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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。 h]zx7zt-  
插入排序: [S<DdTY9hZ  
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package org.rut.util.algorithm.support; }`h}h<B(  
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import org.rut.util.algorithm.SortUtil; A+ f{j  
/** {`3;Pd`  
* @author treeroot {?j|]j  
* @since 2006-2-2 G;^iwxzhO  
* @version 1.0 4 bJ3uIP#  
*/ WUHx0I  
public class InsertSort implements SortUtil.Sort{ P, Vq/Tt  
@E==~ b  
/* (non-Javadoc) opIcSm&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d?S<h`{x   
*/ ~pF'Qw" z|  
public void sort(int[] data) { $[>wJXj3R  
int temp; wIY#TBu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DL~LSh  
} r1=Zoxc=w  
} Vl'=92t  
} HML6<U-eS  
Tok"-$`N  
} :}GxJT4  
dyx 4_!fO  
冒泡排序: i>rn!?b  
$>BP}V33  
package org.rut.util.algorithm.support; [vrM,?X  
{CdQ)|  
import org.rut.util.algorithm.SortUtil; \!x~FVA  
dG2k4 O  
/** xf% _HMKc  
* @author treeroot db -h=L|  
* @since 2006-2-2 ^ ~'&K e  
* @version 1.0 _)XQb1]  
*/ o<cg9  
public class BubbleSort implements SortUtil.Sort{ V"K-aO&  
mSdByT+dG  
/* (non-Javadoc) D<U^FT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @G,pM: t  
*/ _UI*W&*  
public void sort(int[] data) { =HapCmrx8  
int temp; `1 A,sXfa  
for(int i=0;i for(int j=data.length-1;j>i;j--){ o^+2%S`]  
if(data[j] SortUtil.swap(data,j,j-1); <;kcy :s  
} ",O |uL  
} P|j|0o,8p  
} H{ M7_1T  
} )cP &c=  
}$%j}F{  
} [`J91=  
,=>Ws:j  
选择排序: 2~`vV'K  
v'RpsCov  
package org.rut.util.algorithm.support; 4*Uzomb?q  
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import org.rut.util.algorithm.SortUtil; LuW>8K\  
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/** Eqizx~eqq  
* @author treeroot p>oC.[:4a  
* @since 2006-2-2 C GN=kQ  
* @version 1.0 }_mVXjF  
*/ Ah 2*7@U  
public class SelectionSort implements SortUtil.Sort { U_Jchi,!  
k I?+\k\V`  
/* [x%[N)U3  
* (non-Javadoc) 6;:z?Q  
* t| PQ4g<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z`}z7e'>  
*/ ^ YOC HXg  
public void sort(int[] data) { XQ3"+M_KG  
int temp; 22OfbwCb  
for (int i = 0; i < data.length; i++) { jFDVd;#CS  
int lowIndex = i; &2,3R}B/  
for (int j = data.length - 1; j > i; j--) { Z)&!ZlM  
if (data[j] < data[lowIndex]) { 8KyRD1 (-R  
lowIndex = j; u4#YZOiY)A  
} Kpg?' !I  
} HKL/ D  
SortUtil.swap(data,i,lowIndex); 9r. h^  
} Tbp;xv_qo  
} K'Y/0:"*  
;9CbioO  
} c>Tf@A og>  
U)[LKO1  
Shell排序: kzk8b?rOA  
2$OV`qy@?  
package org.rut.util.algorithm.support; 4^Ss\$*  
4Ei8G]O $_  
import org.rut.util.algorithm.SortUtil; x2,;ar\D  
Cag^$nj  
/** XJ!?>)N .  
* @author treeroot 7@&mGUALO  
* @since 2006-2-2 {'Y()p3kl  
* @version 1.0 O3V.4tp  
*/ O _ C<h  
public class ShellSort implements SortUtil.Sort{ =8v NOvA  
/X]gm\x7s  
/* (non-Javadoc) CNe(]HIOH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GorEHlvVh  
*/ H_ a##z  
public void sort(int[] data) { Yy~xNj5OS  
for(int i=data.length/2;i>2;i/=2){ We++DWp  
for(int j=0;j insertSort(data,j,i); RBz"1hRo`  
} <&^[?FdAa  
} K ton$%Li  
insertSort(data,0,1); &q&~&j'[  
} ?S;z!) H)P  
7H*,HZc@=  
/** 1`1jSx5}.  
