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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。 /_l$h_{DH  
插入排序: 6A23H7  
j|Hyv{sM  
package org.rut.util.algorithm.support; #l?E2 U4WL  
f\U(7)2  
import org.rut.util.algorithm.SortUtil; Z]\VOA>  
/** !xxdC  
* @author treeroot ]oIP;J:&  
* @since 2006-2-2 _(%;O:i  
* @version 1.0 me@xl }  
*/ sm?V%NX&  
public class InsertSort implements SortUtil.Sort{ *'ffMnSZ  
wX Kg^%t\  
/* (non-Javadoc) k ^(RSu<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d$T856  
*/ 3F ]30  
public void sort(int[] data) { qb 1JE[2F  
int temp; ^Ez`WP  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >#Ue`)d`aY  
} tR`^c8gD  
} &6q67  
} dlJc~|  
(29BS(|!  
} VSLi{=#  
*mtS\J  
冒泡排序: }u?DK,R  
%  db  
package org.rut.util.algorithm.support; ~lH_d[  
-4!S?rHwd+  
import org.rut.util.algorithm.SortUtil; q)rxv7Iu\  
%&}gt+L(M  
/** K zWqHq  
* @author treeroot f)#rBAkt  
* @since 2006-2-2 bJ5 VlK67R  
* @version 1.0 ^={s(B2  
*/ (JdZl2A.  
public class BubbleSort implements SortUtil.Sort{ _Qd C V`  
U]}f]GK  
/* (non-Javadoc) wGhy"1g#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y1OpZ  
*/ +Jw+rjnP  
public void sort(int[] data) { U#>K(  
int temp; T7# }& >  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 2C[xrZa^  
if(data[j] SortUtil.swap(data,j,j-1); h;DLD8L  
} ,0\P r  
} |!hN!j*)  
} Hkzx(yTi  
} uRCZGg&V?#  
]o2jS D  
} MN<uIqG  
Yc p<N>)  
选择排序: p,K!'\  
:F`"CR^,  
package org.rut.util.algorithm.support; UiQF4Uc"  
eJ+@<+vr;x  
import org.rut.util.algorithm.SortUtil; *|Bt!  
~ya@ YP]';  
/** U^ ;H{S  
* @author treeroot sg%Ptp  
* @since 2006-2-2 E'+?7ZGWj  
* @version 1.0 4zhg#  
*/ 8>AST,  
public class SelectionSort implements SortUtil.Sort { X|4_}b> x  
'Rq2x-72}  
/* WY$c^av<  
* (non-Javadoc) %4^NX@1jV  
* p5`={'>-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )QAS7w#k  
*/ 3A!Qu$r9  
public void sort(int[] data) { $SfYO!n7Q  
int temp; K+3+?oYKH  
for (int i = 0; i < data.length; i++) { :rSCoi>K  
int lowIndex = i; &F~97F)A)  
for (int j = data.length - 1; j > i; j--) { i% n9RuULh  
if (data[j] < data[lowIndex]) { Wxa</n8S[n  
lowIndex = j; A@ZsL  
} 9o+e3TXp#  
} Ctx{rf_~  
SortUtil.swap(data,i,lowIndex); CXh >'K  
} c1ptN  
} M,dp;  
")i_{C,b^  
} :!L>_ f  
1 Sz v4  
Shell排序: g_;4@jwTP"  
;( [^+_/  
package org.rut.util.algorithm.support; ,A[NcFdCB  
_g%,/y 9y  
import org.rut.util.algorithm.SortUtil; S7(tGD  
UId?a} J  
/** #'8'5b  
* @author treeroot  Y3g<%6  
* @since 2006-2-2 @+yjt'B  
* @version 1.0 NX8. \Pf#  
*/ K$c?:?wmo  
public class ShellSort implements SortUtil.Sort{ (05a 9  
{r?+PQQ#  
/* (non-Javadoc) e'2w-^7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oid;s!-S6  
*/ p%-;hL!  
public void sort(int[] data) { t#2szr+  
for(int i=data.length/2;i>2;i/=2){ l*b0uF  
for(int j=0;j insertSort(data,j,i); G2w0r,[  
} JZ)w  
} 7_`_iymR  
insertSort(data,0,1); ZY*_x)h+#7  
} ]SUW"5L-  
AZva  
/** [/U5M>#n  
* @param data (p(-E  
* @param j y*T@_on5  
* @param i 8qwPk4  
*/ wit  
private void insertSort(int[] data, int start, int inc) { glZjo  
int temp; ld7B{ ?]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); k iu#THF  
} ^zKP5nzL  
} XGAR8=tic  
} uQ3W =  
Ygc.0VKMR  
} (r/))I9^  
x,Z:12H0  
快速排序: KouIzWf.  
