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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。 gb(#DbI  
插入排序: \OA L Or  
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package org.rut.util.algorithm.support; 6%UY1Q.?  
\ j:AR4  
import org.rut.util.algorithm.SortUtil; 3fl7~Lw,  
/** wonYm27f  
* @author treeroot F1J#Y$q~L  
* @since 2006-2-2 IX.sy  
* @version 1.0 {lMqcK  
*/ j-6v2MH  
public class InsertSort implements SortUtil.Sort{ UO1$UF! QC  
k% NrL@z  
/* (non-Javadoc) ki3 HcV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -O%[!&`  
*/ q}s K  
public void sort(int[] data) { &rP~`4Mkp  
int temp; @Kp1k> ov  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =Sa~\k+  
} #'8)u)!  
} # \<P]<C  
} u uSHCp  
F3 Y<ZbxT  
} 0Nt%YP  
.*:h9AE7vo  
冒泡排序: |,{+;:  
PqI![KxZW  
package org.rut.util.algorithm.support; %z2oDAjX  
:l;,m}#@  
import org.rut.util.algorithm.SortUtil; 6&mWIk^VC  
-F1P2 8<?  
/** 0$l&i=L  
* @author treeroot &1~Re.* B  
* @since 2006-2-2 V(DjF=8  
* @version 1.0 F^xaz^=`u  
*/ !]G jIT]Oh  
public class BubbleSort implements SortUtil.Sort{ 0JyqCb l  
l@#b;M/  
/* (non-Javadoc) Kk`<f d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G>JxIrN0  
*/ J+i X,X  
public void sort(int[] data) { Zik m?(J  
int temp; ]| z")gOE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ WSS(Bm|B  
if(data[j] SortUtil.swap(data,j,j-1); sSV^5  
} w~]} acP  
} F=: c5z  
} Txu>/1N,  
} `BpCRKTG  
Lg b  
} 1 0V+OIC  
FbuKZp+  
选择排序: q 7`   
B6uf;Yc  
package org.rut.util.algorithm.support; gkLr]zv  
oW8;^u  
import org.rut.util.algorithm.SortUtil; OoSa95#x  
*5^ze+:  
/** `u$24h'!  
* @author treeroot CM"s9E8y  
* @since 2006-2-2 ;2BPPZ  
* @version 1.0 f)WPOTEY  
*/ /CbkqNV  
public class SelectionSort implements SortUtil.Sort { r &=r/k2  
;=#qHo9k1%  
/* Xz" JY  
* (non-Javadoc) .N&QW `  
* /%;/pi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]Px:d+wX:  
*/ XGL"gD   
public void sort(int[] data) { y^ 3,X_0  
int temp; R4yJ.f  
for (int i = 0; i < data.length; i++) { ,d5ia4\K  
int lowIndex = i; nMeSCX  
for (int j = data.length - 1; j > i; j--) { S~}$Ly@  
if (data[j] < data[lowIndex]) { fq{I$syY  
lowIndex = j; 2AmR(vVa"  
}  eMztjN  
} \/pVcR  
SortUtil.swap(data,i,lowIndex); Qve`k<Cj"  
} K:C+/O  
} 7~:>WMv9  
Kgps_tY%  
} j_hjCQ  
oA[2)BU  
Shell排序: qgh]@JJh  
dnk1Mu<  
package org.rut.util.algorithm.support; {XyG1  
dr}O+7_7%-  
import org.rut.util.algorithm.SortUtil; ud 5x$`  
v!iWzN  
/** ^j1Gmv)  
* @author treeroot )_WH#-}  
* @since 2006-2-2 sY&r bJ(P  
* @version 1.0 Idt@Hk5<&  
*/ zv>ZrFl*  
public class ShellSort implements SortUtil.Sort{ Z5 w`-#  
MI?]8+l  
/* (non-Javadoc) qEPf-O:lm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A5`#Ot*3  
*/ l[:^TfB  
public void sort(int[] data) { jD$;q7fB  
for(int i=data.length/2;i>2;i/=2){ |P^ikx6f5  
for(int j=0;j insertSort(data,j,i); zaQ$ Ht  
} 3~#ZE;>#  
} 6="M0%  
insertSort(data,0,1); 2nVuz9h  
} 9(V=Ubj  
+*WUH513  
/** 6f<*1YR F  
* @param data 7m vSo350  
* @param j \nn56o@eN  
* @param i iLc)"L-i  
*/ ~]jx+6k]  
private void insertSort(int[] data, int start, int inc) { N.ItyV  
int temp; EG8%~k+R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "0p +SZ~D  
} HE8'N=0  
} *)2x&~T*|  
} "'Q$.sR  
g9RzzE!  
