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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。 "?W8 o[c+  
插入排序: ! L3|5:j  
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package org.rut.util.algorithm.support; 9>vB,8  
&Fjyi"8(r  
import org.rut.util.algorithm.SortUtil; : t75iB=  
/** aD6!x3c/  
* @author treeroot 7 n^1H[q  
* @since 2006-2-2 cS@p`A7Tpo  
* @version 1.0 -Ekf T_  
*/ i=pfjC  
public class InsertSort implements SortUtil.Sort{ </SO#g^r<  
kE!ky\E  
/* (non-Javadoc) +%~me?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $?VYHkX  
*/ qLKL*m  
public void sort(int[] data) { QA)"3g   
int temp; zzh7 "M3Qn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]gF=I5jn]  
} w !<-e>  
} knb0_nA  
} 9(_n8br1  
9y} J|z  
} > %Hw008  
v:>sS_^  
冒泡排序: [biz[ fm  
Zw%:mZN  
package org.rut.util.algorithm.support; wqap~X  
S@~ReRew2  
import org.rut.util.algorithm.SortUtil; R? N+./{  
Nd@/U c  
/** a"Ly9ovW  
* @author treeroot O0bOv S  
* @since 2006-2-2 )|5mW  
* @version 1.0 WU.eeiX  
*/ l <Z7bo  
public class BubbleSort implements SortUtil.Sort{ r&:yZN  
:6m"}8*q8  
/* (non-Javadoc) RQ#9[6w!v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iV\*7  
*/ - ku8n%u  
public void sort(int[] data) { yZNg[KH  
int temp; 2Qc_TgWF  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 3RcnoXX_  
if(data[j] SortUtil.swap(data,j,j-1); Wg8*;dvtM  
} }>3jHWxLc  
} at2)%V)  
} _. EM])b  
} pE0@m-p  
vNZ"x)?  
} e ]2GAJLI  
Z7?\ >4V  
选择排序: 2uF'\y  
{W%XS E  
package org.rut.util.algorithm.support; J@IKXhb7_  
*xKy^f  
import org.rut.util.algorithm.SortUtil; R+/kx#^  
V{\1qg{  
/** T$;BZ=_  
* @author treeroot fl4'dv  
* @since 2006-2-2 R4zOiBi'B  
* @version 1.0 `}a-prT<f  
*/ u%OLXb  
public class SelectionSort implements SortUtil.Sort { #H5 +8W  
ofgNL .u  
/* Y 7?q `  
* (non-Javadoc) o0dD  
* ;rnhv:Iw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YhN:t?  
*/ 3u s^\w#  
public void sort(int[] data) { `dl^)4J  
int temp; >{Xyl):  
for (int i = 0; i < data.length; i++) { @B?'Mu*  
int lowIndex = i; tdp>vI!  
for (int j = data.length - 1; j > i; j--) { CE| *&G  
if (data[j] < data[lowIndex]) { O>" |5 wj  
lowIndex = j; 8hSw4S "$  
} 7x*C` Et<x  
} p`!<yq2_  
SortUtil.swap(data,i,lowIndex); DV*e.Y>  
} y`7b3*P  
} -afNiNiY  
@Yw42`> !s  
} e{^lD.E  
_5OxESE  
Shell排序: bJ eF1LjS  
R(f%*S4  
package org.rut.util.algorithm.support; ndk~(ex|j  
1].m4vC  
import org.rut.util.algorithm.SortUtil; 3S%/>)k  
k? ,/om1  
/** U_UN& /f  
* @author treeroot .5A .[ZY)  
* @since 2006-2-2 C0ORB p  
* @version 1.0 "od 2i\  
*/ =t|,6Vp  
public class ShellSort implements SortUtil.Sort{ bY~V?yNgKM  
I y5)SZ'  
/* (non-Javadoc) I-Am9\   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w.+G+ r=  
*/  KcpQ[6\  
public void sort(int[] data) { S&Hgr_/}c  
for(int i=data.length/2;i>2;i/=2){ gTd r  
for(int j=0;j insertSort(data,j,i); ]L3MIaO2T  
} {Z>Mnw"R  
} Odw9]`,T  
insertSort(data,0,1); }1.'2.<Y  
} xlc2,L;i  
O6">Io5  
/** X2YBZA  
* @param data A3J=,aRI_v  
* @param j )vY)Mg  
* @param i P\@efq@!  
