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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。 NjyIwo0  
插入排序: a~TZ9yg+HL  
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package org.rut.util.algorithm.support; |dzF>8< )  
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import org.rut.util.algorithm.SortUtil; "8 mulE,  
/** QYb?;Z  
* @author treeroot Bj[/ tQ  
* @since 2006-2-2 6(^9D_"@  
* @version 1.0 <vuX " 8  
*/ Cb-E<W&2D  
public class InsertSort implements SortUtil.Sort{ Z69 IHA[  
{EN@,3bA  
/* (non-Javadoc) Y-{BY5E.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3 pH` ]m2  
*/ Y--8v#t  
public void sort(int[] data) { !QspmCo+  
int temp; GLF"`M/g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .4(f0RG  
} jP'b! 4  
} o+Z9h1z%,  
} 5z>\'a1U  
D.!7jA#  
} ]*U')  
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冒泡排序: 3:#rFb  
"-:\-sMt{  
package org.rut.util.algorithm.support; _If?&KJ r  
`{_PSzM  
import org.rut.util.algorithm.SortUtil; fMaNv6(  
h'KtG<+  
/** tY=TY{RY  
* @author treeroot Zw{tuO7}K  
* @since 2006-2-2 ~]M"  
* @version 1.0 y*(j{0yd  
*/ )c !S@Hs  
public class BubbleSort implements SortUtil.Sort{ D|:sSld @  
J@iN':l-  
/* (non-Javadoc) 4] 1a^@?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AMz=HN  
*/ 2&URIQg*J  
public void sort(int[] data) { w\*/(E<:  
int temp; N2e<Y_T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ D0i30p`  
if(data[j] SortUtil.swap(data,j,j-1); &N0|tn  
} o hlVc%a  
} V}-o): dI|  
} ZRfa!9vl  
} q04Dj-2<  
!g"9P7p  
} e`F|sz]k"H  
5zOSb$;  
选择排序: jF9CTL<  
p04+"  
package org.rut.util.algorithm.support; "cM5=;  
^mQfXfuL  
import org.rut.util.algorithm.SortUtil; y@_?3m7B=  
~#\#!H7  
/** F JhVbAMd  
* @author treeroot !*6z=:J  
* @since 2006-2-2 4&fnu/,Z  
* @version 1.0 Al}PJz\  
*/ O]eJQ4XN<  
public class SelectionSort implements SortUtil.Sort { e~?]F 0/  
J7o?h9  
/* Xs@ ^D,  
* (non-Javadoc) 5V!XD9P'  
* 12dW:#[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |"v{RC0  
*/ S '+"+%^tj  
public void sort(int[] data) { HC,@tfS  
int temp; [bJnl>A  
for (int i = 0; i < data.length; i++) { b%j:-^0V  
int lowIndex = i; BwD1}1jp  
for (int j = data.length - 1; j > i; j--) { ^/vWK\-  
if (data[j] < data[lowIndex]) { sb.SpF>   
lowIndex = j; |>GIPfVT  
} H%aLkV!J  
} ;(6lN<i U  
SortUtil.swap(data,i,lowIndex); |3ETF|)?  
} $t'I*k^N  
} |Eu~= J7@  
[zEP|  
} . *xq =  
ped Yf{T  
Shell排序: HYmXPpse  
hATy 3*4  
package org.rut.util.algorithm.support; ZNeqsN{  
\;gt&*$-  
import org.rut.util.algorithm.SortUtil; [S+-ovl  
C/ VYu-p%  
/** *?Ef}:]  
* @author treeroot NI:N W-!  
* @since 2006-2-2 ^I?y\:.  
* @version 1.0 REBDr;tv  
*/ rF3]AW(  
public class ShellSort implements SortUtil.Sort{ g>P9hIl  
{`CWzk?  
