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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。 ujan2'YT  
插入排序: !v68`l15  
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package org.rut.util.algorithm.support; AoFxho  
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import org.rut.util.algorithm.SortUtil; +LB2V3UZ  
/** 4ztU) 1  
* @author treeroot " gQJeMU  
* @since 2006-2-2 z 8y.@<6  
* @version 1.0 Xcw 6mpLt  
*/ gvCQ![  
public class InsertSort implements SortUtil.Sort{ LyNLz m5  
H tAO9  
/* (non-Javadoc) ^j *H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Pt\GVWi_t  
*/ MNu\=p\Eq  
public void sort(int[] data) { T))F r:  
int temp; Ta NcnAY>9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [Nv)37|W  
} aK5O0`  
} Mi:i1i cdn  
} &b9bb{y_$K  
1dl(`=^X  
} ]%eyrbU  
<Wa7$hF  
冒泡排序: ^ RIWW0  
LtVIvZie  
package org.rut.util.algorithm.support; z#Db~  
W_RN@O  
import org.rut.util.algorithm.SortUtil; 0;Z] vl/|  
fX{Xw0  
/** &@fW6},iW  
* @author treeroot fx*Q,}t  
* @since 2006-2-2 bTc^ huP  
* @version 1.0 s7"5NU-  
*/ Kdr} 7#c  
public class BubbleSort implements SortUtil.Sort{ z6uHe{|  
pz ~REsx  
/* (non-Javadoc) ^F g!.X_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZYs?65.  
*/ X3R:^ff\  
public void sort(int[] data) { 1HBWOV7z.?  
int temp; ra}t#Xt`  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7_c/wbA#me  
if(data[j] SortUtil.swap(data,j,j-1); 6ac_AsFK  
} 7Y6b<:4j  
} ]/{iIS_  
} X6so)1jJ  
} v(~EO(n.  
9T%b#~?3P  
} Eu2(#z 6eW  
("P]bU+'>  
选择排序: uxbLoE  
g>;"Fymc'  
package org.rut.util.algorithm.support; N ,nvAM  
F!zGk(Pu  
import org.rut.util.algorithm.SortUtil; C=8IQl[^e  
u-@;Q<v$  
/** *X8Pa ;x  
* @author treeroot %hi]oz  
* @since 2006-2-2 iiv`ji  
* @version 1.0 q+{yv  
*/ =+w/t9I[  
public class SelectionSort implements SortUtil.Sort { `Ln1g@  
|>Pz#DCy  
/* <[' ucp  
* (non-Javadoc) FYIz_GTk  
* hq?F8 1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bJ^Jmb  
*/ N*SUA4bnuM  
public void sort(int[] data) { wo9`-o6  
int temp; vQ8$C 3  
for (int i = 0; i < data.length; i++) { =55V<VI  
int lowIndex = i; ;jh.\a_\  
for (int j = data.length - 1; j > i; j--) { uTNy{RBD+  
if (data[j] < data[lowIndex]) { : `,#z?Rk  
lowIndex = j; lm|s%  
} uvJmEBL:  
} TecWv@.  
SortUtil.swap(data,i,lowIndex); N5 mhs#  
} Mo]aB:a  
} '#lc?Y(pJ2  
zI CAV -&  
} th}&|Y)T2  
jJAr #|  
Shell排序: {EJ+   
.p%V]Ka  
package org.rut.util.algorithm.support; F&HvSt}l5  
Ls'8  
import org.rut.util.algorithm.SortUtil; r=#v@]z B  
\jr-^n]  
/** K0\`0E^,  
* @author treeroot OoR0>!x Z  
* @since 2006-2-2 dZ\T@9+j+  
* @version 1.0 NjSjE_S2B8  
*/ iPrAB*  
public class ShellSort implements SortUtil.Sort{ =Lr# *ep[  
]j< & :_  
/* (non-Javadoc) *. ; }v@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FBrJVaF  
*/ &r V  
public void sort(int[] data) { D]d2opBLj  
for(int i=data.length/2;i>2;i/=2){ #NWc<Dd  
for(int j=0;j insertSort(data,j,i); K|-RAjE  
} |C;*GeyS;J  
} Xr pnc 7  
insertSort(data,0,1); Ib$?[  
} u1 (8a%ZC  
_95`w9  
/** vm"dE4W=  
* @param data (1Ii86EP  
* @param j WK6|e[iP  
* @param i MIwkFI8  
*/ )L:p.E  
private void insertSort(int[] data, int start, int inc) { ]}dAm S/  
int temp; O.+X,CQG*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T13Jno  
} Fv9n>%W&  
} FcZ)_m6m  
} rfxLCiV  
nD;8)VI'I  
} :[7.YQ   
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快速排序: &(HIBF'O  
Oe}6jcb6&  
package org.rut.util.algorithm.support; a,*~wmg  
.(2ui~ed  
import org.rut.util.algorithm.SortUtil; p=8?hI/bim  
pwO U6A!  
