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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。 @.;] $N&J  
插入排序: (lq7 ct  
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package org.rut.util.algorithm.support; zZ &L#  
D1o<:jOj  
import org.rut.util.algorithm.SortUtil; k #y4pF_  
/** ;UTT>j  
* @author treeroot  17AJT  
* @since 2006-2-2 Dj}n!M`2I  
* @version 1.0 .[%em9u  
*/ 8\+kfK  
public class InsertSort implements SortUtil.Sort{ D 's'LspQ  
{ </MC`  
/* (non-Javadoc) 4bLk+EY4A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SIv8EMGo  
*/ "jqC3$DKI  
public void sort(int[] data) { >Ig%|4Hw  
int temp; LW<DhMV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7 ^7Rk  
} g+;)?N*j  
} ,#3u. =IR[  
} {WQH  
P0NGjS|Z{  
} Oa~|a7`o  
F(c~D0  
冒泡排序: ~V&4<=r`  
gpW3zDJ  
package org.rut.util.algorithm.support; JRt^YX  
v-M3/*  
import org.rut.util.algorithm.SortUtil; bfy `UZr  
6X2>zUHR  
/** gDE',)3Q,  
* @author treeroot _Mq0QQ42  
* @since 2006-2-2 W`_pjld  
* @version 1.0 vH/ z|<  
*/ :9un6A9JS  
public class BubbleSort implements SortUtil.Sort{ Y [Jt+p]  
UmYReF<<_  
/* (non-Javadoc) :+,>0%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0vOt. LC/S  
*/ -6a4H?L  
public void sort(int[] data) { b* Ny  
int temp;  $0>>Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ GWo^hIfJ  
if(data[j] SortUtil.swap(data,j,j-1); iJ.P&T9  
} `X[L62D  
} m8'B7|s  
} n!=%MgF'*p  
} PhF.\W b  
c&r8q]u  
} 1-[~}  
gM_z`H 5[!  
选择排序: R\k= CoJJ  
pwo5Ij,~q  
package org.rut.util.algorithm.support; ?&#z3c$}  
-;pZC}Nd3  
import org.rut.util.algorithm.SortUtil; ,,1H#;j  
)D\cm7WX^[  
/** EOJk7  
* @author treeroot (O{5L(  
* @since 2006-2-2 <Y~?G:v6+  
* @version 1.0 4a3Xz,[(a  
*/ v,t;!u,40  
public class SelectionSort implements SortUtil.Sort { &2IrST{d:V  
/N6sH!w  
/* 1,@-y#V_  
* (non-Javadoc) @8WG  
* i(DoAfYf/q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <cu? g  
*/ Q79& Q04XN  
public void sort(int[] data) { Z* eb  
int temp; 5sJi- ^  
for (int i = 0; i < data.length; i++) { Pw:(X0@  
int lowIndex = i; Hik8u!#P  
for (int j = data.length - 1; j > i; j--) { <[{Ty+  
if (data[j] < data[lowIndex]) { BG:l Zj'I  
lowIndex = j; 6&/H XqP  
} p ;E zmz  
} v~^c-]4I  
SortUtil.swap(data,i,lowIndex); ?^]29p_  
} &atT7m  
} hnWo.5;$  
7tWt3  
} mD }&X7  
9F+i+(\,b  
Shell排序: P|}~=2J  
2>~{.4PI  
package org.rut.util.algorithm.support; = 7U^pT  
w?_y;&sbR  
import org.rut.util.algorithm.SortUtil; tY$ .(2Ua  
"0x"X w#I  
/** 9_Tk8L#  
* @author treeroot `:WVp~fn  
* @since 2006-2-2 n{vp&  
* @version 1.0 xb#M{EE-.  
*/ 48X;'b,h  
public class ShellSort implements SortUtil.Sort{ q~*3Bk~  
Mf0!-bu  
/* (non-Javadoc) H':dLR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .5=Qf vi*  
*/ (?MRbX]@  
public void sort(int[] data) { BM bT:)%  
for(int i=data.length/2;i>2;i/=2){ dhl[JC~ _  
for(int j=0;j insertSort(data,j,i); 4k'2FkDA  
} hgCF!eud  
} tBEZ4 W>67  
insertSort(data,0,1); zrfE'C8O  
} ' k~'aZ  
0{|ib !  
