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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。 {~j /XB  
插入排序: (B>yaM#5  
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package org.rut.util.algorithm.support; @7Q*h   
RMS.1:O  
import org.rut.util.algorithm.SortUtil; 3JlC/v#0  
/** 4f{[*6 GX  
* @author treeroot k8InbX[  
* @since 2006-2-2 2|0Je^$|  
* @version 1.0 ;H7EB`  
*/ q5:0&:m$4$  
public class InsertSort implements SortUtil.Sort{ wo7N7R5  
AI^AK0.L  
/* (non-Javadoc) oTq%wi6 _  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ILkjz^  
*/ T8,k7 7  
public void sort(int[] data) { ALE808;|  
int temp; D:YN_J"kV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l1-4n*fU  
} -vv   
} $:%*gY4~76  
} iN:G/ss4O  
T!m42EvIvE  
} $\0cJCQ3  
jHkyF`<+  
冒泡排序: fap|SMGt  
9l]UE0yTL/  
package org.rut.util.algorithm.support; v?Z'[l  
i>ESEmb-  
import org.rut.util.algorithm.SortUtil; >VRo|o<D  
g)=V#Bglv  
/** 4'+d"Ok  
* @author treeroot Ux_EpC   
* @since 2006-2-2 gZw\*9Q9  
* @version 1.0  4 "pS  
*/ C $]5l; `  
public class BubbleSort implements SortUtil.Sort{ U -Af7qO  
#t"9TP  
/* (non-Javadoc) vqrBRlZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9>A-$a4R>  
*/ u~#%P&3 _W  
public void sort(int[] data) { i:l80 GK  
int temp; httls>:xB|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ y-E1]4?})  
if(data[j] SortUtil.swap(data,j,j-1); z7'n, [  
} ]sX7%3P  
} a='IT 5  
} z{_mEE49  
} UlK/x"JDv  
Nhjle@J<  
} C$KaT3I  
O"@?U  
选择排序: c_~XL^B@  
=ied}a :[  
package org.rut.util.algorithm.support; I?f"<5[0  
TZ^{pvBy  
import org.rut.util.algorithm.SortUtil; (P2[5d|  
pWMiCXnW  
/** D"`%|`O  
* @author treeroot {@Blj3;w}  
* @since 2006-2-2 X }m7@r@  
* @version 1.0 1t0b Uf;(M  
*/ i{<8 hLO  
public class SelectionSort implements SortUtil.Sort { ! a86iHU  
=L:[cIRrT;  
/* <2n'}&F  
* (non-Javadoc) Wl,%&H2S<  
* I 'x$,s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q<z)q<e  
*/ * zd.  
public void sort(int[] data) { a^@+%?X  
int temp; r`?&m3IOP  
for (int i = 0; i < data.length; i++) { b0y-H/d/}  
int lowIndex = i; G!AICcP^  
for (int j = data.length - 1; j > i; j--) {  =Ov9Kf  
if (data[j] < data[lowIndex]) { 0v;ve  
lowIndex = j; ;])I>BT[  
} dz8-):  
} Bfbl#ZkyL  
SortUtil.swap(data,i,lowIndex); jIKBgsiF/  
} cYsR0#  
} @[n2dmj  
gBMta+<fE~  
} 7^c2e*S  
kJ/+IGV^v  
Shell排序: A$/KP\0Y2  
]a8eDy  
package org.rut.util.algorithm.support; 6(:)otz  
*hV4[=  
import org.rut.util.algorithm.SortUtil; 1oB$MQoc  
|p;4dL  
/** fwRGT|":B  
* @author treeroot 0rV/qMo;K  
* @since 2006-2-2 2q+la|1Cr  
* @version 1.0 :RPVT,O}  
*/ ZmNZS0j  
public class ShellSort implements SortUtil.Sort{ 4"LPJX)Q  
baqn7k"  
/* (non-Javadoc) 7^HpVcSM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r Z pbu>S  
*/ C=8H)Ef,l  
public void sort(int[] data) { cvxIp#FbW  
for(int i=data.length/2;i>2;i/=2){ ,&0Z]*  
for(int j=0;j insertSort(data,j,i); `$H7KIG  
} Xu6jHJ@x  
} JFe4/ V  
insertSort(data,0,1); OE6#YT  
} ,K T<4  
6 tX.(/+L  
/** QI.t&sCh5  
* @param data I`lDWL  
* @param j [S%J*sz~  
* @param i P1$f}K}  
*/ 9_eS`,'  
private void insertSort(int[] data, int start, int inc) { Lg8 ]dBXu  
int temp; W^wd ([  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *`%4loW  
} ~M*7N@D  
} sb'lZFSP~s  
} sbzeY 1  
9-B@GFB;8  
} .a {QA  
H%FM  
快速排序: ^Wf S\M`  
g/x_m.  
