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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。 hU6oWm  
插入排序: !!?TkVyEyM  
~EtwX YkRZ  
package org.rut.util.algorithm.support;  x>$e*  
]+A%3 7  
import org.rut.util.algorithm.SortUtil; 7-#   
/** #Ic)]0L  
* @author treeroot y7~y@2  
* @since 2006-2-2 o&ETs)n|  
* @version 1.0 +^|_vq^XR  
*/ ,8 G6q_ud  
public class InsertSort implements SortUtil.Sort{ T7~H|%  
?/|KM8  
/* (non-Javadoc) '8w>=9Xl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a&RH_LjM  
*/ )9i$ 1"a(  
public void sort(int[] data) { MUn(ZnQy|  
int temp; z}w7X6&e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #pcgfVl  
} `IV7\}I|  
} R9\ )a2  
} Yhte&,D"  
n#^ii/H  
} h?'~/@  
'e/wjV  
冒泡排序: @L$!hTaP  
dVe,;?+A  
package org.rut.util.algorithm.support;  G& m~W  
je8 5G`{DC  
import org.rut.util.algorithm.SortUtil; s>*xAIx  
<.".,Na(J0  
/** i93 6+[  
* @author treeroot V:h7}T95  
* @since 2006-2-2 f~ wgMp.W0  
* @version 1.0 f0&%  
*/ Q$(Fm a4a  
public class BubbleSort implements SortUtil.Sort{ ZeLed[J^xJ  
!|\l*  
/* (non-Javadoc) 4-m6e$p;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OE*Y%*b  
*/ zf;sdQ;4  
public void sort(int[] data) { '^)}"sZ@G  
int temp; =M=v; ,I-  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &-Ylj  
if(data[j] SortUtil.swap(data,j,j-1); Z C<+BKS  
} G>Hg0u0!,  
} $b(CN+#  
} Z@(KZ|  
} g%<n9AUl  
LUdXAi"f  
} !_P&SmK3  
;SIWWuk  
选择排序: u4j"U6"]M  
Y>6N2&Q  
package org.rut.util.algorithm.support; -Xx4:S  
pX+4B=*  
import org.rut.util.algorithm.SortUtil; V503  
Y (p Ud3y  
/** T+e*'<!O  
* @author treeroot .cm2L,1h  
* @since 2006-2-2 ocu,qL)W  
* @version 1.0 m?kyAW'|  
*/ [ ou$*  
public class SelectionSort implements SortUtil.Sort { y @S_CB 47  
iX[g  
/* k.z(.uc=  
* (non-Javadoc) <RKT |  
* "}V_.I* +  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @VPmr}p:{  
*/ u*/+cT  
public void sort(int[] data) { pH3<QNq5  
int temp; PMUW<UI  
for (int i = 0; i < data.length; i++) { Z&O6<=bg!  
int lowIndex = i; tzthc*-<  
for (int j = data.length - 1; j > i; j--) { jD${ZIv  
if (data[j] < data[lowIndex]) { SA7(EJ95  
lowIndex = j; `/^ _W <  
} M*f]d`B  
} P?S]Q19Q4  
SortUtil.swap(data,i,lowIndex); s VHk;:e>x  
} sn"z'=ch  
} xv&h>GOg  
hD=.rDvO  
} |c^?tR<  
1je j7p>K  
Shell排序: <v'&Pk<  
)U=]HpuzI  
package org.rut.util.algorithm.support; ]IEZ?+F,  
<z\`Ma  
import org.rut.util.algorithm.SortUtil; ?U{<g,^  
^GyZycch  
/** 2,wwI<=E'  
* @author treeroot N<1+aL\  
* @since 2006-2-2 BM'!odRv  
* @version 1.0 2?SbkU/3|P  
*/ 'NZ=DSGIy  
public class ShellSort implements SortUtil.Sort{ kRc+OsY9  
xx(C$wCJ  
/* (non-Javadoc) R<U]"4CBx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1X&.po  
*/ BM`6<Z"3q  
public void sort(int[] data) { 5dB62dqN  
for(int i=data.length/2;i>2;i/=2){ ] |nW  
for(int j=0;j insertSort(data,j,i); R3;%eyu  
} lPI~5N8  
} 15hqoo9!  
