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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。 -c<1H)W  
插入排序: 61eKGcjs:  
[jtj~]&mO  
package org.rut.util.algorithm.support; 5  a*'N~  
Um0<I)  
import org.rut.util.algorithm.SortUtil; !tFU9Zt  
/** +_|cZlQ&  
* @author treeroot H$qdU!c  
* @since 2006-2-2 DT7-v4Zd  
* @version 1.0 T$8$9D_u  
*/ :BZx ) HxQ  
public class InsertSort implements SortUtil.Sort{ oRJP5Y5na  
;Cp/2A}Xx  
/* (non-Javadoc) [2H(yLwO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !\D] \|Bo  
*/ iw]B QjK  
public void sort(int[] data) { ;6 &=]I  
int temp; IG3K Pmu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y8(?:#ZC  
} ,ex(pmZ;  
} 2zrWR%B  
} VkP:%-*#v  
X m:gD6;9  
} ?D$b%G{  
s%TO(vT  
冒泡排序: oe_[h]Hgl  
5KPPZmO  
package org.rut.util.algorithm.support; 0.+Z;j  
g9r5t';  
import org.rut.util.algorithm.SortUtil; ?PxYS%D_L  
O'sr[  
/** d=5}^v#4  
* @author treeroot f!R^;'a  
* @since 2006-2-2 f6_|dvY3  
* @version 1.0 bEXHB  
*/ I>4Tbwy.-  
public class BubbleSort implements SortUtil.Sort{ F+m4  
]2s Zu7  
/* (non-Javadoc) jiB>.te  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z?!:=x>7m  
*/ 3b[[2x_UU  
public void sort(int[] data) { {pJ@I=q  
int temp; <n2{+eO  
for(int i=0;i for(int j=data.length-1;j>i;j--){ I9j+x ])  
if(data[j] SortUtil.swap(data,j,j-1); fM[fS?W  
} L4A/7Ep  
} +q, n}@y=  
} /dvnQW4}8  
} &+r ;>  
6_}){ZR  
} :>-sITeY  
!m O] zn  
选择排序: \S@=zII_  
Z$=$oJzB  
package org.rut.util.algorithm.support; ujp,D#xHP  
eq 1 4  
import org.rut.util.algorithm.SortUtil; NVh>Q>B$_  
2,QApW_Y  
/** kE(-vE9  
* @author treeroot 6Oqnb+  
* @since 2006-2-2 {c EK z\RX  
* @version 1.0 1X_!%Z  
*/ -N!soJ<  
public class SelectionSort implements SortUtil.Sort { <Phr`/  
{^O/MMB\\%  
/* SVEA  
* (non-Javadoc) Gqz)='  
* J<:D~@qq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AeQ&V d|  
*/ ,xM*hN3A  
public void sort(int[] data) { ]( 6vG$\  
int temp; @KRn3$U  
for (int i = 0; i < data.length; i++) { Fu$Gl$qV?%  
int lowIndex = i; ]` Gz_e  
for (int j = data.length - 1; j > i; j--) { `[u>NEb  
if (data[j] < data[lowIndex]) { !";$Zu  
lowIndex = j; 27i<6PAC[A  
} n)7$xYuH  
} ]be2jQx3  
SortUtil.swap(data,i,lowIndex); \c^jaK5  
} +#"Ic:  
} (V%vFD1)  
dE!=a|Pl  
} k)t8J\  
-+2xdLa63  
Shell排序: 2X |jq4  
.B-,GD}  
package org.rut.util.algorithm.support; 0+`*8G)  
!Fs) "?  
import org.rut.util.algorithm.SortUtil; 91Sb= 9  
+A3\Hj&W  
/** .8xacVyK2  
* @author treeroot #Lt+6sa]2@  
* @since 2006-2-2 -hV KPIb  
* @version 1.0 *ww(5 t  
*/ FrM~6A_  
public class ShellSort implements SortUtil.Sort{ cx%9UK*c  
k  5kX  
/* (non-Javadoc) iYs?B0*JWK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :hdh$}y  
*/ 3T^dgWXEG  
public void sort(int[] data) { >N"PLSY1  
for(int i=data.length/2;i>2;i/=2){ QF6JZQh<  
for(int j=0;j insertSort(data,j,i); C^v -&*v  
} o:\j/+]  
} `D4'`Or-U  
insertSort(data,0,1); mP+yjRw  
} d'nuk#r  
n& &U9sf?  
