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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。 HF.^ysI  
插入排序: SE~[bT  
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package org.rut.util.algorithm.support; I}vmU^Y>  
9,r rQQD_  
import org.rut.util.algorithm.SortUtil; x3"#POp  
/** +@/"%9w  
* @author treeroot B[4KX  
* @since 2006-2-2 S9",d~EM  
* @version 1.0 8zR~d%pK  
*/ k'5?M  
public class InsertSort implements SortUtil.Sort{ ksN+ ?E4w  
}I2@%tt?  
/* (non-Javadoc) fOMW"myQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9b*nLyYVz  
*/ 6<ZkJ:=  
public void sort(int[] data) { 2j[&=R/.  
int temp; ~7zGI\= P@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); DY?Kfvef  
} |Xk4&sDrK  
} Z7?~S2{c  
} '`uwJ&@  
wL:flH@  
} 3z&Fi;<+j  
"UJ S5[7$  
冒泡排序: & J2M1z%  
f|tjsZxQ  
package org.rut.util.algorithm.support; 9BuSN*4  
/Dj=iBO  
import org.rut.util.algorithm.SortUtil; 8!Ww J Oe  
u[ Yk  
/** '5|h)Q5  
* @author treeroot | ]X  
* @since 2006-2-2 k<\$OoOZ  
* @version 1.0 &E=>Hj(dTG  
*/ UaB @  
public class BubbleSort implements SortUtil.Sort{ 0ok-IHE<  
vTx2E6  
/* (non-Javadoc) k-{<=>uM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sH[ROm  
*/ u!W0P6   
public void sort(int[] data) { M%kO7>h8  
int temp; Oz%>/zw[h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X'qU*Eo  
if(data[j] SortUtil.swap(data,j,j-1); jm Fz51  
} ftF@Wq1f  
} / :n#`o=;  
} F 70R1OYU  
} f V'ZsJ N  
Gvr@|{k  
} J:zU,IIJ  
PIwFF}<(  
选择排序: Y*vW!yu  
f__cn^1  
package org.rut.util.algorithm.support; d! LE{  
De(Hw& IV  
import org.rut.util.algorithm.SortUtil; b7p@Dn?E  
aD$v2)RR  
/** S_IUV)  
* @author treeroot TmV,&['mg  
* @since 2006-2-2 4QIX19{"  
* @version 1.0 G%W8S \  
*/ /Y7<5!cS  
public class SelectionSort implements SortUtil.Sort { @dPTk"P  
lUvpszH=  
/* -RvQB  
* (non-Javadoc) cLsV`@J(k  
* @8pp EFw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `6]%P(#a  
*/ 5MtLT#C3r  
public void sort(int[] data) { 5jgR4a*_v  
int temp; ''\O v  
for (int i = 0; i < data.length; i++) { .G#8a1#  
int lowIndex = i; +N:o-9  
for (int j = data.length - 1; j > i; j--) { zM(vr"U   
if (data[j] < data[lowIndex]) { =aBctd:eX`  
lowIndex = j; ne_TIwfw-  
} t~#zMUfac  
} mSb#Nn6W  
SortUtil.swap(data,i,lowIndex); Ke2ccN  
} \Yc'~2n  
} 0,89H4  
V#S9H!hm$  
} \(^nSy&N  
5a|w+HO,  
Shell排序: z;|A(*Y  
`</ff+Q6  
package org.rut.util.algorithm.support; <#u=[_H  
9vGu0Um  
import org.rut.util.algorithm.SortUtil; to DG7XN}  
D)m5  
/** M$>1L  
* @author treeroot 3 +G$-ru  
* @since 2006-2-2 bj>v|#r^  
* @version 1.0 rzm:Yx  
*/ 4O)1uF;  
public class ShellSort implements SortUtil.Sort{ v{ 0=  
x"gd8j]s  
/* (non-Javadoc) %B5wH_p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }:KEj_~.  
