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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。 ,n )f=q*%  
插入排序: m+&) eQ:  
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package org.rut.util.algorithm.support; N_<wiwI<  
bp"@vlv  
import org.rut.util.algorithm.SortUtil; pHO,][VZ  
/** m][i-|@M  
* @author treeroot o!bIaeEaU  
* @since 2006-2-2 _4~'K?  
* @version 1.0 Js{X33^Ju  
*/ KYe@2 6   
public class InsertSort implements SortUtil.Sort{ 0_\@!#-sml  
?4QX;s7  
/* (non-Javadoc) M`m-@z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DNYJR]>  
*/ h zv4+1Wd[  
public void sort(int[] data) { MLVrL r t  
int temp; 1dsMmD[O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);   %4  
} {|:ro!&  
} @ ={Hx$zL  
} \Z~|ry0v{d  
f&5'1tG  
} RQg7vv]%  
5SOl:{A +  
冒泡排序: OH+kN /Fd  
qpjG_G5/  
package org.rut.util.algorithm.support; _'OXrT#Q  
SLGo/I*  
import org.rut.util.algorithm.SortUtil; :U>[*zE4&  
St`3Z/|h  
/** M9*#8>  
* @author treeroot q-tm `t*7  
* @since 2006-2-2 hW~XE{<  
* @version 1.0 0 rge]w.X  
*/ Qg^Ga0Lf6  
public class BubbleSort implements SortUtil.Sort{ 3n ~n-Jo  
j*XhBWE?  
/* (non-Javadoc) aFfd!a" n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) coG_bX?e  
*/ a%FM)/oI|T  
public void sort(int[] data) { 0-VC$)S  
int temp; J/T$.*X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |:[ [w&R  
if(data[j] SortUtil.swap(data,j,j-1); IXA3G7$)  
} B:?MMXB  
} ; fOkR+  
} )c; YR}tC  
} }hoyjzv]L  
PjxZ3O  
} s2 8t'  
"bhF`,V  
选择排序: B_ x?s  
V DN@=/  
package org.rut.util.algorithm.support; 8x,{rS qq  
_/\U  
import org.rut.util.algorithm.SortUtil; cT&!_g#g  
j o+-  
/** 655OL)|cD6  
* @author treeroot =#z8CFq[O  
* @since 2006-2-2 #?^%#"~4H  
* @version 1.0 -G|?Kl  
*/ ZYMacTeJjg  
public class SelectionSort implements SortUtil.Sort { m,3H]  
&N+i3l6`  
/* eI#b%h  
* (non-Javadoc) Zb? u'Vm=u  
* tjId?}\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QGq8r>  
*/ O~udlVn<6  
public void sort(int[] data) { / %9DO  
int temp; s%Y8;D,~+  
for (int i = 0; i < data.length; i++) { \H&8.<HJ  
int lowIndex = i; dm(Xy'*iQ  
for (int j = data.length - 1; j > i; j--) { OZ SM2~  
if (data[j] < data[lowIndex]) { c04;2gR  
lowIndex = j; ;1[a*z<l&s  
} 50E?K!  
} l>t0 H($  
SortUtil.swap(data,i,lowIndex); 8mh@C6U  
} .,l4pA9v  
} J^y}3ON  
-u nK;  
} zn3]vU!  
nD5+&M0  
Shell排序: ag* 5fBF  
Y<WA-dYoF  
package org.rut.util.algorithm.support; >;NiG)Z  
XusTU  
import org.rut.util.algorithm.SortUtil; T=W;k<P\k  
8N,mp>~  
/** '<R::M,  
* @author treeroot <_8p6{=  
* @since 2006-2-2 Z;"YUu[(  
* @version 1.0 7] }2`^9  
*/ )?$zY5  
public class ShellSort implements SortUtil.Sort{ Q&?^eOI&#(  
\r5L7y$9 h  
/* (non-Javadoc) UzKB"Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UNO KK_  
*/ ;x|LB>.  
public void sort(int[] data) { Pxy+W*t  
for(int i=data.length/2;i>2;i/=2){ x^XP<R{D  
for(int j=0;j insertSort(data,j,i); &`LR{7m  
} ;JHR~ TV  
} O,_k.EH  
insertSort(data,0,1); oa"_5kn,  
} \&,{N_G#L.  
j0.E!8Ae{  
/** G^W'mV$xl  
* @param data v1aE[Q  
* @param j x1'4njTV$  
* @param i 4R&e5!  