/* (non-Javadoc)  o f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DNBpIC5&6  
*/ BK SK@OV  
public void sort(int[] data) { w8I&:"^7<  
for(int i=data.length/2;i>2;i/=2){ |9Ks13?Ck  
for(int j=0;j insertSort(data,j,i); dvF48,kr  
} B?Sfcq-  
} Hd`p_?3]  
insertSort(data,0,1); -GVG1#5  
} uA`PZ|  
;XQ lj?:  
/** BM~niW;k  
* @param data =c^=Yvc7U  
* @param j dU3 >h[q  
* @param i E?U]w0g  
*/ u(WQWsN  
private void insertSort(int[] data, int start, int inc) { 5?0gC&WfN  
int temp; aZGDtzNG5h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,GP4I3D  
} 1?#9K j{ql  
} -8 =u{n  
} y@\Q@ 9  
$: m87cR~  
} &})d%*n  
U*"cf>dB(  
快速排序: i/~QJ1C  
fYM6wYJ  
package org.rut.util.algorithm.support; 1y-lZ}s_  
CVG>[~}(9'  
import org.rut.util.algorithm.SortUtil; f<altz_\q  
rtmt 3  
/** ^|i\d \  
* @author treeroot 0W%}z}/ N  
* @since 2006-2-2 "`*a)'.'^c  
* @version 1.0 Rue|<d1  
*/ ^WW|AS  
public class QuickSort implements SortUtil.Sort{ q}v04Yy,o  
)-:eQ{st`  
/* (non-Javadoc) ]N <]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %g@3S!lK  
*/ b_gN?F7_  
public void sort(int[] data) { uPC qO+f  
quickSort(data,0,data.length-1); R:BBNzY}f  
} tDHHQ  
private void quickSort(int[] data,int i,int j){ 39aCwhh7v  
int pivotIndex=(i+j)/2; C2=iZ`Z>T  
file://swap rspoSPnY1  
SortUtil.swap(data,pivotIndex,j); 3kqV_Pjg  
xZ=FH>Y6'  
int k=partition(data,i-1,j,data[j]); 8w8I:*  
SortUtil.swap(data,k,j); Fxth> O`$  
if((k-i)>1) quickSort(data,i,k-1); j[J@tM#  
if((j-k)>1) quickSort(data,k+1,j); ]{2{:`s  
Q] yT  
} C6V&R1"s  
/** 0"qim0%|DF  
* @param data /\a]S:V-j  
* @param i )cqDvH  
* @param j 2]aZe4H.  
* @return x+y!P  
*/ j YIV^o 0  
private int partition(int[] data, int l, int r,int pivot) { }8F$& AFt  
do{ "i{_<;p O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x1V2|~;p|  
SortUtil.swap(data,l,r); !Xx<~l IC  
} hp]ng!I{\u  
while(l SortUtil.swap(data,l,r); +fP/|A8P  
return l; 'W?v.W &  
} JQ/t, v$G  
[[0bhmG)  
} Q^MXiE O+  
"^ 6lvZP(  
改进后的快速排序: *iRm`)zC(  
j #I:6yA3  
package org.rut.util.algorithm.support; <A -(&+  
;?L!1wklA  
import org.rut.util.algorithm.SortUtil; M o"JV  
$]H=  
/** hLytKPgt  
* @author treeroot :ONuWNY N  
* @since 2006-2-2 lO2T/1iMTW  
* @version 1.0 [71#@^ye  
*/ ]oas  
public class ImprovedQuickSort implements SortUtil.Sort { h-b5   
h/ X5w4  
private static int MAX_STACK_SIZE=4096; )}Rfa}MD  
private static int THRESHOLD=10; yXTK(<'  
/* (non-Javadoc) MB8SB   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # NN"(I  
*/ G V:$;  
public void sort(int[] data) { EAD0<I<>  
int[] stack=new int[MAX_STACK_SIZE]; u3*NO )O  
$vTAF-~Ql  
int top=-1; $\,BpZ }3  
int pivot; W`Q$t56  
int pivotIndex,l,r; b$goF }b'g  
};"+ O  
stack[++top]=0; 'Uko^R)(  
stack[++top]=data.length-1; zD)IU_GWa  
2B9 i R  
while(top>0){ ovDJ{3L6O  
int j=stack[top--]; t8DL9RW'  
int i=stack[top--]; 2 ]V>J  
LmXF`Y$  
pivotIndex=(i+j)/2; xMNNXPz(  
pivot=data[pivotIndex]; vcw>v={x  
+dCDM1{_a  
SortUtil.swap(data,pivotIndex,j); xBL$]>  
b'7z DZI]  
file://partition 8Q^6ibE  
l=i-1; *,W!FxJ  
r=j; c/<Sa|'  
do{ ]{,Gf2v;;d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g= FDm*  
SortUtil.swap(data,l,r); 5?5- ;H  
} wc7mJxJxA  
while(l SortUtil.swap(data,l,r); . 0 s[{x  
SortUtil.swap(data,l,j); b46[fa   
hgweNRTh!  