/** X(q=,^Mp  
* @param data ~a,'  
* @param j ]*Ki7h |B  
* @param i Olh-(u:9+O  
*/ ON! G{=7  
private void insertSort(int[] data, int start, int inc) { l'8wPmy%N  
int temp; i_^NbC   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); p%_ :(  
} F09AX'nj  
} 'U Cx^-  
} Gf.o{  
#u(,#(P'#  
} KftM4SFbK  
Pu*UZcXY  
快速排序: |VF"Cjw?  
X,CF Y  
package org.rut.util.algorithm.support; *%+buHe  
f=Y9a$.:M  
import org.rut.util.algorithm.SortUtil; $ !=:ES  
[<$d@}O  
/** 8uW:_t]q  
* @author treeroot q9]L!V 9Rv  
* @since 2006-2-2 7u0R=q  
* @version 1.0 r}Av"  
*/ _ 9]3S>Rn  
public class QuickSort implements SortUtil.Sort{ l~c> jm8.  
e!'u{>u  
/* (non-Javadoc) (19<8a9G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J, >PLQAa  
*/ }f*S 9V  
public void sort(int[] data) { XmR5dLc8  
quickSort(data,0,data.length-1); <Wq{ V;$  
} /hR]aw  
private void quickSort(int[] data,int i,int j){ o:*iT =l  
int pivotIndex=(i+j)/2; ixpG[8s  
file://swap mSeN M  
SortUtil.swap(data,pivotIndex,j); 2 -8:qmP(  
fbkjK`_q  
int k=partition(data,i-1,j,data[j]); P#oV ^  
SortUtil.swap(data,k,j); {Oszq(A  
if((k-i)>1) quickSort(data,i,k-1); >:|q J$J.  
if((j-k)>1) quickSort(data,k+1,j); Q(7l<z  
_3>zi.J/  
} 2a-hf|b1  
/** =LA@E&,j  
* @param data #E)]7!_XG  
* @param i fdHxrH >*  
* @param j y5h[^K3  
* @return *&MkkI#  
*/ LRs; >O  
private int partition(int[] data, int l, int r,int pivot) { d69VgLg  
do{ L@GD$F=<0  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Wb xksh:)Q  
SortUtil.swap(data,l,r); ``Rb-.Fq,  
} l]&)an  
while(l SortUtil.swap(data,l,r); _.LWc^Sg  
return l; x*)O<K  
} N Q=YTRU  
Dw,f~D$+ic  
} k JFHUR  
c>.Xc[H  
改进后的快速排序: Lcm!e  
v21?  
package org.rut.util.algorithm.support; ~Wv?p4  
!~v>&bCG>9  
import org.rut.util.algorithm.SortUtil; Z8UM0B=i  
-C<aB750O)  
/** v:;cTX=x`#  
* @author treeroot 5!*a,$S  
* @since 2006-2-2 G$<0_0GF  
* @version 1.0 Y.#+Yh[  
*/ *h6i9V%'  
public class ImprovedQuickSort implements SortUtil.Sort { 0k [6  
nsk 6a  
private static int MAX_STACK_SIZE=4096; 49GCj`As  
private static int THRESHOLD=10; m"]ys #  
/* (non-Javadoc) M+:wa@K l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Wo7=aR  
*/ 1fZ:^|\  
public void sort(int[] data) { &.B6P|N'  
int[] stack=new int[MAX_STACK_SIZE]; IrC=9%pd$R  
3}Qh`+Yj]  
int top=-1; K4~O x  
int pivot; "dTXT  
int pivotIndex,l,r; '"^JNb^I  
CXZeL 1+  
stack[++top]=0; !f 6  
stack[++top]=data.length-1; [*t E HW  
") D!OW]  
while(top>0){ qC1@p?8$  
int j=stack[top--]; EVsZ:Ra^k  
int i=stack[top--]; t;3.;  
[DwB7l)O(  
pivotIndex=(i+j)/2; g(k|"g`*  