*/ b2OQtSr a  
public void sort(int[] data) { =IQ5<;U3  
for(int i=data.length/2;i>2;i/=2){ #AL=f'2=f  
for(int j=0;j insertSort(data,j,i); DkvF5c&  
} W"}M1o  
} ~nh:s|l6%M  
insertSort(data,0,1); pxCK;]  
} S/e2P|}  
C8 xZ;V]  
/** pu 7{a  
* @param data 0;AA/  
* @param j ?&63#B,iZ  
* @param i /tf5Bv'<  
*/ !O:y@  
private void insertSort(int[] data, int start, int inc) { y}My.c  
int temp; pEIRh1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O$&mFL[`  
} uj R_"r|l  
} }dWq=)*  
} >aj7||K  
1p/3!1  
} DVB{2~7 4  
=F]FP5V  
快速排序: 0 yuW*z  
rA5=dJ"I  
package org.rut.util.algorithm.support; K1\a#w  
YkniiB[/  
import org.rut.util.algorithm.SortUtil; ND>r#(_\  
w[S pw<Z  
/** i+S) K  
* @author treeroot d4>Z8FF|1B  
* @since 2006-2-2 E[@ u 3i8  
* @version 1.0 'B 43_  
*/ ktFhc3);!  
public class QuickSort implements SortUtil.Sort{ \n8] M\<  
HkUWehVm  
/* (non-Javadoc) gv)P]{%^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )4gJd? 8R  
*/ pb ~u E  
public void sort(int[] data) { zQ@I}K t  
quickSort(data,0,data.length-1); mKL<<L [  
} 7hlO#PYZ  
private void quickSort(int[] data,int i,int j){ |)b6>.^  
int pivotIndex=(i+j)/2; sk,ox~0R  
file://swap F+ ,~v-  
SortUtil.swap(data,pivotIndex,j); z(_Ss@ $  
r@+ri1c  
int k=partition(data,i-1,j,data[j]); G7qG$wd8h  
SortUtil.swap(data,k,j); Tx|Ir+f6L  
if((k-i)>1) quickSort(data,i,k-1); 2 Ga7$q  
if((j-k)>1) quickSort(data,k+1,j); h|VeG3H  
F)&@P-9+  
} aY'C%^h]  
/** 4e~A1-  
* @param data B$ajK`x&I  
* @param i .aAL]-Rj  
* @param j u frW\X  
* @return i'H/ZwU  
*/ n>+mL"hs  
private int partition(int[] data, int l, int r,int pivot) { ryW'Z{+r'  
do{ Hv sob  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &]e'KdXF  
SortUtil.swap(data,l,r); b J=Jg~&  
} TUV&vz{  
while(l SortUtil.swap(data,l,r); ,SynnE68  
return l; iYORu 3  
} Tl$ [4heE  
NdtB1b  
} Bg5Wba%NK  
xO^:_8=&:  
改进后的快速排序: =vQcYa  
HJXT9;w  
package org.rut.util.algorithm.support; !UG 7Uer  
4 N H  
import org.rut.util.algorithm.SortUtil; A+SE91m  
ZHU5SXu  
/** [ oL.+  
* @author treeroot hU`wVy  
* @since 2006-2-2 Gn|F`F  
* @version 1.0 M m[4yP%  
*/ 8oUpQcim  
public class ImprovedQuickSort implements SortUtil.Sort { .y_/Uwu  
R:e<W/P"  
private static int MAX_STACK_SIZE=4096; hd>aZ"nm1  
private static int THRESHOLD=10; q qpgy7  
/* (non-Javadoc) PD&\LbuG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u<3HQ.:;  
*/ OMWbZ>jB  
public void sort(int[] data) { U1DXe h~V  
int[] stack=new int[MAX_STACK_SIZE]; rai3<_W<  
ROg(U8 N  
int top=-1; 0fb`08,^  
int pivot; u.d).da  
int pivotIndex,l,r; C8[&S&<_<  
