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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。 }/g1s71  
插入排序: &09g0K66  
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package org.rut.util.algorithm.support; <= Aqi91  
 LAO2Py#  
import org.rut.util.algorithm.SortUtil; 'm|PSwB7  
/** z\r29IRh  
* @author treeroot At)\$GJ  
* @since 2006-2-2 m(p0)X),_i  
* @version 1.0 :!<U"AC  
*/ Rb l4aB+   
public class InsertSort implements SortUtil.Sort{ J8#3?Lp  
*7G5\[gI$  
/* (non-Javadoc) .$N8cYu0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Q~zli:  
*/ p}d+L{"V  
public void sort(int[] data) { W $EAo+V  
int temp; yR4++yk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LypBS]r u  
} 6'6,ySo]  
} t# <(Q  
} IfzZ\x .  
-cs$E2 -  
} KvkU]s_  
|$ &v)  
冒泡排序: 0S$6j-"  
{<L|Z=&k`  
package org.rut.util.algorithm.support; '/ *;g#W=  
-,^Z5N#\|  
import org.rut.util.algorithm.SortUtil; $@@@</VbP  
-cL wjI  
/** |[/'W7TV%?  
* @author treeroot r9!,cs  
* @since 2006-2-2 @r9[&  
* @version 1.0 GRj#1OqL  
*/ IXof- I%8  
public class BubbleSort implements SortUtil.Sort{ |eEXCn3{  
f/3rcYR;y  
/* (non-Javadoc) zsmlXyP'e!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1y7FvD~v  
*/ )A=&3Ui)ab  
public void sort(int[] data) { M:d} P  
int temp; =v49[i  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }x(Ewr  
if(data[j] SortUtil.swap(data,j,j-1); 1}"Prx-  
} /\d@AB^5I  
} RAAu3QKu  
} 9 gWqs'  
} 5[|ZceY  
qz&?zzz;  
} u?lbC9}$  
hL}AgY@  
选择排序: z\+Ug9Of  
iNv"!'|  
package org.rut.util.algorithm.support; *TC#|5  
h$$2(!G4  
import org.rut.util.algorithm.SortUtil; R&FO-{S  
`<IaQY  
/** 5"2pU{xmK  
* @author treeroot #?klVK&e/  
* @since 2006-2-2 yLEA bd%+  
* @version 1.0 ]y~"M  
*/ H.#zbKj  
public class SelectionSort implements SortUtil.Sort { +!eh\.u|]  
;kR+jC(  
/* U_<k*o@:  
* (non-Javadoc) y?ypRCgO.u  
* HA]5:ck  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gc2:^FVlh  
*/ ` 3h,Cy^  
public void sort(int[] data) { Zx U?d   
int temp; E<r<ObeRv`  
for (int i = 0; i < data.length; i++) { UthM?g^  
int lowIndex = i; KU 98"b5  
for (int j = data.length - 1; j > i; j--) { (65|QA   
if (data[j] < data[lowIndex]) { {q.|UCg[L  
lowIndex = j; 3%YDsd vQx  
} { \ ]KYI0  
} lnv&fu`1P  
SortUtil.swap(data,i,lowIndex); t 4>\ ;  
} %eW2w@8]  
} 0i~?^sT'  
\fJ _,  
} ]!v\whZ>  
(Ky$(Ubb#6  
Shell排序: .'zcD^  
`[F[0fY-  
package org.rut.util.algorithm.support; *Z2#U ?_  
+XpQ9Cd  
import org.rut.util.algorithm.SortUtil; \vF*n Z5/  
aqKrf(Rv  
/** rHJtNN8$k  
* @author treeroot _FP'SVa}D  
* @since 2006-2-2 Eu`K2_b  
* @version 1.0 p61F@=EL  
*/ @f`s%o  
public class ShellSort implements SortUtil.Sort{ ,QPo%{:p  
ChRCsu~  
/* (non-Javadoc) O ~D]C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Hk@LHC  
*/ !]l;n Fd  
public void sort(int[] data) { &FY7 D<  
for(int i=data.length/2;i>2;i/=2){ )}i|)^J  
for(int j=0;j insertSort(data,j,i); *  \%b1  
} Dn@Sjsj>  
} l,:> B-FV  
insertSort(data,0,1); A75z/O{  
} *_/n$& I%&  
x/uC)xm  
/** O]80";Uv  
* @param data ,nSapmg  
* @param j yt#~n _  
* @param i 9"f  
*/ gzEcdDD  
private void insertSort(int[] data, int start, int inc) { i^}ib RQbN  
int temp; "Zu>cbE  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Hgbrlh  
} 9@wmngvM*Y  
} {;+9A}e  
} O7z5,-  
{9XQ~t"m^  
} H-t"Z}  
s7s@!~  
快速排序: pP^5y{  
Y3bZ&G)  
package org.rut.util.algorithm.support; Y{OnW98  
T4h&ly5 f  
import org.rut.util.algorithm.SortUtil; oD=+  
hFMT@Gy  
/** J Mm'JK?  