* @param data qnHjwMi  
* @param j _&(L{cFx6  
* @param i ^*YoNd_kpN  
*/ L8q#_k  
private void insertSort(int[] data, int start, int inc) { CA1Jjm=  
int temp; 2ql)]Skg6  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ])G| U A.  
} H,W8JNPs  
} H s$HeAp;  
} ZeY|JH1  
rizjH+  
} )3A+Ell`  
q{Gh5zg5O  
快速排序: 7IFZK\V  
[ #ih o(/  
package org.rut.util.algorithm.support; p Hx$  
{\`y)k 7  
import org.rut.util.algorithm.SortUtil; #eN2{G=4+  
AOkG.u-k  
/** }z#M!~  
* @author treeroot HY eCq9S  
* @since 2006-2-2 ps?su`  
* @version 1.0 *3P+K:2lNG  
*/ +=Q:g,kP  
public class QuickSort implements SortUtil.Sort{ qO38vY){  
P3YM4&6XA  
/* (non-Javadoc) 5Ok3y|cEx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q6*i/"mN*  
*/ R!%HQA1U  
public void sort(int[] data) { K2e68GU  
quickSort(data,0,data.length-1); GqNOWK2O  
} %I9f_5BlT8  
private void quickSort(int[] data,int i,int j){ /}2Y-GOU  
int pivotIndex=(i+j)/2; WUjRnzVM  
file://swap T{^P  
SortUtil.swap(data,pivotIndex,j); #AP;GoIf"j  
glc<(V  
int k=partition(data,i-1,j,data[j]); PH&Qw2(Sx  
SortUtil.swap(data,k,j); j!NXNuy:  
if((k-i)>1) quickSort(data,i,k-1); { `Z~T&}~T  
if((j-k)>1) quickSort(data,k+1,j); 7.Z-  
`R xCs`  
} (J.Z+s$:2  
/** fVgN8b|&'  
* @param data {$Uj&/IC  
* @param i j24DL+  
* @param j CbW[_\  
* @return f8SO:ihXL  
*/ ]P#W\LZp  
private int partition(int[] data, int l, int r,int pivot) { MRXw)NAw  
do{ p-_9I7?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); h,B4Tg'  
SortUtil.swap(data,l,r); %FM26^  
} T@{ab1KV  
while(l SortUtil.swap(data,l,r); R&6@*Nn  
return l; P7zUf  
} GDC@s<[k  
N%>h>HJ  
} 1$.svR  
3) d }3w {  
改进后的快速排序: m,t{D, 2  
7FPSBvU#/  
package org.rut.util.algorithm.support; 0{%@"Fb0O  
!4D?X\~"%  
import org.rut.util.algorithm.SortUtil; ?wlRHVZ  
AZ4?N.X?  
/** G/FDD{y  
* @author treeroot _EP]|DTfr  
* @since 2006-2-2 ?D2a"a$^  
* @version 1.0 %Vltc4QU  
*/ QICxSk  
public class ImprovedQuickSort implements SortUtil.Sort { t3?I4HQ  
D iOd!8Y  
private static int MAX_STACK_SIZE=4096; (0#$%US\  
private static int THRESHOLD=10; jQ'g'c!  
/* (non-Javadoc) Q|{b8K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LTzdg >\oJ  
*/ 0wNlt#G;{  
public void sort(int[] data) { YaSBIq{z  
int[] stack=new int[MAX_STACK_SIZE]; ^7? WR?!  