/** ?^iX%   
* @param data Jej P91  
* @param j 5`mRrEA  
* @param i z_fR?~$N2  
*/ ,a_F[uK  
private void insertSort(int[] data, int start, int inc) { &W/C2cpmR  
int temp; =XWew*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4u5^I;4pL  
} :ie7HF  
} CD#:*  
} Y9F78=Q  
9( ;lcOz  
} a<+Qw'  
$<^4G  
快速排序: ]'Y vI! r  
0gNwC~IA8  
package org.rut.util.algorithm.support; I}oxwc  
[\N,ow,n  
import org.rut.util.algorithm.SortUtil; b 62 o  
.<JD'%?"  
/** j^A0[:2  
* @author treeroot gE8=#%1<  
* @since 2006-2-2 S-[]z*  
* @version 1.0 w <zO  
*/ x7$U  
public class QuickSort implements SortUtil.Sort{ $q#|B3N%  
v8! 1"FYL  
/* (non-Javadoc) X$,#OR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2YvhzL[um  
*/ 7aTo! T  
public void sort(int[] data) { 9k.LV/Y  
quickSort(data,0,data.length-1); 9:0JWW^so  
} Alh"G6  
private void quickSort(int[] data,int i,int j){ `X?l`H;#  
int pivotIndex=(i+j)/2; %XGwQB$zk8  
file://swap IQ$l!)  
SortUtil.swap(data,pivotIndex,j); Nx4_Oc^hY  
PN0l#[{EN  
int k=partition(data,i-1,j,data[j]); N*JWd  
SortUtil.swap(data,k,j); WE$Pi;q1  
if((k-i)>1) quickSort(data,i,k-1); w?kdM1T  
if((j-k)>1) quickSort(data,k+1,j); Zcd!y9]#  
31mY]Jve"  
} pE >~F  
/** e#`wshtN:  
* @param data T 1m097  
* @param i !Dp4uE:Pq  
* @param j YIs(Q  
* @return Qg  
*/ btb-MSkO  
private int partition(int[] data, int l, int r,int pivot) { Qz&I~7aoyV  
do{ ;;BQuG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xy`aR< L  
SortUtil.swap(data,l,r); C/dqCUX:  
} bG nBV7b  
while(l SortUtil.swap(data,l,r); =g' 7 xA  
return l; Mj5=t:MI  
} *ie#9jA  
m;o \.s  
} $oK,&_  
.(Q3M0.D  
改进后的快速排序: mJb>)bO l  
"PGEiLY  
package org.rut.util.algorithm.support; ==I:>+_ ^|  
_5#f9,m1  
import org.rut.util.algorithm.SortUtil; #9z\Wblr  
ry}CND(nB  
/** V ea>T^  
* @author treeroot  !pl<  
* @since 2006-2-2 *{:FPmDU  
* @version 1.0 xin<.)!E  
*/ (A`/3Aq+  
public class ImprovedQuickSort implements SortUtil.Sort { 4A0R07"  
e#L/  
private static int MAX_STACK_SIZE=4096; 7dI+aJ  
private static int THRESHOLD=10; y|V/xm+Fp  
/* (non-Javadoc) 0[}"b(O{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l i}4d+  
*/ 7QL>f5Q  
public void sort(int[] data) { kV"';a  
int[] stack=new int[MAX_STACK_SIZE]; ch,<4E/c[R  
c:"*MM RC  
int top=-1; l){l*~5zl2  
int pivot; 7~TE=t  
int pivotIndex,l,r; mJ0nyjX^  
?1}1uJMj-  
stack[++top]=0; j['Z|Am"l  
stack[++top]=data.length-1; pgT{#[=>  
&!J X  
while(top>0){ {6'5K U*RH  
int j=stack[top--]; Y cE:KRy  
int i=stack[top--]; X4*{CM  
7 }(LO^,A  
pivotIndex=(i+j)/2; > taT;[Oa  
pivot=data[pivotIndex]; Z 2Fm=88  
4%2QF F @  
SortUtil.swap(data,pivotIndex,j); (.7_`T6QG  
rs2~spN;h  
file://partition %stZ'IX  
l=i-1; a?E]-Zf  
r=j; VztalwI  
do{ 6N\~0d>5m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L <]j&  
SortUtil.swap(data,l,r); *\m 53mb  
} AS`0.RC-  
while(l SortUtil.swap(data,l,r); Hk8:7"4Q  
SortUtil.swap(data,l,j); NZYtA7  