package org.rut.util.algorithm.support;  2mQOj$Lv  
)ukF3;Gt  
import org.rut.util.algorithm.SortUtil; U8E0~[y'  
*jGPGnSo  
/** (yfXMp,x  
* @author treeroot ]XY0c6 <  
* @since 2006-2-2 Kf|0*c  
* @version 1.0 (s&ORoVGn  
*/ g083J}08  
public class QuickSort implements SortUtil.Sort{ ^mAJ[^%  
Q Qi@>v|d  
/* (non-Javadoc) 2,+d|1(4o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  70{RDj6{  
*/ @#A!w;bz  
public void sort(int[] data) { T=.-Cl1A  
quickSort(data,0,data.length-1); UB a-  
} -E:(w<];  
private void quickSort(int[] data,int i,int j){ n7@j}Q(&?  
int pivotIndex=(i+j)/2; @$Yb#$/  
file://swap A^8x1ydZ  
SortUtil.swap(data,pivotIndex,j); Mg+4huT  
- gB{:UYi3  
int k=partition(data,i-1,j,data[j]); !1("(Eb  
SortUtil.swap(data,k,j); !W(`<d]68:  
if((k-i)>1) quickSort(data,i,k-1); lelMt=  
if((j-k)>1) quickSort(data,k+1,j); SGQD ro=l  
Jlz9E|*qV  
} ]/a g*F  
/** ,?I(/jI  
* @param data ("b*? : B  
* @param i %Or2iuO%-,  
* @param j _nP)uU$  
* @return w\p9J0  
*/ DDWp4`CS|  
private int partition(int[] data, int l, int r,int pivot) { |ebvx?\  
do{ yYg   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 5 1"8Py  
SortUtil.swap(data,l,r); E3bwyK!s  
} X`D+jiQ(f  
while(l SortUtil.swap(data,l,r); \d:h$  
return l; PFm\[2  
} )}q uw"H  
g(nK$,c  
} j|k @MfA  
f'i6QMk\&  
改进后的快速排序: v O PMgEI  
!n:uiwh  
package org.rut.util.algorithm.support; ]b> pI;  
Qd?CTYNsv  
import org.rut.util.algorithm.SortUtil; *l:&f_ngV  
fwy"w  
/** Q4=|@|U0  
* @author treeroot ;sCU [4  
* @since 2006-2-2 *{Yh6 {  
* @version 1.0 Hl/7(FJqc>  
*/ zs0hXxTY:  
public class ImprovedQuickSort implements SortUtil.Sort { G8noQ_-  
2Sjt=LOc="  
private static int MAX_STACK_SIZE=4096; W\%q} q2?  
private static int THRESHOLD=10; ZzT&$J7]`{  
/* (non-Javadoc) 8nodV 9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Y~xIj >  
*/ wW^Zb  
public void sort(int[] data) { -IbbPuRq  
int[] stack=new int[MAX_STACK_SIZE];  9|<Be6  
y)tYSTJK  
int top=-1; I.-v?1>,  
int pivot; UTvs |[  
int pivotIndex,l,r; !D7"=G}HD  
BD4`eiu"  
stack[++top]=0; #%4=)M>^  
stack[++top]=data.length-1; Hk~k@Wft  
+ LS3T^  
while(top>0){ SYeE) mI  
int j=stack[top--]; `2,a(Sk#  
int i=stack[top--]; LZ4xfB (  
oE6|Zw  
pivotIndex=(i+j)/2; Fav^^vf*1  
pivot=data[pivotIndex]; }s(C^0x  
8ZW?|-i  
SortUtil.swap(data,pivotIndex,j); zWb -pF|  
F(;jM(  
file://partition Fh^ox"3c  
l=i-1; nGns}\!7'  
r=j; GyuV %  
do{ =&N$Vqn  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :6zC4Sr^  
SortUtil.swap(data,l,r); =},{8fZ4  
} 'bC]M3P  
while(l SortUtil.swap(data,l,r); 8<{;=m8cQ  
SortUtil.swap(data,l,j); 5a6VMqQ6  
*<xrp*O  
if((l-i)>THRESHOLD){ )@_ugW-j  
stack[++top]=i; +2Z#M  
stack[++top]=l-1; YNk|+A.<d  
} Ch7Egz l7?  