/** Qz/1^xy  
* @author treeroot mmrz:_  
* @since 2006-2-2 `@|Kx\y4=j  
* @version 1.0 ^{Y9!R*9U*  
*/ Vt D:'L-  
public class QuickSort implements SortUtil.Sort{ ;p'Ej'E  
G8_|w6  
/* (non-Javadoc) G[5z3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4I^8f||b_  
*/ 4Fpu68y  
public void sort(int[] data) { o2M4?}TpIV  
quickSort(data,0,data.length-1); |v%xOl  
} wsLfp82  
private void quickSort(int[] data,int i,int j){ w(Hio-l=  
int pivotIndex=(i+j)/2; gnN"pa!&~  
file://swap H '(Ky  
SortUtil.swap(data,pivotIndex,j); APBe 76'3)  
\z PcnDB  
int k=partition(data,i-1,j,data[j]); G;3N"az  
SortUtil.swap(data,k,j); B)4>:j:{?W  
if((k-i)>1) quickSort(data,i,k-1); jh&WL  
if((j-k)>1) quickSort(data,k+1,j); @d86l.=  
 G(1y_t  
} :F`yAB3  
/** 'u{DFMB-A  
* @param data NYcF]K}[  
* @param i mlD 1 o  
* @param j m@){@i2.  
* @return L4L[@tMPmY  
*/ hO@VYO   
private int partition(int[] data, int l, int r,int pivot) { EFb"{L  
do{ k)l^ ;x-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 0'9z XJ"  
SortUtil.swap(data,l,r); 1]<w ZV}.  
} 9(;I+.;8k  
while(l SortUtil.swap(data,l,r); ~'9>jpnw  
return l; n@Ar%%\  
} b:w {7  
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} g/ict 2!  
.s !qf!{V`  
改进后的快速排序: x)<Hr,wd  
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package org.rut.util.algorithm.support; a5AD$bP  
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import org.rut.util.algorithm.SortUtil; _v9P0W^.7  
pjP R3 r  
/** VV1I2YcKt  
* @author treeroot ?$#,h30  
* @since 2006-2-2 ,{br6*E  
* @version 1.0 jo_wBJKE  
*/ cj!Ew}o40D  
public class ImprovedQuickSort implements SortUtil.Sort { "/zIsn7  
0ThX1)SH  
private static int MAX_STACK_SIZE=4096; #&cNR_"w  
private static int THRESHOLD=10; J~jR`2+r  
/* (non-Javadoc) -3fzDxD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u`]J]gE  
*/ C;6Nu W  
public void sort(int[] data) { @l:o0(!W  
int[] stack=new int[MAX_STACK_SIZE]; 8JU9Qb]L'I  
u,R;=DNl  
int top=-1; ,L"1Ah  
int pivot; A#y,B  
int pivotIndex,l,r; m*d {pX  
-Pr1 r  
stack[++top]=0; J AK+v  
stack[++top]=data.length-1; gJ8+HV  
d,_Ky#K5b  
while(top>0){ O7_u9lz2  
int j=stack[top--]; Whd2mKwiO  
int i=stack[top--]; /@<&{_sybp  
]R$ u3F  
pivotIndex=(i+j)/2; C#r1zr6  
pivot=data[pivotIndex]; V4PV@{G  
7( &\)qf=n  
SortUtil.swap(data,pivotIndex,j); mP@< UjxI  
vt`V<3  
file://partition (Mk9##R#  
l=i-1; S<f]Y4A&  
r=j; ._uXK[c7P  
do{ =q%Q^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KZ"&c~[  
SortUtil.swap(data,l,r); {*Ag[HS0u  
} |bwz  
while(l SortUtil.swap(data,l,r); _%xe:X+ M  
SortUtil.swap(data,l,j); c==5cMUg  
zJH#J=O  
if((l-i)>THRESHOLD){ J 8z|ua  
stack[++top]=i; 6z6\-45  
stack[++top]=l-1; XA&Vtgu  
} [IF5Iv\b  
if((j-l)>THRESHOLD){ R|jt mI?  