<I'kJ{"  
if((l-i)>THRESHOLD){ MGX %U6  
stack[++top]=i; 9 a2Ga   
stack[++top]=l-1; N8 }R<3/  
} fHYEK~!C04  
if((j-l)>THRESHOLD){ K,%H*1YKK  
stack[++top]=l+1; IJO`"da  
stack[++top]=j; vp &jSfQ^  
} |332G64K  
]"q[hF*PM  
} t`+x5*g W  
file://new InsertSort().sort(data); gE(QVbh(  
insertSort(data); 2#C!40j&\  
} UZMo(rG.]{  
/** d6,%P 6  
* @param data ja70w:ja  
*/ MX6*waQ-<  
private void insertSort(int[] data) { J7t5 B}}  
int temp; ?mS798=f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4JFi|oK0H  
} Xj"/6|X  
} fG;)wQJ  
} o %A4wEye  
L7_Mg{  
} U2/H,D  
5.F.mUO  
归并排序: @no]*?Gpa  
%m!o#y(hD`  
package org.rut.util.algorithm.support; (qlI QC  
Q[scmP^$^  
import org.rut.util.algorithm.SortUtil; Df02#493  
4?g~GI3  
/** z|F>+6l"Y7  
* @author treeroot tc\LK_@$/F  
* @since 2006-2-2 EonZvT-D=  
* @version 1.0 FIlw  
*/ Fp+^`;j  
public class MergeSort implements SortUtil.Sort{ +cM;d4  
&1893#V  
/* (non-Javadoc) D4G*K*z,w4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [yL %+I  
*/ <%<}];bmFL  
public void sort(int[] data) { I(P|`"  
int[] temp=new int[data.length]; lYv :  
mergeSort(data,temp,0,data.length-1); m7z/@b[  
} IK(G%dDw  
>BMJA:j  
private void mergeSort(int[] data,int[] temp,int l,int r){ &5Ea6j  
int mid=(l+r)/2; cQzd0X  
if(l==r) return ; 9c9-1iS  
mergeSort(data,temp,l,mid); vLD Ma>  
mergeSort(data,temp,mid+1,r); 2V/ A%  
for(int i=l;i<=r;i++){ @5\OM#WT~&  
temp=data; >k*QkIyq  
} |^C?~g  
int i1=l; M:6H%6eT  
int i2=mid+1; "w= p@/C  
for(int cur=l;cur<=r;cur++){ >pO[ S[  
if(i1==mid+1) j\q1b:pE  
data[cur]=temp[i2++]; _a8^AG  
else if(i2>r) EK_NN<So#  
data[cur]=temp[i1++]; TgJx%  
else if(temp[i1] data[cur]=temp[i1++]; 1%^U=[#2`  
else o DPs xw  
data[cur]=temp[i2++]; X&MO}  
} Lg|j0-"N  
} `x~k}  
p*_g0_^  
} HGfYL')Z  
MG[?C2KA/  
改进后的归并排序: z 4Qz9#*"^  
B{H;3{0  
package org.rut.util.algorithm.support; Df||#u=n  
E0\ '  
import org.rut.util.algorithm.SortUtil; qc|;qPj   
`5<  
/** UY*Hc  
* @author treeroot y7wy9+>l  
* @since 2006-2-2 i|Lir{vW  
* @version 1.0 rl'YyO}2  
*/ :IV4]`  
public class ImprovedMergeSort implements SortUtil.Sort { e%`gD*8  
VvSD &r^qI  
private static final int THRESHOLD = 10; KArf:d  
yx3M0Qo  
/* )J<Li!3  
* (non-Javadoc) "'94E,W  
* aWm0*W"(@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .^I,C!O#  
*/ u]@``Zb|  
public void sort(int[] data) { JMuUj_^}7  
int[] temp=new int[data.length]; /XEcA 5C<  
mergeSort(data,temp,0,data.length-1); eg~$WB;1  
} vlw2dY@^  
Ooc,R(  
private void mergeSort(int[] data, int[] temp, int l, int r) { Zla5$GM  
int i, j, k; i cQsA  
int mid = (l + r) / 2; p+snBaAo}  
if (l == r) J;+tQ8,AP  
return; =R:3J"ly0  
if ((mid - l) >= THRESHOLD) '1~mnmiP  
mergeSort(data, temp, l, mid); P-K\)65{Y  
else !O@qqg(>  
insertSort(data, l, mid - l + 1); yrR<F5xge  
if ((r - mid) > THRESHOLD) RQ y|W}d_  
mergeSort(data, temp, mid + 1, r); ?CAP8_  
else SLSJn))@!  
