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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。 q2i~<;Z)9  
插入排序: bvTkS EN  
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package org.rut.util.algorithm.support; >9|+F [Fc  
)Q?[_<1Y+  
import org.rut.util.algorithm.SortUtil; zKT<QM!`  
/** 8}@a?QS(&  
* @author treeroot <9ph c  
* @since 2006-2-2 a8c]B/  
* @version 1.0 ZA@"uqa6b  
*/ '2oBi6|X  
public class InsertSort implements SortUtil.Sort{ #+nv,?@  
<N&f >7  
/* (non-Javadoc) DL{a8t1L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F\<i>LWT'  
*/ Sp:de,9@  
public void sort(int[] data) { .?:~s8kB  
int temp; }1 ^.A84a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~;Kl/Z  
} HEN9D/O=  
} OPjh"Hv  
} 3W0:0I  
FM];+d0  
} tgnXBWA`!  
\ziF(xTvqG  
冒泡排序: mJT m/C  
,/9|j*9H  
package org.rut.util.algorithm.support; Vtri"G8 aB  
<0}'#9>O  
import org.rut.util.algorithm.SortUtil; ]uf_"D  
w+H=Xh4t  
/** |05LHwb>  
* @author treeroot f#mpd]e+6  
* @since 2006-2-2 \SR  
* @version 1.0 z>~3*a9&  
*/ I*"]!z1  
public class BubbleSort implements SortUtil.Sort{ u{ /gjv  
R)z|("%ec  
/* (non-Javadoc) =c'LG   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cPSu!u}D  
*/ {]]I4a  
public void sort(int[] data) { +/tD$  
int temp; XMdYted  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0:EiCKb)ol  
if(data[j] SortUtil.swap(data,j,j-1); huIr*)r&p  
} :1Cc~+]w(u  
} G$b4`wt  
} gu!A:Q  
} ?~Des"F6)1  
/^"TMm   
} rYJvI  
~S9nLb:O{  
选择排序: V<7Gd8rDMM  
L~~aW0,  
package org.rut.util.algorithm.support; (Lp-3Xx  
bvG Vfr "  
import org.rut.util.algorithm.SortUtil; <4Fd ~  
~A)$="  
/** -h}J%UV  
* @author treeroot gqhW.e}]  
* @since 2006-2-2 foeVjL:T  
* @version 1.0 x?kZD~|{)  
*/ f  W )  
public class SelectionSort implements SortUtil.Sort { VO9<:R  
{BF\G%v;+  
/* fiZ8s=J  
* (non-Javadoc) SO%5ts  
* Am0$UeSZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fITml6mbE  
*/ 2:abe  
public void sort(int[] data) { 7]Egu D4  
int temp; xl3U  
for (int i = 0; i < data.length; i++) { =Y BJ7.Y  
int lowIndex = i; I6\3wU~).  
for (int j = data.length - 1; j > i; j--) { <j>@Fg#q  
if (data[j] < data[lowIndex]) { ,-Na'n  
lowIndex = j; wcOAyo5(n  
} $2.DZ  
} v#6.VUAw  
SortUtil.swap(data,i,lowIndex); \yqiv"'  
} #SdaTMLFf  
} 86Rit!ih  
VlEkT9^:  
} bMZ0%(q  
Wwz>tE  
Shell排序: cE3co(j  
O Rfl v+  
package org.rut.util.algorithm.support;  LCG<  
%bsdC0xM  
import org.rut.util.algorithm.SortUtil; sk5\"jna  
rk~/^(!  
/** 5*CwQJC<  
* @author treeroot 0\m zGfd  
* @since 2006-2-2 Q -+jG7vT  
* @version 1.0 ,iyIF~1~#>  
*/ ]:njP3r  
public class ShellSort implements SortUtil.Sort{ 0MOAd!N  
; ^$RG  
/* (non-Javadoc) B}Qo8i7 z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z7CYYU?  
*/ &.}zZ/  
public void sort(int[] data) { ] !H<vR$8  
for(int i=data.length/2;i>2;i/=2){ #G,e]{gs  
for(int j=0;j insertSort(data,j,i); MLDuo|?  