*/ `<hMrhfh  
private void insertSort(int[] data, int start, int inc) { -"x@V7X  
int temp; \J-D@b;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); <EY{goW  
} AMK(-=  
} D23 c/8K  
} E0u&hBd3_  
c&PaJm  
} ^#4<~zU  
on1B~?*D  
快速排序: *{O[}  
:+8qtIytKX  
package org.rut.util.algorithm.support; m.lzkS]P  
>^ E*7Bfp  
import org.rut.util.algorithm.SortUtil; n-OQCz9Xl  
=i},$"Bf*%  
/** | _nBiHjNn  
* @author treeroot TrQUhmS/!  
* @since 2006-2-2 e^N}(Kpy  
* @version 1.0 \ AB)L{  
*/ {??bJRT  
public class QuickSort implements SortUtil.Sort{ ^3QJv{)Q  
N).'>  
/* (non-Javadoc) J"XZnb)E=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k/)h@K8@  
*/ u7},+E)+B  
public void sort(int[] data) { E=]|v+#~  
quickSort(data,0,data.length-1); N%)q.'M  
} RP k'1nD  
private void quickSort(int[] data,int i,int j){ `(E$-m-~jH  
int pivotIndex=(i+j)/2; ,G[Y< ~Hy  
file://swap a&7uRR26  
SortUtil.swap(data,pivotIndex,j);  _ Ewkb  
&7r a  
int k=partition(data,i-1,j,data[j]); TK0W=&6#A  
SortUtil.swap(data,k,j); OMBH[_  
if((k-i)>1) quickSort(data,i,k-1); \Qf2:[-V0  
if((j-k)>1) quickSort(data,k+1,j); 1I40N[PE)  
bYr*rEcA  
} X,}(MW  
/** Q!r` G  
* @param data 9|m:2["|?  
* @param i jVqpokWH  
* @param j /<"ok;Pu7  
* @return K{ntl-D&y  
*/ wEQZ9?\  
private int partition(int[] data, int l, int r,int pivot) { msQ?V&+<  
do{ LG??Q+`l  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); xl@~K^c]  
SortUtil.swap(data,l,r); bL5u;iy)  
} dk0} q6~  
while(l SortUtil.swap(data,l,r); {vQ:4O!:  
return l; 'LR|DS[Ne  
} F 1l8jB\  
ClNuO  
} QZuKM'D+  
\m=k~Cf:f  
改进后的快速排序: ,Kt51vGi  
U/_hH*N"!  
package org.rut.util.algorithm.support; xtK\-[n  
N*)O_Ki  
import org.rut.util.algorithm.SortUtil; }i^$ li@  
`Q[NrOqe"  
/** +zEyCx=8H  
* @author treeroot }T}xVd0  
* @since 2006-2-2 (O& HCT|  
* @version 1.0 !lBK!'0  
*/ ]zn3nhBI  
public class ImprovedQuickSort implements SortUtil.Sort { Ar<!F/  
%AmyT  
private static int MAX_STACK_SIZE=4096; DVDzYR**4  
private static int THRESHOLD=10; $)d34JM  
/* (non-Javadoc) ~.tYYX<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R@U4Ae{+  
*/ o'8nQ Tao  
public void sort(int[] data) {  R*r"};  
int[] stack=new int[MAX_STACK_SIZE]; Pc<0kQg  
\s!x;nw[  
int top=-1; pF(6M3>IN  
int pivot; #$F*.vQSs+  
int pivotIndex,l,r; kdaq_O:s  
)KGz -!1c  
stack[++top]=0; 1MmEP  
stack[++top]=data.length-1; Qj$w7*U  
0E)M6 jJ  
while(top>0){ nj1PR`AE  
int j=stack[top--]; ,H1K sN  
int i=stack[top--]; }F|B'[wn  
/U`p|M;  
pivotIndex=(i+j)/2; dnh~An 9  
pivot=data[pivotIndex]; fB]NEx|o~  
}Kn l  
SortUtil.swap(data,pivotIndex,j); 7k00lKA\w  
{qOqtkj  
file://partition /Z[HU{4  
l=i-1; c e; zn\  
r=j; :zNNtv iA  
do{ 9'@G7*Yn  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cIcu=U  
SortUtil.swap(data,l,r); Ul}<@d9: B  
} 6;wKL?snO  
while(l SortUtil.swap(data,l,r); T\bpeky~  
SortUtil.swap(data,l,j); 2'-84  
5>ktr)]  
if((l-i)>THRESHOLD){ F!p;]B  
stack[++top]=i; cDK)zD  
stack[++top]=l-1; ?Iq{6O>D.  