insertSort(data, mid + 1, r - mid); #E5Sc\,  
x@m"[u  
for (i = l; i <= mid; i++) { ;Y?7|G97*S  
temp = data; {(o\G"\<XY  
} R)WvU4+U  
for (j = 1; j <= r - mid; j++) { Dgj`_yd  
temp[r - j + 1] = data[j + mid]; }%| (G[  
} yb*SD!  
int a = temp[l]; 7 '2E-#^  
int b = temp[r]; 0h^upB#p  
for (i = l, j = r, k = l; k <= r; k++) { w?Nvm?_]  
if (a < b) { qXt2m  
data[k] = temp[i++]; cm%QV?  
a = temp; Q {3"&  
} else { @'?<9 2A  
data[k] = temp[j--]; +NxEx/{  
b = temp[j]; ?%{bMqYJD{  
} igOjlg_Q  
} L=Dd`  
} 5Jp@n .  
28d:  
/** .oO_x>  
* @param data =9i:R!,W  
* @param l x/~V ZO  
* @param i 1oFU4+{ 4  
*/ #PVgx9T=_  
private void insertSort(int[] data, int start, int len) { IJD'0/R'c  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Axk p  
} nrUrMnlg  
} 9^4^EY#  
} Sl:Qq!  
} N1\u~%AT"  
\x(J v Dt  
堆排序: d5T0#ue/e  
|ZJ]`qmZ  
package org.rut.util.algorithm.support; @8DB Ln w  
4Mi*bN,  
import org.rut.util.algorithm.SortUtil; #h /-  
Rr^<Q:#"<|  
/** r}WV"/]p  
* @author treeroot 8niQG']  
* @since 2006-2-2 }z,4IHNn  
* @version 1.0 B:n9*<v(  
*/ Wgq*|teW  
public class HeapSort implements SortUtil.Sort{ "}\z7^.W>  
-[~{c]/c  
/* (non-Javadoc) pA!+;Y!ZB<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |5F]y"Nb  
*/  []1VD#  
public void sort(int[] data) { RA+Y./*h  
MaxHeap h=new MaxHeap(); / ]>&OSV  
h.init(data); hnvn&{|  
for(int i=0;i h.remove(); ]QtdT8~  
System.arraycopy(h.queue,1,data,0,data.length); 5[al^'y  
} x|U]x  
ti`z:8n7  
private static class MaxHeap{ m589C+7  
/!eC;qp;[  
void init(int[] data){ {3$ge  
this.queue=new int[data.length+1]; C&NoEtL>s  
for(int i=0;i queue[++size]=data; 59$mfW o>  
fixUp(size); R{8nR0 0|1  
} 3`n5[RV  
} 3+{hO@ O  
}Da8S|)H  
private int size=0; 9gn_\!Mp  
CYEqH2"3  
private int[] queue; UQPd@IVu6  
aP cO9  
public int get() { $$A{|4,aI  
return queue[1]; rP2^D[uM.  
