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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。 7:jSP$  
插入排序: nUd(@@%m  
l*B;/ >nR  
package org.rut.util.algorithm.support; CSt6}_c!  
1V FAfv%}  
import org.rut.util.algorithm.SortUtil; m4>v S  
/** +&(sZFW5o  
* @author treeroot '9{H(DA  
* @since 2006-2-2 I/XVo2Ee  
* @version 1.0 G1$DV Go  
*/ ZZ[5Z =te?  
public class InsertSort implements SortUtil.Sort{ <%qbU-  
9#O"^.Z !  
/* (non-Javadoc) "%,zB_ng\<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b:Rl }"a  
*/ %#/7Tl:  
public void sort(int[] data) { nzhQ\'TC  
int temp; rf1-E57#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i]8zZRe  
} yK{;72  
} p1J%=  
} J[VQ6fD%  
|\~cjPX(  
} gbXzD`WQ  
w`F}3zm  
冒泡排序: top3o{ 4  
8Ln:y'K  
package org.rut.util.algorithm.support; MbY a6jrF  
iOj mj0  
import org.rut.util.algorithm.SortUtil; 5OpK~f5  
Zt[ P kBi  
/** (VC{#^2l  
* @author treeroot 1G{$ B^ f  
* @since 2006-2-2 j%[|XfM  
* @version 1.0 QL_bg:hs  
*/ i` Lt=)@&  
public class BubbleSort implements SortUtil.Sort{ AHn^^'&x[  
Q? W]g%:)  
/* (non-Javadoc) ={#r/x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7F)HAbIS  
*/ owmA]f  
public void sort(int[] data) { l~F,i n.  
int temp; 0fi+tc 30  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !. q*bY  
if(data[j] SortUtil.swap(data,j,j-1); s7a\L=#p(  
} DX4 95<6*  
} = 1`  
} k9yA#  
} O?8G  
}{j[  
} 47ir QK*  
eR8h4M~O  
选择排序: k\HRG@ /G  
ec"L*l"  
package org.rut.util.algorithm.support; vERsrg;(  
N-_2d*l3  
import org.rut.util.algorithm.SortUtil; ymr-kB  
G78rpp  
/** b4oZ@gVR;  
* @author treeroot F =d L#@^  
* @since 2006-2-2 X1tAV>k5'L  
* @version 1.0 U{i9h6b"18  
*/ {U-VInu  
public class SelectionSort implements SortUtil.Sort { WlWBYnphZs  
l$zo3[  
/* LR-op?W  
* (non-Javadoc) LL kAA?P  
* B1*%pjy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x<9|t(  
*/ a&PoUwG  
public void sort(int[] data) { (Ozb+W?  
int temp; TtkB  
for (int i = 0; i < data.length; i++) { E$smr\  
int lowIndex = i; O yj!N`&z@  
for (int j = data.length - 1; j > i; j--) { 2\EMtR>.M'  
if (data[j] < data[lowIndex]) { |iO2,99i  
lowIndex = j; 8M(N   
} 0~an\4nh  
} gt}/C4|  
SortUtil.swap(data,i,lowIndex); N @]*E  
} lyv9eM  
} 1)%9h>F7  
?$=N!>P#  
} )M'#l<9B  
}{]{`\  
Shell排序: $zxCv7  
U/0NN>V  
package org.rut.util.algorithm.support; Wm Od1  
|D`Zi>lv  
import org.rut.util.algorithm.SortUtil; y5+-_x,  
Ww)qBsi8  
/** QJGRi  
* @author treeroot SGjaH 8z  
* @since 2006-2-2 i"sVk8+o!  
* @version 1.0 C.pNDpx-  
*/ "6Ly?'H K  
public class ShellSort implements SortUtil.Sort{ \*d@_oQ$  
}JrM!'  
