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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。 Bu%TTbnz_G  
插入排序: ZvQ~K(3  
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package org.rut.util.algorithm.support; F<W`zQ46  
:6N'%LKK  
import org.rut.util.algorithm.SortUtil; h'QEwW  
/** y<r@zb9  
* @author treeroot B#zu< z  
* @since 2006-2-2 EZ  N38T  
* @version 1.0 Qp]-:b  
*/ -W6r.E$mC  
public class InsertSort implements SortUtil.Sort{ EWU(Al T  
_^Ds[VAgA  
/* (non-Javadoc) (] Zyk, [  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) do-mkvk  
*/ oBBL7/L  
public void sort(int[] data) { f@G3,u!]i  
int temp; <'Ppu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :J 7p=sX  
} ?PpGBm2f*  
} Kuj*U'ed7t  
} 7 3 Oo;  
E/<5JhI9~  
} :o2^?k8k&#  
bVLuv`A/  
冒泡排序: ~|FKl%  
K3CTxU(  
package org.rut.util.algorithm.support; ?zS t  
Nt>wzPd)  
import org.rut.util.algorithm.SortUtil; (Lp$EC&%6  
KS9 e V  
/** rM{3]v{~  
* @author treeroot v/1&V+"^kd  
* @since 2006-2-2 ^GS,4[)H  
* @version 1.0 Boi?Bt  
*/ %T_4n^beFQ  
public class BubbleSort implements SortUtil.Sort{ u'm[wjCj c  
?E6*Ef  
/* (non-Javadoc) N9|v%-_?)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ``Yw-|&:Ae  
*/ ]<Ugg  
public void sort(int[] data) { Q5!"tF p  
int temp; @2Spfj_e  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +W xZB  
if(data[j] SortUtil.swap(data,j,j-1); =P,h5J  
} XBTtfl &  
} {H\(H _X  
} )/B' ODa  
} i&%/]Nq  
g_T[m*  
} *.+Eg$'~V  
dx<KZR$!V  
选择排序: ME9jN{ le  
[6$n  
package org.rut.util.algorithm.support; t9Sog~:'  
 Z>O2  
import org.rut.util.algorithm.SortUtil; xn=/SIS  
O<H5W|cM  
/** <<ze84 E  
* @author treeroot K~U5jp c  
* @since 2006-2-2 xM#+jI  
* @version 1.0  GD]yP..  
*/ C}7 c:4c  
public class SelectionSort implements SortUtil.Sort { qMHI-h_A  
z. 6-D  
/* A.D@21py  
* (non-Javadoc) gGtl*9a=  
* ]V`L\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2$Fy?08q  
*/ nw)yK%`;M  
public void sort(int[] data) { U}=o3u  
int temp; M^e;WY@ D  
for (int i = 0; i < data.length; i++) { P:p@Iep  
int lowIndex = i; &4m\``//9  
for (int j = data.length - 1; j > i; j--) { pyf/%9R:d  
if (data[j] < data[lowIndex]) { |z5`h  
lowIndex = j; O.9r'n4f  
} %GY U$aA  
} figCeJ!W4  
SortUtil.swap(data,i,lowIndex); M?3N h;  
} >~D-\,d|f  
} "IvFkS=*Q  
p>O>^R  
} | M|5Nc>W  
;QiSz=DyA  
Shell排序: FA+'E  
{hE\ECT-  
package org.rut.util.algorithm.support; =/|2f; Q  
S(c&XJR  
import org.rut.util.algorithm.SortUtil; GJ3@".+6  
pKxq\U  
/** t3w:!' Ato  
* @author treeroot 5Y#W$Fx($R  
* @since 2006-2-2 [Ju5O[o  
* @version 1.0 o-m9}pV  
*/ 5 wT e?  
public class ShellSort implements SortUtil.Sort{ .5'_5>tkv  
LXGlG  
/* (non-Javadoc) _>k&,p]y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lwzk<+>w^  
*/ +im>|  
public void sort(int[] data) { ZbZCW:8>k  
for(int i=data.length/2;i>2;i/=2){ zS6oz=  
for(int j=0;j insertSort(data,j,i); HZ+l){u  
} -/7[\S  
} XITh_S4fs=  
insertSort(data,0,1); SGp}(j>  
} Q)$RE{*-  
15 /lX  
/** \QZ~w_  
* @param data qrK\f  
* @param j y\M Kd[G7  
* @param i "P@jr{zvMd  
*/ x9U(,x6r  
private void insertSort(int[] data, int start, int inc) { -D4"uoN.  
