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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。 |)S*RQb\  
插入排序: -t: U4r(  
biENRJQ.  
package org.rut.util.algorithm.support; =yWdtBng  
S|F:[(WaM  
import org.rut.util.algorithm.SortUtil; 6zI}?KZf  
/** /7x1Z*Hg  
* @author treeroot gux?P2f  
* @since 2006-2-2 Re*_Dt=r  
* @version 1.0 y-{?0mLq  
*/ ?in)kL  
public class InsertSort implements SortUtil.Sort{ h4Xz"i{z  
PJ\k|  
/* (non-Javadoc) *,28@_EwY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6Ad=#MM  
*/ L%+mD$@u  
public void sort(int[] data) { G&08Qb ,N  
int temp; ZEso2|   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Hwcmt!y  
} Dt(xj}[tC  
} BZ(I]:oDL  
} 1x8wQ/p|  
^bq,+1;@Q  
} 5 v^tPGg4  
}G<~Cx5[  
冒泡排序: rU6A^p\,  
FIUQQQ\3  
package org.rut.util.algorithm.support; 3,n"d-  
kn/xt  
import org.rut.util.algorithm.SortUtil; f~7V<v  
k8r1)B4ab  
/** wNU;gz  
* @author treeroot j4u ["O3  
* @since 2006-2-2 | ^G38  
* @version 1.0 e;2A{VsD8  
*/ eD7qc1*G  
public class BubbleSort implements SortUtil.Sort{ mtdy@=?1Y  
?!O4ia3nFk  
/* (non-Javadoc) @8$z2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u60RuP&  
*/ F@mxd  
public void sort(int[] data) { L|B! ]}  
int temp; zrf tF2U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _!_1=|[  
if(data[j] SortUtil.swap(data,j,j-1); =2}V=E/85  
} zRbY]dW  
} z#1"0Ks&P  
} 20}w . V  
} sPXjU5uq#  
UZ#oaD8H6  
} Vf<q-3q  
;e< TEs  
选择排序: %NM={X|'  
/4@ [^}x  
package org.rut.util.algorithm.support; D$@2H>.-  
D c;k)z=  
import org.rut.util.algorithm.SortUtil; .(3ec/i4CF  
N9*:]a  
/** q^?a|l  
* @author treeroot \BN$WV  
* @since 2006-2-2 { {:Fs  
* @version 1.0 %ZX9YuXQ  
*/ :(wFNK/0{  
public class SelectionSort implements SortUtil.Sort { k1ja ([Q  
FBbaLqgVF{  
/* ~Z!YB,)bp  
* (non-Javadoc) n$v4$_qS  
* WA0D#yuJ/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pWq+`|l$  
*/ Gp+\}<^ Z  
public void sort(int[] data) { ]^T-X/v9  
int temp; `oH4"9&]k3  
for (int i = 0; i < data.length; i++) { v5@M 34  
int lowIndex = i; s;Gg  
for (int j = data.length - 1; j > i; j--) { )(_NFpM  
if (data[j] < data[lowIndex]) { -e_o p'`  
lowIndex = j; Js vdC]+  
} `( w"{8laB  
} _ Yc"{d3S  
SortUtil.swap(data,i,lowIndex); 3z u6#3^  
} *ra>Kl0   
} vbd)L$$20+  
/'5d0' ,M  
} kD?@nx>  
P|Gwt&  
Shell排序: V1pBKr)v  
.g1x$cQ1<  
package org.rut.util.algorithm.support; L AH">E  
+cSc0:  
import org.rut.util.algorithm.SortUtil; {dm>]@"S  
d4*SfzB  
/** ' QMcQvU  
* @author treeroot u&^KrOM@#  
* @since 2006-2-2 '&dT   
* @version 1.0 "j8)l4}  
*/ ,B_c  
public class ShellSort implements SortUtil.Sort{ N-_APWA  
K&Bbjb_|  
/* (non-Javadoc) Em^~OM3U$q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M=lU`Sm  
*/ #o7)eKeQ  
public void sort(int[] data) { b9m`y*My  
for(int i=data.length/2;i>2;i/=2){ q6w)zTpJGJ  
for(int j=0;j insertSort(data,j,i); yNow hh  
} `:*2TLxIk  
} Z\xnPhV  
insertSort(data,0,1); Bv!{V)$  
} JJ%@m;~  
tx~,7TMS/  
/** AvB=/p@]  
* @param data AU}kIm_+  
* @param j r)>3YM5  
* @param i "YY<T&n  
*/ K) fKL   
private void insertSort(int[] data, int start, int inc) { <kPNe>-f  
int temp; *1{A'`.=\  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]& ckq  
} 6p*X8j3pW  
} BDvkY  
} 6V%}2YE?X  
B=L!WGl<!  