H]( TSt<Q"  
package org.rut.util.algorithm.support; s]Z++Lh<{  
V(M7d>N5G  
import org.rut.util.algorithm.SortUtil; &IP`j~ b  
3bagL)'iz  
/** qRCUkw} fs  
* @author treeroot YLp#z8 1e  
* @since 2006-2-2 }[: i!t.m  
* @version 1.0 )<`/Aaie  
*/ BHR(B]EI  
public class QuickSort implements SortUtil.Sort{ e#^ vA$d  
wUH:l  
/* (non-Javadoc) @6V kNe9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X4/3vY  
*/ Kza5_ 7p`L  
public void sort(int[] data) { OySn[4`(i  
quickSort(data,0,data.length-1); y6&o+;I$[  
} {CQI*\O  
private void quickSort(int[] data,int i,int j){ W.> }5uVl6  
int pivotIndex=(i+j)/2; Vo9Fl Yj  
file://swap 8*EqG5OP  
SortUtil.swap(data,pivotIndex,j); K<p)-q  
9^@#Ua  
int k=partition(data,i-1,j,data[j]); u(~(+1W  
SortUtil.swap(data,k,j); !BR@"%hx  
if((k-i)>1) quickSort(data,i,k-1); &"=<w  
if((j-k)>1) quickSort(data,k+1,j); &?^"m\K4J*  
M<ba+Qn$  
} ?GGBDql  
/** .=@CF8ArG  
* @param data &Y-jK<  
* @param i *a'I  
* @param j G!U `8R  
* @return M<xF4L3]  
*/ L DdgI  
private int partition(int[] data, int l, int r,int pivot) { g3c,x kaO  
do{ Z@bKYfGM  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); `86})xz{  
SortUtil.swap(data,l,r); wj\kx\+  
} \;0UP+  
while(l SortUtil.swap(data,l,r); }T"&4Rvs2R  
return l; 2[1lwV  
} 35Fs/Gf-n  
>+Y@rj2  
} RC^k#+  
yK w.69.  
改进后的快速排序: r^`~GG!,Q  
gt!t Du  
package org.rut.util.algorithm.support; 7w?N-Q$y  
G],W{<Pe  
import org.rut.util.algorithm.SortUtil; |t_SN,)dd  
Q\aC:68  
/** ),Igu  
* @author treeroot AizLzR$OG  
* @since 2006-2-2 JxlZ,FF$@  
* @version 1.0 lz(}N7SLa  
*/ zZiga q"  
public class ImprovedQuickSort implements SortUtil.Sort { `FmRoMW9+  
T_oL/x_;  
private static int MAX_STACK_SIZE=4096; :)kWQQ+,  
private static int THRESHOLD=10; x*wr8$@J  
/* (non-Javadoc) .Kssc lSD1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 838@jip  
*/ 3PEW0b*]Pf  
public void sort(int[] data) { "BvDLe':  
int[] stack=new int[MAX_STACK_SIZE];  5 c1{[  
\8]("l}ms8  
int top=-1; trlZ  
int pivot; Cg]S`R-  
int pivotIndex,l,r; v(^;%  
&W N R{  
stack[++top]=0; 4GexYDk'#  
stack[++top]=data.length-1; `Lr|KuFN  
@O HsM?nW  
while(top>0){ Gy!bPVe  
int j=stack[top--]; h/7_IuD  
int i=stack[top--]; Y"E*#1/  
,ZvlK N  
pivotIndex=(i+j)/2; _nec6=S6(  
pivot=data[pivotIndex];  Qo+Y  
wcW}Sv[r  
SortUtil.swap(data,pivotIndex,j); 9Qn*frdY,  
vn^*  
file://partition qwYq9A$+  
l=i-1; =6[R,{|C  
r=j; dwVo"_Yr  
do{ | ?ma?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); K&;/hdS=F  
SortUtil.swap(data,l,r); F`57;)F  
} I G B)  
while(l SortUtil.swap(data,l,r); ]%[.>mR  
SortUtil.swap(data,l,j); hc]5f3Z  
Yw,LEXLY  
if((l-i)>THRESHOLD){ /\5u-o)  
stack[++top]=i; 92Rm{n   
stack[++top]=l-1; aV G4D f  
} teJY*)d  
if((j-l)>THRESHOLD){ PB!*&T'!  