if((j-l)>THRESHOLD){ i%MA"I\9  
stack[++top]=l+1; `zY!`G  
stack[++top]=j; DRp&IP<  
} gvGi %gq  
c_Tzyh7l4  
} MUB37  
file://new InsertSort().sort(data); M!#AfIyB  
insertSort(data); E23w *']  
} NHAH#7]M&1  
/** bNXAU\M^  
* @param data iE=P'"I  
*/ ewym 1}o  
private void insertSort(int[] data) { |by@ :@*y  
int temp; /p 5=i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); vf N#NY6  
} &wb9_? ir-  
} !)nD xM`p  
} I-bF{  
M/} aq  
} z&>|*C.Y  
UGCox-W"  
归并排序: [IMQIX  
:/i~y$t  
package org.rut.util.algorithm.support; r@yD8D \  
ami09JHy  
import org.rut.util.algorithm.SortUtil; Dkw*Je#6PX  
Z\'wm'  
/** PtqGX=u  
* @author treeroot 8 URj1 W  
* @since 2006-2-2 Fg4@On[,i  
* @version 1.0 :~D]; m  
*/ U!0E_J  
public class MergeSort implements SortUtil.Sort{ hbfsHT  
;_N"Fdl  
/* (non-Javadoc) :3 y_mf>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?@DNsVwb  
*/ nj  
public void sort(int[] data) { E(;i>   
int[] temp=new int[data.length]; x2m]Us@LIU  
mergeSort(data,temp,0,data.length-1); LipxAE?O  
} 9~~UM<66W  
np=kTJ  
private void mergeSort(int[] data,int[] temp,int l,int r){ V^2-_V]8  
int mid=(l+r)/2; \K}aQKB/j  
if(l==r) return ; 8YKQIt K  
mergeSort(data,temp,l,mid); ~#Aa Ldq  
mergeSort(data,temp,mid+1,r); r )8z#W>s  
for(int i=l;i<=r;i++){ "xn|zB  
temp=data; LABNj{=D!  
} Z/7dg-$?'0  
int i1=l; I="oxf#q  
int i2=mid+1; PQ3h\CL1n  
for(int cur=l;cur<=r;cur++){ dyO E6Ex  
if(i1==mid+1) s:b" \7  
data[cur]=temp[i2++]; c3#q0Ma  
else if(i2>r) Vo >Xp  
data[cur]=temp[i1++]; 6c &Y  
else if(temp[i1] data[cur]=temp[i1++]; Yf= FeH7"  
else h)@InYwu7  
data[cur]=temp[i2++]; J=9#mOcg"  
} n`.#59-Hx  
} si?HkJv5  
SX_4=^  
} H(&Z:{L  
t!t=|JNf{  
改进后的归并排序: 6v>z h  
\iga Q\~  
package org.rut.util.algorithm.support; oCuV9dA.  
;RHNRVP  
import org.rut.util.algorithm.SortUtil; VDpxk$a  
v ): V  
/** "lrA%~3%[P  
* @author treeroot N,|r1u9X#  
* @since 2006-2-2 }dKLMNqPA  
* @version 1.0 xqv[? ?  