} $q z{L~ <  
W"\}##  
快速排序: 7@%qm|i>w  
[n)ak)_/  
package org.rut.util.algorithm.support; Um{) ?1  
t;6<k7h  
import org.rut.util.algorithm.SortUtil; WoN},oT[i  
QK[^G6TI  
/** vJ}WNvncVF  
* @author treeroot L6PgWc;m  
* @since 2006-2-2 kY\faWuR  
* @version 1.0 <O0tg[ub  
*/ Rw{' O]Q*  
public class QuickSort implements SortUtil.Sort{ ?Y3i-jY  
%W\NYSm  
/* (non-Javadoc) %%}l[W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,"is%O.  
*/ Y3DqsZ@  
public void sort(int[] data) { * @]wT'  
quickSort(data,0,data.length-1); 4X]/8%]V  
} *6` ^8Y\  
private void quickSort(int[] data,int i,int j){ 6E-eD\?I&  
int pivotIndex=(i+j)/2; A;Y~Hu4KPZ  
file://swap npltsK):  
SortUtil.swap(data,pivotIndex,j); i@nRZ$K  
syW[uXNLZ  
int k=partition(data,i-1,j,data[j]); fc@<'-VA  
SortUtil.swap(data,k,j); W ,6q1  
if((k-i)>1) quickSort(data,i,k-1); nt$P A(Y  
if((j-k)>1) quickSort(data,k+1,j); (0q`eO2  
eLPtdP5k  
} DZ2gnRg  
/** U<0Wa>3zj  
* @param data yZ,pH1  
* @param i M?sax+'  
* @param j kE'p=dXx  
* @return &,%n  
*/ aUZ?Ue9l>2  
private int partition(int[] data, int l, int r,int pivot) { hzr, %r  
do{ ME]4tu  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); *W\3cS  
SortUtil.swap(data,l,r); =@M9S  
} `oikSx$vB.  
while(l SortUtil.swap(data,l,r); VVch%  
return l; BedL `[ ,  
} XLpn3sX$  
e8 ]CB  
} q;nAq%  
2QbKh)   
改进后的快速排序: &%j`WF4p  
{l$)X  
package org.rut.util.algorithm.support; m}?jU  
drjNK!XL@  
import org.rut.util.algorithm.SortUtil; /c=8$y\%@  
& n@hD7=(  
/** 153*b^iDBh  
* @author treeroot J[?oV;O  
* @since 2006-2-2 c!6v-2ykv  
* @version 1.0 Uz_ob9l<#H  
*/ q!0HsF  
public class ImprovedQuickSort implements SortUtil.Sort { \[{8E}_"^  
2Xv}JPS2As  
private static int MAX_STACK_SIZE=4096; =p[Sd*d  
private static int THRESHOLD=10; JJ)  
/* (non-Javadoc) ;q9Y%*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2(GY k  
*/ /'DAB**  
public void sort(int[] data) { F-:AT$Ok  
int[] stack=new int[MAX_STACK_SIZE]; ]Whv%  
;U?=YSHk7  
int top=-1; W#g!Usf:/  
int pivot; K{I"2c  
int pivotIndex,l,r; ZK t{3P  
'j'6x'[> ]  
stack[++top]=0; THOYx :Nr;  
stack[++top]=data.length-1; uaP5(hUI  
-:_3N2U=+  
while(top>0){ WNjG/U  
int j=stack[top--]; *^[6uaa  
int i=stack[top--]; 3 +'vNc  
]lGkZyU hI  
pivotIndex=(i+j)/2; zwQ#Yvd  
pivot=data[pivotIndex]; r\fkx>  
mm#UaEp  
SortUtil.swap(data,pivotIndex,j); <^> nR3E  
=jm\8sl~~  
file://partition Ew.6y=Ba  
l=i-1; {Q$8p2W  
r=j; M<l<n$rYS  
