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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。 %{&,5|8  
插入排序: QVo>Uit   
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package org.rut.util.algorithm.support; CI^s~M >  
>Et~h65d5  
import org.rut.util.algorithm.SortUtil; LpN3cy>U  
/** ;Pe=cc"@  
* @author treeroot 1C(sBU"  
* @since 2006-2-2 +P%k@w#<Z  
* @version 1.0 !TO+[g!  
*/ z[' 2  
public class InsertSort implements SortUtil.Sort{ ~,.'#=V  
) (0=w4  
/* (non-Javadoc) moL3GV%]Gq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pKaU [1x?%  
*/ USZBk0$  
public void sort(int[] data) { r*9*xZ>8u  
int temp; 2=uwGIF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~]SCf@pRk  
} 63/a 0Yn  
} @W-0ybv  
} zJov*^T-C  
yX/{eX5dr  
} $N\k*=  
8&yI1XM|  
冒泡排序: lN*beOj  
7QRkXs  
package org.rut.util.algorithm.support; \&[(PNl  
wU|jw(  
import org.rut.util.algorithm.SortUtil; ic}mru  
L}rYh`bUP[  
/** p4D.nB8  
* @author treeroot J T6}m  
* @since 2006-2-2 h 27f0x9  
* @version 1.0 6B+?X5-6DH  
*/ nWA>u J5  
public class BubbleSort implements SortUtil.Sort{ w@pJ49  
/  QT>"  
/* (non-Javadoc) P=l 7m*m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *P8CzF^>\&  
*/ X0]{8v%  
public void sort(int[] data) { ~ +h4i'  
int temp; G|u)eW  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [9G=x[  
if(data[j] SortUtil.swap(data,j,j-1); "RgP!  
} [}yPy))A  
} }46Zfg\T6n  
} 6q^\pJY%&7  
} hbEqb{#}@  
#4<=Ira5  
} !*S,S{T8  
snYeo?|b  
选择排序: xjD."q  
~O|~M_Z  
package org.rut.util.algorithm.support; z_Hkw3?  
I51I(QF=  
import org.rut.util.algorithm.SortUtil; ~F%sO'4!  
q1v7(`O  
/** 29cx(  
* @author treeroot *HB 32 =qD  
* @since 2006-2-2 gegM&Xo  
* @version 1.0 H4W!Md  
*/ -fp/3-  
public class SelectionSort implements SortUtil.Sort { o`G6!  
-ijzo%&qA  
/* q;*'V9#  
* (non-Javadoc) ESUO I  
* "Mz#1Laby`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =cO5Nt  
*/ IwRP,MQ~  
public void sort(int[] data) { rgDl%X2B  
int temp; A1r%cs  
for (int i = 0; i < data.length; i++) { %J Jp/I  
int lowIndex = i; `vz7 }TY  
for (int j = data.length - 1; j > i; j--) { g)=$zXWhP  
if (data[j] < data[lowIndex]) { :zY;eJKm  
lowIndex = j; f@[)*([  
} F{^\vFp  
} Y`d@4*FN$  
SortUtil.swap(data,i,lowIndex); '#SZ|Rr6tX  
} ,:2Z6~z{  
} |?nYs>K  
$@O?  
} \;KSx3o  
[ r  
Shell排序: g/}d> 6  
"?<(-,T  
package org.rut.util.algorithm.support; o")"^@Zh i  
h?v8b+:0  
import org.rut.util.algorithm.SortUtil; \GQRpJ#h1  
"a9j2+9  
/** 2vU-9p {  
* @author treeroot Pm%5c\ef  
* @since 2006-2-2 -v-kFzu  
* @version 1.0 ![$`Ivro`  
*/ [+QyKyhTO  
public class ShellSort implements SortUtil.Sort{ QO0@Ax\b  
<-fvYer  
/* (non-Javadoc) BMI`YGjY1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `e fiX^  
*/ %?, 7!|Ls  
public void sort(int[] data) { !#~KSO}zW2  
for(int i=data.length/2;i>2;i/=2){ Uk*(C(  
for(int j=0;j insertSort(data,j,i); k`&FyN^)  
} }V*?~.R  
} #Hz9@H  
insertSort(data,0,1); 'CSjj@3X  
} _iCrQJ0"T  
d2V\T+=  
/** A+GRTwj  
* @param data > ;#Y0  
* @param j b8Z_o N5!  