*/ dm~Uj  
private void insertSort(int[] data, int start, int inc) { 6$5?%ZLJ  
int temp; xWuvT,^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); cGUsao  
} }xb?C""q^q  
} o ?`LZd:{  
} % s),4  
yLY$1#Sa  
} 1x3>XN]a  
9:4m@dguh-  
快速排序: u 2%E(pr  
KfkU_0R+~v  
package org.rut.util.algorithm.support; vo!QJ  
{;^GKb+  
import org.rut.util.algorithm.SortUtil; 1>'xmp+#  
-E +LA  
/** zS/1v+  
* @author treeroot VC.zmCglo^  
* @since 2006-2-2 ?C`&*+  
* @version 1.0 E06)&tF  
*/ -A(]U"@n  
public class QuickSort implements SortUtil.Sort{ ('oA{,#L  
l\"wdS}  
/* (non-Javadoc) ,1e\}^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /1z3Q_M  
*/ r=cm(AHF  
public void sort(int[] data) { mXK7y.9\  
quickSort(data,0,data.length-1); j|DjO?._'  
} ,(v=ZeI  
private void quickSort(int[] data,int i,int j){ E/ {v6S{)Y  
int pivotIndex=(i+j)/2; 4OTrMT$y  
file://swap  <6STw  
SortUtil.swap(data,pivotIndex,j); 4sM9~zC5  
%uQOAe55  
int k=partition(data,i-1,j,data[j]); SpA-E/el  
SortUtil.swap(data,k,j); *OU&`\bmE  
if((k-i)>1) quickSort(data,i,k-1); O3En+m~3n)  
if((j-k)>1) quickSort(data,k+1,j); t+t D  
qL2Sv(A Z!  
} m2>$)\-;  
/** )>r sX)  
* @param data X ApSKJ  
* @param i 2"pFAQBw~i  
* @param j 1`F25DhhY  
* @return mBON>Z [4.  
*/ J}Ji /  
private int partition(int[] data, int l, int r,int pivot) { ~@%#eg  
do{ 7Rl/F1G o}  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); nPg,(8Tt  
SortUtil.swap(data,l,r); YtFH@M  
} ()ZP =\L  
while(l SortUtil.swap(data,l,r); K0^Tg+U($p  
return l; ?!;i/h*{  
} /?B%,$~  
[t+qYe8  
} P,*yuF|bk  
abtYa  
改进后的快速排序: byN4?3 F  
Nc\jA=  
package org.rut.util.algorithm.support; ' )~G2Ys  
jm&PGZ#n=R  
import org.rut.util.algorithm.SortUtil; Z,:}H6Mj9  
#]}]ZE  
/** (P|k$S?m  
* @author treeroot FKU)# Eo  
* @since 2006-2-2 j*L-sU  
* @version 1.0 39oI &D>8  
*/ m.&"D> \t  
public class ImprovedQuickSort implements SortUtil.Sort { 2bt).gGm  
+O?`uV  
private static int MAX_STACK_SIZE=4096; _qU;`Q  
private static int THRESHOLD=10; ~ea&1+Z[3  
/* (non-Javadoc) jUCDf-_ m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) evro]&N{  
*/ # |^yWw^  
public void sort(int[] data) { VdE$ig@  
int[] stack=new int[MAX_STACK_SIZE]; @q<d^]po  
is6d:p  
int top=-1; LR% P\~  
int pivot; mt]50}eK  
int pivotIndex,l,r; 3fq'<5 ^  
EE,C@d!*k7  
stack[++top]=0; m=qyPY  
stack[++top]=data.length-1; d'!abnF[d  
%R@&8  
while(top>0){ wt1Y&D  
int j=stack[top--]; y;ymyy&  
int i=stack[top--]; 3&5AbIZ  
[9,34/i  