if((l-i)>THRESHOLD){ W,HH *!  
stack[++top]=i; \K?(  
stack[++top]=l-1; c Pq Dsl3  
} X-)RU?  
if((j-l)>THRESHOLD){ fO^e+M z  
stack[++top]=l+1; cBLR#Yu;O5  
stack[++top]=j; AXl!cgi  
} j{{~ZM  
t['k%c  
} ^)f{q)to  
file://new InsertSort().sort(data); ;-KA UgL2  
insertSort(data); >d8x<|D  
} b^[W_y  
/** *L%6qxl`V  
* @param data M5GY>3P$c  
*/ f0 uUbJ5  
private void insertSort(int[] data) { eVw\v#gd  
int temp; [j)\v^m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .M9d*qp`S  
} }+9 1s'/c  
} >=-GD2WK  
} h4CTTe)  
=tr1*s{  
} bQ-Gp;]  
E`Jp(gK9F  
归并排序: &W=V%t>Z  
<w0NPrS]  
package org.rut.util.algorithm.support; -{X<*P4p  
ixIV=#  
import org.rut.util.algorithm.SortUtil; 0jxO |N2)  
lx\qp`w  
/** 0U82f1ei  
* @author treeroot :+~KPn>w5  
* @since 2006-2-2 _PXG AS  
* @version 1.0 tcBC!_vF  
*/ xS6(K  
public class MergeSort implements SortUtil.Sort{ =?/N5O(  
l GdM80f  
/* (non-Javadoc) ]2Sfkl0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Guk.,}9  
*/ Qq#Ff\|4u(  
public void sort(int[] data) { J\het 2?\  
int[] temp=new int[data.length]; L([E98fo  
mergeSort(data,temp,0,data.length-1); 9z5\*b s  
} v5(q) h  
J=I:T2bV&s  
private void mergeSort(int[] data,int[] temp,int l,int r){ qqnclqkw&  
int mid=(l+r)/2; hi!L\yi  
if(l==r) return ; Y,k(#=wg  
mergeSort(data,temp,l,mid); -Y*VgoK%  
mergeSort(data,temp,mid+1,r); u~s Sk  
for(int i=l;i<=r;i++){ iO!27y  
temp=data; tIq>Oojdx  
} *)limqe3"$  
int i1=l; ?h/xAl  
int i2=mid+1; e8$l0gzaD  
for(int cur=l;cur<=r;cur++){ drW~)6Lr@  
if(i1==mid+1) ePf+[pV3  
data[cur]=temp[i2++]; Dc08D4   
else if(i2>r) (+|X<Bl:`  
data[cur]=temp[i1++]; LmP qLH'(Q  
else if(temp[i1] data[cur]=temp[i1++]; q5Fs)B  
else YiD-F7hf.*  
data[cur]=temp[i2++]; ]JOephX2R  
} k*5'L<&  
} 24#bMt#^  
!Citzor  
} Ls&+XlrX8  
JkZ50L  
改进后的归并排序: 25UYOK}!  