stack[++top]=l+1; .gA4gI1kH  
stack[++top]=j; 7 '{wl,u  
} cTL W}4m%g  
^']*UD;  
} td|O#R  
file://new InsertSort().sort(data); XO}v8nWV  
insertSort(data); w s7LDY&(  
} ~4M?[E&  
/** d*Kg_He-  
* @param data =p&uQ6.i+  
*/ IvM>z03  
private void insertSort(int[] data) { xcQ:&q  
int temp; n(jrK9]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s^GE>rf  
} Pi=B\=gs  
} ykNPKzW:  
} }N@+bNh~  
8C<%Y7)/  
} <Y^)/ s  
o<7'(Pz  
归并排序: d? 4-"9Y  
A'T: \Wl  
package org.rut.util.algorithm.support; en29<#8TO  
{r1}ACw{  
import org.rut.util.algorithm.SortUtil; U Kf0cU  
?xtP\~  
/** xU'% 6/G  
* @author treeroot V)cL=4G  
* @since 2006-2-2 `<* tp@  
* @version 1.0 U46Z~B  
*/ ]/odp/jm  
public class MergeSort implements SortUtil.Sort{ MO_;8v~0  
h2vD*W  
/* (non-Javadoc) AHn Yfxv_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z:JJ>mxV  
*/ SHN'$f0Mb  
public void sort(int[] data) { }&LLo  
int[] temp=new int[data.length]; ^ 4{"h  
mergeSort(data,temp,0,data.length-1); myDcr|j-a  
} <@+{EK'`q  
8Xz \,}$O  
private void mergeSort(int[] data,int[] temp,int l,int r){ =yLJGNK[  
int mid=(l+r)/2; P#qQde/y  
if(l==r) return ; '~[JV>5  
mergeSort(data,temp,l,mid); <xr\1VjA  
mergeSort(data,temp,mid+1,r); N m@UM*D  
for(int i=l;i<=r;i++){ $@<cZ4  
temp=data; Pa */&WeB  
} ~A-D>.ZH  
int i1=l; fnn /akGKI  
int i2=mid+1; ;g_<i_ *x#  
for(int cur=l;cur<=r;cur++){ 7SjWofv  
if(i1==mid+1) `r*bG=  
data[cur]=temp[i2++]; ] F2{:RW  
else if(i2>r) ]McDN[h:  
data[cur]=temp[i1++]; N3?hu}  
else if(temp[i1] data[cur]=temp[i1++]; #~6au6LMC  
else 5U<;6s  
data[cur]=temp[i2++]; \mDBOC0eK  
} BVv{:m{w  
} '"J``=  
RV_+-m{]  
} i" >kF@]c8  
=J^FV_1rJ  
改进后的归并排序: v42Z&PO   
L'<.#(|  
package org.rut.util.algorithm.support; d`4F  
U t.#h="  
import org.rut.util.algorithm.SortUtil; \Culf'iX  
.@3bz  
/** aYcc2N%C  
* @author treeroot :U/x(  
* @since 2006-2-2 i E)Fo.H  
* @version 1.0 Q a3+9  
*/ D@o8Gerq~  
public class ImprovedMergeSort implements SortUtil.Sort { YB"=eld  
\Qei}5P,  
private static final int THRESHOLD = 10; z-?WU  
c_FnJ_++f  
/* & _mp!&5XV  
* (non-Javadoc) 7aJ:kumDZ  
* UGK,+FN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oE'Flc.  