* @author treeroot Ah_0o_Di  
* @since 2006-2-2 epG!V#I  
* @version 1.0 lN'b"N  
*/ \T {<{<n  
public class QuickSort implements SortUtil.Sort{ ca,U>'(y  
S3gd'Bahq  
/* (non-Javadoc) 1;JH0~403  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jS4 fANG  
*/ WP >VQZ&  
public void sort(int[] data) { L16">,5  
quickSort(data,0,data.length-1); vQmqYyOc2  
} }xpo@(e  
private void quickSort(int[] data,int i,int j){ Ti$_V_  
int pivotIndex=(i+j)/2; XvIY=~  
file://swap Zb$P`~(%  
SortUtil.swap(data,pivotIndex,j); `!y/$7p  
4q*mEV  
int k=partition(data,i-1,j,data[j]); 5U6b\jxX  
SortUtil.swap(data,k,j); {QVs[ J1  
if((k-i)>1) quickSort(data,i,k-1);  >f*Zf(F  
if((j-k)>1) quickSort(data,k+1,j); ASUleOI79(  
EM!9_8 f  
} ZiC~8p_f  
/** 2<tU  
* @param data tC\(H=ecP  
* @param i !YIW8SP)  
* @param j `Hd~H  
* @return $fG~;`T  
*/ 4nKlW_{,  
private int partition(int[] data, int l, int r,int pivot) { I 8VCR8q  
do{ )wCV]TdF  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NE+ ;<mW  
SortUtil.swap(data,l,r); o ^""=Z  
} 30{WGc@l#  
while(l SortUtil.swap(data,l,r); ]K|td)1X  
return l; -`,F e3  
} ahg]OWn#  
kHd`k.nW  
} :5_394v  
'M,O(utGv  
改进后的快速排序: F&a)mpFv3c  
/ommM  
package org.rut.util.algorithm.support; 9](RZ6A+o  
d$:LUxM#  
import org.rut.util.algorithm.SortUtil; >\[|c  
m.Ki4NUm  
/** lQ#='Jqfp  
* @author treeroot !7Nz_d~n  
* @since 2006-2-2 W|\$}@>  
* @version 1.0 naVbcY  
*/ v$#l]A_D  
public class ImprovedQuickSort implements SortUtil.Sort { 3|=L1Pw#  
c+501's  
private static int MAX_STACK_SIZE=4096; F"0=r  
private static int THRESHOLD=10; 0}N"L ml  
/* (non-Javadoc) s f8F h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Cgc-KNbk  
*/ $^`@lyr  
public void sort(int[] data) { P.- `[  
int[] stack=new int[MAX_STACK_SIZE]; i0rh {Ko  
+!$]a^3l  
int top=-1; 96i #  
int pivot; :*MR$Jf  
int pivotIndex,l,r; |>KOlwh5n  
,PeE'$q  
stack[++top]=0; _2w8S\  
stack[++top]=data.length-1; 3f(tb%pa5  
~nb1c:F  
while(top>0){ TNlOj a:  
int j=stack[top--]; lPw`KW  
int i=stack[top--]; k(M(]y_  
kY{;(b3Q  
pivotIndex=(i+j)/2; KO[,C[;|j  
pivot=data[pivotIndex]; \ `R8s_S  
Fb6d1I^wR  
SortUtil.swap(data,pivotIndex,j); #~[{*[B+  
=b#:j:r  
file://partition 8/R9YiY5*  
l=i-1; `o?PLE;)p  
r=j; H7}f[4S%  
do{ ^9 ^DA!'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ! =*k+gpF  
SortUtil.swap(data,l,r); :M8y 2f h  
} 009Q#[A  
while(l SortUtil.swap(data,l,r); 3EH7H W  
SortUtil.swap(data,l,j); 2yV^'o)  
P4fnBH4OQ  
if((l-i)>THRESHOLD){ mI5!rrRD|  
stack[++top]=i; PxA OKUpI  
stack[++top]=l-1; +#9 4 X)*  
} 2YK2t<EO  
if((j-l)>THRESHOLD){ +!)_[ zo  
stack[++top]=l+1; 1AQy 8n*  
stack[++top]=j; }#6~/ W  
} i':a|#e>  
6N[X:F 3`,  
} fWyXy%Qq  
file://new InsertSort().sort(data); h)Ol1[y`  
insertSort(data); zBc |gx  
} !o\e/HGc!  