_eGT2,D5r  
package org.rut.util.algorithm.support; R)ERx z#  
w{pUUo:<  
import org.rut.util.algorithm.SortUtil; <lUOJV{&\  
_ `H.h6h  
/** K&*iw`  
* @author treeroot <"W?<VjO  
* @since 2006-2-2 [+;qWfs B  
* @version 1.0 {@?G 9UypA  
*/ Ck: 9gn  
public class ImprovedMergeSort implements SortUtil.Sort { Rj^7#,993  
t)` p@]j  
private static final int THRESHOLD = 10; m9Ax\lf  
OFA{ KZga  
/*  3P1&;  
* (non-Javadoc) ~ |6dH  
* :M06 ;:e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (ab{F5  
*/ r#A_RZ2~@  
public void sort(int[] data) { 2K;#Evn'j  
int[] temp=new int[data.length]; 7c-Gm R2  
mergeSort(data,temp,0,data.length-1); iZaeoy  
} "NDxgJ%J35  
rz6uDJ"  
private void mergeSort(int[] data, int[] temp, int l, int r) { :p' VbQZ{  
int i, j, k; qz9tr  
int mid = (l + r) / 2; ~3gru>qI&  
if (l == r) Y$g}XN*)E  
return; `-_N@E1'>  
if ((mid - l) >= THRESHOLD) s2FngAM;f  
mergeSort(data, temp, l, mid); 98fu>>*G{  
else l[ne/O JJ  
insertSort(data, l, mid - l + 1); Ir5WN_EaS  
if ((r - mid) > THRESHOLD) %JtbRs(~q  
mergeSort(data, temp, mid + 1, r); hrbo:8SL  
else Ow3P-UzU3  
insertSort(data, mid + 1, r - mid); p,F^0OU2}:  
9IA$z\<<w  
for (i = l; i <= mid; i++) { K%MW6y  
temp = data; cq*=|m0}Z  
} nU(DYHc+l  
for (j = 1; j <= r - mid; j++) { I^D0<lHl~  
temp[r - j + 1] = data[j + mid]; h>alGLN>  
} 1G;8MPU  
int a = temp[l]; JWROYED  
int b = temp[r]; XF|WCZUnY%  
for (i = l, j = r, k = l; k <= r; k++) { Q.+|xwz  
if (a < b) { l?/Y  
data[k] = temp[i++]; !Vheq3"q/  
a = temp; RW_q~bA9  
} else { 1S0pd-i  
data[k] = temp[j--]; 4,G w#@  
b = temp[j]; |ETiLR=&  
} n-o3  
} DdSSd@,x*  
} |9Yi7.  
`Gd$:qV  
/** !g>.i`  
* @param data ]u#JuX  
* @param l &.Q8Mi aT  
* @param i ymWgf 6r<  
*/ ;;Ds  
private void insertSort(int[] data, int start, int len) { &3Z?UhH  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <*|?x86~  
} #`;/KNp 9  
} WZZ4]cC  
} 1zftrX~v!X  
} ~9=aT1S|  
w8iR|TV  
堆排序: @*MC/fe  
|>2FRPK  
package org.rut.util.algorithm.support; %+-C3\'  
{f/]5x(_  
import org.rut.util.algorithm.SortUtil; w~Ff%p@9  
5Y\!pf7SQ|  
/** f[sF:f(zI  
* @author treeroot DNkWOY#{  
* @since 2006-2-2 eKN$jlg  
* @version 1.0 >u0w.3r#  
*/ 4v'A\~ZU  
public class HeapSort implements SortUtil.Sort{ ^V3v{>D>  
pFsc}R/0/8  
/* (non-Javadoc) ir16   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }LP!)|E  
*/ zf[`~g  
public void sort(int[] data) { 8FkFM^\1L  
MaxHeap h=new MaxHeap(); a%BeqSZh  
h.init(data); -n5 B)uw=  
for(int i=0;i h.remove(); }-@4vl x$  
System.arraycopy(h.queue,1,data,0,data.length); ' GG=Ebt  
} G{9X)|d  
l4y{m#/  
private static class MaxHeap{ !@A#=(4R4  
fP HLXg5s  
void init(int[] data){ %ZP+zh n}  
this.queue=new int[data.length+1]; QHt4",Ij  
for(int i=0;i queue[++size]=data; `^9(Ot $  
fixUp(size); _qXa=|}V.  