do{ eVMnI yr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]:F !h2  
SortUtil.swap(data,l,r); %F150$(D  
} \>oy2{=;'  
while(l SortUtil.swap(data,l,r); oc-&}R4=  
SortUtil.swap(data,l,j); GJU(1%-  
imM#zy  
if((l-i)>THRESHOLD){ 9f& !Uw_W  
stack[++top]=i; X*7VDt=  
stack[++top]=l-1; ,tZL"  
} EY)?hJS,  
if((j-l)>THRESHOLD){ n|H8O3@  
stack[++top]=l+1; 0[Yks NNl1  
stack[++top]=j; +pK35u  
} mDA+ .l&)b  
?vWF[ DRd'  
} zI ^:{]p  
file://new InsertSort().sort(data); _Hx'<%hhI  
insertSort(data); w ?"M  
} *@@dO_%6  
/** y~OP9Tg  
* @param data @[\zO'|  
*/ 1)97AkN(O  
private void insertSort(int[] data) { <ir]bQT  
int temp; Z-}A "n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {Qd oI Pr3  
} k]-Q3 V  
} (u@X5O(a  
} 2Kr8#_) 0  
<7Yh<(R e^  
} )iC@n8f7o  
`l70i2xcj  
归并排序: rR{KnM  
x<w-j[{k_K  
package org.rut.util.algorithm.support; u^'X>n)oL#  
hfc~HKLC  
import org.rut.util.algorithm.SortUtil; >bmdu \j5R  
&+hk5?c /  
/** l  LBzY`j  
* @author treeroot LV$Ko_9eA  
* @since 2006-2-2 vq3:N'  
* @version 1.0 g#1 Y4  
*/ 6N Ogi  
public class MergeSort implements SortUtil.Sort{ NTCFmdbs 6  
noB8*n0  
/* (non-Javadoc) >@a7Zzl0H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V+U89j1g  
*/ eQ[}ALIq  
public void sort(int[] data) { ^rY18?XC+:  
int[] temp=new int[data.length]; eqOT@~H  
mergeSort(data,temp,0,data.length-1); aehB,l0  
} tK#/S+l  
Ui1s ]R  
private void mergeSort(int[] data,int[] temp,int l,int r){ IQd~` G  
int mid=(l+r)/2; #tw_`yh  
if(l==r) return ; ;Vf{3  
mergeSort(data,temp,l,mid); Azr|cKu]  
mergeSort(data,temp,mid+1,r); sC2NFb-+&  
for(int i=l;i<=r;i++){ 9`^(M^|c  
temp=data; ?V~vP%1  
} R7h3O0@!  
int i1=l; f?16%Rk<  
int i2=mid+1; u35"oLV6}#  
for(int cur=l;cur<=r;cur++){ nC?Lz1re  
if(i1==mid+1) M*Q}^<E*  
data[cur]=temp[i2++]; =E(ed,gH8  
else if(i2>r) BT$Oh4y4  
data[cur]=temp[i1++]; #IDLfQ5g  
else if(temp[i1] data[cur]=temp[i1++]; Oi@|4mo  
else eZhF<<Y  
data[cur]=temp[i2++]; RHbbj}B  
} $Tt.r  
} LZ&I<ID`-  
v:w^$]4  
} FGm!|iI  
X Vo+ <&  
改进后的归并排序: Be^"sC  
!\Cu J5U  
package org.rut.util.algorithm.support; WyM2h  
d6??OO=~>M  
import org.rut.util.algorithm.SortUtil; @`^Z5n.4  
Z0XQ|gkH  
/** /L|x3RHs  
* @author treeroot +9yMtR  
* @since 2006-2-2 eIf-7S]m  
* @version 1.0 0~DsA Ua  
*/ jJ'NYG  
public class ImprovedMergeSort implements SortUtil.Sort { SD@ 0X[  
FlrYXau  
private static final int THRESHOLD = 10; DFRgn  
O9ro{ k  
/* z 9WeOs  