insertSort(data,0,1); Fj(GyPFG  
} px "H  
X\/M(byn  
/** u>n"FL 'e  
* @param data bMxK@$G~  
* @param j |-G2pu;  
* @param i BjeD4  
*/ 0~z\ WSo  
private void insertSort(int[] data, int start, int inc) { X fqhD&g  
int temp; fP V n;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?:ZB'G{%E  
} }Uwji  
} DL?nvH  
} Z Cjw)To(  
I{jvUYrKH  
} )9:5?,SO  
EG;E !0  
快速排序:  RQb}t,  
@1Q-.54a  
package org.rut.util.algorithm.support; `/ayg:WSU  
P/girce0  
import org.rut.util.algorithm.SortUtil; 0'fswa)  
XS">`9o!  
/** kJp~'\b  
* @author treeroot Ff%V1BH[  
* @since 2006-2-2 -X~mW  
* @version 1.0 dWPQp*f2  
*/ `r-jWK\  
public class QuickSort implements SortUtil.Sort{ \?d3Pn5`  
u }gavG l  
/* (non-Javadoc) 6oNcj_?7?q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #5Z`Q^  
*/ X 3$ W60Q  
public void sort(int[] data) { yjg&/6  
quickSort(data,0,data.length-1); 6FQi=}O1  
} 8.#{J&h  
private void quickSort(int[] data,int i,int j){ s:Ml\['x  
int pivotIndex=(i+j)/2; +7^p d9F.  
file://swap 8&)v%TX  
SortUtil.swap(data,pivotIndex,j); 1(Ta*"(0Ip  
G$+v |z  
int k=partition(data,i-1,j,data[j]); $KO2+^%y  
SortUtil.swap(data,k,j); uI)twry]@  
if((k-i)>1) quickSort(data,i,k-1); RI0^#S_{  
if((j-k)>1) quickSort(data,k+1,j); B-R#?Xn:!I  
:Ko6.|  
} ~vFa\7sf  
/** ^k;]"NR  
* @param data L meP J  
* @param i RhH 1nf2UR  
* @param j S@FO&o 0  
* @return eZLEdTScM  
*/ 4=xi)qF/@  
private int partition(int[] data, int l, int r,int pivot) { kkF)Tro\  
do{ <4"-tYa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); La;G S  
SortUtil.swap(data,l,r); Aw |;C  
} 6 :] N%  
while(l SortUtil.swap(data,l,r); l9Ir@.m  
return l; zKO7`.*  
} Dj&~x  
S{rltT-  
} rP3HR 5  
&0Yg:{k$  
改进后的快速排序: UJ)pae  
2gPqB*H  
package org.rut.util.algorithm.support; d]pb1ECuu  
'7-Yo Q  
import org.rut.util.algorithm.SortUtil; %w*)7@,+-  
//U1mDFT  
/** ?)xIn)#l s  
* @author treeroot W]9*dabem  
* @since 2006-2-2 ff\~`n~WZ  
* @version 1.0 @h%V:c  
*/ 4VWk/HK-!  
public class ImprovedQuickSort implements SortUtil.Sort { LH8jT  
ZgP%sF  
private static int MAX_STACK_SIZE=4096;  uZS:  
private static int THRESHOLD=10; Xv8-<Ks  
/* (non-Javadoc) L>1hiD&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xc:E>-  
*/ PgWWa*Ew  
public void sort(int[] data) { &X$T "Dp  
int[] stack=new int[MAX_STACK_SIZE]; =_7wd*,  
~2w&+@dV%  
int top=-1; <W80AJ  
int pivot; /SD}`GxH  
int pivotIndex,l,r; cqS :Zq  
{AL EK   
stack[++top]=0; n qcq3o*B  
stack[++top]=data.length-1; J:L+q} A  
s[yWBew  
while(top>0){ Cbw *? 9d  
int j=stack[top--]; (^d7K:-'  
int i=stack[top--]; Je1d|1!3  
jxh:z  
pivotIndex=(i+j)/2; WQK<z!W5  
pivot=data[pivotIndex]; m+kP"]v  
r ]DiB:.  