} ldxUq,p  
}  4@5<B  
insertSort(data,0,1); oH;Y}h  
} {r"s.|n  
 }N[sydL  
/** b&ADj8cKC  
* @param data vH=I#Ajar  
* @param j suVS!} C  
* @param i RPrk]<<1  
*/ o 2DnkzpJ  
private void insertSort(int[] data, int start, int inc) { 1 ID! rxE  
int temp; `8Om*{xg  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZGrV? @o,6  
} ] =D+a&  
} /; _"A)0  
} Ze~\=X" "  
E )PEKWK\  
} ^O ?$} sr  
B)(A#&nrb  
快速排序: 5!Guf?i  
o%dtf5}(,  
package org.rut.util.algorithm.support; wjl? @K  
Kb}N!<Z*  
import org.rut.util.algorithm.SortUtil; 4b#YpK$7U  
}A#FGH +  
/** Y8d%L;b[D  
* @author treeroot YONg1.^!(  
* @since 2006-2-2 JmBYD[h,  
* @version 1.0 *)w 8fq  
*/ h$k(|/+  
public class QuickSort implements SortUtil.Sort{ T7,tJk,(  
464Z0C  
/* (non-Javadoc) *8Lym,]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4, :D4WYWD  
*/ ZpZ~[BtQ  
public void sort(int[] data) { IL~yJx_11  
quickSort(data,0,data.length-1); $yt|nO  
} DQ~@=%?ni  
private void quickSort(int[] data,int i,int j){ | zAey\  
int pivotIndex=(i+j)/2; VTF),e!  
file://swap T.xW|Iwx  
SortUtil.swap(data,pivotIndex,j); :!|xg! |y  
B1GSZUd^?0  
int k=partition(data,i-1,j,data[j]); A(C3kISM  
SortUtil.swap(data,k,j); o(a*Fk$  
if((k-i)>1) quickSort(data,i,k-1); AXJC&O}`  
if((j-k)>1) quickSort(data,k+1,j); :c6%;2  
_[<I&^%  
} SsaF><{5R  
/** # ><.zZ  
* @param data WgY3g1C  
* @param i 0D\FFfs  
* @param j h.c)+wz/%C  
* @return ]s u\[?l  
*/ :gR`rc!  
private int partition(int[] data, int l, int r,int pivot) { "z qt'b0bW  
do{ h\yYg'CC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); osnDW aN  
SortUtil.swap(data,l,r); ch-GmAj 9  
} ;mMn-+3<  
while(l SortUtil.swap(data,l,r); `W-:@?PmQx  
return l; Obw uyhjQ  
} D3jP hPy.  
& MAIm56~  
} [6c{t  
1e&`m~5K+  
改进后的快速排序: YT-t$QyL  
H6~QSe0l  
package org.rut.util.algorithm.support; amPQU  
3GaM>w}>W  
import org.rut.util.algorithm.SortUtil; y(q1~73s  
al^ yCoB  
/** :@pm gp  
* @author treeroot v!W,h2:J  
* @since 2006-2-2 lte~26=e  
* @version 1.0 x*_c'\F|  
*/ LNr2YRpyz  
public class ImprovedQuickSort implements SortUtil.Sort { ."MBKyg6  
f}@]dFr  
private static int MAX_STACK_SIZE=4096; @ws3X\`<C  
private static int THRESHOLD=10; -]N/P{=L  
/* (non-Javadoc) Ex~OT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "F0,S~tZZ  
*/ yy%J{;  
public void sort(int[] data) { 6 Iup4sP  
int[] stack=new int[MAX_STACK_SIZE]; ~DCw [y  
Vls*fY:W  
int top=-1; Um*{~=;u  
int pivot; M34*$>bk  
int pivotIndex,l,r; /Cwt4.5  
398%16}  
stack[++top]=0; R|Ykez!D  
stack[++top]=data.length-1; Ii;~ xc  
]T+{]t  
while(top>0){ f^nogw<z!  