pivot=data[pivotIndex]; #J_i 5KmXJ  
^ EOjq  
SortUtil.swap(data,pivotIndex,j); -&}E:zoe  
0 HmRl  
file://partition Q2Rj0E`  
l=i-1; w3D_ c~  
r=j; K-3 _4As  
do{ $EF@x}h:A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); d .A0(*k,  
SortUtil.swap(data,l,r); M-Bw9`#Jw  
} ~JpUO~i/  
while(l SortUtil.swap(data,l,r); _!7o   
SortUtil.swap(data,l,j); |sz9l/,lG  
): 6d_g{2  
if((l-i)>THRESHOLD){ .>n|#XK  
stack[++top]=i; 605|*(  
stack[++top]=l-1; stPCw$@  
} r8rR_ M{P  
if((j-l)>THRESHOLD){ oV`sCr5%  
stack[++top]=l+1;  \Z':hw  
stack[++top]=j; se[};t:  
} m@ YL Z  
Ay]5GA!W+  
} "RLb wm~  
file://new InsertSort().sort(data); >Fz$DKr[  
insertSort(data); HV@:!zM  
} {QID@  
/** P>|2~YxjU  
* @param data hh9{md\  
*/ Cx[4 /~_<  
private void insertSort(int[] data) { iq$/ 6!t  
int temp; <=Qk^Y2k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %L3]l  
} Npqbxb  
} %:*HzYf  
} 32yNEP{  
eORt qX8*  
} /V&Y@j  
kN)ev?pQ[  
归并排序: ~6tY\6$9f  
e 3K  
package org.rut.util.algorithm.support; 8T4J^6  
iweP3u##  
import org.rut.util.algorithm.SortUtil; 7 <xxOY>y  
|Bp?"8%*l  
/** `c(@WK4  
* @author treeroot rzu^br9X  
* @since 2006-2-2 7nmo p7  
* @version 1.0 z( wXs&z;  
*/ {/ta1&xyG  
public class MergeSort implements SortUtil.Sort{ \IKr+wlN8  
]NCOi ?Odx  
/* (non-Javadoc) cc[w%jlA#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yWzTHW`)Mr  
*/ Zu,f&smb  
public void sort(int[] data) { *D,T}N  
int[] temp=new int[data.length]; E' Bt1 u  
mergeSort(data,temp,0,data.length-1); jkq+j^  
} a;K:~R+@,  
>EY0-B  
private void mergeSort(int[] data,int[] temp,int l,int r){ o&]qjFo\m  
int mid=(l+r)/2; P]n ' q  
if(l==r) return ; S~T[*Z/m  
mergeSort(data,temp,l,mid); X 6)LpMm  
mergeSort(data,temp,mid+1,r); yFSL7`p+  
for(int i=l;i<=r;i++){ ^|Y!NHYH$Z  
temp=data; fOVRtSls  
} z?PF9QL1  
int i1=l; > L%%B-  
int i2=mid+1; DxlX-  
for(int cur=l;cur<=r;cur++){ {)mlXo(On  
if(i1==mid+1) :|a[6Uwl\V  
data[cur]=temp[i2++]; ydt1ED0Q-  
else if(i2>r) <$ 5\^y,V  
data[cur]=temp[i1++]; 3r\QLIr L8  
else if(temp[i1] data[cur]=temp[i1++]; ZU`"^FQ3A  
else P1t5-q  
data[cur]=temp[i2++]; '&9b*u";x(  
} [Mi~4b  
} {T.VB~C  
S'txY\  
} R`c5-0A  
Yr+&|;DB  
改进后的归并排序: n#*cVB81  
f =Nm2(e  
package org.rut.util.algorithm.support; T4[eBO  
0PN{ +<? .  
import org.rut.util.algorithm.SortUtil; 6[cMPp x  
Z1Wra-g  
/** CV k8MA  
* @author treeroot O'k"6sBb  
* @since 2006-2-2 b#sO1MXv  
* @version 1.0  ZM"t.  
*/ OHU(?TBo  
public class ImprovedMergeSort implements SortUtil.Sort { >a<;)K^1  
>(3 y(1;  
private static final int THRESHOLD = 10; ;/v^@  
u>BR WN  
/* u% FA.  
