8^  
* @param data B uV@w-|  
*/ @13vn x  
private void insertSort(int[] data) { ;QQLYT  
int temp; ntE;*F yH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); TyVn5XHl^  
} IGEs1  
} U~QIO O  
} 8R}CvzI  
NL%5'8F>,  
} FP=%e]vJ  
sA=WU(4^  
归并排序: =b2/g [  
#Q}`kFB`  
package org.rut.util.algorithm.support; -v#0.3zm  
-R@mnG 5  
import org.rut.util.algorithm.SortUtil; #x! h BS!  
 2bwf(  
/** 'Y{fah  
* @author treeroot fF37P8Ir  
* @since 2006-2-2 ={y Mk  
* @version 1.0 @w|'ip5@  
*/ ],9%QE  
public class MergeSort implements SortUtil.Sort{ Xc -'&"  
FB3C'!'<)  
/* (non-Javadoc) oHH-joYnn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jFfuT9oId  
*/ )e`$'y@L$  
public void sort(int[] data) { Qvt  
int[] temp=new int[data.length]; j4>1a   
mergeSort(data,temp,0,data.length-1); Y S )Q#fP  
} B*#lkMr  
t=\y|Idc  
private void mergeSort(int[] data,int[] temp,int l,int r){  oZTKG'  
int mid=(l+r)/2; 45fk+#  
if(l==r) return ; zX{K\yp  
mergeSort(data,temp,l,mid); *T0{ yI  
mergeSort(data,temp,mid+1,r); [A99e`  
for(int i=l;i<=r;i++){ ib8@U}Vn1  
temp=data; 7xidBVx  
} z/yNFY]i  
int i1=l; %7WGodlXW  
int i2=mid+1; *^+8_%;1  
for(int cur=l;cur<=r;cur++){ qELy'\  
if(i1==mid+1) $|-joY  
data[cur]=temp[i2++]; }cuU5WQ?%  
else if(i2>r) }_m/3*x_  
data[cur]=temp[i1++]; ]G m"U!h*  
else if(temp[i1] data[cur]=temp[i1++]; LRl2@&z<  
else 70IBE[T&  
data[cur]=temp[i2++]; >DqV^%2l  
} jA9&hbQuL  
} ak]:ir`o  
ea!_/Y  
} ,q$'hYTaJ  
i|A0G%m]$  
改进后的归并排序: x%HX0= (  
CPGiKE  
package org.rut.util.algorithm.support; 8V$pdz|[  
4,kdP)Md$  
import org.rut.util.algorithm.SortUtil; {1a%CsCM  
!0Hx1I<*x  
/** :(gZ\q">k  
* @author treeroot dNd(57  
* @since 2006-2-2 oqeA15k$  
* @version 1.0 %!Z9: +;B  
*/ {x$WBy9  
public class ImprovedMergeSort implements SortUtil.Sort { 3gN#[P  
;#a^M*e  
private static final int THRESHOLD = 10; zyb>PEd.  
GSck^o2{  
/* ^i>Tm9vM  
* (non-Javadoc) Bg.~#H  
* &|cg`m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hg<d%7.  
*/ VnqgN  
public void sort(int[] data) { _Ec9g^I10  
int[] temp=new int[data.length]; Kxs_R#k  
mergeSort(data,temp,0,data.length-1); >6xZF'4  
} >drG,v0qh  
X.^S@3[  
private void mergeSort(int[] data, int[] temp, int l, int r) { R0|dKKzS  
int i, j, k; h$3o]~t  
int mid = (l + r) / 2; a'3|EWS ?  
if (l == r) K1i@.`na/$  
return; B.)!zv\{  
if ((mid - l) >= THRESHOLD) 53>y<  
mergeSort(data, temp, l, mid); DL$O274uZ  
else ,ru2C_LQ  
insertSort(data, l, mid - l + 1); T\Zf`.mt  
if ((r - mid) > THRESHOLD) [N] 5)n  
mergeSort(data, temp, mid + 1, r); S3Q^K.e?  
else `1;m:,9  
insertSort(data, mid + 1, r - mid); !kAjne8]d  
E8$k}I  
for (i = l; i <= mid; i++) { j0^%1  
temp = data; SvE3E$*  
} !$}:4}56F  
for (j = 1; j <= r - mid; j++) { <UI^~Azc#  
temp[r - j + 1] = data[j + mid]; |]s/NNU  
} 9eG{"0)  
int a = temp[l]; s.VtmAH  
int b = temp[r]; l-?B1gd,l  
for (i = l, j = r, k = l; k <= r; k++) { ]mO$Tg&s~  
if (a < b) { L-J 7z+{  
data[k] = temp[i++]; aNd6# yU$  
a = temp; A5U//y![{  
} else { S}QvG&c  
data[k] = temp[j--]; \53(D7+  
b = temp[j]; Ph{7S43  
} =v-qao7xCV  
} uO=yQ&  
} hn-+]Y:  
*2nQZ^c.  
/** .x6c.Y.S  
* @param data #J4{W84B  
* @param l W|C>X=zTi  
* @param i #kho[`9  
*/ o|r8x_!+  
private void insertSort(int[] data, int start, int len) { gzV&S5A{_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xLZJ[:gr  
} kBF.TGT[l  
} /#WRd}IjK  
} a| w.G "W  
} W8bh49   
yiourR)H<  
堆排序: uP;qs8  
R ;XG2  
package org.rut.util.algorithm.support; by*?PhfF  
V?_:-!NJ(  
import org.rut.util.algorithm.SortUtil; 3 VNPdXsh  
:9nqQJ+~  
/** i -kj6N5  
* @author treeroot ^a,Oi%  
* @since 2006-2-2 3mmp5 d  
* @version 1.0 }vx+/J  
*/ fLGZ@-qA0  
public class HeapSort implements SortUtil.Sort{ pv LA:LW2  
^v5v7\!  