pivotIndex=(i+j)/2; KD73Aw  
pivot=data[pivotIndex]; N51WY7  
YE[{Y(5;q  
SortUtil.swap(data,pivotIndex,j); |v@ zyOq&b  
(Z#j^}G_l  
file://partition {9|S,<9  
l=i-1; m:5x"o7)ln  
r=j; l ^;=0UR_  
do{ *$9Rb2}kK  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); KDu~,P]  
SortUtil.swap(data,l,r); *# ;  
} <59G  
while(l SortUtil.swap(data,l,r); ^#&PTq>  
SortUtil.swap(data,l,j); Bt(U,nFB  
=:(<lKf,<F  
if((l-i)>THRESHOLD){ #(1R:z\:  
stack[++top]=i; `(VVb@:o  
stack[++top]=l-1; S)W(@R+@4  
} wOrpp3I  
if((j-l)>THRESHOLD){ Gn>~CoFN  
stack[++top]=l+1; '$Fu3%ft  
stack[++top]=j; )!g@MHHL  
} of0 hJR  
+9]CGYj  
} /A>1TPb09"  
file://new InsertSort().sort(data); s p&g  
insertSort(data); XE?,)8  
} .7r$jmuFs  
/** ]X<L~s_*  
* @param data  "xp>Vj  
*/ b_GAK  
private void insertSort(int[] data) { '[Z.\   
int temp; Rq,Fp/  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dZ"d`M>o6  
} Rkh ^|_<!  
} $*vj7V_  
} * vP:+]  
Yy4l -}"  
} 0w ;#4X:m  
PLs(+>H  
归并排序: Ujfs!ikh&F  
vlx\hJ<I  
package org.rut.util.algorithm.support; )d7U3i  
"j%L*J)  
import org.rut.util.algorithm.SortUtil; aKk0kC   
A}z1~Z+  
/** oPC qv  
* @author treeroot &WHK|bl  
* @since 2006-2-2  !AFii:#  
* @version 1.0 X DAwE  
*/ MB3 N3,yL  
public class MergeSort implements SortUtil.Sort{ ;1L7+.A  
A S]jJc^  
/* (non-Javadoc) !?J?R-C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5gbD|^ij  
*/ 0=c:O  
public void sort(int[] data) { ~)%DiGW&  
int[] temp=new int[data.length]; t0+D~F(g  
mergeSort(data,temp,0,data.length-1); k{ibD5B  
} q-4#)EnW  
.R{+Pz D  
private void mergeSort(int[] data,int[] temp,int l,int r){ Aj "SSX!L  
int mid=(l+r)/2; 15wwu} X  
if(l==r) return ; HFTDea+#  
mergeSort(data,temp,l,mid); TDY =!  
mergeSort(data,temp,mid+1,r); C5&+1VrP  
for(int i=l;i<=r;i++){ _Rey~]iJJ8  
temp=data; +8|r_z\A5a  
} Wm>AR? b  
int i1=l; Ng+Ge5C9  
int i2=mid+1; VIg=| Oe),  
for(int cur=l;cur<=r;cur++){ Mp)|5<%  
if(i1==mid+1) +e( (!  
data[cur]=temp[i2++]; } f+hB  
else if(i2>r) ,7*-%05[\  
data[cur]=temp[i1++]; ~R\U1XXyUY  
else if(temp[i1] data[cur]=temp[i1++]; ]-tAgNzl%  
else 5 @61=Au  
data[cur]=temp[i2++]; hSfLNvK  
} C^!ej"  
} E K#ib  
f f_| 3G  
} $-;x8O]u  
A3mSSc6  
改进后的归并排序: k80!!S=_>  
;P2(C >|  
package org.rut.util.algorithm.support; <]kifiN#  
?8aPd"x  
import org.rut.util.algorithm.SortUtil; jG~UyzWH;  
V'XvwO@  
/** J&jig?t  
* @author treeroot z{dn   
* @since 2006-2-2 9S$?2z".2  
* @version 1.0 Oky9G C.a  
*/ qD/FxR-!  