SortUtil.swap(data,pivotIndex,j); }TmOoi(X@  
FzT.9Vz7  
file://partition U(#<D7}  
l=i-1; {ez $kz  
r=j; t4WB^dHYp  
do{ 5p;AON  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); a1U|eLmUb  
SortUtil.swap(data,l,r); M"~jNe|  
} /4:bx#;A  
while(l SortUtil.swap(data,l,r); 1i76u!{U  
SortUtil.swap(data,l,j); B0fOAP1  
MtLWpi u@[  
if((l-i)>THRESHOLD){ XO <wK  
stack[++top]=i; ze+YQ F  
stack[++top]=l-1; RP4/:sO  
}  zUfq.   
if((j-l)>THRESHOLD){ L"bOc'GfQ  
stack[++top]=l+1; liKlc]oM  
stack[++top]=j; =q4}(  
} rFRcK>X\L  
I"07x'Ahq3  
} ^\\3bW9}H  
file://new InsertSort().sort(data); (#Y~z',I  
insertSort(data); Xn6#q3;^|  
} 8Bf >  
/** 3Vb4zZsl  
* @param data > H!sD\b  
*/ 6>>; fy2  
private void insertSort(int[] data) { Kc/1LeAik  
int temp; -aoYoJ '  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4T@:_G2b  
} _gvFs %J  
} ;[v!#+yml  
} 37#&:[w>  
)pB#7aEw  
} M tN>5k c  
|Wh3a#  
归并排序: oaY_6  
{f/qI`  
package org.rut.util.algorithm.support; f-ltV<C_  
*c0H_8e  
import org.rut.util.algorithm.SortUtil; @T'^V0!-q:  
XH%L]  
/** \iuR+I  
* @author treeroot zC?' Qiuh*  
* @since 2006-2-2 @,vmX z  
* @version 1.0 DD| 0?i  
*/ /sE,2X*BT  
public class MergeSort implements SortUtil.Sort{ (m~>W"x/  
= tv70d'  
/* (non-Javadoc) D tsZP (  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I= mz^c{  
*/ M&Uy42,MR  
public void sort(int[] data) { w+M/VsL  
int[] temp=new int[data.length]; {!"UBALxc  
mergeSort(data,temp,0,data.length-1); [BWq9uE  
} 54 lD+%E  
]%\,.&=hT  
private void mergeSort(int[] data,int[] temp,int l,int r){ +>ju,;4WK  
int mid=(l+r)/2; SQp|  
if(l==r) return ; ( xs'D4  
mergeSort(data,temp,l,mid); VF%QM;I[Rc  
mergeSort(data,temp,mid+1,r); !ifU}qFzK  
for(int i=l;i<=r;i++){ )H8_.]|  
temp=data; ;Rrh$Ag  
} %pC<T*f  
int i1=l; ,/;Ae w;  
int i2=mid+1; 1'kO{Ge*p:  
for(int cur=l;cur<=r;cur++){ X\}l" ]  
if(i1==mid+1) R+ * ; [  
data[cur]=temp[i2++]; zp:dArh0  
else if(i2>r) =Tj{)=^/#  
data[cur]=temp[i1++]; &,X}M  
else if(temp[i1] data[cur]=temp[i1++]; mG~_*8}e<  
else ?w3RqF@}  
data[cur]=temp[i2++]; =%Y1] F  
} YagfCi ?  
} k(gbUlCc  
K9!HW&?<|  
} }LHYcNw^z  
]33!obM  
改进后的归并排序: TO wd+]B  
%xt9k9=vZ  
package org.rut.util.algorithm.support; "TZq")-  
(lk9](;L  
import org.rut.util.algorithm.SortUtil; TCr4-"`r-{  
^Hd[+vAvR  
/** ( }-*irSsj  
* @author treeroot HiCh:IP7>/  
* @since 2006-2-2 EX8JlA\-W  
* @version 1.0 5mH [|_  
*/ _^NX`<&  
public class ImprovedMergeSort implements SortUtil.Sort { > p`,  
hFtV\xF K  
private static final int THRESHOLD = 10; .<x6U*)\O  
+8Xjk\Hi  
/* I!x.bp~V!  