* (non-Javadoc) #~qza ETv,  
* uFlf#t =  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wM-H5\9n  
*/ _c:th{*  
public void sort(int[] data) { /_8nZVu  
int[] temp=new int[data.length]; uI9+@oV  
mergeSort(data,temp,0,data.length-1); z-sq9Qp&x  
} f^IB:e#j;  
r5$!41   
private void mergeSort(int[] data, int[] temp, int l, int r) { "W9z>ezp  
int i, j, k; i2[8^o`_  
int mid = (l + r) / 2; x~D8XN{  
if (l == r) 2jkma :$'  
return; R 4DfqX  
if ((mid - l) >= THRESHOLD) Tn\{*A  
mergeSort(data, temp, l, mid); ol {N^fi K  
else <1_3`t  
insertSort(data, l, mid - l + 1); q,;wD1_wG  
if ((r - mid) > THRESHOLD) K&"X7fQ  
mergeSort(data, temp, mid + 1, r); Nm%#rZrN~Q  
else 'bg'^PN>z  
insertSort(data, mid + 1, r - mid); cw0uLMqr`  
rx<P#y]3)  
for (i = l; i <= mid; i++) { {QOy' 8 /  
temp = data; [l<&eI&ln  
} K(TejW#  
for (j = 1; j <= r - mid; j++) { Q0ba;KPm  
temp[r - j + 1] = data[j + mid]; dAM]ZR<  
} [ThAv Q_$  
int a = temp[l]; L EFLKC  
int b = temp[r]; xv%]g= Q  
for (i = l, j = r, k = l; k <= r; k++) { 'jy e*  
if (a < b) { "Rtt~["%  
data[k] = temp[i++]; [.C P,Ly  
a = temp; l$R9c+L=  
} else { 3&+nV1  
data[k] = temp[j--]; #|=lU4Bf  
b = temp[j]; 'S&Zq:  
} {*  w _*  
} ETdN<}m  
} :$P1ps3B  
cXYE !(  
/** 6C ?,V3Z  
* @param data <R%TCVwC@  
* @param l 7(| f@Y~*  
* @param i 3Jj&wHp]  
*/ .>1Y-NM  
private void insertSort(int[] data, int start, int len) { }-9 c1&m  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y*=Ipdj  
} VG50n<m9  
} Q=#FvsF#z3  
} 2j ]uB0  
} EDF0q i  
.%M80X{5~  
堆排序: <l eE.hhf.  
mSk";UCn  
package org.rut.util.algorithm.support; 8-@H zS%  
Q DKY7"H  
import org.rut.util.algorithm.SortUtil; 4<f^/!9w  
LIyb+rH#yg  
/** wk1/&  
* @author treeroot WB `h)  
* @since 2006-2-2 vM:c70=  
* @version 1.0 _({wJ$aYC  
*/ # 00?]6`z  
public class HeapSort implements SortUtil.Sort{ {V8uk $  
u?'J1\z  
/* (non-Javadoc) ~I~lb/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W?[ C au-  
*/ ^7=h%{ >=  
public void sort(int[] data) { |M18/{  
MaxHeap h=new MaxHeap(); QpS7 nGev  
h.init(data); jI<_(T  
for(int i=0;i h.remove(); {*<%6?  
System.arraycopy(h.queue,1,data,0,data.length); 82o|(pw  
} tOo\s&j  
ogJ';i/o  
private static class MaxHeap{ ([7XtG/?  
\vS > jB  
void init(int[] data){ z&jASL  
this.queue=new int[data.length+1]; ~b4kV)[ q  
for(int i=0;i queue[++size]=data; `-?`H>+OG  
fixUp(size); ^nDa-J$  
} ~4mRm!DP  
} Ua~8DdW  
7d+0'3%  
private int size=0; /1Ss |.  
v0T?c53?  