&Q;sSIc  
stack[++top]=0; Ss~;m']68  
stack[++top]=data.length-1; "x=f=;  
!/}O>v~o  
while(top>0){ =Z P%mW&;}  
int j=stack[top--]; ?o oe'V@  
int i=stack[top--]; wfU7G[  
eqP&8^HP  
pivotIndex=(i+j)/2; "^w]_^GD$d  
pivot=data[pivotIndex]; 0Sle  
q*\x0"mS/  
SortUtil.swap(data,pivotIndex,j); LQ(yScA@  
[s"O mAy4  
file://partition 4{hps.$?~  
l=i-1; X%Z{K-  
r=j; oFy=-p+C  
do{ `tHvD=`m.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i`Q KH  
SortUtil.swap(data,l,r); |zQ4u  
} P;P%n  
while(l SortUtil.swap(data,l,r); g .onTFwN  
SortUtil.swap(data,l,j); lJu;O/  
J?RabYd ~  
if((l-i)>THRESHOLD){ KNS.Nw7  
stack[++top]=i; W=#:.Xj[  
stack[++top]=l-1; !n* +(lZ  
} 9Wnn'T@Tl  
if((j-l)>THRESHOLD){ +?u~APjNN  
stack[++top]=l+1; q#vQv 5  
stack[++top]=j; R A KFU  
} d]:I(9K  
]$Yvj!K*Q  
} \@8+U;d  
file://new InsertSort().sort(data); MS\>DW  
insertSort(data); !G SV6  
} S{;sUGcu  
/** 5jd,{<  
* @param data 4a'N>eDR  
*/ r<K(jG[:{f  
private void insertSort(int[] data) { GliwY_  
int temp; xnmmXtk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jUSmq m'  
} ]z l [H7  
} 9cf:pXMi  
} n` xR5!de  
&d"G/6  
} .WPV dwV4U  
=R#Qx,  
归并排序: M[6:p2u  
{$R' WXVs  
package org.rut.util.algorithm.support; IB[)TZ2m  
i'9vL:3  
import org.rut.util.algorithm.SortUtil; ~~v3p>zRr  
m=}B,']O  
/** p?B=1vn-2  
* @author treeroot 2Ou[u#H  
* @since 2006-2-2 gW-V=LV (  
* @version 1.0 ft$RSb#  
*/ Ag&0wN+jTM  
public class MergeSort implements SortUtil.Sort{ t^6dzrF  
=&,]Z6{ >  
/* (non-Javadoc) +pR[U4$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kuol rfGB  
*/ ;?8_G%va  
public void sort(int[] data) { tS|(K=$  
int[] temp=new int[data.length]; xYmxc9)2  
mergeSort(data,temp,0,data.length-1); ,=Mt`aN  
} |QU <e  
} \XfH  
private void mergeSort(int[] data,int[] temp,int l,int r){ `}mcEl  
int mid=(l+r)/2; K Pt5=a  
if(l==r) return ; NMa} <  
mergeSort(data,temp,l,mid); p(~Yx3$*  
mergeSort(data,temp,mid+1,r); i(iXD  
for(int i=l;i<=r;i++){ " f "6]y  
temp=data; o| #Qu8Lk  
} c&AygqN  
int i1=l; 4WJ.^(  
int i2=mid+1; cFeXpj?GV  
for(int cur=l;cur<=r;cur++){ dR"@`  
if(i1==mid+1) d5oIH  
data[cur]=temp[i2++]; '=Rs/EDME  
else if(i2>r) z"0I>gl  
data[cur]=temp[i1++]; 8Le||)y,\  
else if(temp[i1] data[cur]=temp[i1++]; (>r[- Bft  
else Cq%IE^g<  
data[cur]=temp[i2++]; 4"(<X  
} @>p<3_Y1  
} j!]YNH@  
fZ*+2T>  
} vJ'2@f$  
s;3={e.  
改进后的归并排序: QKr,g  
^~3SSLS4"  
package org.rut.util.algorithm.support; r]b_@hT',  
~S8*t~  
import org.rut.util.algorithm.SortUtil; !t gi  
mT.u0KUIy  
/** [/e<l&y  
* @author treeroot bI:zp!-.  