* (non-Javadoc) KX) n+{   
* L2}\Ah"[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /6x&%G:m#  
*/ *"%TAe7?~+  
public void sort(int[] data) { ]\, ?u /  
int[] temp=new int[data.length]; ["-rD y P  
mergeSort(data,temp,0,data.length-1); {)YbksrJ{  
} @rl5k(  
X! d-"[  
private void mergeSort(int[] data, int[] temp, int l, int r) { Gh;\"Qx  
int i, j, k; mdi!Q1pS  
int mid = (l + r) / 2; {u'szO}k  
if (l == r) o`T.Zaik,  
return; $)lkiA&;  
if ((mid - l) >= THRESHOLD) KVi6vdgD  
mergeSort(data, temp, l, mid); ?N#I2jxaD  
else *?)MJ@  
insertSort(data, l, mid - l + 1); +! 1_Mt6  
if ((r - mid) > THRESHOLD) 1d^~KBfv  
mergeSort(data, temp, mid + 1, r); n,N->t$i  
else ,d"T2Hy  
insertSort(data, mid + 1, r - mid); &<&tdShI  
jqUVERbc  
for (i = l; i <= mid; i++) { i~@gI5[k+  
temp = data; \CB^9-V3  
} !np_B0`  
for (j = 1; j <= r - mid; j++) { |t,sK aL  
temp[r - j + 1] = data[j + mid]; $BqiC!~  
} (tK_(gO  
int a = temp[l]; sh/ ,"b2!P  
int b = temp[r]; |G j.E  
for (i = l, j = r, k = l; k <= r; k++) { _@5Xmr  
if (a < b) { _c5@)I~  
data[k] = temp[i++]; ]U?nYppV  
a = temp; }$ y.qqG  
} else { G[64qhTC  
data[k] = temp[j--]; ,@*5x'auK  
b = temp[j]; rH}|~  
} $LP(\T([  
} _i =*0Q  
} Z{8%Cln  
* #yF`_p  
/** K\xz|Gq  
* @param data V@'Xj .ze  
* @param l `M@ESA (e  
* @param i p=+Y7NE)  
*/ [(X~C*VdxM  
private void insertSort(int[] data, int start, int len) { 5'!fi]Z  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1+%UZK= K  
} .k#PrT1C  
} y?s z&*:  
} ZCCCuB  
} dc$zW^i  
Y3~Uz#`SU  
堆排序: r=j?0k '}]  
LkbD='\=  
package org.rut.util.algorithm.support; e=Ox~2S  
$tlBI:ay1  
import org.rut.util.algorithm.SortUtil; ^ AZ#tp%)  
b8!oZ~ K  
/** 6 AO(A *  
* @author treeroot 2;)IBvK  
* @since 2006-2-2 /xn|d#4  
* @version 1.0 2> a&m>  
*/ ,xwiJfG; ]  
public class HeapSort implements SortUtil.Sort{ \kE0h\  
ys=2!P-[#  
/* (non-Javadoc) 175e:\Tw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %1&X+s3  
*/ G^'We6<  
public void sort(int[] data) { g;l K34{  
MaxHeap h=new MaxHeap(); kNuvJ/St  
h.init(data); ^-%'ItVO  
for(int i=0;i h.remove(); 8\J$\Edv  
System.arraycopy(h.queue,1,data,0,data.length); l;-2hZ  
} Tzd#!Lvm:,  
~-"CU:$o  
private static class MaxHeap{ h;=~%2Y  
r^k+D<k[7  
void init(int[] data){ =Jp:dM*  
this.queue=new int[data.length+1]; O%t? -h  
for(int i=0;i queue[++size]=data; = MByD&o`  
fixUp(size); 5;`Ot2  
} kEh9J>|M  
} {-)^?Zb @  
Csyh 'v  
private int size=0; 6;E3|st1X  
,Uh^e]pC  
private int[] queue; |=5zI6pT  
"8Dm7)nB  
public int get() { lz^Vi!|p  
return queue[1]; uh\G6s!4/  
} _DR@P(0>_  
^"Bhp:o2  
public void remove() { BOpZ8p'eH1  
SortUtil.swap(queue,1,size--); :ok.[q  
fixDown(1); Y`g O:d8  
} Q8m~L1//S  
file://fixdown % jDH{xSMb  
private void fixDown(int k) { >{AE@@PB^  
int j; c@A.jc  
while ((j = k << 1) <= size) { hy/ g*>  