'dh{q`#0  
int top=-1; 13Z,;YW  
int pivot; 60{DR >S  
int pivotIndex,l,r; T]z(>{  
UCmy$aW  
stack[++top]=0; d9U)O6=  
stack[++top]=data.length-1; e21J9e6z   
!*~QB4\2b  
while(top>0){ F.aG7  
int j=stack[top--]; -N^Ah_9ek  
int i=stack[top--]; Q>+rjN;  
^yc8is'`  
pivotIndex=(i+j)/2; 1;c>#20  
pivot=data[pivotIndex]; i~v[3e9y7  
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SortUtil.swap(data,pivotIndex,j); `5h^!="  
@ewi96  
file://partition U7jDm>I  
l=i-1; 7bO>[RQB  
r=j; 5vR])T/S0  
do{ 'v0rnIsI?  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); tF-l=ph}`  
SortUtil.swap(data,l,r); pGR3  
} ^&mrY[;S  
while(l SortUtil.swap(data,l,r); @J 5TDq @  
SortUtil.swap(data,l,j); tCO?<QBE  
_6c/,a8;*J  
if((l-i)>THRESHOLD){ i?M-~EKu  
stack[++top]=i; f'5 6IT  
stack[++top]=l-1; j} /).O  
} =8`KGeP$  
if((j-l)>THRESHOLD){ /*BU5  
stack[++top]=l+1; x`C"Z7t  
stack[++top]=j; ,:J[|9  
} XgnNYy6W  
qyVARy  
} `^^t#sT   
file://new InsertSort().sort(data); `p* 43nV  
insertSort(data); XY? Cl  
} 3o>JJJ=]  
/** u tkdL4G}'  
* @param data z^tzP~nI  
*/ fDW:|%{Y,  
private void insertSort(int[] data) { -?1R l:rM  
int temp; rA?< \*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZQKo ]Kdr  
} v,QvCozOz  
} J;wBS w%1  
} }vY^e OK.  
P/WGB~NH  
} wY%t# [T3  
/E\04Bs  
归并排序: l8+)Xk>   
W(Sni[c{  
package org.rut.util.algorithm.support; . IY@Q  
DOFW"SpE  
import org.rut.util.algorithm.SortUtil; sk 8DW  
.nVY" C&  
/** z<fd!g+^  
* @author treeroot ?#&[1.= u  
* @since 2006-2-2 F[jqJzCz  
* @version 1.0 mM?,e7Xhs  
*/ [!3cWJCt  
public class MergeSort implements SortUtil.Sort{ 3!sZA?q  
M,ybj5:6  
/* (non-Javadoc) _](y<O^9yO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8mdVh\i!Kf  
*/ ?,v& o>*  
public void sort(int[] data) { jP}Ry=V/  
int[] temp=new int[data.length]; jxm#4  
mergeSort(data,temp,0,data.length-1); :~W(#T,$E  
} ^q& Rl\  
%WR"qd&HSh  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,/V~T<FI  
int mid=(l+r)/2; f9Xa}*  
if(l==r) return ; q\jq9)  
mergeSort(data,temp,l,mid); $>_`.*I/  
mergeSort(data,temp,mid+1,r); SQU@JKi; g  
for(int i=l;i<=r;i++){ '?.']U,: $  
temp=data; H l(W'>*oL  
} nwfu@h0G  
int i1=l; %qeNC\6N  
int i2=mid+1; WnOYU9 ;%  
for(int cur=l;cur<=r;cur++){ :?z @T[-  
if(i1==mid+1) bcu Uej:  
data[cur]=temp[i2++]; $}S0LZ_H  
else if(i2>r) G[>CBh5  
data[cur]=temp[i1++]; J~`!@!  
else if(temp[i1] data[cur]=temp[i1++]; D_ej%QtB@  
else v;?W|kJ.u  
data[cur]=temp[i2++]; uuh._H}-  
} ?kV_!2U)'K  
} v5?)J91  
lF46W  
} /?Y4C)G  
"9Q_lVI|Q  
改进后的归并排序: NaQ~iY?  