int temp; \d,wcL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9?IvSv}z  
} |_Tp:][mf  
} sgc pH  
} E;m-^dxc  
*Bse3%-v  
} }1sFddGVt  
!97k  
快速排序: TrEo5H;  
uE]kv  
package org.rut.util.algorithm.support; .wb[cCUQ  
bS!4vc1`2  
import org.rut.util.algorithm.SortUtil; )5O E~}>  
J$/'nL<{^  
/** SdJGhU  
* @author treeroot 9 :ubPqt  
* @since 2006-2-2 ! /^Jma7n  
* @version 1.0 EV$$wrohQ`  
*/ jnu!a.H  
public class QuickSort implements SortUtil.Sort{ j -R9=vB2  
=u.jZ*u]WT  
/* (non-Javadoc) \a .^5g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K4{1}bU{>  
*/ zIeJ[J@  
public void sort(int[] data) { (9phRo)>  
quickSort(data,0,data.length-1); u@{z xYn  
} ]'[(MH"  
private void quickSort(int[] data,int i,int j){ 3rUuRsXn  
int pivotIndex=(i+j)/2; )qL UHE=  
file://swap mk'$ |2O  
SortUtil.swap(data,pivotIndex,j); g9XAUZe  
/ta5d;@  
int k=partition(data,i-1,j,data[j]); /|HVp  
SortUtil.swap(data,k,j); z87_/(nu  
if((k-i)>1) quickSort(data,i,k-1);  u51%~  
if((j-k)>1) quickSort(data,k+1,j); qTA,rr#p0  
DA(ur'D  
} /p PSo  
/** TJhzyJ"t  
* @param data xaSg'8-  
* @param i .Z0$KQ'iy  
* @param j a*g7uaoP  
* @return {j!jm5  
*/ ?e. Ge0&  
private int partition(int[] data, int l, int r,int pivot) { O #  
do{ 43HZ)3!me  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &l0-0 T>  
SortUtil.swap(data,l,r); FB\lUO)U\c  
} #j?SdQ  
while(l SortUtil.swap(data,l,r); 0&@pD`K e  
return l; B'kV.3t  
} s;9>YV2at  
Uh tk`2O  
} w9W0j  
K*]^0  
改进后的快速排序: Ne=o+ $.(  
.GM}3(1fX`  
package org.rut.util.algorithm.support; _x&fK$Y)B  
RaBq@r*(  
import org.rut.util.algorithm.SortUtil; 9!kH:Az[p  
xyvG+K&  
/** 4uV,$/  
* @author treeroot ydx-` yg#  
* @since 2006-2-2 O7x'q<PFU  
* @version 1.0 jO9w7u6  
*/ ku&m)'  
public class ImprovedQuickSort implements SortUtil.Sort { 'cpO"d?{  
M< 1rQW'  
private static int MAX_STACK_SIZE=4096; DJGq=*  
private static int THRESHOLD=10; v Wt{kg;  
/* (non-Javadoc) S Y7'S#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l"ZfgJ}W  
*/ 1/l;4~p7'  
public void sort(int[] data) { d ~`_;.z  
int[] stack=new int[MAX_STACK_SIZE]; (X(296<;  
nG+L'SmI  
int top=-1; wRATe 0'  
int pivot; $zR[2{bg  
int pivotIndex,l,r; &AS<2hB  
KXS{@/"-B  
stack[++top]=0; Naqz":%.  
stack[++top]=data.length-1; IdzrQP  
<.N33 7!  