/* (non-Javadoc) BD,~M*%z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {7B$%G'  
*/ OO53U=NU  
public void sort(int[] data) { gt{ei)2b  
for(int i=data.length/2;i>2;i/=2){ TZ-n)rC)v  
for(int j=0;j insertSort(data,j,i); tEBf2|<  
} ]'2p"A0U  
} .+{nfmc,c  
insertSort(data,0,1); !Bu<6  
} |wVoJO!O}  
UI>-5,X  
/** %oC]Rpdu  
* @param data \=,+weGw@  
* @param j B^{bXhDp  
* @param i v|QFUa`  
*/ kwZC 3p\\  
private void insertSort(int[] data, int start, int inc) { _xUiHX<  
int temp; Njz,y}\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Oh<Z0M)  
} v8-F;>H  
} '<6Gz7O  
} '2:Ily,S@  
^'v6 ,*:4  
} YgdoQBQ  
j!m~ :D  
快速排序: wF3mQ_hv:@  
v%86JUlK.  
package org.rut.util.algorithm.support; +z("'Cv  
P,D >gxl  
import org.rut.util.algorithm.SortUtil; r`wL_>"{n  
5\EHu8  
/** Y6^lKw  
* @author treeroot (WN'wp  
* @since 2006-2-2 #@lr$^M  
* @version 1.0 -v>BeVF  
*/ cGOE$nL  
public class QuickSort implements SortUtil.Sort{ <Hm:#<\  
?CL1^N%  
/* (non-Javadoc) Jg;Hg[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i!YZF$|  
*/ +zz9u?2C`  
public void sort(int[] data) { R0*DfJS:Z  
quickSort(data,0,data.length-1); uTB; Bva  
} @RbAC*Y]g  
private void quickSort(int[] data,int i,int j){ &v3r#$Hj[  
int pivotIndex=(i+j)/2; 988aF/c  
file://swap `d3S0N6@  
SortUtil.swap(data,pivotIndex,j); ((;9%F:/$  
--",}%-  
int k=partition(data,i-1,j,data[j]); CcAsJX~_  
SortUtil.swap(data,k,j); gjyg`%  
if((k-i)>1) quickSort(data,i,k-1); ]WyV~Dzz<  
if((j-k)>1) quickSort(data,k+1,j); b^hCm`2w*  
.F)--%  
} ?vf\_R'M  
/** G9Azd^3  
* @param data 8*6J\FE<p  
* @param i ;$[o7Qm5r  
* @param j VJHHC.Kz  
* @return 7b@EvW6X}  
*/ 3S'V>:  
private int partition(int[] data, int l, int r,int pivot) { R%3H"FU9w  
do{ [h8F)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); vlzjALy  
SortUtil.swap(data,l,r); De:w(Rm  
} pMa 3R3a  
while(l SortUtil.swap(data,l,r); T7cT4PAW  
return l; \mWXr*;  
} B;W=61d  
e/@udau  
} Yn1U@!  
\EB]J\ x<  
改进后的快速排序: h`3;^T  
)-9|3`  
package org.rut.util.algorithm.support;  s.GTY@t  
 w8FZXL  
import org.rut.util.algorithm.SortUtil; HzbO#)Id-I  
C. 8>  
/** Ds L]o  
* @author treeroot v6f$N+4c  
* @since 2006-2-2 iF61J% 3-  
* @version 1.0 pklcRrx,a  
*/ )S8q.h  
public class ImprovedQuickSort implements SortUtil.Sort { Nmi#$K[x  
}1;Ie0l=_e  
private static int MAX_STACK_SIZE=4096; 1`2lTkg  
private static int THRESHOLD=10; hn!$?Vo.  
/* (non-Javadoc) 5:n&G[Md  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sPc\xY  
*/ y7,~7f!N2  
public void sort(int[] data) { >]C;sP  
int[] stack=new int[MAX_STACK_SIZE]; u$<FKp;I  
@@ ZcW<Y"  
int top=-1; z{!wQ~ j  
int pivot;  tEP^w  
int pivotIndex,l,r; Kau*e8  
{6/%w,{,  
stack[++top]=0; /xsa-F  
stack[++top]=data.length-1; a[9;Okm #  
TvI}yaCu/x  
while(top>0){ )](8 {}wo  
int j=stack[top--]; O@E&lP6  
int i=stack[top--]; i1aS2gFi_  
}zLe;1Tx  
pivotIndex=(i+j)/2; hih`:y  
pivot=data[pivotIndex]; GIZNHG   
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SortUtil.swap(data,pivotIndex,j); Txoc  
rR C3^X`u  
file://partition X]y3~|K  
l=i-1; rM>&! ?y+  
r=j; ;'J L$=  
do{ /=7|FtB`  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z$WT ~V  
SortUtil.swap(data,l,r); -t*C-C'"|  
} @}fnR(fS  
while(l SortUtil.swap(data,l,r); C: e}}8i  
SortUtil.swap(data,l,j); xn}'!S2-b  
CB?.| )Xam  
if((l-i)>THRESHOLD){ BA t2m-  
stack[++top]=i; VT'$lB%IK  
stack[++top]=l-1; by8d18:it  
} xYwbbFGrG  
if((j-l)>THRESHOLD){ Y6{p|F?&"  
stack[++top]=l+1; c1:op@t  
stack[++top]=j; @ju-cv+  
} CqrmdWN  
cRU.   