/** W0<2*7s  
* @param data  vUR gR  
*/ Xn02p,,  
private void insertSort(int[] data) { 6pbtE]  
int temp; 9ePom'1f1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \LM.>vJ  
} >L433qR  
} A45!hhf  
} k|^`0~E  
/rHlFl|Wy  
} 0<+eN8od.  
G\K!7k`)!  
归并排序: EAlLxXDDh  
Qh+zs^-?  
package org.rut.util.algorithm.support; i5gNk)D  
d6)+d9?<  
import org.rut.util.algorithm.SortUtil; o{3>n" \w3  
0wt4C% .0  
/** a|z@5r%  
* @author treeroot mDO! o  
* @since 2006-2-2 |)S*RQb\  
* @version 1.0 .R)uk  
*/ xtut S  
public class MergeSort implements SortUtil.Sort{ a\}` f=T  
*Tr9pq%m  
/* (non-Javadoc) L~C:1VG5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -_= m j  
*/ :QC |N@C  
public void sort(int[] data) { 8vQR'<,  
int[] temp=new int[data.length]; a\&g;n8jA  
mergeSort(data,temp,0,data.length-1); KW/LyiP#  
} |,tKw4  
}s[`T   
private void mergeSort(int[] data,int[] temp,int l,int r){ vRH2[{KQ9  
int mid=(l+r)/2; qB3E  
if(l==r) return ; }i J$&CJ  
mergeSort(data,temp,l,mid); Yr[& *>S  
mergeSort(data,temp,mid+1,r); L_o/fTz4  
for(int i=l;i<=r;i++){ =MT'e,T  
temp=data; '$ [%x  
} =|dHD  
int i1=l; k 7:Z\RGy  
int i2=mid+1; U+zntB  
for(int cur=l;cur<=r;cur++){ V[n,fEPBr  
if(i1==mid+1) J$lfI^^  
data[cur]=temp[i2++]; %M:$ML6b<  
else if(i2>r) w~yC^`  
data[cur]=temp[i1++]; zbgGK7  
else if(temp[i1] data[cur]=temp[i1++]; kn/xt  
else f~7V<v  
data[cur]=temp[i2++]; k8r1)B4ab  
} Z\cD98B#  
} Hbn78,~ .  