} uBxoMxWm  
if((j-l)>THRESHOLD){ \ FJ ae  
stack[++top]=l+1; c _!!DEe7  
stack[++top]=j; 6Nt/>[  
} *||Q_tlz  
z7+>G/o  
} 4YR{ *  
file://new InsertSort().sort(data); N Hn #c3o  
insertSort(data); _dmG#_1  
} 96P&+  
/** NEvNj  
* @param data MSRk|0Mcr  
*/ yvnDS"0<  
private void insertSort(int[] data) { $PAAmaigi  
int temp; !Ce!D0Tx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _"*s x-  
} UtQCTNjC{  
} zx*D)i5-  
} y,bD i9*|  
vVrM[0*c  
} {m@tt{%  
o8v,17 8  
归并排序: _pDfPLlY&  
dCo3VF"u  
package org.rut.util.algorithm.support; U3` ?Z`i(  
Eggu-i(rD  
import org.rut.util.algorithm.SortUtil; 1 -C~C]&  
Ob}XeN(L3  
/** L u'<4 R  
* @author treeroot @#$(Cs*{]  
* @since 2006-2-2 p1K]m>Y{?  
* @version 1.0 4nGt*0Er  
*/ Uw!d;YQm  
public class MergeSort implements SortUtil.Sort{ s|`wi}"x  
6> z{xYat  
/* (non-Javadoc) VR\}*@pNp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M"bG(a(6:  
*/ e`q*'u1?  
public void sort(int[] data) { vU]n0)<KB  
int[] temp=new int[data.length]; @LSh=o+  
mergeSort(data,temp,0,data.length-1); =\oL'>q  
} #dD0vYT&od  
%QEyvl4  
private void mergeSort(int[] data,int[] temp,int l,int r){ L]u^$=rI  
int mid=(l+r)/2; M&<qGV$A  
if(l==r) return ; Px9 K  
mergeSort(data,temp,l,mid);  ; (A-  
mergeSort(data,temp,mid+1,r); scYqU7$%T  
for(int i=l;i<=r;i++){ 8R:Glif  
temp=data; O0s!3hKu  
} y n_.  
int i1=l; j>uu3ADd2  
int i2=mid+1; M_ >kefr  
for(int cur=l;cur<=r;cur++){ >/lB%<$/  
if(i1==mid+1) *'-t_F';  
data[cur]=temp[i2++]; s@{~8cHgU  
else if(i2>r) ^E:-Uy  
data[cur]=temp[i1++]; }`%ks  
else if(temp[i1] data[cur]=temp[i1++]; 57 Bx-  
else K=nDC.  
data[cur]=temp[i2++]; fOME&$=O  
} 3HW&\:q5'M  
} DHv86TvJt  
'W>y v  
} <RZqs  
}L&LtW{X  
改进后的归并排序: 3bR%#G%  
SbzJeaZv  
package org.rut.util.algorithm.support; o4J@M{xb_  
nc\2A>f`  
import org.rut.util.algorithm.SortUtil; 0:<Y@#L  
.Eb]}8/}E  
/** ~PpDrJ; Va  
* @author treeroot 4*Gv0#dga  
* @since 2006-2-2 I%GQ3D"=  
* @version 1.0 j"aY\cLr t  
*/ )tnbl"0  
public class ImprovedMergeSort implements SortUtil.Sort { 4y?n62N8$  
C/#pK2xY  
private static final int THRESHOLD = 10; c:&8B/  
\7>*ULP  
/* NO@`*:.^Y  
* (non-Javadoc) tf|;'Nc6  
* xkax  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i3Bpim.  