} ]/d2*#  
file://new InsertSort().sort(data); A]=?fyPh{'  
insertSort(data); |ZRl.C/e  
} hj4A&`2  
/** >O\-\L  
* @param data 9=JU &/!  
*/ \vm'D'9  
private void insertSort(int[] data) { xsAF<:S\  
int temp; r-Dcc;+=Q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !uHI5k,f  
} #UXmTrZ.  
} -F5U.6~`!  
}  ) mv}u~  
z': >nw  
} x!"!oJG^k  
\ 2".Kb@=  
归并排序: (iWNvVGS  
Po^2+s(fY  
package org.rut.util.algorithm.support; n\cP17dr  
88G[XkL$2  
import org.rut.util.algorithm.SortUtil; OWq~BZ{  
`yC R.3+  
/** w;#9 hW&  
* @author treeroot \LM'KD pP_  
* @since 2006-2-2 7Uj[0Awn  
* @version 1.0 jj$'DZk  
*/ x$s#';*  
public class MergeSort implements SortUtil.Sort{ 03rZz1  
Y1 -cz:  
/* (non-Javadoc) ]L_HnmD6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K"=v| a.  
*/ d[S C1J  
public void sort(int[] data) { b#XS.e/uf  
int[] temp=new int[data.length]; pr;L~$JW  
mergeSort(data,temp,0,data.length-1); MGmtA(  
} 3q1O:b^eo  
J-\b?R a  
private void mergeSort(int[] data,int[] temp,int l,int r){ twO)b"0  
int mid=(l+r)/2; hc[GpZcw,  
if(l==r) return ; ~i  &K,  
mergeSort(data,temp,l,mid); VUNQ@{ST|1  
mergeSort(data,temp,mid+1,r); '0o`<xW  
for(int i=l;i<=r;i++){ ^kXDEKm  
temp=data; y*7ht{B  
} _k j51=  
int i1=l; LI nN-b#  
int i2=mid+1; vys*=48g  
for(int cur=l;cur<=r;cur++){ s;5PHweWf  
if(i1==mid+1) JL(*peeu3  
data[cur]=temp[i2++]; *dKA/.g  
else if(i2>r)  j, G/[V  
data[cur]=temp[i1++]; YJ75dXc&&  
else if(temp[i1] data[cur]=temp[i1++]; ueWG/`ig  
else 7q67_u? @  
data[cur]=temp[i2++]; t*D[Q$v  
} &.4lhfI+(Q  
} F^ Q  
>ueJ+sgH  
} *#2`b%qh\M  
Qy3e ,9nS  
改进后的归并排序: q2hZ1o  
k| jC c  
package org.rut.util.algorithm.support; :+R ||q i  
^|sQkufo  
import org.rut.util.algorithm.SortUtil; X He=  
?>AhC{  
/** ' !_44  
* @author treeroot U}qW9X;o  
* @since 2006-2-2 M_XZOlW5  
* @version 1.0 !-;Me&"I=`  
*/ h.7 1O"N  
public class ImprovedMergeSort implements SortUtil.Sort { MA1,;pv6  
8a05`ZdP  
private static final int THRESHOLD = 10; \<PX'mnO  
@D60  
/* :))AZ7_  
* (non-Javadoc) 3PJ  
* 1DLQ Zq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H$[--_dI{  
*/ WrD20Q$9Q  
public void sort(int[] data) { :V_$?S  
int[] temp=new int[data.length]; goHr# @  
mergeSort(data,temp,0,data.length-1); }& 1_gn15  
} #2WBYScW0  
Az)P&*2:'`  
private void mergeSort(int[] data, int[] temp, int l, int r) { <~Y4JMr"  
int i, j, k; YobIbpo  
int mid = (l + r) / 2; 5jsnE )  
if (l == r) Q5jP`<zWU  
return; =ecv;uu2  
if ((mid - l) >= THRESHOLD) hrXN 38-  
mergeSort(data, temp, l, mid); '+}hVfN  
else ? `w ~1  
insertSort(data, l, mid - l + 1); `i.f4]r  
if ((r - mid) > THRESHOLD) f|q6<n_nM  
mergeSort(data, temp, mid + 1, r); .z{7 rH  
else EG1SIEo  
insertSort(data, mid + 1, r - mid); h]D=v B  
:s$9#}hw,  
for (i = l; i <= mid; i++) { d-?~O~qD|!  
