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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。 }\8-&VoY#X  
插入排序: [olSgq!3  
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package org.rut.util.algorithm.support; ojBdUG\  
~x'8T!M{  
import org.rut.util.algorithm.SortUtil; C,> n  
/** lW#2ox  
* @author treeroot X!z-J>  
* @since 2006-2-2 `g1?Q4h  
* @version 1.0 |-/@3gPO  
*/ 58#nYt  
public class InsertSort implements SortUtil.Sort{ H*<E5^#dw  
Y+23 jlgb  
/* (non-Javadoc) ;5\'PrE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AG vhSd7  
*/ C "@>NC_  
public void sort(int[] data) { PuZzl%i P3  
int temp; &${| o@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T^7}Qs9  
} .c<U5/  
} FPK=Tr:b  
} Q-R?y+| x  
5W fZd  
} tuwlsBV  
v4rO 0y=C  
冒泡排序: E3S0u7 Es  
7vPG b:y  
package org.rut.util.algorithm.support;  1 <T|  
yCkc3s|DA;  
import org.rut.util.algorithm.SortUtil; :f7!?^;y>  
XHgW9;M!  
/** =$#5Ge]b  
* @author treeroot @zw&-b:qI  
* @since 2006-2-2 ea$. +  
* @version 1.0 ,s}&|+ '"  
*/ o%lxEd r  
public class BubbleSort implements SortUtil.Sort{ DU*qhW`X  
.@;5"  
/* (non-Javadoc) Bo ywgL|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e9:pS WA-n  
*/ >^#Liwm  
public void sort(int[] data) { Kt]vTn7!9  
int temp; G;/> N'#  
for(int i=0;i for(int j=data.length-1;j>i;j--){ [Ax :gj  
if(data[j] SortUtil.swap(data,j,j-1); +B+cN[d  
} *&_A4)  
} s` , g4ce`  
} W95q1f# 7  
} !]mo.zDSW5  
FoYs<aER  
} 0?I  
(<OmYnm  
选择排序: SZtSUt(ss  
!](Mt?e  
package org.rut.util.algorithm.support; =:R${F  
K!>3`[:I"  
import org.rut.util.algorithm.SortUtil; eo!+UFZbY  
1UrkDz?X  
/** BjjuZN&  
* @author treeroot oz3!%'  
* @since 2006-2-2 kwS[,Qy\  
* @version 1.0 XWz~*@ci  
*/ 7n;a_Z0s$  
public class SelectionSort implements SortUtil.Sort { 0f+]I=1\  
,gkWksl9  
/* 3_eg'EP.E  
* (non-Javadoc) 5(Q-||J  
* RdpOj >fT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C<^S$  
*/ j6 _w2  
public void sort(int[] data) { OWYY2&.h  
int temp; yM-%x1r ~  
for (int i = 0; i < data.length; i++) { 'P&r^V\~(/  
int lowIndex = i; vL"n oLs  
for (int j = data.length - 1; j > i; j--) { 3] U/^f3  
if (data[j] < data[lowIndex]) { $K|2k7  
lowIndex = j; [R~@#I P!  