*/ =x} p>#o,J  
public void sort(int[] data) { Q i\"b  
int[] temp=new int[data.length]; )UAkg  
mergeSort(data,temp,0,data.length-1); ZA'Qw2fF0  
} ZMmf!cKY:'  
d@>1m:p  
private void mergeSort(int[] data, int[] temp, int l, int r) { 0'~Iv\s  
int i, j, k; g0A,VX:2  
int mid = (l + r) / 2; 0M 5m8  
if (l == r) Q7XlFjzcm  
return; {V5eHn9/Q'  
if ((mid - l) >= THRESHOLD) <,I]=+A  
mergeSort(data, temp, l, mid); s:Io5C(  
else D~7L~Q]xI  
insertSort(data, l, mid - l + 1); +/DT#}JE  
if ((r - mid) > THRESHOLD) < <]uniZ\  
mergeSort(data, temp, mid + 1, r); +l(lpp>,  
else Y@Ti2bI`v  
insertSort(data, mid + 1, r - mid); B%/N{i*Z  
W,ik ;P\  
for (i = l; i <= mid; i++) { f%Vdao[  
temp = data; ?$0t @E  
} oO][X  
for (j = 1; j <= r - mid; j++) { >PoVK{&y  
temp[r - j + 1] = data[j + mid]; d^Zr I\AJ  
} G~KYFNHr  
int a = temp[l]; {x<yDDIv_  
int b = temp[r]; )m.U"giG++  
for (i = l, j = r, k = l; k <= r; k++) { Wd]MwDcO  
if (a < b) { A7=k 9|  
data[k] = temp[i++]; R>dd#`r"  
a = temp; &~#y-o"  
} else { i'`[dwfS  
data[k] = temp[j--]; EN{o3@ O'  
b = temp[j]; CCU<t Q  
} _68{ {.  
} z 3N'Xk  
} =Bw2{]w  
(V9 ;  
/** y$U(oIU>  
* @param data t$-!1jq  
* @param l 5;q{9wvqO  
* @param i B8.uzX'p  
*/ V3q[#.o  
private void insertSort(int[] data, int start, int len) { $&jte_hv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^Rc*X'Iz(!  
} [ %6(1$Ih  
} C5x*t Q|  
} ^s_7-p])(  
} 9q_c`  
yNOoAnGT W  
堆排序: QI*<MF,1  
OS sYmF  
package org.rut.util.algorithm.support; dBEm7.nh  
aDZ]{;  
import org.rut.util.algorithm.SortUtil; {W$K@vuV;?  
,f^ ICM  
/** osZ] R  
* @author treeroot ?z0N- A2C2  
* @since 2006-2-2 LZ<^b6Dxk  
* @version 1.0 /a?qtRw  
*/ hD9b2KZv  
public class HeapSort implements SortUtil.Sort{ J+r:7NvZ  
+a0` ,Jc  
/* (non-Javadoc) #dDM "s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lGpci  
*/ _kT{W]   
public void sort(int[] data) { RJOW#e :  
MaxHeap h=new MaxHeap(); p,7, tx  
h.init(data); t$g@+1p4  
for(int i=0;i h.remove(); 3 @%XR8ss  
System.arraycopy(h.queue,1,data,0,data.length); <d~si^*\ch  
} ?tx."MZ  
j9~lf  
private static class MaxHeap{ ]Gf`nJDV  
*cAI gO7  
void init(int[] data){  D`3`5.b  
this.queue=new int[data.length+1]; do:IkjU~  
for(int i=0;i queue[++size]=data; )W*A[c 2  
fixUp(size); ZY=a[K  
} qylI/,y{  
} vp(ow]Q  
,-[z?dvO  
private int size=0; T,h 9xl9i  
f"SK3hI$p  
private int[] queue; @7K(_Wd  
'8=/v*j>?  
public int get() { + f,Kt9Cy  
return queue[1]; i>e?$H,/  
} <nc6 &+  
iTVZo?lVo  
public void remove() { w|c200Is}e  
SortUtil.swap(queue,1,size--); fwNj@fl_,e  
fixDown(1); LB`{35b-  
} (dTQ,0  
file://fixdown **JBZ\'  
private void fixDown(int k) { =Y Y 7V!  