private int[] queue; xokA_3,1F  
t{`krs``  
public int get() { /neY2D6  
return queue[1]; jBd=!4n  
}  J2Qt!-  
h*3{IHAQ  
public void remove() { G+I->n-s4  
SortUtil.swap(queue,1,size--); !:}m-iqQ1  
fixDown(1); Deq@T {  
} ,v?FR }v  
file://fixdown d\8j!F^=  
private void fixDown(int k) { TFz k5  
int j; ~c*kS E2X  
while ((j = k << 1) <= size) { (aq-aum-I  
if (j < size %26amp;%26amp; queue[j] j++; 4i<GqG  
if (queue[k]>queue[j]) file://不用交换 #wkSru&LS  
break; ZQ'|B  
SortUtil.swap(queue,j,k); hb9HVj  
k = j; 0vMKyT3 c  
} vTL/% SJ8  
}  D@]/%;  
private void fixUp(int k) { b tbuE  
while (k > 1) { z<J2e^j  
int j = k >> 1; RS@G.|  
if (queue[j]>queue[k]) :u)Qs#'29  
break; YHxQb$v)  
SortUtil.swap(queue,j,k); cxx8I  
k = j; '+c@U~d*7  
} lAo4)  
} Y3 -f68*(  
xZ SDA8kS  
} ]Z52L`k  
1{1mL-I;  
} ['3E'q,4&  
#nmh=G?\Sm  
SortUtil: ^ q3H  
*nv ^s  
package org.rut.util.algorithm; 5'<mfY'B  
aN!,\D  
import org.rut.util.algorithm.support.BubbleSort; ,kl``w|1M  
import org.rut.util.algorithm.support.HeapSort; *)vy%\  
import org.rut.util.algorithm.support.ImprovedMergeSort; R0|4KT-i  
import org.rut.util.algorithm.support.ImprovedQuickSort; ]3Jb$Q@  
import org.rut.util.algorithm.support.InsertSort; 4ti,R'  
import org.rut.util.algorithm.support.MergeSort; $if(n||  
import org.rut.util.algorithm.support.QuickSort; rX)_!mR  
import org.rut.util.algorithm.support.SelectionSort; ]u:Ij|.'y0  
import org.rut.util.algorithm.support.ShellSort; kxmsrQ>av  
=?N$0F!  
/** 6}Rb-\N  
* @author treeroot h${=gSJc  
* @since 2006-2-2 _SH~.Mt_!  
* @version 1.0 7 h>,  
*/ Zlygx  
public class SortUtil { R0G!5>1i  
public final static int INSERT = 1; qca=a }  
public final static int BUBBLE = 2; Pu'NSNT  
public final static int SELECTION = 3; z f >(Y7M  
public final static int SHELL = 4; o|_9%o52'  
public final static int QUICK = 5; [<>%I#7ulG  
public final static int IMPROVED_QUICK = 6; IGlM} ?x  
public final static int MERGE = 7; }Nma %6PfV  
public final static int IMPROVED_MERGE = 8; $+,kibk*R  
public final static int HEAP = 9; R3.8Dr 0f  
9! yDZ<s  
public static void sort(int[] data) { BL-7r=Z  
sort(data, IMPROVED_QUICK); 6_:KFqc W  
} w{4#Q[  
private static String[] name={ iRM ?_|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" + +Eu.W;&#  
}; ME.!l6lm\  
Qtt3;5m  
private static Sort[] impl=new Sort[]{ |D[LU[<C  
new InsertSort(), E 0@u|  
new BubbleSort(), ]Y$jc  
new SelectionSort(), m';4`Y5-  
new ShellSort(), *Xn6yL9  
new QuickSort(), H|'n|\{lt  
new ImprovedQuickSort(), Y^XZ.R  
new MergeSort(), O:8Ne*L`D  
new ImprovedMergeSort(), jLw|F-v-l<  
new HeapSort() -U;=]o1  
}; c_aj-`BKp  
kZR(0, W  
public static String toString(int algorithm){ /03?(n= 3  
return name[algorithm-1]; .\3gb6S}  
} ~K ('t9|  
DU-dIq i  
public static void sort(int[] data, int algorithm) { o@ L '|#e  
impl[algorithm-1].sort(data); (?i4P5s[!  
} }}oIZP\qM  
s%A?B 8,  
public static interface Sort { cs[nFfM  
public void sort(int[] data); v|@EuN14<  
} F'@ 9kdp  
j@4]0o  
public static void swap(int[] data, int i, int j) { mILCC} Kt  
int temp = data; f?(g5o*2  
data = data[j]; Oe;1f#` 5  
data[j] = temp; Fz5eCe\B  
} Ci2*5n<  
} AdzdYZiM_  
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