public class ImprovedMergeSort implements SortUtil.Sort { a@U0s+V&a0  
v}-jls  
private static final int THRESHOLD = 10; {GM8}M~D&  
SWM6+i p  
/* +Y|HO[  
* (non-Javadoc) *r]Mn~3  
* f+D a W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8et.A  
*/ TLiA>`r=  
public void sort(int[] data) { B#9T6|2  
int[] temp=new int[data.length]; +yYSp8>  
mergeSort(data,temp,0,data.length-1); (y{nD~k  
} >m&r,z  
Dt8wd,B  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5 ,1q%  
int i, j, k; @dp1bkU  
int mid = (l + r) / 2; <u85>x  
if (l == r) =| M[JPr  
return; 20p/p~<  
if ((mid - l) >= THRESHOLD) (8/Qt\3jv  
mergeSort(data, temp, l, mid); -(YdK8  
else aok,qn'j  
insertSort(data, l, mid - l + 1); l#G }j^Q  
if ((r - mid) > THRESHOLD) #3o]Qo[Sc  
mergeSort(data, temp, mid + 1, r); 13:0%IO  
else 1F_ 1bAh$  
insertSort(data, mid + 1, r - mid); GDj ViAFm  
9XPQ1LSx  
for (i = l; i <= mid; i++) { !%_H1jk  
temp = data; ua!g}m~  
} h2C1'+Q{9  
for (j = 1; j <= r - mid; j++) { 0kB!EJ<OdG  
temp[r - j + 1] = data[j + mid]; M`kR2NCi  
} ,"!P{c  
int a = temp[l]; 6X.lncE@p  
int b = temp[r]; !rMl" Y[  
for (i = l, j = r, k = l; k <= r; k++) { 4$<-3IP,  
if (a < b) { ^>fjURR  
data[k] = temp[i++]; 7,N>u8cTh  
a = temp; #Zy-X_r  
} else { DG $._  
data[k] = temp[j--]; d^<a)>5h  
b = temp[j]; 4?a!6  
} 2 !^[x~t  
} `X7ns?  
} M1f ^Lx  
StuDtY  
/** \PB~ 6  
* @param data 044*@a5f  
* @param l [ZP8l'?  
* @param i +=bGrn>h  
*/ fjAJys)Q  
private void insertSort(int[] data, int start, int len) { Oy!j`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); HLy}ta\  
} (gl/NH!  
} @BZ6{@*  
} Q`]E l<$  
} "jUr[X2J  
vZns,K#4H\  
堆排序: U-#t&yjh#  
$LF  
package org.rut.util.algorithm.support; Bjz\L0d  
s2@}01QPo  
import org.rut.util.algorithm.SortUtil; _~`\TS8  
]<;m;/ H  
/** Svmyg]  
* @author treeroot S)0bu(a`Z,  
* @since 2006-2-2 t;@VsQ8  
* @version 1.0 Pb|'f(  
*/ LyB$~wZx~@  
public class HeapSort implements SortUtil.Sort{ EMe6Z!k  
a9q68  
/* (non-Javadoc) wOy1i/oj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y^gazr"  
*/ Upr:sB  
public void sort(int[] data) { 6 1Nj&1Ze  
MaxHeap h=new MaxHeap(); $e|G#mMd-  
h.init(data); w\'Zcw,d  
for(int i=0;i h.remove(); rZy38Wo  
System.arraycopy(h.queue,1,data,0,data.length); *My?l75  
} 3d.JV'C'c  
C'hI{4@P  
private static class MaxHeap{ _|ucC$*  
WRJ+l_81  
void init(int[] data){ .d5|Fs~B  
this.queue=new int[data.length+1]; 9_rNJLj8y  
for(int i=0;i queue[++size]=data; pQxaT$  
fixUp(size); .6[xX?i^T  
} =>hq0F4[;  
} WG;1[o&  
?'K}bmdt}.  
private int size=0; 0C}7=_?  