int j=stack[top--]; u dH7Q&"  
int i=stack[top--]; Vj`9j. 5  
Z>o20uA  
pivotIndex=(i+j)/2; TlM ]d;9G  
pivot=data[pivotIndex]; u YJ6 "j  
WM9QC59  
SortUtil.swap(data,pivotIndex,j); eoow]me  
i1  
file://partition P hn&hRAO  
l=i-1; +8v!vuO'  
r=j; j_Dx4*v g  
do{ ZJd1Lx   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot));  M)Y`u  
SortUtil.swap(data,l,r); }`>u+iH#a  
} ='YR;  
while(l SortUtil.swap(data,l,r); ?e yo2:-$  
SortUtil.swap(data,l,j); e PlEd'Z  
M]eH JZ~v  
if((l-i)>THRESHOLD){ *p+%&z_<  
stack[++top]=i; skr^m%W  
stack[++top]=l-1; ba|~B8rII[  
} _G[5S-0 [  
if((j-l)>THRESHOLD){ nz+DPk["  
stack[++top]=l+1; hO\_RhsRy?  
stack[++top]=j; (5VP*67  
} ;clF\K>  
spgY &OI;  
} :MpIx&  
file://new InsertSort().sort(data); K+PzTGWq^  
insertSort(data); q1Ah!9B  
} N#Y4nllJ  
/** ~M+|g4W%  
* @param data _ 4pBJOJQ6  
*/ CShVJ:u+K\  
private void insertSort(int[] data) { R )ejIKtY  
int temp; hE+6z%A8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %I[(`nb  
} mG\,T3/*  
} ^D"}OQoh  
} ;,4Z5+  
mJ[LmQ<:  
} %0. o(U  
Hz!+g'R!Gs  
归并排序: 8qo{%  
OP%h`  
package org.rut.util.algorithm.support; ;OE{&  
NC|&7qQ  
import org.rut.util.algorithm.SortUtil; 5fM/y3QPsZ  
X 1^f0\k  
/** l 8n#sGA%  
* @author treeroot ]g!k'@  
* @since 2006-2-2 I3p ~pt2  
* @version 1.0  E~jNUTq  
*/ ct fKxGH  
public class MergeSort implements SortUtil.Sort{ vNHM e{,u  
5fSDdaO  
/* (non-Javadoc) )%f]`<o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DTsc&.29^  
*/ ;"wU+  
public void sort(int[] data) { D9+a"2|3<  
int[] temp=new int[data.length]; No!P?  
mergeSort(data,temp,0,data.length-1); y2o?a6`  
} {FteQ@(  
tbl!{Qwx  
private void mergeSort(int[] data,int[] temp,int l,int r){ l&^9<th  
int mid=(l+r)/2; DTI+VY .W^  
if(l==r) return ; ^s_E|~U  
mergeSort(data,temp,l,mid); _|x%M}O},  
mergeSort(data,temp,mid+1,r); 1DN,  
for(int i=l;i<=r;i++){ qdjRw#LS^q  
temp=data; m>jX4D7KZ  
} {.DI[@.g  
int i1=l; Xo;J1H  
int i2=mid+1; [P`Q_L,+  
for(int cur=l;cur<=r;cur++){ Yk6fr~b  
if(i1==mid+1) 's(0>i  
data[cur]=temp[i2++]; <~<I K=n  
else if(i2>r) aG?'F`UQ  
data[cur]=temp[i1++]; E _/v$  
else if(temp[i1] data[cur]=temp[i1++]; rM/*_0[`d  
else 6P3ezl@#;  
data[cur]=temp[i2++]; 0`3ey*  
} p%G4Js.  
} *<OWd'LI  
f @Hp,-  
} M%1-fd  
?so 3Kj6H  
改进后的归并排序: )p).}"   
 Xb&r|pR  
package org.rut.util.algorithm.support; mAX]m1s  
Yono8M;9*  
import org.rut.util.algorithm.SortUtil; pzCD' !*  
uZW ?0W  
/** U]@t\T3W  
* @author treeroot 4Q,HhqV'  
* @since 2006-2-2 nZ$,Bjb  
* @version 1.0 iEsI  
*/ 8n,i5>!d  
public class ImprovedMergeSort implements SortUtil.Sort { I^qk`5w  
/1gKc}rB2  
private static final int THRESHOLD = 10;  7=6p  
ec)G~?FH  
/* I,l%6oPa  
* (non-Javadoc) \4bma<~a  
* iS hB ^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0/#XUX 4  
*/ "mSDL:$  
public void sort(int[] data) { d&n0:xOc  
int[] temp=new int[data.length]; +[zrU`!@  
mergeSort(data,temp,0,data.length-1);  #Z"N\49  
} Z8}Zhe.  