} Djg 1Qh  
|E>v~qD8I  
快速排序: e-YGuWGN7  
P TfN+  
package org.rut.util.algorithm.support; e<&_tx   
? Yynd  
import org.rut.util.algorithm.SortUtil; /r #b  
U0lqGEZ  
/** $sB48LJuU'  
* @author treeroot My`josJ`Pb  
* @since 2006-2-2 $fq-wl-=  
* @version 1.0 n3-GnVC][  
*/ 4+Li)A:4.  
public class QuickSort implements SortUtil.Sort{ LbLbJ{68  
T +|J19  
/* (non-Javadoc) >"2\D|-/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S}XB |  
*/ 1t} (+NNjH  
public void sort(int[] data) { E1mI Xd;.  
quickSort(data,0,data.length-1); BZnp #}f  
} N> uZt2  
private void quickSort(int[] data,int i,int j){ b7F3]W<`&  
int pivotIndex=(i+j)/2; z/Mhu{ttL  
file://swap 9P,A t8V(  
SortUtil.swap(data,pivotIndex,j); oRtY?6^$  
bqf]$}/8k  
int k=partition(data,i-1,j,data[j]); %tklup]LF8  
SortUtil.swap(data,k,j); dK-  ^  
if((k-i)>1) quickSort(data,i,k-1); :~qtvs;{  
if((j-k)>1) quickSort(data,k+1,j);  Y,<WX v  
;@=@N9q K  
} |1\dCE03}  
/** + 3~Gc<OO  
* @param data giA~+m~fN  
* @param i Z`0r]V`Ys  
* @param j 3\+[38 _  
* @return VdjU2d  
*/ ;'Z,[a  
private int partition(int[] data, int l, int r,int pivot) { Q9Xm b2LN  
do{ ]e#,\})Br  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \6nQ-S_  
SortUtil.swap(data,l,r); wnZ*k(  
} Xm0&U?dZB  
while(l SortUtil.swap(data,l,r); A1=$kzw{UH  
return l; [xp~@5r'  
} 9phD5b~j  
@h z0:ezg:  
} _mI:Lr#dT  
Y`[HjS,  
改进后的快速排序: l72i e  
hCOy\[2$  
package org.rut.util.algorithm.support;  5Fl  
H8=vQy  
import org.rut.util.algorithm.SortUtil; !pF KC)  
4IGQ,RTB  
/**  HC<BGIgL  
* @author treeroot \|b1s @c8  
* @since 2006-2-2 M25z<Y  
* @version 1.0 f0fqDmn  
*/ Xy KKD&j  
public class ImprovedQuickSort implements SortUtil.Sort { s1*WK&@  
D; 35@gtj  
private static int MAX_STACK_SIZE=4096; \e5,`  
private static int THRESHOLD=10; $HR(|{piZ  
/* (non-Javadoc) (0+GLI8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OA8b_k~  
*/ F~uA-g  
public void sort(int[] data) { %l]rQjV-  
int[] stack=new int[MAX_STACK_SIZE]; `)gkkZ$)j  
W0r5D9k  
int top=-1; n<"a+TTU  
int pivot; ! A ydhe  
int pivotIndex,l,r; 'piF_5(@  
B2Awdw3=g  
stack[++top]=0; S|u1QGB  
stack[++top]=data.length-1; KzFs#rhpn  
V }r_   
while(top>0){ UU:QK{{E  
int j=stack[top--]; 0I ND9h. %  
int i=stack[top--]; Z:o' +oh  
v'2OHb#  
pivotIndex=(i+j)/2; Kw5+4R(5  