* @param i S(nQ?;9,  
*/ 63J3NwFt  
private void insertSort(int[] data, int start, int inc) { t- TUP>_  
int temp; R)ZzRz|/  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); mj'N)6ga  
} Pksr9"Ah  
} !L|l(<C  
} e$_gOwB  
+nHr+7}  
} ](v,2(}=  
ah f,- ?S  
快速排序: kZo# Ny  
w\ 0vP  
package org.rut.util.algorithm.support; H }]Zp  
H C,5j)1  
import org.rut.util.algorithm.SortUtil; 1h(IrV5g  
4n@>gW  
/** uD?RL~M  
* @author treeroot \At~94  
* @since 2006-2-2 QV.>Cy  
* @version 1.0 $y,KDR7^  
*/ QH4m7M@ni  
public class QuickSort implements SortUtil.Sort{ n#Dy YVb  
4M>pHz4  
/* (non-Javadoc) X lItg\R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1LSJy*yY  
*/ xb%Q[V_m  
public void sort(int[] data) { 7w" !"W#  
quickSort(data,0,data.length-1); B~k{f}  
} '3U,UD5EG  
private void quickSort(int[] data,int i,int j){ _ Pzgn@D  
int pivotIndex=(i+j)/2; $GU  s\  
file://swap ("PZ!z1m1  
SortUtil.swap(data,pivotIndex,j); JP0a Nu  
R-dv$z0  
int k=partition(data,i-1,j,data[j]); G7|d$!%  
SortUtil.swap(data,k,j); pbDr:kBL  
if((k-i)>1) quickSort(data,i,k-1); rp dv{CUp7  
if((j-k)>1) quickSort(data,k+1,j); rPBsr<k#5  
);AtFP0Y  
} E2dS@!]V  
/** jD"nEp-  
* @param data p7Zeudmj  
* @param i 1%vE7a>{  
* @param j EPLHw  
* @return p/Q< VV  
*/ |v@_~HV  
private int partition(int[] data, int l, int r,int pivot) { B Tj1C  
do{ H_3Wx fO  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); W`JI/  
SortUtil.swap(data,l,r); /DH`7E  
} OmZZTeGg1s  
while(l SortUtil.swap(data,l,r); iG"v  
return l; <dE~z]P  
} 2]Cn<zJ  
x1`(Z|RJ  
} T+~&jC:{  
H1%o)'Kut4  
改进后的快速排序: l{.PyU5)  
Lg,ObVt!  
package org.rut.util.algorithm.support; 0PFC %x  
D4(73  
import org.rut.util.algorithm.SortUtil; #K@!jh)y^  
L gX2KU"  
/** i <gt`UCO  
* @author treeroot a6ryyt 5  
* @since 2006-2-2 `L <sZ;Cj  
* @version 1.0 /6[vF)&  
*/ +h/OQ]`/m  
public class ImprovedQuickSort implements SortUtil.Sort { Ksh[I,+N\  
i( +Uvtgs  
private static int MAX_STACK_SIZE=4096; H|aC(c  
private static int THRESHOLD=10; Gs|a$^V|o  
/* (non-Javadoc) % q!i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]e5aHpgR=  
*/ @oj_E0i3  
public void sort(int[] data) { F?MVQ!K*  
int[] stack=new int[MAX_STACK_SIZE]; %La/E#  
`|"o\Bg<  
int top=-1; z=>PjIW  
int pivot; >k@{NP2b  
int pivotIndex,l,r; r/0 #D+A  
7^Us  
stack[++top]=0; q[vO mes  
stack[++top]=data.length-1; S/y(1.wh  
FMn|cO.vEP  
while(top>0){ d^$cx(2$D  
int j=stack[top--]; hUp3$4w  
int i=stack[top--]; rVsCJuxI  
i@WO>+iB  
pivotIndex=(i+j)/2; $^ir3f+  
pivot=data[pivotIndex]; KYKF$@ <G  
]v@ng8  
SortUtil.swap(data,pivotIndex,j); }3XjP55  
I Gb'ii=A  
file://partition QjJlVlp  
l=i-1; veh=^K%G |  
r=j; xOg|<Nnl  
do{ *kF/yN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i>G:*?a  
SortUtil.swap(data,l,r); ^tm2Duv  
} ;UX9Em  
while(l SortUtil.swap(data,l,r); /i Xl] <  
SortUtil.swap(data,l,j); F$JA IL{W  
I 6<LKI/  
if((l-i)>THRESHOLD){ hZUS#75M5  
stack[++top]=i; jL4"FTcE]3  
stack[++top]=l-1; s:,fXg25J  
} GO][`zZJ]  
if((j-l)>THRESHOLD){ 3)&rj 7  
stack[++top]=l+1; i ^N}avO  
stack[++top]=j; Cx(HsJ! ,  
} {O!;cI~  
r[kHVT8  
} Kb5}M/8  
file://new InsertSort().sort(data); C5Fq%y{$.  