=.w~qL  
} $hMD6<e  
Cj$:TWYIh[  
改进后的归并排序: Qe-PW9C  
<W+9 h0c  
package org.rut.util.algorithm.support; AH_qZTv0{Q  
"BZ@m:I6hy  
import org.rut.util.algorithm.SortUtil; 3O;"{E= <  
}Rw6+;  
/** ).AMfBQ=;  
* @author treeroot "Q{ l])N  
* @since 2006-2-2 2$v8{Y&  
* @version 1.0 EWr7eH  
*/  0T^ 0)c  
public class ImprovedMergeSort implements SortUtil.Sort { nLCaik_,m  
)j\_*SoH  
private static final int THRESHOLD = 10; R:j mn  
)sNPWn8<Uy  
/* =3!o _  
* (non-Javadoc) ".2d{B  
* *f_A :`:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N,l"9>CF  
*/ M8/:PmR<  
public void sort(int[] data) { XUnw*3tPJ  
int[] temp=new int[data.length]; (L yKo  
mergeSort(data,temp,0,data.length-1); $x,EPRNs  
} aNA ]hl  
Io[NN aF|  
private void mergeSort(int[] data, int[] temp, int l, int r) { _3< P(w{  
int i, j, k; qDU4W7|T`  
int mid = (l + r) / 2; [P6m8%Y|s  
if (l == r) p_X{'=SQ1  
return; #Ge_3^'  
if ((mid - l) >= THRESHOLD) i,S1|R  
mergeSort(data, temp, l, mid); xaVn.&Wl  
else r?!:%L  
insertSort(data, l, mid - l + 1); BC\W`K  
if ((r - mid) > THRESHOLD) "eqzn KT%u  
mergeSort(data, temp, mid + 1, r); pb)kN%  
else gS8+S\2  
insertSort(data, mid + 1, r - mid); *,IK4F6>:  
- Ry+WS=  
for (i = l; i <= mid; i++) { ;<_a ,5\Q  
temp = data; P$Oj3HD LM  
} -/V(Z+dj  
for (j = 1; j <= r - mid; j++) { E AZX  
temp[r - j + 1] = data[j + mid]; e<*qaUI  
} F-oe49p5e  
int a = temp[l]; >\w]i*%  
int b = temp[r]; vB}c6A4'U  
for (i = l, j = r, k = l; k <= r; k++) { r7L.W  
if (a < b) { GdY@$&z{i  
data[k] = temp[i++]; v/=\(  
a = temp; >^GV #z  
} else { |:.Uw\z5'  
data[k] = temp[j--]; 5[4nFa}R:5  
b = temp[j]; C ocw%Yl  
} 79D~Mau#  
} t 7o4 aBl"  
} ZO/u3&gU  
e([>sAx!1  
/** B\e*-:pq>  
* @param data l#%7BGwzY  
* @param l }WaZ+Mdg\  
* @param i "qd|!:bE  
*/ gPb.%^p  
private void insertSort(int[] data, int start, int len) { >3@3~F%xAX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); EwkSUA>Tm  
} MtaGv#mJ  
} ^m&I^ \  
} :8hI3]9  
} Rb.vyQ  
N5,LHO  
堆排序:  mC$y*G  
; +(VO  
package org.rut.util.algorithm.support; q6w)zTpJGJ  
~J&-~<%P}  
import org.rut.util.algorithm.SortUtil; ;{L[1OP%e  
`:*2TLxIk  
/** 4(LLRzzW  
* @author treeroot $#p5BQQ|  
* @since 2006-2-2 6<$.Z-,  
* @version 1.0 oBo*<6  
*/ {it}\[3  
public class HeapSort implements SortUtil.Sort{ tx~,7TMS/  
~!qnKM>[  
/* (non-Javadoc) BQ)>}YHk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W/hzo*o'g  
*/ x,.=VB  
public void sort(int[] data) { Qrg- xu=  
MaxHeap h=new MaxHeap(); F8"J<VJ7  
h.init(data); )E*f30  
for(int i=0;i h.remove(); =CJ`0yDQ>  
System.arraycopy(h.queue,1,data,0,data.length); }7(+#ISK6  
} PfRA\  
*1{A'`.=\  
private static class MaxHeap{ v/9ZTd  
GWWg3z.o"W  
void init(int[] data){ mL2J  
this.queue=new int[data.length+1]; :PW"7|c!  
for(int i=0;i queue[++size]=data; $!MP0f\q g  
fixUp(size); vI0,6fOd6  
} 6?~9{0  
} B=L!WGl<!  