stack[++top]=l+1; J-6l<%962%  
stack[++top]=j; |L@&plyB-  
} o_.f7|U!  
% Rv ;e  
} *Vbf ;=Mb  
file://new InsertSort().sort(data); >tmv3_<=  
insertSort(data); 59Lv/Mfy  
} C#^V<:9  
/** "Cj {Z@n  
* @param data 4=G)j+RCH  
*/ S2TyNZbQ  
private void insertSort(int[] data) { BwLggo  
int temp; !CBvFl/v  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hu ]l{TXi  
} ;qA(!`h+  
} Bb,l.w  
} [MQU~+]  
TpB4VNi/<  
} 3 #8bG(  
K1th>!JW'  
归并排序: )p$a1\ ~m  
o9<)rUy  
package org.rut.util.algorithm.support; ~ `xaBz0q  
}f l4^F  
import org.rut.util.algorithm.SortUtil; CFLWo1  
^^9O9]  
/** LU-,B?1  
* @author treeroot M$jU-;hRH  
* @since 2006-2-2 8|z@"b l)  
* @version 1.0 1}7Q2Ad w  
*/ TrYt(F{t  
public class MergeSort implements SortUtil.Sort{ bAUruTn  
T3_3k. ,|  
/* (non-Javadoc) S'h{["P~ 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !`A]YcQ  
*/ |7pi9  
public void sort(int[] data) { JO3x#1~;_  
int[] temp=new int[data.length]; fn~Jc~[G|  
mergeSort(data,temp,0,data.length-1); B24,;2J  
} S [$Os7  
CDT%/9+-  
private void mergeSort(int[] data,int[] temp,int l,int r){ N wISf  
int mid=(l+r)/2; nNEIwlj;  
if(l==r) return ; z#( `H6n:  
mergeSort(data,temp,l,mid); sTb@nrRxH  
mergeSort(data,temp,mid+1,r); Xi:y35q  
for(int i=l;i<=r;i++){ 1.U9EuI  
temp=data; ,&q Q[i  
} 'QP~uK  
int i1=l; #cAX9LV  
int i2=mid+1; L'@@ewA  
for(int cur=l;cur<=r;cur++){ J;|i6q q  
if(i1==mid+1) sN8)p%'Lg  
data[cur]=temp[i2++]; ng-rvr  
else if(i2>r) U9/>}Ni%3G  
data[cur]=temp[i1++]; 4#fgUlV  
else if(temp[i1] data[cur]=temp[i1++]; ~stG2^"[  
else u&Lp  
data[cur]=temp[i2++]; FRR`<do5$,  
} m35$4  
} u]uUm1Er  
XZew$Om[  
} 's>./Pf  
q qFN4AO  
改进后的归并排序: C}D\^(nLu.  
]tnf< 5x  
package org.rut.util.algorithm.support; i uGly~  
"/~KB~bB  
import org.rut.util.algorithm.SortUtil; 7A6:*  
Z< 4Du  
/** _enS_R  
* @author treeroot f$I$A(0P  
* @since 2006-2-2 8oxYgj&~X  
* @version 1.0 0\DlzIO  
*/ '6zk> rN  
public class ImprovedMergeSort implements SortUtil.Sort { L8.u7(-#  
C?-_8OA  
private static final int THRESHOLD = 10; ;>jLRx<KC  
FS^ie|8{D-  
/* [qHtN.  