} 2|M,#2E-  
} '@QK<!%,  
SortUtil.swap(data,i,lowIndex); HE2t0sAYX  
} 8h|~>v  
} !E *IktAI  
~~ty9;KYL  
} %+ MYg^  
; Oz p  
Shell排序: L{c\7  
K<u~[^R  
package org.rut.util.algorithm.support; yN}<l%  
2+LvlS)C  
import org.rut.util.algorithm.SortUtil; iW? NxP  
kf)s3I/`(  
/** *b1NVN$  
* @author treeroot fvDcE]_%H  
* @since 2006-2-2 }-WuHh#  
* @version 1.0 _x7>d:C  
*/ [rhK2fr:i  
public class ShellSort implements SortUtil.Sort{ UWBR5  
M""X_~&I"  
/* (non-Javadoc) )|S!k\^A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !z?:Y#P3  
*/ {Hxziyv~Y(  
public void sort(int[] data) { ,<CzS,(  
for(int i=data.length/2;i>2;i/=2){ ;cWFh4_  
for(int j=0;j insertSort(data,j,i); r P&.`m88n  
} *wz62p  
} Z9PG7h  
insertSort(data,0,1); _d3/="=  
} T(eNK c2  
> bSQ}kXe  
/** [UaM}-eR  
* @param data |Iq\ZX%q  
* @param j cz*Z/5XH  
* @param i [ Q20c<,  
*/ ("@ih]zYf  
private void insertSort(int[] data, int start, int inc) { N6S}u@{J~N  
int temp; J.npv1F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]4oF!S%F  
} 3sBu`R*hk  
} v!?>90a  
} p< jM%fbZk  
}o#6g|"\sY  
} ucC'SS  
^<'=]?xr  
快速排序: '${xZrzmt  
Yf,U2A\  
package org.rut.util.algorithm.support; :+\B|*T2.L  
,Tc598D  
import org.rut.util.algorithm.SortUtil; c4n]#((%a  
veh?oJi@  
/** 2q.J1:lW  
* @author treeroot 8;]U:tv  
* @since 2006-2-2 IHtNaN )  
* @version 1.0 ,XNz.+Ov  
*/ 'uw=)8t7  
public class QuickSort implements SortUtil.Sort{ Kr|9??`0E  
MHkTN  
/* (non-Javadoc) .#y.:Pb|e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W-+~r  
*/ Qyoly"b@  
public void sort(int[] data) { n$}Cj}eju  
quickSort(data,0,data.length-1); zQQ=8#]  
} U(cV#@Y  
private void quickSort(int[] data,int i,int j){ H"A|Z6y$^  
int pivotIndex=(i+j)/2; 4r'f/s8"#  
file://swap UFy"hJchO  
SortUtil.swap(data,pivotIndex,j); {  'Db  
2-*zevPiG=  
int k=partition(data,i-1,j,data[j]); TS{ycGY  
SortUtil.swap(data,k,j); (\<#fkeH  
if((k-i)>1) quickSort(data,i,k-1); O_jf)N\pi  
if((j-k)>1) quickSort(data,k+1,j); h}o7/p  
{m/h3hjFa  
} fQ[ GN}k  
/** 'X$2gD3c9  
* @param data P~y%  
* @param i Z;bg;@r|  
* @param j +84JvOkWi  
* @return pO.+hy  
*/ IP E2t  
private int partition(int[] data, int l, int r,int pivot) { rmOcA  
do{ |lOH PA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); kF lq@['U  
SortUtil.swap(data,l,r); xM3T7PV9  
} 1 \_S1ZS  
while(l SortUtil.swap(data,l,r); QVVR_1Q  
return l; 9fyJw1  
} 7LM?<lp]  
6ZCSCBW  
} ySLa4DQf  
rG _T!']~  
改进后的快速排序: !z7j.u`Y  
b3z {FP  
package org.rut.util.algorithm.support; $-zt,iRyV  
G:HPd.ay  
import org.rut.util.algorithm.SortUtil; 4]F:QS% x  
Vnu*+  
/** [nO\Q3c|@$  
* @author treeroot 8%qHy1  
* @since 2006-2-2 ]\y:AkxhJ  
* @version 1.0 2`XG"[@  
*/ f,ajo   
public class ImprovedQuickSort implements SortUtil.Sort { bF5mCR:  
|]tIE{d  
private static int MAX_STACK_SIZE=4096; SL9]$MmJn  
private static int THRESHOLD=10; =}6yMR!4R<  
/* (non-Javadoc) %z}{jqD&:X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D\}A{I92F4  
*/ 0:Ow$  
public void sort(int[] data) { a9hK8e  
int[] stack=new int[MAX_STACK_SIZE]; LZirw'  
:`~;~gW<  
int top=-1; Sz.sX w;  
int pivot; Fc{X$hh<  
int pivotIndex,l,r; i$GL]0  
3dlL?+Y#  
stack[++top]=0; 8CR b6  
stack[++top]=data.length-1; ]m _<lRye  
sYQ=nL  
while(top>0){ r &<sSE;5  
int j=stack[top--]; 5C}1iZEJ  
int i=stack[top--]; noali96J  
+j*hbG=  
pivotIndex=(i+j)/2; llbf(!  