while(top>0){ Y2B ",v"  
int j=stack[top--]; V.f'Cw  
int i=stack[top--]; "92Z"I~1  
=D"H0w <zw  
pivotIndex=(i+j)/2; 6 pQbh*  
pivot=data[pivotIndex]; 2o\GU  
ENEnHu^  
SortUtil.swap(data,pivotIndex,j); pEn3:.l<  
.0eHP  
file://partition cfg_xrW0^  
l=i-1; w{HDCPuS  
r=j; NETji:d  
do{ !6 k{]v  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uINm>$G,5  
SortUtil.swap(data,l,r); } XJZw|n  
} \i +=tGY  
while(l SortUtil.swap(data,l,r); Mb2rHUr  
SortUtil.swap(data,l,j); J(s%"d  
`B4Px|3  
if((l-i)>THRESHOLD){ (_Ld^ ^|  
stack[++top]=i; G3.MS7 J  
stack[++top]=l-1; +TR#  
} yQ3*~d~U|L  
if((j-l)>THRESHOLD){ pR VL}^Rk  
stack[++top]=l+1; >UQ`@GdafR  
stack[++top]=j; KioD/  
} ZYBK'&J4m  
?pLKUAh  
} P!Mz5QZ+  
file://new InsertSort().sort(data); G#~6a%VW  
insertSort(data); ic+tn9f\  
}  1aAYBV<3  
/** ua'dm6",:  
* @param data KT5"/fv  
*/ ?_NhR   
private void insertSort(int[] data) { QCI-YJ&o  
int temp; qZ:--,9+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~ 3HI;  
} z [qO5z~I  
} XP$1CWI  
} -i}@o1o\  
b,7@)sZ*  
} xzGs%01]  
@+S5"W  
归并排序: e?&4;  
l*l(QvN_  
package org.rut.util.algorithm.support; =}12S:Qhj  
TAbC-T.EV  
import org.rut.util.algorithm.SortUtil; tvC7LLNP<  
@Lj28&4:<  
/** (S@H'G"  
* @author treeroot P9wx`x""k  
* @since 2006-2-2 +bj[.  
* @version 1.0 ` _+j+  
*/ ^<@9ph  
public class MergeSort implements SortUtil.Sort{ #Moju  
f y|Ae  
/* (non-Javadoc) 9 J$z/j;X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fYU-pdWPT  
*/ #\&jM -.-  
public void sort(int[] data) { bB^SD] }C  
int[] temp=new int[data.length]; E+65  
mergeSort(data,temp,0,data.length-1); *+E9@r=HF  
} D\:~G}M  
sf|[oD  
private void mergeSort(int[] data,int[] temp,int l,int r){ quB .A7~^=  
int mid=(l+r)/2; .&53WL[D|  
if(l==r) return ; |!\(eLR9>  
mergeSort(data,temp,l,mid); ijYSYX@  
mergeSort(data,temp,mid+1,r); 27;t,Oq}  
for(int i=l;i<=r;i++){ UeVRd  
temp=data; P2nb&lVdu  
} !2('Cq_^  
int i1=l; ~D4%7U"dv  
int i2=mid+1; 0!n6tz lT  
for(int cur=l;cur<=r;cur++){ T/V 5pYl  
if(i1==mid+1) >Ic)RPO9  
data[cur]=temp[i2++]; az(u=}  
else if(i2>r) <%(nF+rQA"  
data[cur]=temp[i1++]; FS%Xq-c  
else if(temp[i1] data[cur]=temp[i1++]; nKFua l3  
else T/%s7!E  
data[cur]=temp[i2++]; 3 *o l  
} C^po*(W6  
} ?PIOuN=  
:VPZGzK4  
} <B;l).[6  
H\f.a R=  
改进后的归并排序: -Kj^ l3w  
[Ng#/QXk{  
package org.rut.util.algorithm.support; o)P'H"Ki  
Y9TaU]7]  
import org.rut.util.algorithm.SortUtil; gE/O29Y  
e+z_Rj%Y;I  
/** G<C[A  
* @author treeroot ]-$0?/`p8  
* @since 2006-2-2 mis cmD  
* @version 1.0 /\-qz$  
*/ k,xY\r$  
public class ImprovedMergeSort implements SortUtil.Sort { _u^ S[  
)g9&fGYf  
private static final int THRESHOLD = 10; i;1aobG  