* (non-Javadoc) {u@w^ hZ$  
* *T:gx:Sg/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .'Rz tBv  
*/ sNbCOTow  
public void sort(int[] data) { "}ZUa~7  
int[] temp=new int[data.length]; .J fV4!=o  
mergeSort(data,temp,0,data.length-1); =Dc9|WuHN  
} $QC^hC  
} :9UI  
private void mergeSort(int[] data, int[] temp, int l, int r) { VcpN PU6  
int i, j, k; 2y` :#e`x1  
int mid = (l + r) / 2; &?(472<f**  
if (l == r) *R8qnvE\()  
return; ,Jqk0cW2  
if ((mid - l) >= THRESHOLD) .~jn N  
mergeSort(data, temp, l, mid); +~l`rJ  
else iD`>Bt7gD  
insertSort(data, l, mid - l + 1); YH-+s   
if ((r - mid) > THRESHOLD) v3Xt<I=4y  
mergeSort(data, temp, mid + 1, r); NoD\t(@h  
else `bMwt?[*  
insertSort(data, mid + 1, r - mid); eW.[M?,  
(8d"G9R(  
for (i = l; i <= mid; i++) { p({)ZU3  
temp = data; e}bY 9  
} "Qfw)!#  
for (j = 1; j <= r - mid; j++) { +8eW/Bs@2  
temp[r - j + 1] = data[j + mid]; <F#/wU^9  
} 3oE3bBj  
int a = temp[l]; C Y K W4  
int b = temp[r]; =[x @BzH  
for (i = l, j = r, k = l; k <= r; k++) { * u{CnH  
if (a < b) { 9!UFLZR  
data[k] = temp[i++]; Zg2F%f$Y  
a = temp; (14J~MDB  
} else { I$vM )+v=  
data[k] = temp[j--]; & GM&,  
b = temp[j]; v.pj PBU1  
} i=DoK{`L  
} Ey**j  
} eq(Xzh  
&] euL:C  
/** XF=GmkO  
* @param data e Zb8x  
* @param l f[$9k}.  
* @param i PN @[k:5(  
*/ FdVWj 5 $a  
private void insertSort(int[] data, int start, int len) { 4RU/y+[o  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); H;nq4;^yK  
} Ls~F4ar$/  
} <+2M,fq+  
} |e#ea~/b  
} +""8aA  
ob3Z I  
堆排序: U3zwC5}BN  
;q6FdS  
package org.rut.util.algorithm.support; wtL_c  
g,seqh%  
import org.rut.util.algorithm.SortUtil; =W Q_5}  
kb>/R/,9  
/** h0)Wy>B=,  
* @author treeroot V/jEMJNks  
* @since 2006-2-2 pdQ6/vh  
* @version 1.0 z9#iU>@  
*/ ;v?!Pml2k  
public class HeapSort implements SortUtil.Sort{ o]vU(j_Ju  
 ou[_ y  
/* (non-Javadoc) fGD#|a;,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h) . ([  
*/ 5YG?m{hyn_  
public void sort(int[] data) { =os%22*  
MaxHeap h=new MaxHeap(); fEl,jA  
h.init(data); #sq$i  
for(int i=0;i h.remove(); ^|(w)Sy  
System.arraycopy(h.queue,1,data,0,data.length); 8R6!SB  
} K 8gd?88  
=N9a!i i|  
private static class MaxHeap{ mt+IB4`  
coxMsDs  
void init(int[] data){ LI&+5`  
this.queue=new int[data.length+1]; `.FvuwP  
for(int i=0;i queue[++size]=data; TuBl9 p'6  
fixUp(size); n~#%>C7  
} [kyF|3k~  
} ^/3R/;?  