Dh#5-Kf%  
package org.rut.util.algorithm.support; wpQp1){%Q  
M1 o@v0  
import org.rut.util.algorithm.SortUtil; :~s*yznf  
-cn`D2RP  
/** B2_fCSlg  
* @author treeroot ?l @=}WN  
* @since 2006-2-2 `)w=@9B)"  
* @version 1.0 Abmi=]\bx  
*/ U_Mag(^-  
public class ImprovedMergeSort implements SortUtil.Sort { *YQXxIIq  
`W1TqA  
private static final int THRESHOLD = 10; OQg}E@LZ  
YReI|{O$c  
/* w_QWTD 0  
* (non-Javadoc) ,PKUgL}w  
* QGErQ +l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # M3d=  
*/ D6yE/QeK4  
public void sort(int[] data) { H#nJWe_9A  
int[] temp=new int[data.length]; ||7x51-yj  
mergeSort(data,temp,0,data.length-1); c5Kc iTD^  
} j#p3<V S4  
$|!3ks  
private void mergeSort(int[] data, int[] temp, int l, int r) { .ubZ  
int i, j, k; *9F{+)A  
int mid = (l + r) / 2; K^b'<} $|p  
if (l == r) *Kq;xM6Ck  
return; &f)pU>Di  
if ((mid - l) >= THRESHOLD) j/ARTaO1]"  
mergeSort(data, temp, l, mid); 4VsttT  
else sVnpO$  
insertSort(data, l, mid - l + 1); tgeXX1Eq!  
if ((r - mid) > THRESHOLD) v806f8  
mergeSort(data, temp, mid + 1, r); ):L0{W{  
else 'auYmX  
insertSort(data, mid + 1, r - mid); AuBBSk8($  
o> 1+m  
for (i = l; i <= mid; i++) { k&u5`F  
temp = data; H:16aaMn(  
} LTb#1JC  
for (j = 1; j <= r - mid; j++) { |NFDrm  
temp[r - j + 1] = data[j + mid]; W<~u0AyO 3  
}  Qk.[#  
int a = temp[l]; a72L%oJ   
int b = temp[r]; X:(t,g*7  
for (i = l, j = r, k = l; k <= r; k++) { 2 jxh7\zE  
if (a < b) { u*7>0o|H:  
data[k] = temp[i++]; rPifiLl A>  
a = temp; ZJjm r,1  
} else { p%\&M bA  
data[k] = temp[j--]; eQ =6< ^KZ  
b = temp[j]; %=vU Z4  
} j#H&~f  
} 97}l`z;Z  
} "Z-YZ>2  
0v3 8LBH)  
/** @Ps1.  
* @param data 'H1k  
* @param l 0A75)T=lQ  
* @param i =cx_3gCr{  
*/ ng[LSB*57Y  
private void insertSort(int[] data, int start, int len) {  S^5Qhv  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0(A&m ,  
} vC^n_  
} lBG"COu  
} ]L\]Ll;  
} m9$lOk4/  
1#vi]CX  
堆排序: :l {%H^;1  
O F?o  
package org.rut.util.algorithm.support; p,mKgL63  
W3B:)<f  
import org.rut.util.algorithm.SortUtil; *adwCiB  
6eK7Jv\K  
/** 9u_D@A"aC`  
* @author treeroot Qf@ha  
* @since 2006-2-2 +,4u1`c|$  
* @version 1.0 >Qs{LEsLb  
*/ }I~)o!N%7  
public class HeapSort implements SortUtil.Sort{ Es1T{<G|w  
_6\"U5*Y  
/* (non-Javadoc) rJCu6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zm=|#f  
*/ 'RIx}vPf  
public void sort(int[] data) { wG&rkg";#  
MaxHeap h=new MaxHeap(); )H*BTfmt  
h.init(data); 7@!3.u1B  
for(int i=0;i h.remove(); 7$JE+gL/7  
System.arraycopy(h.queue,1,data,0,data.length); 6LzN#g  
} 8qv>C)~~`  
VO7&<Y}{x  
private static class MaxHeap{ \|R\pS}4  
qo:t"x^  
void init(int[] data){ !/E N  
this.queue=new int[data.length+1]; <e$%m(]  
for(int i=0;i queue[++size]=data; VP6_}9:9   
fixUp(size); -nGLmMvd  
} TA!6|)BUW  
} `s_k+ g  
$8NM[R.8^4  
private int size=0; m/aA q8  
6JE_rAab  
private int[] queue; wl%I(Cw{]  
_16r8r$V  
public int get() { lN[#+n  
return queue[1]; )xYGJq4  
} 8:"s3xaO3  
vH>s2\V"  
public void remove() { k$ w#:Sx  
SortUtil.swap(queue,1,size--); !+3nlG4cw  
fixDown(1); mC!^`y)  
} C&RZdh,$  
file://fixdown 4siq  
private void fixDown(int k) { CWS]821;  
int j; XOPiwrg%p  
while ((j = k << 1) <= size) { )W!\D/C+  
if (j < size %26amp;%26amp; queue[j] j++; +Sg+% 8T  
if (queue[k]>queue[j]) file://不用交换 kwrM3nq  
break; RtF!(gd  
SortUtil.swap(queue,j,k); Lv:;}  
k = j; \kC'y9k  
} NsL!AAN[V  
} QzV%m0  
private void fixUp(int k) { (kSb74*g  
while (k > 1) { P +Sgbtc  
int j = k >> 1; >xIb|Yp)&  
if (queue[j]>queue[k]) #e&LyYx4  
break; a*!9RQ  
SortUtil.swap(queue,j,k); eY3<LVAX  
k = j; 4'H)h'#C  
} \}; 4rm}V  
} \r- v]]_<d  
O]Q8&(  
} G( #EW+  
vW5>{  
} oC(.u?  