9 %,_G.  
private void mergeSort(int[] data, int[] temp, int l, int r) { `Z{; c  
int i, j, k; I`5F& 8J{  
int mid = (l + r) / 2; L`V6\Ix(I  
if (l == r) o`DBzC  
return; i/, G=yA  
if ((mid - l) >= THRESHOLD) VX[{X8PkS  
mergeSort(data, temp, l, mid); ? Ls]k  
else 3|[:8  
insertSort(data, l, mid - l + 1); P(VQD>G  
if ((r - mid) > THRESHOLD) >6@*%LM  
mergeSort(data, temp, mid + 1, r); "a?k #!E  
else 6T;C+Y$  
insertSort(data, mid + 1, r - mid); lF 8B+  
Ra;e#)7 X  
for (i = l; i <= mid; i++) { SrN0f0  
temp = data; #OJsu  
} \Nb6E&+  
for (j = 1; j <= r - mid; j++) { i5(_.1X<#{  
temp[r - j + 1] = data[j + mid]; 6K[s),rdv  
} '4L i  
int a = temp[l]; ?P4`  
int b = temp[r]; +G7A.d`V}  
for (i = l, j = r, k = l; k <= r; k++) { Y=vA ;BE]R  
if (a < b) { dWg$yH  
data[k] = temp[i++]; YzhZ%:8  
a = temp; "sUe:F;  
} else { '355Pce/  
data[k] = temp[j--]; ?$ Uk[  
b = temp[j]; <$Q&n{  
} TAi |]U!  
} H-1@z$p  
} aS'G&(_  
$B2* x$  
/** -XPGl  
* @param data ^NHQ[4I  
* @param l Q'7o_[o/  
* @param i .J&NM(qeZ  
*/ {SqY77  
private void insertSort(int[] data, int start, int len) { CImB,AXS  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); A^3cP, L  
} [\@!~F{  
} YZr^;jfP  
} b1\z&IdC  
} QEQ8gfN9>  
Kcsje_I-M  
堆排序: q.K >v'  
]^8:"Ky'  
package org.rut.util.algorithm.support; ky#<\K1}'  
3543[W#a  
import org.rut.util.algorithm.SortUtil; ^Ac0#oX]M  
pZlBpGQf  
/** %vxd($Ti"  
* @author treeroot 1Q#hanh_`  
* @since 2006-2-2 ?9Fv0-g&n  
* @version 1.0 _&19OD%  
*/ l1gAm#  
public class HeapSort implements SortUtil.Sort{ FT[wa-b  
U5dJ=G  
/* (non-Javadoc) y!blp>V6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CW*6 -q  
*/  T~ /Bf  
public void sort(int[] data) { j<8_SD=,  
MaxHeap h=new MaxHeap(); u vc0"g1h  
h.init(data); C/<fR:`c  
for(int i=0;i h.remove(); v srce  
System.arraycopy(h.queue,1,data,0,data.length); o! sxfJKl  
} m-, '  
gS4K](KH |  
private static class MaxHeap{ O JvEq@  
$daI++v`  
void init(int[] data){ KD-0NO=oL  
this.queue=new int[data.length+1]; AJC Wp4,  
for(int i=0;i queue[++size]=data; X H{5E4P  
fixUp(size); ,y:q]PR  
} yoGE#+|7^  
} vQc>jmS+n  
]9R?2{"K  
private int size=0; K~x G+Kh  
5c'rnMW4+p  
private int[] queue; jM2gu~  
oJ{)0;<~L  
public int get() { Z TjlGU `  
return queue[1]; &y3_>!L  
} ] A<\ d  
o~mY,7@a  
public void remove() { &XrF#s  
SortUtil.swap(queue,1,size--); ;6fkG/T  
fixDown(1); ds5<4SLj  
} w?oIKj  
file://fixdown }gag?yQ.^  
private void fixDown(int k) { +&(sZFW5o  
int j; _ky!4^B  
while ((j = k << 1) <= size) { <ywxz1i  
if (j < size %26amp;%26amp; queue[j] j++; IB(IiF5  
if (queue[k]>queue[j]) file://不用交换 6CY_8/:zL  
break; zT!JHG  
SortUtil.swap(queue,j,k); c6BaC@2  