*/ .Q[yD<)Ubs  
public class ImprovedMergeSort implements SortUtil.Sort { qd8pF!u|#  
)5GQJiY  
private static final int THRESHOLD = 10; 1.0J2nZpt  
x5F@ad 9  
/* Vhph`[dC{  
* (non-Javadoc) =<.F3lo\s  
* D:m#d.m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'HB~Dbq`V  
*/ +*.1}r&  
public void sort(int[] data) { 0Cq!\nzz  
int[] temp=new int[data.length]; 75AslL?t  
mergeSort(data,temp,0,data.length-1); 61|B]ei/  
} FW Y[=S  
ET+'Pj3  
private void mergeSort(int[] data, int[] temp, int l, int r) { iaRR5D-  
int i, j, k; %w:'!X><  
int mid = (l + r) / 2; @n@g)`  
if (l == r) *~;8N|4<  
return; :\bfGSD/gd  
if ((mid - l) >= THRESHOLD) {:)vwUe{  
mergeSort(data, temp, l, mid); 3]`mQm E  
else /buWAX 1  
insertSort(data, l, mid - l + 1); 7Ud'd<  
if ((r - mid) > THRESHOLD) fnOIv#  
mergeSort(data, temp, mid + 1, r); j)";:v  
else @|=UrKAN  
insertSort(data, mid + 1, r - mid); QptOQ3!  
W>$BF[x!{  
for (i = l; i <= mid; i++) { Rcf=J){D6  
temp = data; G#lg|# -#  
} [+Un ^gD  
for (j = 1; j <= r - mid; j++) { o(Kcs-W2  
temp[r - j + 1] = data[j + mid]; 9-93aC.|}  
} Ux_<d?p  
int a = temp[l]; GX5W^//}  
int b = temp[r]; xYwkFB$$*  
for (i = l, j = r, k = l; k <= r; k++) { `xIh\q  
if (a < b) { tW(+xu36  
data[k] = temp[i++]; )eq}MaW+j  
a = temp; `Cg^in\  
} else { !tBeuemN%  
data[k] = temp[j--]; r<|nwFJ  
b = temp[j]; NjP ]My  
} :o$@F-$k  
} t'aSF{%  
} J7n5Ps\M  
w_3xKnMT\  
/** g ;LVECk  
* @param data )!a$#"'  
* @param l ETm]o  
* @param i D$hQyhz'  
*/ b pp*  
private void insertSort(int[] data, int start, int len) { u~}%1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (#z;(EN0t  
} ^#w{/C/n  
} }4vjKSV  
} =GTD"*vwr  
} _[JkJwPTx  
4=s9A  
堆排序: {MxnIg7'  
:'Xr/| s  
package org.rut.util.algorithm.support; S.hC$0vrj  
<I 1y  
import org.rut.util.algorithm.SortUtil; e?=elN  
n;qz^HXEJ  
/** !-RwB@\  
* @author treeroot !7c'<[+Hm  
* @since 2006-2-2 |[ocyUsxX  
* @version 1.0 `j:M)2:*y  
*/ u G[!w!e  
public class HeapSort implements SortUtil.Sort{ P&\X`ZUA  
tN}c0'H  
/* (non-Javadoc) lM+ xU;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {_7Hz,2U  
*/ HEpM4xe$  
public void sort(int[] data) { 8Z!*[c>K-?  
MaxHeap h=new MaxHeap(); +f|6AeE  
h.init(data); IfB/O.;Kz  
for(int i=0;i h.remove(); *]2R.u  
System.arraycopy(h.queue,1,data,0,data.length); %A2`&:ip  
} 9gR.RwR X  
n.Vtc-yZU  
private static class MaxHeap{ B@-"1m~la?  
Y-]YDXrPQ  
void init(int[] data){ ?[|hGR2L  
this.queue=new int[data.length+1]; fkG##!  
for(int i=0;i queue[++size]=data; 4,zvFH*AH  
fixUp(size); }! =U^A)  
} 97S? ;T  
} '=@r7g.2  
P\T|[%E'  
private int size=0; 5& *zY)UL  
;Z4o{(/zU  
private int[] queue; AWL[zixR  
~v\hIm3=m  
public int get() { YLmjEs%  
return queue[1]; #s{aulx  
} (Com,  
EZ{/]gCK  
public void remove() { Z8fJ{uOIL  
SortUtil.swap(queue,1,size--); OM{Dq|  
fixDown(1); 0T0/fg(o  
} CpSK(2j  
file://fixdown )7w@E$l"  
private void fixDown(int k) { FT4l$g7"  
int j; ctK65h{Eo  
while ((j = k << 1) <= size) { )2]a8JVf  
if (j < size %26amp;%26amp; queue[j] j++; RF!'K ko  
if (queue[k]>queue[j]) file://不用交换 ZYDW v/u  
break; [ t$AavU.  