*/ DwZRx@  
public void sort(int[] data) { URg;e M#  
int[] temp=new int[data.length]; :#35mBe}k  
mergeSort(data,temp,0,data.length-1); &;)B qqXc  
} K~I?i/P=z  
>]xW{71F@  
private void mergeSort(int[] data, int[] temp, int l, int r) { `]]<.>R  
int i, j, k; Y6Cm PxOQ  
int mid = (l + r) / 2; TI/RJF b  
if (l == r) &v t)7[  
return; HGh -rEh  
if ((mid - l) >= THRESHOLD) H{,1-&>|  
mergeSort(data, temp, l, mid); "DfjUk  
else (V\N1T,f  
insertSort(data, l, mid - l + 1); P}UxA!  
if ((r - mid) > THRESHOLD) H9_iTGBQ  
mergeSort(data, temp, mid + 1, r); 2f@Cy+W'[  
else m'"H1~BW  
insertSort(data, mid + 1, r - mid); l>`66~+s,`  
}^$1<GT  
for (i = l; i <= mid; i++) { 79@CO6  
temp = data; B{D4.!a  
} a:`<=^:4,  
for (j = 1; j <= r - mid; j++) { a$Y{ut0t(  
temp[r - j + 1] = data[j + mid]; T *PEUq  
} dcD#!v\0  
int a = temp[l]; kWVk^ ,  
int b = temp[r]; iLNUydiS  
for (i = l, j = r, k = l; k <= r; k++) { [ }Tb2|  
if (a < b) { b1jDbiH&  
data[k] = temp[i++]; k ,+,,W  
a = temp; PnInsf%;  
} else { q5=,\S3=  
data[k] = temp[j--]; ]1Wxa?  
b = temp[j]; zrG  
} VPuR4 p.  
} CfP-oFHoQ  
} 3S]Q IZ1  
%.r \P@7/Q  
/** p9u*l  
* @param data A%HIfSzQBS  
* @param l $p4e8j[EJ  
* @param i k'H[aYMA  
*/ 6kLy!QS  
private void insertSort(int[] data, int start, int len) { /j}Tv.'d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +Ln^<!P  
} GD]epr%V  
} ".$kOH_:  
} 'j, ([  
} 0XCAnMVo  
6QbDU[  
堆排序: LjE3|+pJ  
G?=&\fg_:  
package org.rut.util.algorithm.support; jll:Rh(b  
,>7dIJqzw  
import org.rut.util.algorithm.SortUtil; "0[`U(/  
:r hB=  
/** <I tS_/z  
* @author treeroot f_[dFKoX  
* @since 2006-2-2 u/6if9B  
* @version 1.0 9N)I\lcY  
*/ %_4#WI  
public class HeapSort implements SortUtil.Sort{ kk6 !krZ  
M!Ao!D[  
/* (non-Javadoc) G dNhEv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rf4f'cUa  
*/ y&5 O)  
public void sort(int[] data) { cnQ2/ZZp~  
MaxHeap h=new MaxHeap(); 3~Fag1Hp  
h.init(data); Fj~suZ`  
for(int i=0;i h.remove(); 1G5AL2  
System.arraycopy(h.queue,1,data,0,data.length); G$V=\60a-  
} `x#S. b  
.24z+|j  
private static class MaxHeap{ av|T|J/(  
hk:>*B}  
void init(int[] data){ sL~4 ~178  
this.queue=new int[data.length+1]; !E?+1WDS0  
for(int i=0;i queue[++size]=data; E>tHKNyVTp  
fixUp(size); JfSe; v  
} zQ{bMj<S  
} Wq<oP  
F I[BZZW  
private int size=0; QY&c=bWAX"  
@W/k}<07  
private int[] queue; p|A ?F0  
JN+7o h]u  
public int get() { p<L{e~{!7f  
return queue[1]; l~o!(rpX  
} ?2~fvMWu  
[1kQ-Ko`  
public void remove() { 0>td[f  
SortUtil.swap(queue,1,size--); XWS]4MB+vm  
fixDown(1); |TM n  
} 'q$Y m0nL  
file://fixdown MJ?t{=  
private void fixDown(int k) { vbeE}7 *2  
int j; jIe /X]  
while ((j = k << 1) <= size) { ~ E6e~  
if (j < size %26amp;%26amp; queue[j] j++; y.D+M$f  
if (queue[k]>queue[j]) file://不用交换 NWFh<  