pivot=data[pivotIndex]; bju,p"J1-E  
"351s3ff  
SortUtil.swap(data,pivotIndex,j); ]a Ma*fF  
~]t2?SqNm  
file://partition yI)RG OV  
l=i-1; (/rIodHJO  
r=j; 3 v,ae7$U&  
do{ F" #3s=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ju2X*  
SortUtil.swap(data,l,r); L^ jC& dF  
} X:} 5L> '  
while(l SortUtil.swap(data,l,r); SJ|.% gn  
SortUtil.swap(data,l,j); 5IF~]5s  
BX)cV  
if((l-i)>THRESHOLD){ W~@GK  
stack[++top]=i; %_X[{(  
stack[++top]=l-1; =w>>7u$4  
} 4@V<Suw  
if((j-l)>THRESHOLD){ B #V 4  
stack[++top]=l+1; m#}{"d&J  
stack[++top]=j;  "lnk  
} + 1%^c(3  
=jd=Qs IL  
} pa> 2JF*  
file://new InsertSort().sort(data); rQQPs\o  
insertSort(data); ^ {]sD}Q"  
} HuLm!tCu  
/** fB ,!|u  
* @param data Tk@g9\6O9  
*/ {CyPcD'$s  
private void insertSort(int[] data) { C?<XtIoB  
int temp; }JTgj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .^+$w $  
} 2W-NCE%K)T  
} ^}pREe c=  
} EpS8,[w  
t;~`Lm@hY  
} kGTc~p(  
 Vgb>3]SU  
归并排序: 9,a,A6xry  
3b/vyZF  
package org.rut.util.algorithm.support; DDCQAf  
@IKe<{w  
import org.rut.util.algorithm.SortUtil; 8LM1oal}  
C5n=2luI_  
/** Oj|p`Dzh  
* @author treeroot lL+^n~g  
* @since 2006-2-2 TXOW/{B  
* @version 1.0 M>z7H"jCu  
*/ Q1&dB{L  
public class MergeSort implements SortUtil.Sort{ B+H9c~3$  
rls#g w  
/* (non-Javadoc) /WgWe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T|iF/p]F  
*/ -v+^x`HR  
public void sort(int[] data) { 0*M}QXt  
int[] temp=new int[data.length]; GpQF * x  
mergeSort(data,temp,0,data.length-1); EYD{8Fw-  
} fvfVBk#  
o 0 #]EMr  
private void mergeSort(int[] data,int[] temp,int l,int r){ U$JIF/MO_  
int mid=(l+r)/2; WsDe0F  
if(l==r) return ; R3!vS+5rR  
mergeSort(data,temp,l,mid); X|B;>q  
mergeSort(data,temp,mid+1,r); < 3+&DV-<N  
for(int i=l;i<=r;i++){ h}<ZZ  
temp=data; M[N.H9  
} t4c#' y  
int i1=l; imq(3?  
int i2=mid+1; =]mx"0i[  
for(int cur=l;cur<=r;cur++){ =sVt8FWGY  
if(i1==mid+1) Ck a]F2,  
data[cur]=temp[i2++]; c89vx 9  
else if(i2>r) L;t~rW!1  
data[cur]=temp[i1++]; [cAg'R6  
else if(temp[i1] data[cur]=temp[i1++]; k_^/   
else _5`S)G{  
data[cur]=temp[i2++]; 54DR.>O  
} X',0MBQ0  
} q _|5,_a  
?v~3zHK  
} *pUV-^uo  
xVX||rrh  
改进后的归并排序: ^aWNtY' :  
nL20}"$E  
package org.rut.util.algorithm.support; O;t?@!_  
AFUl   
import org.rut.util.algorithm.SortUtil; R*fR?  