insertSort(data); 1ATH$x  
} e2;=OoBK  
/** l<sWM$ez  
* @param data \B/( H)Cd*  
*/ HQ4WunH2Y  
private void insertSort(int[] data) { rvnm*e,  
int temp; {"|GV~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D,-L!P  
} ;tD?a7  
} EmP2r*"rb  
} }!s$ / Kn  
[ CU8%%7  
} 1_}k)(n  
c No)LF  
归并排序: ,<OS: ]  
Wk-. dJ  
package org.rut.util.algorithm.support; FuBUg _h  
m]=G73jzO  
import org.rut.util.algorithm.SortUtil; .:;q8FL/  
!a'{gw  
/** \4*i;a.kU  
* @author treeroot ke +\Z>BWN  
* @since 2006-2-2 K~5(j{Kb8  
* @version 1.0 ,0>_(5  
*/ X)[QEq^  
public class MergeSort implements SortUtil.Sort{ L`^ v"W()  
\jkDRR[  
/* (non-Javadoc) F 'HYWH0?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :NH '>'  
*/ ^'sOWIzeiY  
public void sort(int[] data) { &j{I G`Trl  
int[] temp=new int[data.length]; 'xM\txZ;  
mergeSort(data,temp,0,data.length-1); f%YD+Dt_V  
} <lPHeO<^]  
)=,;-&AR  
private void mergeSort(int[] data,int[] temp,int l,int r){ +#'QP#  
int mid=(l+r)/2; Xd~lifF  
if(l==r) return ; 2b#> ~  
mergeSort(data,temp,l,mid); zq#gf  
mergeSort(data,temp,mid+1,r); ooYs0/,{  
for(int i=l;i<=r;i++){ *nUa0Zg4q6  
temp=data; jN7Z} 1`  
} R ta_\Aj!  
int i1=l; 9'p pb  
int i2=mid+1; IifH=%2Y  
for(int cur=l;cur<=r;cur++){ Qm?o^%a  
if(i1==mid+1) } /Iw]!lK2  
data[cur]=temp[i2++]; &gm/@_  
else if(i2>r) o`ODz[04  
data[cur]=temp[i1++]; bqR0./V  
else if(temp[i1] data[cur]=temp[i1++]; y=}a55:qE  
else ue}lAW{q  
data[cur]=temp[i2++]; jin?;v  
} r3Ih]|FK#  
} D4GXZX8 K  
D2#.qoP #  
} :4238J8  
."v&?o Ck]  
改进后的归并排序: ou&7v<)x4  
nZS*"O#L  
package org.rut.util.algorithm.support; gi\UNT9x  
K9'AYFse  
import org.rut.util.algorithm.SortUtil; hN:2(x  
FkoN+\d  
/** v|>'m#Ln2  
* @author treeroot jZ69sDhE  
* @since 2006-2-2 qjvIp-  
* @version 1.0 B;L^!sLP  
*/ 2) A$bx  
public class ImprovedMergeSort implements SortUtil.Sort { H*dQT y,  
/#?i+z   
private static final int THRESHOLD = 10; \V<deMb=  
NslaG  
/* \3z^/F~  
* (non-Javadoc) Hn(L0#Oqy  
* }*0*8~Q'5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yr+ghl/ V  
*/ "[ ]72PC  
public void sort(int[] data) { af7\2 g3*  
int[] temp=new int[data.length]; ~E7=c3:"  
mergeSort(data,temp,0,data.length-1); >E(IkpZ  
} *W<g%j-a  
D'Sdz\:4  
private void mergeSort(int[] data, int[] temp, int l, int r) { .gHL(*1P  
int i, j, k; ;0\  
int mid = (l + r) / 2; j2{ '!  