* (non-Javadoc) PYZ8@G  
* {0?76|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) % :NI@59  
*/ V{][{5SR  
public void sort(int[] data) { 1peN@Yk2W  
int[] temp=new int[data.length]; ^dro*a,  
mergeSort(data,temp,0,data.length-1); /#tOi[0[  
} b{A#P?  
mwt3EV5  
private void mergeSort(int[] data, int[] temp, int l, int r) { K$4Ky&89  
int i, j, k; Ae"B]Cxb_X  
int mid = (l + r) / 2; ]]+"`t,-  
if (l == r) O?@AnkOhn  
return; s^cHR1^  
if ((mid - l) >= THRESHOLD) 8qT/1b  
mergeSort(data, temp, l, mid); ;yr 'K  
else "zugnim  
insertSort(data, l, mid - l + 1); ?n}L+|  
if ((r - mid) > THRESHOLD) %NvY~,  
mergeSort(data, temp, mid + 1, r); BwR)--75  
else IMj{n.y4  
insertSort(data, mid + 1, r - mid); ;*8$BuD  
i]P]o)  
for (i = l; i <= mid; i++) { Yv>% 5`  
temp = data; =dPrG=A   
} +S$x}b'5q  
for (j = 1; j <= r - mid; j++) { ]c08`  
temp[r - j + 1] = data[j + mid]; v''$qMQ)  
} \QVL%,.%M  
int a = temp[l]; 8{AzB8xp  
int b = temp[r]; 'Ag?#vB  
for (i = l, j = r, k = l; k <= r; k++) { G=DRz F  
if (a < b) { p?5zwdX+`  
data[k] = temp[i++]; "_lSw3  
a = temp; ?Pa5skqR  
} else { I'JFt>]  
data[k] = temp[j--]; `U(FdT  
b = temp[j]; kxh $R>  
} 9Z} -%Z[,)  
} D ,nF0p  
} Up~#]X  
&U:;jlST9  
/** $aEL>, X  
* @param data \]zH M.E1  
* @param l u-D%: lz85  
* @param i LBTf}T\  
*/ iNcB6,++  
private void insertSort(int[] data, int start, int len) { BPW2WSm@<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); U2;_{n*g%  
} WmeV[iI  
} {$Qw]?Yv  
} W 5-=,t  
} Esd A %`  
d4~!d>{n|c  
堆排序: ZjWI~"]  
/>H9T[3=  
package org.rut.util.algorithm.support; #}o*1  
}5`Kn}rY  
import org.rut.util.algorithm.SortUtil; L^dF )y?  
Y-v6xUc{F  
/** (m13 ong  
* @author treeroot `j9 ;9^  
* @since 2006-2-2 A2..gs/  
* @version 1.0 arm26YA-,  
*/ X-=49)  
public class HeapSort implements SortUtil.Sort{ fTMn  
EW]rD  
/* (non-Javadoc) #V@[<S2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4PR!OB  
*/ Lc=t,=OhGe  
public void sort(int[] data) { m;'ebkq  
MaxHeap h=new MaxHeap(); L\a G.\  
h.init(data); )m|)cLT&  
for(int i=0;i h.remove(); wZ0RI{)s'  
System.arraycopy(h.queue,1,data,0,data.length); UZz/v#y~  
} `f S$@{YI_  
]@0C1 r  
private static class MaxHeap{ )1N~-VuT  
y2KR^/LN|Y  
void init(int[] data){ 7*.nd  
this.queue=new int[data.length+1]; h:xvnyaI  
for(int i=0;i queue[++size]=data; <v%Q|r  
fixUp(size); -V7dSi  
} wt]onve}%  
} Z ):q1:y  
MR}=tO  
private int size=0; ~7ZWtg;B  
x.8fxogz  
private int[] queue; ew?4;  
"Doz~R\\  
public int get() { 1R-WJph  
return queue[1]; 7_HFQT1.N  
} ^VOFkUp)  
evjj~xkte  
public void remove() { sFt"2TVr3  
SortUtil.swap(queue,1,size--); l|v`B6(  
fixDown(1); S"H djEF7\  
} I'}&s|6  
file://fixdown JV ydTvc  
private void fixDown(int k) { Q`kV| pjg  
int j; IK1'" S|  
while ((j = k << 1) <= size) { nvbzCtC  
if (j < size %26amp;%26amp; queue[j] j++; jl9hFubwW  