} MGX,JW>L  
(+@3Dr5o0}  
public void remove() { UrH^T;#  
SortUtil.swap(queue,1,size--); *B)>5r  
fixDown(1); &%f y  
} g5V9fnb!d  
file://fixdown ;g^QH r  
private void fixDown(int k) { ?.v!RdM+  
int j; S%Pk@n`z]  
while ((j = k << 1) <= size) { 6%U1%;  
if (j < size %26amp;%26amp; queue[j] j++; Gw~^6(Qu  
if (queue[k]>queue[j]) file://不用交换 J^ P/2a#a  
break; cP$b>3O  
SortUtil.swap(queue,j,k); >`5iq.v  
k = j; n2Dnpe:  
} =XQ3sk6U  
} 8$v17 3  
private void fixUp(int k) { F!|Z_6\tv:  
while (k > 1) { AjAmV hq  
int j = k >> 1; zST# X}  
if (queue[j]>queue[k]) &ad9VB7  
break; me1ac\  
SortUtil.swap(queue,j,k); p % 3B^  
k = j; %ghQ#dZ]&  
} ^5 F-7R8Q  
} <H}"xp)j0  
nl*{@R.q @  
} #n{wK+lz  
_AI2\e  
} 7Q 0 M3m  
{8@?9Z9R{  
SortUtil: .Z8 x!!Q*  
udp&U+L  
package org.rut.util.algorithm; un W{ZfEC  
3hO` GM  
import org.rut.util.algorithm.support.BubbleSort; @]H&(bw  
import org.rut.util.algorithm.support.HeapSort; a}M7"v9  
import org.rut.util.algorithm.support.ImprovedMergeSort; bk2 HAG  
import org.rut.util.algorithm.support.ImprovedQuickSort; GQ2&D}zh  
import org.rut.util.algorithm.support.InsertSort; Ea!}r| ~]0  
import org.rut.util.algorithm.support.MergeSort; #8;^ys1f  
import org.rut.util.algorithm.support.QuickSort; tI*u"%#t  
import org.rut.util.algorithm.support.SelectionSort; >|6[uKrO  
import org.rut.util.algorithm.support.ShellSort; +]I;C  
ujmW {()  
/** ^zs CF0  
* @author treeroot `r_qvrC  
* @since 2006-2-2 wh|[ "U('  
* @version 1.0 C0i:*1  
*/ S &s7]  
public class SortUtil { lH:TE=|4  
public final static int INSERT = 1; Z:O24{ro5  
public final static int BUBBLE = 2; BB--UM{7  
public final static int SELECTION = 3; %lv2;-  
public final static int SHELL = 4; 6}C4 SZ  
public final static int QUICK = 5; U+@yx>!  
public final static int IMPROVED_QUICK = 6; 8Dhq_R'r  
public final static int MERGE = 7; eJ'2 CM6  
public final static int IMPROVED_MERGE = 8; Jc`LUJT  
public final static int HEAP = 9; Ip.5I!h[Xb  
7Ar4:iNvX  
public static void sort(int[] data) { *: e^yi  
sort(data, IMPROVED_QUICK); |oSyyDYWP  
} eK/[jxNO  
private static String[] name={ U QXT&w  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .X_k[l9  
}; .g(yTA  
bxkp9o  
private static Sort[] impl=new Sort[]{ FxM`$n~K  
new InsertSort(), HY5g>wv@  
new BubbleSort(), (}4tj4d  
new SelectionSort(), \dIIZSN  
new ShellSort(), @,M!&l  
new QuickSort(), P8DJv-f`  
new ImprovedQuickSort(), {* >$aI  
new MergeSort(), ^5=}Y>EJO  
new ImprovedMergeSort(), 0J@)?,V-.  
new HeapSort() k W/3 Aq7r  
}; ORcl=Eo>  
tq<7BO<6  
public static String toString(int algorithm){ W>wE8? _,  
return name[algorithm-1]; ?h1]s&^| 2  
} hP3I_I[qF}  
5{,/m"-  
public static void sort(int[] data, int algorithm) { UgSSZ05Lq  
impl[algorithm-1].sort(data); W qci51y>#  
} )P:TVe9`  
u6t.$a!5  
public static interface Sort { pL-p  
public void sort(int[] data); xzW]D0o0  
} B wtD!de$  
COJqVC(#  
public static void swap(int[] data, int i, int j) { -HZvz[u  
int temp = data; O:xRUjpL  
data = data[j]; HxU.kcf  
data[j] = temp; sb4r\[?  
} !rTh+F*  
}  $Jb+}mlT  
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