* @since 2006-2-2 hJZV}a|  
* @version 1.0 y *fDwd~  
*/ fp+gyTnd3  
public class ImprovedMergeSort implements SortUtil.Sort { H[S%J3JI  
n p\TlUc  
private static final int THRESHOLD = 10; paKSr|O  
k} |   
/* #MRMNL@   
* (non-Javadoc) %`&2+\`  
* ,M^P!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l]8D7(g  
*/ m+lvl  
public void sort(int[] data) { UE$UR#T'w  
int[] temp=new int[data.length]; 5 N#3a0)  
mergeSort(data,temp,0,data.length-1); )?X-(4  
} v 8$>rwB  
=y0C1LD+  
private void mergeSort(int[] data, int[] temp, int l, int r) { B2C$N0R#  
int i, j, k; JV]^zW  
int mid = (l + r) / 2; OH">b6>\  
if (l == r) WJ4li@T7V  
return; /f|X(docI  
if ((mid - l) >= THRESHOLD) [3{W^WSOz  
mergeSort(data, temp, l, mid); ]Bjyi[#bg  
else z@B=:tf  
insertSort(data, l, mid - l + 1); (]Y 5eM  
if ((r - mid) > THRESHOLD) m<j8cJ(  
mergeSort(data, temp, mid + 1, r); m^GJuP LW  
else Si6al78  
insertSort(data, mid + 1, r - mid); L IZRoG8  
ha(Z<  
for (i = l; i <= mid; i++) { .y@oz7T5  
temp = data; wPwXM!  
} *=+td)S/1  
for (j = 1; j <= r - mid; j++) { *#tJM.Z  
temp[r - j + 1] = data[j + mid]; iZaI_\"__  
} !f&Kf,#b`  
int a = temp[l]; :=wT vz  
int b = temp[r]; }j*KcB_  
for (i = l, j = r, k = l; k <= r; k++) { N6 (  
if (a < b) { (^u1~1E 5  
data[k] = temp[i++]; (`sH3&Kl  
a = temp; "CUty"R 8  
} else { XT@-$%u  
data[k] = temp[j--]; Gu2P\I2zx  
b = temp[j]; [^U#Qj)hL  
} e S<lwA_  
} @8;W\L$~1  
} /J:bWr  
BV>\ McI+  
/** .pN`;*7`  
* @param data 0},PJ$8x  
* @param l [&&1j@LQ*  
* @param i m0cP(  
*/ rzh#CnL3  
private void insertSort(int[] data, int start, int len) { pO ml8SQf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); %2XHNW  
} MD|5 ol9  
} ;S57w1PbVA  
} &:, dJ  
} jF=gr$  
1Dv R[Lx%  
堆排序: {`K m_<Te!  
QrYpZZ;  
package org.rut.util.algorithm.support; * v75O7l  
{a4z2"\A  
import org.rut.util.algorithm.SortUtil; )0Me?BRp  
\ aHVs  
/** U2ZD]q  
* @author treeroot \9/ b!A  
* @since 2006-2-2 ? P( ZA  
* @version 1.0 ub;ZtsM,%  
*/ \>7^f 3m  
public class HeapSort implements SortUtil.Sort{ {|1Y:&M?   
.8y3O]  
/* (non-Javadoc) )e a:Q?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Nx;0"5IX  
*/ h\PHK C2  
public void sort(int[] data) { J,AR5@)1  
MaxHeap h=new MaxHeap(); _c, '>aH=  
h.init(data); +=.W<b  
for(int i=0;i h.remove(); Kwg4sr5"D  
System.arraycopy(h.queue,1,data,0,data.length); n(L\||#+  
} 4Qo]n re!  
XI9js{p  
private static class MaxHeap{ uwjGDw  
`kU/NKq  
void init(int[] data){ \U[ {z&]~  
this.queue=new int[data.length+1]; =9"W@n[>W  
for(int i=0;i queue[++size]=data; T)Y=zIQ1]7  
fixUp(size); j& <i&  
} 6Qx#%,U^ J  
} 8'f4 Od ?  
IiZ&Pr  
private int size=0; -mRA#  
,;(PwJe  
private int[] queue; pGK;1gVj  
&&VqD w  
public int get() { yb/%?DNQT  
return queue[1]; l"2OP6d  
} `g6h9GC6  
uvV;Mlo]  
public void remove() { v0YG,)_  
SortUtil.swap(queue,1,size--); R8T] 2?Q1  
fixDown(1); '*k'i;2/1  
} tWoh''@#  
file://fixdown GF5^\Rf  
private void fixDown(int k) { E5N{j4\F  
int j; ea~:}!-P  
while ((j = k << 1) <= size) { OBP1B@|l$+  
if (j < size %26amp;%26amp; queue[j] j++; 2c:#O%d(  
if (queue[k]>queue[j]) file://不用交换 *H.oP  
break; ,I_^IitN  
SortUtil.swap(queue,j,k); &bp=`=*  
k = j; ,iv|Pq $!  