/* (non-Javadoc) }MW7,F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2=?:(e9  
*/ fv;3cxQp  
public void sort(int[] data) { |<:Owd=  
MaxHeap h=new MaxHeap(); kK62yz,  
h.init(data); <in#_Of {E  
for(int i=0;i h.remove(); 0ZRIi70u  
System.arraycopy(h.queue,1,data,0,data.length); *!mT#Vm^  
} q4Rvr[  
1$+-?:i C  
private static class MaxHeap{ CP5vo-/)-  
x-hr64WFK  
void init(int[] data){  /y2)<{{I  
this.queue=new int[data.length+1]; p'@| O q&  
for(int i=0;i queue[++size]=data; Y! 8 I  
fixUp(size); 3izGMH_`  
} utH/E7^8  
} F=T};b  
seNJ6p=`  
private int size=0; +1uAzm4SL  
\E}YtN#  
private int[] queue; 2cnyq$4k  
j'\!p):H  
public int get() { f*(W%#*|  
return queue[1]; Q/u2Q;j>  
} 0`=>/Wr39  
&1Zq C;  
public void remove() { xAZ-_}'tW  
SortUtil.swap(queue,1,size--);  _klT  
fixDown(1); e-@.+ f2CC  
} sWG_MEbu  
file://fixdown W`vgH/lSnZ  
private void fixDown(int k) { _"4u?C#  
int j; -g5o+RT@  
while ((j = k << 1) <= size) { xE{PsN1 X;  
if (j < size %26amp;%26amp; queue[j] j++; per$%;5E"  
if (queue[k]>queue[j]) file://不用交换 k Q Sx65  
break; R&v V! d  
SortUtil.swap(queue,j,k); 2oO&8:`tv  
k = j; ?FV>[&-h#I  
} Oh&k{DWE$  
} 6=aXz2.f  
private void fixUp(int k) { !e<D2><^  
while (k > 1) { .+.'TY--  
int j = k >> 1; 8lNkY`P7s  
if (queue[j]>queue[k]) 3EVAB0/$  
break; U8||)  +  
SortUtil.swap(queue,j,k); %}`zq8Q;  
k = j; _MmSi4]yd  
} [yyL2=7  
} $'I-z.GV  
Dr_ (u<[  
} XCP/e p  
<3SO1@?  
} =sIkA)"!=  
-wdd'G  
SortUtil: 8AGP*"gI  
Y|3n^%I  
package org.rut.util.algorithm; uOv0ut\\G  
:(?F(Q^  
import org.rut.util.algorithm.support.BubbleSort; Y!1x,"O'H  
import org.rut.util.algorithm.support.HeapSort; gfPR3%EXs  
import org.rut.util.algorithm.support.ImprovedMergeSort; 'xG:v)(  
import org.rut.util.algorithm.support.ImprovedQuickSort; eX 0due  
import org.rut.util.algorithm.support.InsertSort; DI )!x {"  
import org.rut.util.algorithm.support.MergeSort; Q7{/ T0  
import org.rut.util.algorithm.support.QuickSort; ';vL j1v  
import org.rut.util.algorithm.support.SelectionSort; _U<r@  
import org.rut.util.algorithm.support.ShellSort; E3~Wyfd7  
?D,8lABkT  
/** |[3%^!f\  
* @author treeroot xNAa,aMM  
* @since 2006-2-2 K}feS(Ji  
* @version 1.0 x^959QO~  
*/ ^sP-6 ^  
public class SortUtil { "<=HmE-;  
public final static int INSERT = 1; #GVf+8"  
public final static int BUBBLE = 2; 02F\1fXS  
public final static int SELECTION = 3; 0!5w0^1  
public final static int SHELL = 4; Vx#n0z  
public final static int QUICK = 5; UVUoXv)N  
public final static int IMPROVED_QUICK = 6; ,ozgnhZY  
public final static int MERGE = 7; eKv{N\E  
public final static int IMPROVED_MERGE = 8; u$MXO].Q  
public final static int HEAP = 9; 4\pUA4  
Tw]].|^f-  
public static void sort(int[] data) { B]lM69Hz  
sort(data, IMPROVED_QUICK); {Y6;/".DM  
} ETMF.-P  
private static String[] name={ "oLY";0(=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" A?;KfVq  
}; vFx0B?  
0)0,&@])7  
private static Sort[] impl=new Sort[]{ I%b}qC"5M  
new InsertSort(), 6E))4 lW  
new BubbleSort(), D\LXjEm e.  
new SelectionSort(), P:QSr8K  
new ShellSort(), <?E~Qc t  
new QuickSort(), Oe_*(q&  
new ImprovedQuickSort(), `%<^$Ng;  
new MergeSort(), ~6!TMVr  
new ImprovedMergeSort(), 5f- eWW]!  
new HeapSort() tXg>R _\C  
}; L Rn)  
p3W-*lE  
public static String toString(int algorithm){ CYH o~VIK  
return name[algorithm-1]; g54b}vzm  
} F4|U\,g  
U^~jB= =]  
public static void sort(int[] data, int algorithm) { sqE? U*8.-  
impl[algorithm-1].sort(data); ]N4?*S*jd)  
} JIh:IR(ta  
RbN# dI'  
public static interface Sort { 9J(jbJ7p  
public void sort(int[] data); Pq<]`9/w^w  
} )ePQN~#K}  
lG/h[  
public static void swap(int[] data, int i, int j) { d>-k-X-[  
int temp = data; 0)HZ5^J  
data = data[j]; AD0pmD  
data[j] = temp; cd3;uB4\,  
} ZGgM- O1  
} L; (J6p]h  
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