} xJs;v  
} 3WY$WRv  
2F`cv1M  
private int size=0; FG@ -bV  
!xIm2+:(  
private int[] queue; ;8{cA_&  
]i*](UQ  
public int get() { ,`A?!.K$  
return queue[1]; " =] -%B  
} QK`i%TXJ  
sJ z@7.  
public void remove() { wJ<Oo@snm  
SortUtil.swap(queue,1,size--); h*B|fy4K9U  
fixDown(1); !ZRs;UZ>o  
} o>/O++7Ra  
file://fixdown c`*TPqw(B[  
private void fixDown(int k) { ,m=4@ofX  
int j; -fI@])$9J  
while ((j = k << 1) <= size) {  j2l55@  
if (j < size %26amp;%26amp; queue[j] j++; <M]h{BS=  
if (queue[k]>queue[j]) file://不用交换 ra N)8w}-  
break; qmy%J  
SortUtil.swap(queue,j,k); 1xE]6he4{T  
k = j; Mg,:UC:  
} +;}#B~:  
} L I>(RMv  
private void fixUp(int k) { %ir:AS k  
while (k > 1) { Va VN  
int j = k >> 1; in`aGFQO  
if (queue[j]>queue[k]) &sXRN &Fp  
break; <#GB[kQa  
SortUtil.swap(queue,j,k); gb=/#G0R  
k = j; 6 15s5ZA  
} ] b9-k  
} -u!FOD/  
`1OgYs  
} 2lKV#9"  
?E%ELs_Dl  
} R"MRnr_4K  
iJ' xh n  
SortUtil: "1`Oh<={b  
ph>7?3;t  
package org.rut.util.algorithm; .`<@m]m-  
SUKxkc(  
import org.rut.util.algorithm.support.BubbleSort; qn1255fB  
import org.rut.util.algorithm.support.HeapSort; 73#x|lY  
import org.rut.util.algorithm.support.ImprovedMergeSort; [YrHA~=U  
import org.rut.util.algorithm.support.ImprovedQuickSort; %1 vsN-O}8  
import org.rut.util.algorithm.support.InsertSort; C;QAT  
import org.rut.util.algorithm.support.MergeSort; [%Bf< J<  
import org.rut.util.algorithm.support.QuickSort; bwM@/g%DL  
import org.rut.util.algorithm.support.SelectionSort; !o=U19)  
import org.rut.util.algorithm.support.ShellSort; <s5qy-  
5]I|DHmu  
/** zk*c)s  
* @author treeroot ##Q/I|  
* @since 2006-2-2 [.hyZ}B  
* @version 1.0 h_1T,f (  
*/  c gzwx  
public class SortUtil { G0u LmW70  
public final static int INSERT = 1; hQ6a~?f  
public final static int BUBBLE = 2; .h&k jD  
public final static int SELECTION = 3; ;$Y4xM`=m  
public final static int SHELL = 4; ")O`mXg-  
public final static int QUICK = 5; VhjM>(  
public final static int IMPROVED_QUICK = 6; joKIrS0y  
public final static int MERGE = 7; Uw,2}yR  
public final static int IMPROVED_MERGE = 8; a22Mufl  
public final static int HEAP = 9; r78TE@d  
P0H6 mn*  
public static void sort(int[] data) { wn_b[tdxq  
sort(data, IMPROVED_QUICK); x8\A<(G_M=  
} PHA-9\jC{  
private static String[] name={ oI)GKA_Ng7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?Kvl!F!`  
}; ae:zWk'!  
}ENR{vz$A  
private static Sort[] impl=new Sort[]{ Q#h 9n]5  
new InsertSort(), &B! o,qp  
new BubbleSort(), +w@M~?>  
new SelectionSort(), 2C{H$ A,pW  
new ShellSort(), U9D!GKVp  
new QuickSort(), ? (*t@ {k  
new ImprovedQuickSort(), E*L iM5+I  
new MergeSort(), "&+"@ <  
new ImprovedMergeSort(), R4ht6Vm3g)  
new HeapSort() n,$IfC"  
}; [=B$5%A  
V $z} K  
public static String toString(int algorithm){ =@k%&* Y?  
return name[algorithm-1]; 3^s/bm$g  
} Bs?7:kN(  
1]orUF&_  
public static void sort(int[] data, int algorithm) { 54 >-  
impl[algorithm-1].sort(data); 7j nIv];i  
} %dQxJMwj  
L?5Ck<!xG  
public static interface Sort { hx/N1 x  
public void sort(int[] data); >pU:Gr  
} s w39\urf  
>``MR%E:<  
public static void swap(int[] data, int i, int j) { ~QvqG{bFB  
int temp = data; "\0v,!@  
data = data[j]; 6#IU*  
data[j] = temp; /axIIfx-  
} ui(^k $  
} 0b4R  
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