myX0<j3G5  
/** j;'Wf[V  
* @author treeroot I_s(yO4pw  
* @since 2006-2-2 X[Gk!d r#  
* @version 1.0 QNwAuH T  
*/ r:rJv  
public class ImprovedMergeSort implements SortUtil.Sort { fzG1<Gem  
]H7Mx\  
private static final int THRESHOLD = 10; 5kNs@FP  
<5vB{)Tq  
/* ;!sGfrs 0$  
* (non-Javadoc) r@UY$z  
*  M.^A`   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `bF;Ew;  
*/ =_6h{f&Q  
public void sort(int[] data) { ?O Nw*"9  
int[] temp=new int[data.length]; y.<Y]m  
mergeSort(data,temp,0,data.length-1); 3m7V6##+  
} )Dpt<}}\  
Z-!T(:E]  
private void mergeSort(int[] data, int[] temp, int l, int r) { [&s:x ,  
int i, j, k; ; O0rt1  
int mid = (l + r) / 2; -RDs{c`y%N  
if (l == r) @ &yj7-]  
return; ebK wCZwK*  
if ((mid - l) >= THRESHOLD) agD.J)v\  
mergeSort(data, temp, l, mid); MCG~{#`  
else Q kpmPQK  
insertSort(data, l, mid - l + 1); HN@)/5BY  
if ((r - mid) > THRESHOLD) a/#,Y<kJ  
mergeSort(data, temp, mid + 1, r); UH|.@7w  
else BQg]$Tr?  
insertSort(data, mid + 1, r - mid); gP%!  
@!O{>`  
for (i = l; i <= mid; i++) { Z"T(8>c;g  
temp = data; .LHe*JC  
} P?7b,a95O  
for (j = 1; j <= r - mid; j++) { >AFpO*q"  
temp[r - j + 1] = data[j + mid]; f`rz)C03  
} U# B  
int a = temp[l]; R/|{?:r?:x  
int b = temp[r]; AE _~DZ:%c  
for (i = l, j = r, k = l; k <= r; k++) { dig76D_[e  
if (a < b) { ^k##a-t<_>  
data[k] = temp[i++]; Jz'+@q6h  
a = temp; K 5[ 3WHQ  
} else { bOKNWI   
data[k] = temp[j--]; giJyMd}x  
b = temp[j]; RVx<2,['  
} k<qH<<r*  
} .CpO+z  
} l/NK.Jr  
XS/TYdXB8  
/** s$6#3%h  
* @param data |_m;@.44?U  
* @param l Ka{Zoi]  
* @param i 5Oq;V: 7  
*/ Ts6X:D4,  
private void insertSort(int[] data, int start, int len) { V1;-5L75  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0n=E.qZ9c  
} Gzt5efygKt  
} oFp&j@`k8j  
} sAlgp2-  
} ztpb/9J9  
k]g\` gc  
堆排序: {jG`l$$  
i[#Tn52D  
package org.rut.util.algorithm.support; DBDfB b  
jp`N%O]6  
import org.rut.util.algorithm.SortUtil; `_)dEu  
;0gpS y$#  
/** mo$*KNW%\  
* @author treeroot k>`X! "  
* @since 2006-2-2 &pz8vWCk  
* @version 1.0 yqwr0yDAl  
*/ v g]&T  
public class HeapSort implements SortUtil.Sort{ p6)UR~9Rs  
p<e~x/@m*  
/* (non-Javadoc) A[bxxQSP\H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _3S{n=9  
*/ cpVi9]  
public void sort(int[] data) { }JsdgO&z  
MaxHeap h=new MaxHeap(); l!,{bOZ  
h.init(data); Ls{fCi/2F  
for(int i=0;i h.remove(); jFfki.H  
System.arraycopy(h.queue,1,data,0,data.length); cj *4 XYu  
} ,YTIYG](  
p2K9R4  
private static class MaxHeap{ gK CIfxM  
"Wp<^ssMo  
void init(int[] data){ Le!I-i( aD  
this.queue=new int[data.length+1]; < r~Tj  
for(int i=0;i queue[++size]=data; KK6YA  
fixUp(size); ?Dm&A$r  
} qfU3Cwy  
} }d(6N&;"zN  
u@B"*V~K  
private int size=0; n21J7;\/+  
lTXU  
private int[] queue; #UQ[8e  
sh1()vT  
public int get() { U|nk8 6r  
return queue[1]; i}19$x.D`  
} 8Yh2K}  
f/ZE_MN2  
public void remove() { f]}F_]  
SortUtil.swap(queue,1,size--); 3[rB:cE/  
fixDown(1); [6|vx},N  
} NL 37Y{b  
file://fixdown `upNP/,  