MO :##C  
private int[] queue; QK\QvU2y  
}B_n}<tjD  
public int get() { ~$f+]7  
return queue[1]; (9BjZ&ej  
} ?J+[|*'yK  
~u&3Ki*x  
public void remove() { 0*%j6*XDq9  
SortUtil.swap(queue,1,size--); ? kew[oZ  
fixDown(1); 6-#f1D 6  
} qoMYiF}/e  
file://fixdown DFs J}` $  
private void fixDown(int k) { uKqN  
int j; B:tST(  
while ((j = k << 1) <= size) { I C9:&C[  
if (j < size %26amp;%26amp; queue[j] j++; B7TA:K  
if (queue[k]>queue[j]) file://不用交换 2C %{A  
break; ' %OQd?MhL  
SortUtil.swap(queue,j,k); }VE[W  
k = j; O!z H5  
} e+=Ojo#  
} kRskeMr:Rd  
private void fixUp(int k) { qqSk*oH~  
while (k > 1) { T IPb ]  
int j = k >> 1; uG3t%CmN  
if (queue[j]>queue[k]) A0M)*9 f  
break; g!7/iKj:  
SortUtil.swap(queue,j,k); DT(A~U<y  
k = j; v|jBRKU99  
} E`>-+~ZUsk  
} 9p(s FQ [  
SPL72+S`,  
} 6Pl$DSu  
T"t3e=xA  
} +J$[RxQ#  
d>  Y9g  
SortUtil: au5 74tj  
:n>m">4  
package org.rut.util.algorithm; >i]r,j8!  
!:`QX\Ux  
import org.rut.util.algorithm.support.BubbleSort; B{QY-F~  
import org.rut.util.algorithm.support.HeapSort; E/LR(d_  
import org.rut.util.algorithm.support.ImprovedMergeSort; 1bd(JL  
import org.rut.util.algorithm.support.ImprovedQuickSort; ro6peUL*2`  
import org.rut.util.algorithm.support.InsertSort; uKh),@JV  
import org.rut.util.algorithm.support.MergeSort; ]BCH9%zLj  
import org.rut.util.algorithm.support.QuickSort; gOO\` #  
import org.rut.util.algorithm.support.SelectionSort; .0#?u1gXsX  
import org.rut.util.algorithm.support.ShellSort; S8<O$^L^  
R{@WlkG}  
/** hti)<#f  
* @author treeroot "VkraB.i  
* @since 2006-2-2 $t-HJ<!  
* @version 1.0 .BlGV2@^#  
*/ T\b e(@r  
public class SortUtil { tp_*U,  
public final static int INSERT = 1; ]gkI:scPA  
public final static int BUBBLE = 2; h5x FP  
public final static int SELECTION = 3; pF#nj`L  
public final static int SHELL = 4; =4/lJm``  
public final static int QUICK = 5; I9ubVcV8  
public final static int IMPROVED_QUICK = 6; 2@1A,  
public final static int MERGE = 7; sju. `f>-r  
public final static int IMPROVED_MERGE = 8;  {k}S!T  
public final static int HEAP = 9; <"AP&J'H  
J^ryUO o}b  
public static void sort(int[] data) { ,S:LhgSP  
sort(data, IMPROVED_QUICK); zfO0+fMH  
} znFa4  
private static String[] name={ MaXgy|yB1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" r3/H_Z  
}; V;~W,o!  
=wPl;SDf!  
private static Sort[] impl=new Sort[]{ cW26TtU(  
new InsertSort(), D +N{'d?+  
new BubbleSort(), lEAN Nu  
new SelectionSort(), >Rjk d>K3  
new ShellSort(), O@'/B" &  
new QuickSort(), xg/3*rL  
new ImprovedQuickSort(), ]gHw;ry  
new MergeSort(), %-i2MK'A  
new ImprovedMergeSort(), QgC  
new HeapSort() ; @-7'%(C  
}; 2ME3=C  
#)hM]=,e  
public static String toString(int algorithm){ \$V~kgQ0  
return name[algorithm-1]; z(aei(U=  
} y0M^oLx  
b(I-0<  
public static void sort(int[] data, int algorithm) { :U0z;  
impl[algorithm-1].sort(data); eFp4MD8?  
} %w=*4!NWb  
O]~cv^  
public static interface Sort { VW I{ wC  
public void sort(int[] data); =\ iV=1iB  
} 6^s=25>p  
:7<spd(%"  
public static void swap(int[] data, int i, int j) { n87B[R  
int temp = data; x;99[C!$  
data = data[j]; +S5"4<  
data[j] = temp; \d2Ku10v[  
} ; ob>$ _  
} *ELbz}Q  
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