SortUtil.swap(queue,j,k); 4(8<w cL  
k = j; FW5}oD( H  
} yp?w3|`4;  
} hv{87`L'K(  
private void fixUp(int k) { 9#fp_G;=  
while (k > 1) { [,GU5,o  
int j = k >> 1; b"&E,=L  
if (queue[j]>queue[k]) y<v|X2  
break; T g{UK  
SortUtil.swap(queue,j,k); cyHU\!Z*Zq  
k = j; c>rKgx  
} {=6)SBjf  
} x,f>X;04  
5Edo%Hd6  
} -)6;0  
"8?TSm8  
} hMWo\qM  
?DRR+n _  
SortUtil: 7dHIW!OA  
,m:6qdN  
package org.rut.util.algorithm; . v\PilF  
jOv~!7T  
import org.rut.util.algorithm.support.BubbleSort; H@4/#V|Uy  
import org.rut.util.algorithm.support.HeapSort; [n!x&f8Xh  
import org.rut.util.algorithm.support.ImprovedMergeSort; m\?\6W k  
import org.rut.util.algorithm.support.ImprovedQuickSort; E9L!)D]Y  
import org.rut.util.algorithm.support.InsertSort; 4]IKh,jT  
import org.rut.util.algorithm.support.MergeSort; 'QnW9EHLF  
import org.rut.util.algorithm.support.QuickSort; |e+aZ%g  
import org.rut.util.algorithm.support.SelectionSort; Y!it!9  
import org.rut.util.algorithm.support.ShellSort; Pr2;Kp  
+nzTxpcP@K  
/** !%V*UR9  
* @author treeroot DiR'p`b~  
* @since 2006-2-2 <uC<GDO  
* @version 1.0 E$R_rX4x  
*/ wcl!S{  
public class SortUtil { 8UYJye8  
public final static int INSERT = 1; j)BQMtt&U  
public final static int BUBBLE = 2; x RB7lV*  
public final static int SELECTION = 3; ivD^HhG  
public final static int SHELL = 4; $Ba`VGP>)3  
public final static int QUICK = 5; Qi"'bWX@  
public final static int IMPROVED_QUICK = 6; j=\Mx6os  
public final static int MERGE = 7; ,$ mLL  
public final static int IMPROVED_MERGE = 8; _)q4I(s*  
public final static int HEAP = 9; HGb.656r  
V>r j$Nc]  
public static void sort(int[] data) { 5)8 .  
sort(data, IMPROVED_QUICK); 0NrTJ R`  
} ho_4fDv  
private static String[] name={ smbUu/  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" k0knPDbHv  
}; (qbc;gBy  
UC(9Dz  
private static Sort[] impl=new Sort[]{ *.xZfi_|  
new InsertSort(), i j!*CTG  
new BubbleSort(), 7G2vYKC'  
new SelectionSort(), 38"cbHE3  
new ShellSort(), egbb1+tY  
new QuickSort(), OFQ{9  
new ImprovedQuickSort(), 'cYQ ?;  
new MergeSort(), @| P3  
new ImprovedMergeSort(), n-W?Z'H{r  
new HeapSort() @T_O6TcY  
};  J(^ >?d'  
69rwX"^  
public static String toString(int algorithm){ F46O!xb%  
return name[algorithm-1]; l=,.iv=W  
} 7pd$?=__I  
sb 8dc  
public static void sort(int[] data, int algorithm) { .1Vu-@  
impl[algorithm-1].sort(data); Okk hP  
} 6Z$b?A3zM  
V.U|OQouT  
public static interface Sort { rrYp'L  
public void sort(int[] data); Iht@mE  
} FGDw;lEa9[  
5qeT4| Ol  
public static void swap(int[] data, int i, int j) { ;*_I,|A:Xr  
int temp = data; 9wzg{4/-$  
data = data[j]; V54q"kP,@.  
data[j] = temp; SK}HXG{?  
} WVinP(#nfM  
} B JU*`Tx  
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