]oVP_ &E  
private int size=0; #}+H  
] xHiy+  
private int[] queue; H-+U^@w  
nJ]7vj,rB  
public int get() { 4 ZnQpKg  
return queue[1]; WA~[) S0  
} $wp>2  
-X!<$<\y;  
public void remove() { ;!A8A4~nu  
SortUtil.swap(queue,1,size--); Z@Zg3AVU  
fixDown(1); q+9->D(6  
} BVNJas  
file://fixdown v_EgY2l(  
private void fixDown(int k) { IDT\hTPIs  
int j; g9|OhymB  
while ((j = k << 1) <= size) { 5L[imOM0  
if (j < size %26amp;%26amp; queue[j] j++; D]fuX|f~ul  
if (queue[k]>queue[j]) file://不用交换 v:QUwW  
break; n=V|NrU  
SortUtil.swap(queue,j,k); ''@Tke3IG6  
k = j; T` h%=u|D  
} &)tiO>B^6  
} G=|?aK{p  
private void fixUp(int k) { 1F,U^O  
while (k > 1) { Ig}hap]G  
int j = k >> 1; 5=I({=/>  
if (queue[j]>queue[k]) e'A_4;~@s  
break; BInSS*L  
SortUtil.swap(queue,j,k); //BJaWq  
k = j; [|oG}'Xz  
} x\8g ICf  
} 4X]/8%]V  
Ja:4EU$Lu  
} QUn!& 55  
JX&]>#6|E  
} m;l[flQ~  
@9| jY1  
SortUtil: npltsK):  
4 H0rS'5d  
package org.rut.util.algorithm; +_J@8k  
F_'{:v1GW  
import org.rut.util.algorithm.support.BubbleSort; )/@KdEA:  
import org.rut.util.algorithm.support.HeapSort; fc@<'-VA  
import org.rut.util.algorithm.support.ImprovedMergeSort; XjN =UhC  
import org.rut.util.algorithm.support.ImprovedQuickSort; klnNBo!  
import org.rut.util.algorithm.support.InsertSort;  94PI  
import org.rut.util.algorithm.support.MergeSort; dxAGO(  
import org.rut.util.algorithm.support.QuickSort; ,$:u^;V(  
import org.rut.util.algorithm.support.SelectionSort; k- 9i  
import org.rut.util.algorithm.support.ShellSort; nMzt_IlI  
Hq 5#.rZ#  
/** ejZ-A?f-K  
* @author treeroot y,`n9[$K\  
* @since 2006-2-2 = K}Pfh  
* @version 1.0 X}(X\rp  
*/ [-VH%OM  
public class SortUtil { j!i* &  
public final static int INSERT = 1; W7WHDL^  
public final static int BUBBLE = 2; x)dLY.'|  
public final static int SELECTION = 3; G<-KwGy,D  
public final static int SHELL = 4; &,%n  
public final static int QUICK = 5; JseKqJ?g  
public final static int IMPROVED_QUICK = 6; aUZ?Ue9l>2  
public final static int MERGE = 7; a5/, O4Q  
public final static int IMPROVED_MERGE = 8; )jgz(\KZ  
public final static int HEAP = 9; #rX ^)2  
ai$l7]7  
public static void sort(int[] data) { eUQmW^  
sort(data, IMPROVED_QUICK); , 4xNW:!j  
} ,Ohhl`q(  
private static String[] name={ `)y ;7%-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DSRc4 |L  
}; i4D]>  
51|s2+GG  
private static Sort[] impl=new Sort[]{ "rLm)$I  
new InsertSort(), siCi+Y  
new BubbleSort(), *uRDB9#9,  
new SelectionSort(), E*5aLT5!,  
new ShellSort(), P_0X+Tz  
new QuickSort(), Y QC.jnb2  
new ImprovedQuickSort(), '6qH@r4Z<  
new MergeSort(), fDns r" T  
new ImprovedMergeSort(), 4N$Wpx  
new HeapSort() Ur< (TM  
}; S y <E@1  
elGBX h  
public static String toString(int algorithm){ `PtB2,?  
return name[algorithm-1]; dNf9,P_}  
} +BtLd+)R  
<tbs,lcw;  
public static void sort(int[] data, int algorithm) { 6Zn[l,\  
impl[algorithm-1].sort(data); uo]\L^j   
} IrCl\HQN  
qpe9?`vVX  
public static interface Sort { _@XueNU1hS  
public void sort(int[] data); )?SFIQ=  
} q!0HsF  
;hq_}.  
public static void swap(int[] data, int i, int j) { ? 3fnt"  
int temp = data; Zj]tiN f\"  
data = data[j]; 2*w`l|Sx  
data[j] = temp; npkT>dB+  
} t=Rl`1 =(K  
} 3Y)z{o>P  
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