if (l == r) v~HfA)#JK  
return; -U_<:  
if ((mid - l) >= THRESHOLD) YJrZ  
mergeSort(data, temp, l, mid); X?.LA7)CK  
else FY]z*=  
insertSort(data, l, mid - l + 1); 30/(  
if ((r - mid) > THRESHOLD) %"RgW\s[R  
mergeSort(data, temp, mid + 1, r); ma26|N5  
else ag$UNV  
insertSort(data, mid + 1, r - mid); lV!@h}mG  
+2]{% =  
for (i = l; i <= mid; i++) { w-MnJ(r  
temp = data; %!1:BQ,p,i  
} +EgQj*F*  
for (j = 1; j <= r - mid; j++) { !~k-S exh  
temp[r - j + 1] = data[j + mid]; niN$!k+Jr  
} )Ikx0vDFQ  
int a = temp[l]; ^?tF'l`  
int b = temp[r]; >?A3;O]  
for (i = l, j = r, k = l; k <= r; k++) { Lv ,Ls  
if (a < b) { (@?PN+68|  
data[k] = temp[i++]; N;\by<snN  
a = temp; @7';bfsix  
} else { fM)RO7  
data[k] = temp[j--]; u_U51C\rb  
b = temp[j]; j^Z3  
} $ p{Q]|ww  
} /CN^">|_  
} cB7=4:U  
yf7p0;$?  
/** N8l(m5Kk,k  
* @param data ';!02=-@  
* @param l 5 lC"10  
* @param i GVp2| \-L  
*/ t=ry\h{Pc  
private void insertSort(int[] data, int start, int len) { < F Cr L  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O<h`[1eUjS  
} ;dYpdy  
}  p68) 0  
} n2H2G_-L[  
} %8+'L4  
+x0-hRD  
堆排序: ]E)gMf   
2FS,B\d  
package org.rut.util.algorithm.support; a8%/Xwr~  
N*My2t_+E  
import org.rut.util.algorithm.SortUtil; ~z!U/QR2  
N LC}XL  
/** E$rn^keM  
* @author treeroot >g6:{-b^a  
* @since 2006-2-2 @4b"0ne}h  
* @version 1.0 .yF7{/  
*/ #.%;U' #O  
public class HeapSort implements SortUtil.Sort{ i5*sG^<$H  
@hWt.qO3s  
/* (non-Javadoc) {j E}mzi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B;':Eaa@  
*/ R '/Ilz`  
public void sort(int[] data) { E7axINca  
MaxHeap h=new MaxHeap(); ]ba O{pJi  
h.init(data); W%.Kr-[?`o  
for(int i=0;i h.remove(); ^r$P&}Z\b  
System.arraycopy(h.queue,1,data,0,data.length); mi3yiR  
} ;^FV  
pUr.<yc&u  
private static class MaxHeap{ TP oP%Yj"  
70m}+R(`  
void init(int[] data){ F,`y_71<  
this.queue=new int[data.length+1]; qgU$0enSs  
for(int i=0;i queue[++size]=data; BaTE59W  
fixUp(size); 3%xj-7z W  
} SVaC)O(  
} z&d&Ky  
V4Ql6vg_f  
private int size=0; H5=-b@(  
q=E<y  
private int[] queue; jO$3>q  
Xi1/wbC  
public int get() { WrL&$dEJ?M  
return queue[1]; U)+Yh  
} }} l04kN_  
fXBA P10#  
public void remove() { O6;7'  
SortUtil.swap(queue,1,size--); 7WW@%4(  
fixDown(1); ~FM5]<X)  
} 4S@^ym  
file://fixdown X%S?o  
private void fixDown(int k) { pNI=HHx  
int j; pVP CxP  
while ((j = k << 1) <= size) { a! P?RbW  
if (j < size %26amp;%26amp; queue[j] j++; N/mTG2'<  
if (queue[k]>queue[j]) file://不用交换 C jsy1gA  
break; 50Co/-)j  
SortUtil.swap(queue,j,k); $ T.c>13  
k = j; V\WqA8  
} 6<R!`N 6  
} ]7-*1kL8=~  
private void fixUp(int k) { ^6|Q$]}Ok  
while (k > 1) { =ex71qj)  
int j = k >> 1; NS;,(v{*N  
if (queue[j]>queue[k]) Ylll4w62N  
break; BYrj#n5  
SortUtil.swap(queue,j,k); y}5H<ZcXA  
k = j; < ppg$;  
} >c?Z.of  
} +EJIYvkFm  
y'pAhdF  
} kl_JJX6jPP  
DnP>ed"M!  