 R1YRqk  
/* \e5bxc  
* (non-Javadoc) `0tzQ>ZQq  
* TR8<=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hsVf/%  
*/ g/b_\__A  
public void sort(int[] data) { @)>9l&  
int[] temp=new int[data.length]; m<>3GF,5bP  
mergeSort(data,temp,0,data.length-1); blcd]7nK  
} ]7C=.'Y  
IYq)p /  
private void mergeSort(int[] data, int[] temp, int l, int r) { 'IweN  
int i, j, k; (u81p  
int mid = (l + r) / 2; +$:bzo_u  
if (l == r) CT@JNG$<"  
return; .kSx>3  
if ((mid - l) >= THRESHOLD) @N`) Z3P+  
mergeSort(data, temp, l, mid); Y!LcS48X  
else d v@B-l;  
insertSort(data, l, mid - l + 1); g_G'%{T7  
if ((r - mid) > THRESHOLD) 2*6b{}yJH  
mergeSort(data, temp, mid + 1, r); /jQW4eW0  
else y K~;LV  
insertSort(data, mid + 1, r - mid); a%"My;8  
G J=<~S"  
for (i = l; i <= mid; i++) { !5Ko^:+Y  
temp = data; hL#5:~(  
} XV+s 5 C  
for (j = 1; j <= r - mid; j++) { u@\]r 1  
temp[r - j + 1] = data[j + mid]; H gMLh*  
} +53 Tf  
int a = temp[l]; 'W 5r(M4U  
int b = temp[r];  9x/HQ(1  
for (i = l, j = r, k = l; k <= r; k++) { ?Gc9^b B I  
if (a < b) { LlP_`fA  
data[k] = temp[i++]; s+>VqyHgf  
a = temp; U+t|wK  
} else { Gxu&o%x [  
data[k] = temp[j--]; dUOvv/,FZT  
b = temp[j]; kAbRXID  
} [ Y_6PR  
} A.<HOx&#  
} &k+G^ !=s#  
Paz yY   
/** xQX,1NbH5  
* @param data jk2h"):B>  
* @param l $v?+X20  
* @param i 0 !yvcviw  
*/ XJ~_FiB  
private void insertSort(int[] data, int start, int len) { `y; s1nL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  H  
} E~5r8gM,0  
} .L[WvAo  
} F i?2sa  
} L-\-wXg%  
0x!XE|7I  
堆排序: Yhl {'  
3Xgf=yG:M  
package org.rut.util.algorithm.support; ?y82S*sb#  
PDaHY  
import org.rut.util.algorithm.SortUtil; eOa:%{Kj  
:B?XNo  
/** oR>o/$z$)g  
* @author treeroot U7d%*g  
* @since 2006-2-2 |e@9YDZ  
* @version 1.0 J&w%lYiu5  
*/ K^bzZa+a  
public class HeapSort implements SortUtil.Sort{ E]`)  
lwhAF, '$  
/* (non-Javadoc) ru,]!YPJE2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5;5;bBo~  
*/ mAh0xgm  
public void sort(int[] data) { d?(#NP#;  
MaxHeap h=new MaxHeap(); 5inmFT?9Z  
h.init(data); Q.H y"~  
for(int i=0;i h.remove(); nYG$V)iCb  
System.arraycopy(h.queue,1,data,0,data.length); dg/OjiD[P  
} 4Y5Q>2D}  
B RF=TL5Z  
private static class MaxHeap{ ',k0 _n?t  
Xxcv 5.ug  
void init(int[] data){ 3+_? /}<  
this.queue=new int[data.length+1]; }R:eKj  
for(int i=0;i queue[++size]=data; ^& ZlV  
fixUp(size); ab8uY.j  
} *[jG^w0z8~  
} ]Ln2|$R  
y6ntGrZ}$  
private int size=0; ^OKCvdS  
Szrr`.']  
private int[] queue; 8MgoAX,p  
)tGeQXVhbJ  
public int get() { U2z1HIs  
return queue[1]; !0:uM)_k  
} tL(B gku9  
,:UoE  
public void remove() { RWtD81(oC'  
SortUtil.swap(queue,1,size--); Yz;Hu$/  
fixDown(1); WbC|2!  