} ")!,ZD  
} #*g5u{k'P  
private void fixUp(int k) { `zE}1M%y  
while (k > 1) { %LZ({\5K#f  
int j = k >> 1; a\:VREKj,  
if (queue[j]>queue[k]) kJ-*fe'S  
break; aBw2f[mo  
SortUtil.swap(queue,j,k); * C6a?]  
k = j; i![dPM  
} (>I`{9x>6  
} l+g9 5m jP  
pTyi!:g3W  
} 3Bx:Ntx<  
!ZI7&r`u;  
} ;x8k[p~2  
Wxbq)Z[V  
SortUtil: OLvcivf  
NU*fg`w  
package org.rut.util.algorithm; u*#ZXW  
Hw-Z  
import org.rut.util.algorithm.support.BubbleSort; f4guz  
import org.rut.util.algorithm.support.HeapSort; Eyh51IB.  
import org.rut.util.algorithm.support.ImprovedMergeSort; Q]w&N30  
import org.rut.util.algorithm.support.ImprovedQuickSort; \0H's{uek  
import org.rut.util.algorithm.support.InsertSort; j`*#v  
import org.rut.util.algorithm.support.MergeSort; ,57`D'  
import org.rut.util.algorithm.support.QuickSort; !DI{:I_h(  
import org.rut.util.algorithm.support.SelectionSort; z ly unJD(  
import org.rut.util.algorithm.support.ShellSort; \a=D  
DVkB$2]  
/** v^_mFp-}\  
* @author treeroot {|yob4N  
* @since 2006-2-2 fz3 lV  
* @version 1.0 ~35U]s@v  
*/ /2HN>{F^Y  
public class SortUtil { Cc, `}SP  
public final static int INSERT = 1; %T[^D&9$,  
public final static int BUBBLE = 2; ]wWPXx[>/  
public final static int SELECTION = 3; WwUv5GZTW  
public final static int SHELL = 4; C{q:_M;  
public final static int QUICK = 5; v,\R, {0  
public final static int IMPROVED_QUICK = 6; + \{&2a?  
public final static int MERGE = 7; 1& '8Y  
public final static int IMPROVED_MERGE = 8; WMBm6?54  
public final static int HEAP = 9; `r_m+]  
k~|-gf FP  
public static void sort(int[] data) { D Kw*~0  
sort(data, IMPROVED_QUICK); j$7Xs"  
} F|HJH"2*&q  
private static String[] name={ 6O22P?v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" \J6hI\/4^  
}; &V<W>Y>|l*  
W7\&~IWub  
private static Sort[] impl=new Sort[]{ Cb_oS4vM  
new InsertSort(), )#}mH@  
new BubbleSort(), KPpHwcYxT  
new SelectionSort(), G5,~Z&}YS  
new ShellSort(), )|I5j];L  
new QuickSort(), wfP5@!I  
new ImprovedQuickSort(), "sKa`WN}  
new MergeSort(), u^j {U}  
new ImprovedMergeSort(), MCP "GZK6W  
new HeapSort() `W-&0|%Ta  
}; @YH+c G|  
nWvuaQ0}  
public static String toString(int algorithm){ V&|!RxWK  
return name[algorithm-1]; rJo"fx  
} /2m?15c+  
Hku!bJ  
public static void sort(int[] data, int algorithm) { fbkd"7u  
impl[algorithm-1].sort(data); ,\aUq|~  
} !gmH$1w  
7HHysNB"w  
public static interface Sort { 0ilCS[`b  
public void sort(int[] data); fof2 xcH!  
} Zv_jy@k  
C P3<1~  
public static void swap(int[] data, int i, int j) { er.CDKD%L  
int temp = data; :vL1}H<  
data = data[j]; 1H,g=Y4f%  
data[j] = temp; 7 ua6l[c  
} 8v)_6p(<x8  
} EOoZoVdzx  
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