temp = data; }U #S*  
} Y&j6;2-Z  
for (j = 1; j <= r - mid; j++) { |RpC0I  
temp[r - j + 1] = data[j + mid]; Ia(A&Za  
} $h$+EE!  
int a = temp[l]; (te \!$  
int b = temp[r]; %WO;WxG8^  
for (i = l, j = r, k = l; k <= r; k++) { =LT({8  
if (a < b) { ~q1s4^J  
data[k] = temp[i++]; r7IhmdA  
a = temp; L~yy;)]W  
} else { gZPJZN/cpz  
data[k] = temp[j--]; f?{Y<M~]  
b = temp[j]; ", |wG7N K  
} V)0bLR  
} DL~LSh  
} 4$|G$h  
@*_K#3  
/** g`Rs;  
* @param data Xpa;F$VI  
* @param l ,O-lDzcw  
* @param i AOfQqGf  
*/ F`ihw[ Wn  
private void insertSort(int[] data, int start, int len) { dyx 4_!fO  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q \{\u J x  
} =T\pq8  
} ^|x{E20  
} bqe;) A7  
} lLg23k{'  
yV]-![`D  
堆排序: 2.NzB7c*CM  
(ncfR  
package org.rut.util.algorithm.support; T2Vj &EA@  
F_-yT[i  
import org.rut.util.algorithm.SortUtil; =-q)I[4#  
=djzE`)0  
/** {#;6$dU;(  
* @author treeroot cX&c%~  
* @since 2006-2-2 cf j6I  
* @version 1.0 T&S< 0  
*/ .oe,# 1Qh{  
public class HeapSort implements SortUtil.Sort{ +g.WO5A  
 c\x?k<=  
/* (non-Javadoc) 2HTZ, W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I@z{G r  
*/ -~aVt~{k/  
public void sort(int[] data) { gWlmQl  
MaxHeap h=new MaxHeap(); ]ny(l#Hu:  
h.init(data);  t]vz+VQ  
for(int i=0;i h.remove(); C )P N  
System.arraycopy(h.queue,1,data,0,data.length); @vv`86bm  
} UtWoSFZ'o!  
AX&1-U  
private static class MaxHeap{ Z@h]dU5%a  
My[L3KTTp  
void init(int[] data){ 3!}#@<j  
this.queue=new int[data.length+1]; i$F)h<OU+  
for(int i=0;i queue[++size]=data; $6J5yE  
fixUp(size); '2 )d9_ w  
} c^=:]^  
} >?DrC/  
NKMB,b  
private int size=0; wHY;Y-(ZT  
:*8@Mj Z4  
private int[] queue; 6F<L4*4U  
Z$pR_dazU  
public int get() { C qxP@  
return queue[1]; SZ0Zi\W  
} 5I<?HsK@  
;m&f Vp  
public void remove() { EU\1EBT^  
SortUtil.swap(queue,1,size--); sn *s7v:  
fixDown(1); :l 7\7IT  
} >!oN+8[~  
file://fixdown nyDqR#t  
private void fixDown(int k) {  CZuxH  
int j; YGNX+6Lz  
while ((j = k << 1) <= size) { +I/P5OGRN  
if (j < size %26amp;%26amp; queue[j] j++; {6KU.'#iF  
if (queue[k]>queue[j]) file://不用交换 5i#B?+Y  
break; \myj Y  
SortUtil.swap(queue,j,k); N-NwGD{  
k = j; )HU?7n.{  
} ~\Ynih  
} &B3kzs  
private void fixUp(int k) { .f6_[cS;g  
while (k > 1) { SGbo|Xe7:  
int j = k >> 1; 3Fr}8Dy  
if (queue[j]>queue[k]) PffwNj/l  
break; K'71uW>  
SortUtil.swap(queue,j,k); $4L=Dg  
k = j; Q;Oc# u  
} 8ZahpB  
} {1qEN_ERx  
YV2^eGr.  