break; z=U+FHdh/-  
SortUtil.swap(queue,j,k); hIV]ZYbH  
k = j; 6JZ>&HA  
} E9j<+Ik  
} -_5Dk'R#`  
private void fixUp(int k) { ZM-P  
while (k > 1) { :2S?|7U4  
int j = k >> 1; L+%kibnY'  
if (queue[j]>queue[k]) Os$E,4,py  
break; kOD=H-vSi  
SortUtil.swap(queue,j,k); 8} :$=n4&  
k = j; Y0|){&PCt  
} iY07lvG<  
} C/Z#NP~ *  
;BH.,{*@B  
} .G\](%  
w ods   
} /KOI%x  
u_' -vZ_  
SortUtil: t*H2;|zn_  
y@I 9>}"y  
package org.rut.util.algorithm; ):>?N`{V  
k6ry"W3  
import org.rut.util.algorithm.support.BubbleSort; YAT@xZs-  
import org.rut.util.algorithm.support.HeapSort;  mih}?oi  
import org.rut.util.algorithm.support.ImprovedMergeSort; )2ShoFF  
import org.rut.util.algorithm.support.ImprovedQuickSort; v5a\}S<(  
import org.rut.util.algorithm.support.InsertSort; Ly8=SIZ   
import org.rut.util.algorithm.support.MergeSort; bHRn}K+<}c  
import org.rut.util.algorithm.support.QuickSort; xJ{r9~  
import org.rut.util.algorithm.support.SelectionSort;  W;7$Dq:  
import org.rut.util.algorithm.support.ShellSort; mwLf)xt0'  
96~y\X@x  
/** LJPJENtFIs  
* @author treeroot "z Y~*3d  
* @since 2006-2-2 (BPp2^  
* @version 1.0 +%\Ci!%b  
*/ CqC )H7A  
public class SortUtil { $ eI cCLF  
public final static int INSERT = 1; K)>F03=uE  
public final static int BUBBLE = 2; K<5yjG8&  
public final static int SELECTION = 3; X/:V{2  
public final static int SHELL = 4; &}e>JgBe0  
public final static int QUICK = 5; ,NZllnW  
public final static int IMPROVED_QUICK = 6; ANBuX6q  
public final static int MERGE = 7; EIQ3vOq6  
public final static int IMPROVED_MERGE = 8; fiWN^sTM  
public final static int HEAP = 9; X [dfms;H  
;-~E !_$  
public static void sort(int[] data) { ohKoX$|p~  
sort(data, IMPROVED_QUICK); JYw?  
} _"Ym]y28li  
private static String[] name={ DKfpap}8u  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5|~g2Zz{;  
}; qqZ4K:oC,  
fTPm Fb  
private static Sort[] impl=new Sort[]{ >Z_;ZMu)  
new InsertSort(), tkk8b6%h?p  
new BubbleSort(), o"X..m<  
new SelectionSort(), pp(09y`]  
new ShellSort(), =Mwuhk|*  
new QuickSort(), q:)PfP+  
new ImprovedQuickSort(), KZ[TW,Gw  
new MergeSort(), |s/N ?/qi  
new ImprovedMergeSort(), Nkj$6(N=zJ  
new HeapSort() 2! ,ndLA  
}; 9Jh&C5\\  
0~BaQ, A @  
public static String toString(int algorithm){ 7O*Sg2B  
return name[algorithm-1]; ?sdSi--  
} tDL.+6/  
qypF}Pw  
public static void sort(int[] data, int algorithm) { cKkH*0B5  
impl[algorithm-1].sort(data); WZ6{9/%:  
} SS%Bde&<{  
]N]Fb3  
public static interface Sort { 9FSa=<0wE  
public void sort(int[] data); mB>0$l y  
} 9HFEp-"  
e< @$(w  
public static void swap(int[] data, int i, int j) { KPz0;2}  
int temp = data; 6T4DuF   
data = data[j]; "Y:>^F;  
data[j] = temp; &Wa3/mWK  
} ; k.@=  
} ui)mYR[8X  
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