} a&p|>,WS  
j}'spKxu  
SortUtil: 5EIh5Y EU>  
^c!"*L0E  
package org.rut.util.algorithm; (5re'Pl  
pog*}@ OS  
import org.rut.util.algorithm.support.BubbleSort; KE`}P<K&  
import org.rut.util.algorithm.support.HeapSort; KZ pqbI Z  
import org.rut.util.algorithm.support.ImprovedMergeSort; Uoh!1_oV  
import org.rut.util.algorithm.support.ImprovedQuickSort; kb ]PW Oz  
import org.rut.util.algorithm.support.InsertSort; Y'`w.+9  
import org.rut.util.algorithm.support.MergeSort; CYmwT>P+*4  
import org.rut.util.algorithm.support.QuickSort; B_anO{3$4  
import org.rut.util.algorithm.support.SelectionSort; &%}6&PW i  
import org.rut.util.algorithm.support.ShellSort; iZB?5|*  
S v$%-x^t  
/** *f=H#  
* @author treeroot znzh$9tH  
* @since 2006-2-2 @S yGj#  
* @version 1.0 OW\r }  
*/ gh|TlvnA  
public class SortUtil { 3G dWq*  
public final static int INSERT = 1; WrQe'ny  
public final static int BUBBLE = 2; fa;\4#  
public final static int SELECTION = 3; t{| KL<d]  
public final static int SHELL = 4; u1xCn\  
public final static int QUICK = 5; nc!P !M  
public final static int IMPROVED_QUICK = 6; /mX/ "~  
public final static int MERGE = 7; _$]3&P  
public final static int IMPROVED_MERGE = 8; +6-c<m|  
public final static int HEAP = 9; Fx*iAH\e  
H[UV]qO,  
public static void sort(int[] data) { -uXf?sTV  
sort(data, IMPROVED_QUICK); D.9qxM"Z>  
} W~z 2Q so  
private static String[] name={ +hI:5(_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Va"Q1 *"  
}; 9aFu51  
+] >o@  
private static Sort[] impl=new Sort[]{ 8e:J{EG~  
new InsertSort(), `h}fS4CO  
new BubbleSort(), 9q5jqFQ  
new SelectionSort(), _SC{nZ[  
new ShellSort(), )HQ':ZE$  
new QuickSort(), -'r4@='6}  
new ImprovedQuickSort(), :3J, t//c  
new MergeSort(), ZgK[,<2  
new ImprovedMergeSort(), xr}3vJ7  
new HeapSort() ?zGx]?1P1<  
}; dE~]%fUFy-  
mZQW>A]iE  
public static String toString(int algorithm){ ,c<&)6FU]  
return name[algorithm-1]; #$2 {l,>  
} >7i&(6L  
$ (/=Wn  
public static void sort(int[] data, int algorithm) { _GS_R%b  
impl[algorithm-1].sort(data); +e}v) N  
} 7yM=$"'d  
~(OG3`W!  
public static interface Sort { {Z0(V"Q  
public void sort(int[] data); #d2XVpO[0  
} Is1P,`*!  
^)oBa=jL4  
public static void swap(int[] data, int i, int j) { viB'ul7o  
int temp = data; A?i ~*#wE  
data = data[j]; Wu3or"lcw*  
data[j] = temp; *:S_v.Y3"  
} $p:RnH\H1  
} vy&'A$ H  
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