} 3NJ-.c@(p  
``O\'{o&  
} 3 $RII -}>  
5= F-^  
SortUtil: u}$U|Cw-;T  
p;B +g X  
package org.rut.util.algorithm; Y /w vn8~C  
jRBx7|ON  
import org.rut.util.algorithm.support.BubbleSort; (* 2"dd  
import org.rut.util.algorithm.support.HeapSort; x~(Ul\EX  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8m 9G^s`[  
import org.rut.util.algorithm.support.ImprovedQuickSort; +wio:==  
import org.rut.util.algorithm.support.InsertSort; ?Z.YJXoKZ  
import org.rut.util.algorithm.support.MergeSort; JlH|=nIaj6  
import org.rut.util.algorithm.support.QuickSort; XM)|v |  
import org.rut.util.algorithm.support.SelectionSort; fW\u*dMMZE  
import org.rut.util.algorithm.support.ShellSort; 'DIE#l`  
85X^T]zo  
/** 5 )C~L]  
* @author treeroot TS%cTh'ItH  
* @since 2006-2-2 hgh1G7A&  
* @version 1.0 0zfrx-'zN  
*/ 8G@FX $$Q  
public class SortUtil { 1k hwwoo  
public final static int INSERT = 1; _\1(7?0D  
public final static int BUBBLE = 2; mki=.l$O  
public final static int SELECTION = 3; !O.B,  
public final static int SHELL = 4; Q/+a{m0 f  
public final static int QUICK = 5; w"Z >F]YZ  
public final static int IMPROVED_QUICK = 6; Uligr_c?  
public final static int MERGE = 7; pu^1s#g8w  
public final static int IMPROVED_MERGE = 8; &iSQ2a!l8b  
public final static int HEAP = 9; Mu:H'$"'H  
C= Zuy^  
public static void sort(int[] data) { `q/y|/v<  
sort(data, IMPROVED_QUICK); im?nR+t+X  
} g)"6|Z?D"  
private static String[] name={  ,cB`j7p(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }cf-r>WaR  
}; >0m-S :lk  
.)o5o7H  
private static Sort[] impl=new Sort[]{ 'IgtBd|K>  
new InsertSort(), a@X'oV`(2b  
new BubbleSort(), Kzmgy14o  
new SelectionSort(), X31kHK5F_  
new ShellSort(), "y`?KY$[N  
new QuickSort(), x0 #+yP  
new ImprovedQuickSort(), o]FQ)WRB  
new MergeSort(), 'z\F-Ttq  
new ImprovedMergeSort(), xq]&XlA:ug  
new HeapSort() 0r@rXwz  
}; G cbal:q  
Zaj<*?\  
public static String toString(int algorithm){ :Rq D0>1  
return name[algorithm-1]; *R:nB)(6<  
} 5|/vc*m_0'  
m1cyCD  
public static void sort(int[] data, int algorithm) { nQgn^z#  
impl[algorithm-1].sort(data); D +oo5  
} Z86[sQBg  
n1LS*-@  
public static interface Sort { %GIla *  
public void sort(int[] data); N Lo>"<Xb  
} Z,2uN!6  
(thzW r6;  
public static void swap(int[] data, int i, int j) { gi`ZFq@  
int temp = data; +I')>6  
data = data[j]; U_J|{*4S.!  
data[j] = temp; OO@$jXZB  
} _6|b0*jv'&  
} /q^( uWu  
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