private void fixDown(int k) { k s}o9[D3  
int j; 51vK>  
while ((j = k << 1) <= size) { :y)'qv[  
if (j < size %26amp;%26amp; queue[j] j++; FcA0 \`0M  
if (queue[k]>queue[j]) file://不用交换 p* @L1  
break; 6_Kz}PQ  
SortUtil.swap(queue,j,k); q}jf&xUWzH  
k = j; $((<le5-)  
} ZE^de(Fm  
} p98lu'?@  
private void fixUp(int k) { & \m\QI  
while (k > 1) { UL/>t}AG  
int j = k >> 1; P7b2I=t  
if (queue[j]>queue[k]) ,o)MiR9-[A  
break; ,n*.Yq  
SortUtil.swap(queue,j,k); 5kF5`5+Vj  
k = j; >@"j9  
} !NCT) #G`  
} M<"D!h9YP  
l- l}xBf  
} B.?yHaMI[  
iJi|*P5dw  
} m_B5M0},  
vF,l?cU~  
SortUtil: ( nh!tC  
 J{y@ O  
package org.rut.util.algorithm; T*IudxW  
i ,'~Ds  
import org.rut.util.algorithm.support.BubbleSort; yrjm0BM#  
import org.rut.util.algorithm.support.HeapSort; ;%1^k/b6t  
import org.rut.util.algorithm.support.ImprovedMergeSort; .<.qRq-  
import org.rut.util.algorithm.support.ImprovedQuickSort; pqe**`z@y  
import org.rut.util.algorithm.support.InsertSort; "hfwj`U  
import org.rut.util.algorithm.support.MergeSort; I9 E@2[=!  
import org.rut.util.algorithm.support.QuickSort; RA6D dqT~  
import org.rut.util.algorithm.support.SelectionSort; C\{4<:<_&  
import org.rut.util.algorithm.support.ShellSort; !cZsIcIe  
89paR[  
/** ZZTV >:  
* @author treeroot Lh}he:k+  
* @since 2006-2-2 wb}tN7~Y;  
* @version 1.0 9YJb~tuZ73  
*/ b%kh:NV{S  
public class SortUtil { 181P;R=}<  
public final static int INSERT = 1; t`AD9 H"\!  
public final static int BUBBLE = 2; N]duv~JS  
public final static int SELECTION = 3; 1jL?z6S  
public final static int SHELL = 4; g_=Q=y@,  
public final static int QUICK = 5; ^.(]i \V_  
public final static int IMPROVED_QUICK = 6; "a: ;  
public final static int MERGE = 7; $?\],T  
public final static int IMPROVED_MERGE = 8; J0#% *B  
public final static int HEAP = 9; ^tah4QmUA  
zE[c$KPP  
public static void sort(int[] data) { N(9'U0z  
sort(data, IMPROVED_QUICK); k2=uP8  
} mT.F$Y9  
private static String[] name={ B$bsh.  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h2q]!01XP  
}; \o^+'4hq<5  
% ;<FfS  
private static Sort[] impl=new Sort[]{ ?o4&cCFOE  
new InsertSort(), '/j`j>'!^  
new BubbleSort(), G > ,rf ]N  
new SelectionSort(), 3t,SXI @  
new ShellSort(), ?d %_o@  
new QuickSort(), 2d._X$fx7  
new ImprovedQuickSort(), [ACYd/  
new MergeSort(), G2Apm`/ y  
new ImprovedMergeSort(), aQ)9<LsI  
new HeapSort() `drvu?F  
}; uk1IT4+  
C.@zVt  
public static String toString(int algorithm){ lY1m%  
return name[algorithm-1]; oqj3Q 1  
} C?B7xK  
IOA{l N6  
public static void sort(int[] data, int algorithm) { ri:fo'4TO  
impl[algorithm-1].sort(data); |9y &;3  
} ~ e"^-x  
NlKnMgt~  
public static interface Sort { T>c;q%A/  
public void sort(int[] data); sLTf).xh  
} WDZEnauE  
.Ybm27Dk  
public static void swap(int[] data, int i, int j) { F kWJB>  
int temp = data; ^I0SfZ'Y  
data = data[j]; xWDwg@ P  
data[j] = temp; ?*T`a oB  
} +z4NxR   
} EU+sTe>  
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