} Tct8NG  
file://fixdown k L2(M6m  
private void fixDown(int k) { Reca5r1O  
int j; /gh=+;{  
while ((j = k << 1) <= size) { &gxRw l  
if (j < size %26amp;%26amp; queue[j] j++; h')@NnFP 1  
if (queue[k]>queue[j]) file://不用交换 S(Md  
break; < U`lh  
SortUtil.swap(queue,j,k); M7{w7}B0@  
k = j; 8X`iMFa.P  
} :RR<-N5+  
} p%~#~5t,  
private void fixUp(int k) { 8#NtZ  
while (k > 1) { YKq,`7"%  
int j = k >> 1; S'qEBz  
if (queue[j]>queue[k]) )p'ZSXb  
break; TB 9{e!4  
SortUtil.swap(queue,j,k); ,-^Grmr4M  
k = j; O_aZ\28};C  
} AFO g*{1  
} }z6@Z#%q  
;Ut0tm  
} <RY5ZP  
"']I.  
} FI++A`  
S05+G}[$  
SortUtil: BYuF$[3ya&  
4d3]L` f  
package org.rut.util.algorithm; nsFOtOdd  
L A-H  
import org.rut.util.algorithm.support.BubbleSort; |f1 S&b.  
import org.rut.util.algorithm.support.HeapSort; WGFp<R  
import org.rut.util.algorithm.support.ImprovedMergeSort; {pMbkA Q@  
import org.rut.util.algorithm.support.ImprovedQuickSort; aOWW ..|  
import org.rut.util.algorithm.support.InsertSort; j|"#S4IX)F  
import org.rut.util.algorithm.support.MergeSort; |F z/9+I  
import org.rut.util.algorithm.support.QuickSort; fH? e9E4l  
import org.rut.util.algorithm.support.SelectionSort; 5BnO-[3  
import org.rut.util.algorithm.support.ShellSort; ]b!o(5m  
B}_*0D  
/** 0A\OZ^P8  
* @author treeroot xayo{l=uGv  
* @since 2006-2-2 wJM})O%SQ  
* @version 1.0 TUoEk  
*/ 1o\P7P Le  
public class SortUtil { asqbLtQ  
public final static int INSERT = 1; _4F(WCco  
public final static int BUBBLE = 2; wYy=Tl-N  
public final static int SELECTION = 3; *4#)or  
public final static int SHELL = 4; ,.[T]37  
public final static int QUICK = 5; $Kgw6  
public final static int IMPROVED_QUICK = 6; S~L$sqt  
public final static int MERGE = 7; rC.z772y%  
public final static int IMPROVED_MERGE = 8; {/`iZzPg  
public final static int HEAP = 9; Yl%1e|WV  
`>&V_^y+  
public static void sort(int[] data) { a;JB8  
sort(data, IMPROVED_QUICK); -Yx'qz@  
} %PozxF:  
private static String[] name={ RGFanP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i[1K~yXq:  
}; QcJ?1GwA"  
=.`(KXT  
private static Sort[] impl=new Sort[]{ .lnyn|MVb  
new InsertSort(), S]&f+g}&w  
new BubbleSort(), sy`@q<h(  
new SelectionSort(), $sK8l=#  
new ShellSort(), 5v6 x  
new QuickSort(), HwTb753  
new ImprovedQuickSort(), ^`>,~$Q  
new MergeSort(), /f_w@TR\{  
new ImprovedMergeSort(), 3lzjY.]Pgv  
new HeapSort() CY~]lQ  
}; xl [3*K   
D/QSC]"  
public static String toString(int algorithm){  >d-By  
return name[algorithm-1]; ("07t/||  
} R6l`IlG`  
A;ip V :)  
public static void sort(int[] data, int algorithm) { ZDEz&{3U;  
impl[algorithm-1].sort(data); =@(&xfTC  
} J%ng8v5ex  
kt?G\H!}  
public static interface Sort { y%%D="  
public void sort(int[] data); {FRUB(68b  
} ,aOi:aaZRT  
j"6r]nc&  
public static void swap(int[] data, int i, int j) { G J"S*30  
int temp = data; q6DuLFatc*  
data = data[j]; &Omo\Oq&W>  
data[j] = temp; lz2B,#  
} 3z7SK Gy  
} nvY3$ Ty  
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