if (j < size %26amp;%26amp; queue[j] j++; 6+=_p$crMx  
if (queue[k]>queue[j]) file://不用交换 !\b-Ot(  
break; j32*9  
SortUtil.swap(queue,j,k); taDe^Ist j  
k = j; kB+$Kt<]L  
} :@(1~Hm  
} CUDA<Fm  
private void fixUp(int k) { q:_:E*o  
while (k > 1) { e;v7!X  
int j = k >> 1; dPO"8HQ  
if (queue[j]>queue[k]) CLND[gc  
break; 0}GO$%l  
SortUtil.swap(queue,j,k); 7<LuL  
k = j; E2|M#Y  
} Av.`'.b  
} 1PVZGZxAgv  
pZ Uy (  
} ts=D  
} :?*n:g5  
} DXJw)%G w  
X$<pt,}%  
SortUtil: U_jW5mgsG  
Mn5(Kw?o2J  
package org.rut.util.algorithm; yR5XcPoKI  
} ew{WD  
import org.rut.util.algorithm.support.BubbleSort; \HxF?i "   
import org.rut.util.algorithm.support.HeapSort; RZEq@q  
import org.rut.util.algorithm.support.ImprovedMergeSort; zMepF]V  
import org.rut.util.algorithm.support.ImprovedQuickSort; N75U.;U0  
import org.rut.util.algorithm.support.InsertSort; <j,I@%  
import org.rut.util.algorithm.support.MergeSort; ?121 as}z  
import org.rut.util.algorithm.support.QuickSort; '7' 73  
import org.rut.util.algorithm.support.SelectionSort; <Z[Z&^  
import org.rut.util.algorithm.support.ShellSort; SN|!FW.*:  
C;ab-gh  
/** YdV.+v(30  
* @author treeroot JQLQS  
* @since 2006-2-2 P|1  D6  
* @version 1.0 RrLj5Jq  
*/ _9-;35D_  
public class SortUtil { _W@sFv%sj  
public final static int INSERT = 1; xTk6q*NvT^  
public final static int BUBBLE = 2; [#wt3<d`)  
public final static int SELECTION = 3; 3N]ushMO  
public final static int SHELL = 4; b+Sj\3fX  
public final static int QUICK = 5; ql%K+4@  
public final static int IMPROVED_QUICK = 6; i=5!taxu}E  
public final static int MERGE = 7; eG+$~\%Fub  
public final static int IMPROVED_MERGE = 8; O-0 5.  
public final static int HEAP = 9; 'RwfW|~6  
Qraq{'3  
public static void sort(int[] data) { yl*%P3m|  
sort(data, IMPROVED_QUICK); ;=2JbA+"G  
} zM8 jjB  
private static String[] name={ k %{q q v  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 37n2#E  
}; .WeSU0XG  
Q@p' nE,  
private static Sort[] impl=new Sort[]{ pv4#`.m  
new InsertSort(), BZOl&G(  
new BubbleSort(), dJzaP  
new SelectionSort(), E*R-Dno_F  
new ShellSort(), /0`Eux\  
new QuickSort(), t<+>E_Xw  
new ImprovedQuickSort(), Z$i?p;HnW  
new MergeSort(), n=f?Q=h\3  
new ImprovedMergeSort(), "4KyJ;RA*  
new HeapSort() |0^IX   
}; V6>{k_0{V  
`?^<r%*F.  
public static String toString(int algorithm){ zgS)j9q}  
return name[algorithm-1]; ys)  
} X'.l h#&  
?&6|imPE  
public static void sort(int[] data, int algorithm) { 3f>9tUWhTy  
impl[algorithm-1].sort(data); 8bw, dBN  
} zn'Mi:O'p  
c.Izm+9k  
public static interface Sort { {OQ)Np!  
public void sort(int[] data); uR=*q a  
} N f?\O@  
2/ )~$0  
public static void swap(int[] data, int i, int j) { {y|.y~vW  
int temp = data; f% 8n?f3;u  
data = data[j]; Dd OK&  
data[j] = temp; J;V#a=I  
} 3Zz_wr6  
} sw$JY}Q8x  
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