if (queue[k]>queue[j]) file://不用交换 TXdo,DPv7  
break; !y+uQ_IS@  
SortUtil.swap(queue,j,k); x n?$@  
k = j; 4( $p8J  
} MQ#k`b#()  
} 2)hfYLi  
private void fixUp(int k) { Y O&@  
while (k > 1) { ]n}aePl}oU  
int j = k >> 1; SP.k]@P  
if (queue[j]>queue[k]) 0RgE~x!hI  
break; F_G .$a Cc  
SortUtil.swap(queue,j,k); fJOw E g|  
k = j; b+1!qNuCW#  
} 1%ENgb:8  
} L+N\B@ 0-  
M0yv= g  
} w p\-LO~  
Q p7h|<  
} 1J([*)  
=WT&unw}  
SortUtil: o%7-<\qS  
Jr5dw=B gw  
package org.rut.util.algorithm; CFC15/yU  
1*" 7q9x  
import org.rut.util.algorithm.support.BubbleSort; F/x2}'  
import org.rut.util.algorithm.support.HeapSort; 4O<sE@X  
import org.rut.util.algorithm.support.ImprovedMergeSort; R:4@a ':H  
import org.rut.util.algorithm.support.ImprovedQuickSort; 'i',M+0>jC  
import org.rut.util.algorithm.support.InsertSort; S /"G=^~  
import org.rut.util.algorithm.support.MergeSort; 7r&lW<:>  
import org.rut.util.algorithm.support.QuickSort; {xx}xib3  
import org.rut.util.algorithm.support.SelectionSort; "}MP{/  
import org.rut.util.algorithm.support.ShellSort; v*[UG^+)  
47N,jVt4  
/** _K}q%In  
* @author treeroot nrHC;R.nE  
* @since 2006-2-2 aq)g&.dw?  
* @version 1.0 , # =TputM  
*/ s_  t/  
public class SortUtil { C~egF=w  
public final static int INSERT = 1; ? X6M8`  
public final static int BUBBLE = 2; r0!')?#Z  
public final static int SELECTION = 3; f0vO(@I  
public final static int SHELL = 4; l^Ob60)2  
public final static int QUICK = 5; 793 15A  
public final static int IMPROVED_QUICK = 6; >TMd1? ,  
public final static int MERGE = 7; )$RV)  
public final static int IMPROVED_MERGE = 8; (<YBvpt4>  
public final static int HEAP = 9; ^D<CoxG  
}f;WYz5  
public static void sort(int[] data) { /{f"0]-RA  
sort(data, IMPROVED_QUICK); Qo)Da}uo20  
} &Ts!#OcB,  
private static String[] name={ !m^;wkrY  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" GF6o  
}; $33E-^  
Q7rBc wm5  
private static Sort[] impl=new Sort[]{ qCg<g  
new InsertSort(), (>vyWd]  
new BubbleSort(), O 2-n-  
new SelectionSort(), 6#7hMQ0&;O  
new ShellSort(), H1f='k]SZ  
new QuickSort(), w i[9RD@  
new ImprovedQuickSort(), i,h30J  
new MergeSort(), ULqI]k(  
new ImprovedMergeSort(), Q66 +  
new HeapSort() c ef[T(>  
}; +N=HI1^54R  
"]#Ij6ml  
public static String toString(int algorithm){ t5%cpkgh4  
return name[algorithm-1]; <4+P37^ ~  
} T:u>7?8o  
s]% C z\  
public static void sort(int[] data, int algorithm) { f[1cN`|z  
impl[algorithm-1].sort(data); E/g"}yR  
} s> m2qSu  
`Jk0jj6Z  
public static interface Sort { VxBBZsZO~  
public void sort(int[] data); ;+<IWDo  
} }%p:Xv@X!  
I% u 2 ce  
public static void swap(int[] data, int i, int j) { "Yh;3tI4*  
int temp = data; GQ;0KIN  
data = data[j]; @oE 5JM  
data[j] = temp; xRe`Duy:  
} #m,H1YH M  
} `0\Z*^>  
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