k = j; hCW8(Zt  
} G]QD6b9~  
} J[VQ6fD%  
private void fixUp(int k) { Z|'tw^0e5  
while (k > 1) { i+21tG$  
int j = k >> 1; SV6Np?U  
if (queue[j]>queue[k]) =qI JXV  
break; FIC 2)  
SortUtil.swap(queue,j,k); Zt[ P kBi  
k = j; M~ynJ@q  
} +es.V /  
} 0sV;TQt+f  
rb`C:#j{J  
} xQWZk`6~L  
`4\H'p  
} ]#3=GFs/  
Ms{v;fT  
SortUtil: -_b}b)2iYN  
42Kzdo|}  
package org.rut.util.algorithm; @105 @9F  
CIO&VK  
import org.rut.util.algorithm.support.BubbleSort; `lcpUWn  
import org.rut.util.algorithm.support.HeapSort; ZuBVq  
import org.rut.util.algorithm.support.ImprovedMergeSort; 89'nbg  
import org.rut.util.algorithm.support.ImprovedQuickSort; <Ni]\-*  
import org.rut.util.algorithm.support.InsertSort; }{j[  
import org.rut.util.algorithm.support.MergeSort; 47ir QK*  
import org.rut.util.algorithm.support.QuickSort; =]Qu"nRB  
import org.rut.util.algorithm.support.SelectionSort; W?XvVPB  
import org.rut.util.algorithm.support.ShellSort; &qrH  
R:^GNra;  
/** G>*s+  
* @author treeroot 1eiH%{w  
* @since 2006-2-2 i]9SCO  
* @version 1.0 Hr96sN.R   
*/ )|Y"^K%Jm  
public class SortUtil { 7CrWsQl u  
public final static int INSERT = 1; ==UH)o`?8  
public final static int BUBBLE = 2; ;rd!kFd#bq  
public final static int SELECTION = 3; x<9|t(  
public final static int SHELL = 4; )Cu"M #`  
public final static int QUICK = 5; 0o`0Td  
public final static int IMPROVED_QUICK = 6; TtkB  
public final static int MERGE = 7; H'Z[3e  
public final static int IMPROVED_MERGE = 8; jr~76  
public final static int HEAP = 9; !C#q  
i1|-  
public static void sort(int[] data) { NpH)K:$#%  
sort(data, IMPROVED_QUICK); ;uR8pz e  
} G} }oeS  
private static String[] name={ F?5kl/("  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3smcCQA%  
}; Z#"6&kv  
.`xcR]PQ  
private static Sort[] impl=new Sort[]{ >q[Elz=dI  
new InsertSort(), K _O3DcQ  
new BubbleSort(), #l8CUg~Uj  
new SelectionSort(), 9Tjvc!4_b  
new ShellSort(), BXyZn0k  
new QuickSort(), pS0-<-\R  
new ImprovedQuickSort(), aViJ?*  
new MergeSort(), h1JG^w$ 5  
new ImprovedMergeSort(), @36^4E>h  
new HeapSort() M7!&gFv8  
}; (w"zI!  
d3^LalAp  
public static String toString(int algorithm){ y~p7&^FeR  
return name[algorithm-1]; F}i rCi47c  
} !Y`nKC(=z  
36&7J{MU  
public static void sort(int[] data, int algorithm) { @: %}clZ  
impl[algorithm-1].sort(data); tEBf2|<  
} YR~g&E#U^  
!Bu<6  
public static interface Sort {  ,ulTZV  
public void sort(int[] data); KC8A22  
} CaZEU(i  
~>s^/`|?  
public static void swap(int[] data, int i, int j) { J"FKd3~:E  
int temp = data; \p [!@d^  
data = data[j]; *R1x^t+)  
data[j] = temp; 2ORWdR.b  
} o"QpV >x  
} SZvw>=)a  
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