int j; %`*On~  
while ((j = k << 1) <= size) { [Qcht,\^v  
if (j < size %26amp;%26amp; queue[j] j++; Ll .P>LH  
if (queue[k]>queue[j]) file://不用交换 ty'/i!/\  
break; HI7w@V8Ed  
SortUtil.swap(queue,j,k); e~7FK_y#0  
k = j; 8Qhj_  
} .wB'"z8L  
} ")<5 VtV  
private void fixUp(int k) { ,Oe:SZJ>  
while (k > 1) { :kFPPx?  
int j = k >> 1; >wb Uxl%{5  
if (queue[j]>queue[k]) N'i)s{'  
break; [iZH[7&j  
SortUtil.swap(queue,j,k); DL uaM?7  
k = j; dz!m8D0  
} W4UK?#S+  
} {@6:kkd  
sNM ]bei  
} ~d\^ynQ  
t YxN^VqU  
} O_]hbXV0  
Ec@cW6g(%  
SortUtil: &gKDw!al  
a~ dgf:e`  
package org.rut.util.algorithm; > l]Ble  
7ug"SV6Hb  
import org.rut.util.algorithm.support.BubbleSort; 05g %5vHF  
import org.rut.util.algorithm.support.HeapSort; p6V#!5Q  
import org.rut.util.algorithm.support.ImprovedMergeSort; d::9,~  
import org.rut.util.algorithm.support.ImprovedQuickSort; YxrMr9>l1  
import org.rut.util.algorithm.support.InsertSort; ` FOCX;  
import org.rut.util.algorithm.support.MergeSort; 4XAs^>N+  
import org.rut.util.algorithm.support.QuickSort; V0BT./ B\<  
import org.rut.util.algorithm.support.SelectionSort; <ZheWl  
import org.rut.util.algorithm.support.ShellSort; hz*T"HJ]t  
lv9Tq5C  
/** JOJuGB-d  
* @author treeroot fp*6Dv_  
* @since 2006-2-2 [$;cjys  
* @version 1.0 1\~I "$}  
*/ < Sgc6>)  
public class SortUtil { ~(8fUob  
public final static int INSERT = 1; HNCu:$Wr@  
public final static int BUBBLE = 2; KJ:z\N8eo  
public final static int SELECTION = 3; n_Qua|R  
public final static int SHELL = 4; qYJ<I'Ux O  
public final static int QUICK = 5; /QWXEL/M=  
public final static int IMPROVED_QUICK = 6; |'z24 :8  
public final static int MERGE = 7; 1y\bJ  
public final static int IMPROVED_MERGE = 8; 1YQYZ^11  
public final static int HEAP = 9; AwjXY,2  
ZuybjV1/f6  
public static void sort(int[] data) { j#~~_VA~  
sort(data, IMPROVED_QUICK); /Ry% K4$  
} )z\#  
private static String[] name={ c BZ,"kp-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Xdx8HB@L  
}; @&Z^WN,x  
: NA(nA 3  
private static Sort[] impl=new Sort[]{ w^Yo)"6  
new InsertSort(), qxDMDMN  
new BubbleSort(), =yz"xWH  
new SelectionSort(), KE ?NQMU  
new ShellSort(), >$TvCw  
new QuickSort(), &l3(+4Sh  
new ImprovedQuickSort(), Z|Oq7wzEH  
new MergeSort(), tsL ; wT_  
new ImprovedMergeSort(), vi *A 5  
new HeapSort() 2|=hF9  
}; |Y05 *!\P*  
%~x?C4L8  
public static String toString(int algorithm){ kl]MP}wc  
return name[algorithm-1]; rR :ZTfJs"  
} )WbWp4  
J@2wPKh?Yp  
public static void sort(int[] data, int algorithm) { @fYVlHT%E  
impl[algorithm-1].sort(data); nH&z4-1Y?  
} :ujpLIjvVG  
IHdA2d?.]  
public static interface Sort { h?p_jI  
public void sort(int[] data); ^h$*7u"^y  
} {'tfU  
+^+'.xQ  
public static void swap(int[] data, int i, int j) { x<M::")5!V  
int temp = data; n)"JMzjQ<  
data = data[j]; F0p=|W  
data[j] = temp; 6T'UWh0S  
} lQ`=PFh  
} n}.e(z_"  
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