] {=qdgJ  
SortUtil: <Mf(2`T  
{$v>3FG  
package org.rut.util.algorithm; ?cgb3^R'  
29f4[V X  
import org.rut.util.algorithm.support.BubbleSort; /^,/o  
import org.rut.util.algorithm.support.HeapSort; 4JGU`L:~  
import org.rut.util.algorithm.support.ImprovedMergeSort; )D ':bWP  
import org.rut.util.algorithm.support.ImprovedQuickSort; h~k+!\  
import org.rut.util.algorithm.support.InsertSort; Ol*|J  
import org.rut.util.algorithm.support.MergeSort; -@/!u9l  
import org.rut.util.algorithm.support.QuickSort; V#V<Kz  
import org.rut.util.algorithm.support.SelectionSort; EP8R[Q0_"  
import org.rut.util.algorithm.support.ShellSort; kTo{W]9]  
10r9sR  
/** [ejl #'*5  
* @author treeroot i/F ].Sag  
* @since 2006-2-2 I =nvL  
* @version 1.0 XF99h&;9  
*/ Z+Ppd=||,  
public class SortUtil { uar[D|DcD"  
public final static int INSERT = 1; -FQS5Zb.!  
public final static int BUBBLE = 2; 4,:)%KB"V  
public final static int SELECTION = 3; \w2X.2b.F  
public final static int SHELL = 4; {e83 A /{  
public final static int QUICK = 5; 4m6%HV8{}[  
public final static int IMPROVED_QUICK = 6; ' y_2"  
public final static int MERGE = 7; p\r V6+  
public final static int IMPROVED_MERGE = 8; W";Po)YC  
public final static int HEAP = 9; WRN}>]NgQ  
GD#W=O  
public static void sort(int[] data) { `qa>6`\  
sort(data, IMPROVED_QUICK); {0Ej *%  
} )!d_Td\-  
private static String[] name={ hr/|Fn+kA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" | @p  
}; pe-%`1iC0>  
XI;F=r}'  
private static Sort[] impl=new Sort[]{ RzqU`<//  
new InsertSort(), =}[m_rp&  
new BubbleSort(), wO"ezQ  
new SelectionSort(), eLk:">kj  
new ShellSort(), }~! D]/B  
new QuickSort(), vf['$um  
new ImprovedQuickSort(), K2-nP2Go?  
new MergeSort(), ". wG~H  
new ImprovedMergeSort(), TXfG@4~kC  
new HeapSort() 9,0}}3J  
}; 5!7vD|6  
}xytV5a^  
public static String toString(int algorithm){ 61`tQFx,  
return name[algorithm-1]; I9kBe}g3  
} a>Xq   
SW=%>XKkh  
public static void sort(int[] data, int algorithm) { kI/%|L%6D  
impl[algorithm-1].sort(data); FO?I}G22  
} <u2iXH5w  
bE2{^5iG  
public static interface Sort { A9M/n^61  
public void sort(int[] data); RJLhR_t7n  
} jN2Xoh9  
a}7P:e*u  
public static void swap(int[] data, int i, int j) { r }Nq"s<  
int temp = data; wI2fCq(a0  
data = data[j]; `}*jjnr"  
data[j] = temp; 1DM$FG_Z-  
} ^%Fn|U\u  
} mcSZ1d~,(  
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