f@R j;R~Jp  
private int size=0; !6pOY*> j  
GB(o)I#h  
private int[] queue; Xw=>L#Q  
- T,;Fr'  
public int get() { .]qj];m  
return queue[1]; NY'sZTM&  
} _M/ckv1q@  
%r0yBK2uOp  
public void remove() { .O{2]e$  
SortUtil.swap(queue,1,size--); `5[d9z/6  
fixDown(1); 1}C|Javkn  
} lEBt<  
file://fixdown h7NS9CgO  
private void fixDown(int k) { JRkC~fv  
int j; SSKn7`  
while ((j = k << 1) <= size) { ]w/`02w"$  
if (j < size %26amp;%26amp; queue[j] j++; *v[WJ"8@  
if (queue[k]>queue[j]) file://不用交换 /RuGh8qzP  
break; -v4kW0G  
SortUtil.swap(queue,j,k); ; /fZh:V2  
k = j; dyRKmLb  
} ] ZGP  
} O+Fu zCWj  
private void fixUp(int k) { ca@0?q#  
while (k > 1) { ,BCtNt(  
int j = k >> 1; bsw0+UY=9  
if (queue[j]>queue[k]) oZxC.;xJ  
break; NKD<VMcqw  
SortUtil.swap(queue,j,k); 1D03Nbh|5  
k = j; wRn]  
} 05mjV6j7m  
} wfQ 6J0  
vT V'D&x2  
} #1i&!et&/  
{OP[Rrm  
} ~ztsR;iL  
6 eqxwj{S[  
SortUtil: n}MW# :eJe  
5o 4\Jwt  
package org.rut.util.algorithm; &FF%VUfQJ  
n`Pwo &  
import org.rut.util.algorithm.support.BubbleSort; yrOWC  
import org.rut.util.algorithm.support.HeapSort; -xS{{"-  
import org.rut.util.algorithm.support.ImprovedMergeSort; o(GXv3L  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;uj&j1  
import org.rut.util.algorithm.support.InsertSort; /EF0~iy  
import org.rut.util.algorithm.support.MergeSort; {3F;:%$`c  
import org.rut.util.algorithm.support.QuickSort; XdX1GH*C  
import org.rut.util.algorithm.support.SelectionSort; 9MQ!5Zn  
import org.rut.util.algorithm.support.ShellSort; n,hl6[OL7  
q}[g/%  
/** hh/C{ l  
* @author treeroot ^'j? { @  
* @since 2006-2-2 h.PVRAwk  
* @version 1.0 !sWKi)1  
*/ h>AK^fX  
public class SortUtil { ru#,pJ=O(  
public final static int INSERT = 1; tHAr9  
public final static int BUBBLE = 2; 7e[3Pu_/X  
public final static int SELECTION = 3; w U".^ +  
public final static int SHELL = 4; q1!45a  
public final static int QUICK = 5; \ng!qN  
public final static int IMPROVED_QUICK = 6; +XV7W=  
public final static int MERGE = 7; 86pujXjc'  
public final static int IMPROVED_MERGE = 8; NWnUXR  
public final static int HEAP = 9; SU>2MT^  
$gZC"~BR  
public static void sort(int[] data) { .[mI9dc  
sort(data, IMPROVED_QUICK); jSi\/(E  
} =PU! hZj"L  
private static String[] name={ u!4i+7}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &CP]+ at  
}; :wWPEhK  
D,R"P }G  
private static Sort[] impl=new Sort[]{ s{g^K#BoFi  
new InsertSort(), vwF#;jj\  
new BubbleSort(), }6S~"<Ym  
new SelectionSort(), ZC7ZlL _  
new ShellSort(), % YgGw:wZ  
new QuickSort(), 'Cr2& dy  
new ImprovedQuickSort(), -/^a2_d[  
new MergeSort(), ?7;_3+T#  
new ImprovedMergeSort(), Dk ^,iY(u  
new HeapSort() Q[rmsk 2L'  
}; MBp,! _Q6  
W20qn>{z  
public static String toString(int algorithm){ 9Rf})$o+  
return name[algorithm-1]; "W71#n+ [  
} 62s0$vw  
5vP=Wf cW  
public static void sort(int[] data, int algorithm) { ve3-GWT{C  
impl[algorithm-1].sort(data); |$^a"Yd`9  
} @#u'z ~a)  
V1l9T_;f  
public static interface Sort { rlRRGJ\l  
public void sort(int[] data); K^6fg,&  
} A#;TY:D2  
n0 q$/Y.  
public static void swap(int[] data, int i, int j) { S+*%u/;l  
int temp = data; ,$oz1,Q/  
data = data[j]; cXDG(.!n7B  
data[j] = temp; fkHCfcU  
} W)LtnD2 w  
} 'uBagd>*  
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