pivot=data[pivotIndex]; 2$)xpET  
^EK]z8;|  
SortUtil.swap(data,pivotIndex,j); {$,t^hd  
;}iV`)S  
file://partition 8|5ttdZ  
l=i-1; Y8 c#"vm(  
r=j; zGDLF`  
do{ Y[=X b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >l<`)4*H  
SortUtil.swap(data,l,r); R^DZ@[\iV  
} ID/=YG@  
while(l SortUtil.swap(data,l,r); fC$Rz#5?  
SortUtil.swap(data,l,j); 6:Fb>|]*PY  
I?2S{]!?  
if((l-i)>THRESHOLD){ 7Nu.2qE  
stack[++top]=i; 4f)B@A-  
stack[++top]=l-1; }@Ap_xW  
} wZ&l6J4L  
if((j-l)>THRESHOLD){ %\i OX|F_  
stack[++top]=l+1; >S<`ri'5_  
stack[++top]=j; .uo9VL<  
} 6ol*$Q"z  
Ol%KXq[  
} RM\A$.5  
file://new InsertSort().sort(data); %T~3xQ  
insertSort(data); b3'U }0Ug  
} sbeS9vE  
/** F(!9;O5J]  
* @param data %QYH]DR  
*/ $,@PY5r  
private void insertSort(int[] data) { })?t:zX#*  
int temp; F'~\!dNL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y.iA]Ikz  
} U*p;N,SjQ  
} Gr),o6}p  
} e-Pn,j  
E.V lz^B  
} kYW>o}J|  
-z s5WaJn/  
归并排序: W@b Z~Q9  
] I&l0Fx  
package org.rut.util.algorithm.support; 3xhGmD\SKO  
qKSS 2f $  
import org.rut.util.algorithm.SortUtil; JZ l"k  
#YiphR&  
/** X[e:fW[e)  
* @author treeroot k1.h|&JJN  
* @since 2006-2-2 (C3:_cM5  
* @version 1.0 yhuzjn  
*/ DN$[rCi7  
public class MergeSort implements SortUtil.Sort{ 3J3Yt`  
`X8wnD  
/* (non-Javadoc) (XU( e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rk E;OU  
*/ 99KW("C1F  
public void sort(int[] data) { D\4pLm"!v  
int[] temp=new int[data.length]; Os rHA  
mergeSort(data,temp,0,data.length-1); x\i+MVR-  
} |7$Q'3V  
(zmL MG(R  
private void mergeSort(int[] data,int[] temp,int l,int r){ P9W!xvV`w  
int mid=(l+r)/2; Q?g#?z&Pu\  
if(l==r) return ; "Dt: 8Nf^  
mergeSort(data,temp,l,mid); pXhN?joe  
mergeSort(data,temp,mid+1,r); A!:R1tTR;S  
for(int i=l;i<=r;i++){ |uIgZ|7[  
temp=data; o..iT:f;n  
} -U BH,U  
int i1=l; :'$V7LZ5  
int i2=mid+1; 8 U<$u,WS  
for(int cur=l;cur<=r;cur++){ GzN /0:b  
if(i1==mid+1) <1pRAN0  
data[cur]=temp[i2++]; SR$?pJh D%  
else if(i2>r) cHAq[Ebp2!  
data[cur]=temp[i1++]; o'KBe%@/  
else if(temp[i1] data[cur]=temp[i1++]; W}iDT?Qi  
else z=j,-d%9  
data[cur]=temp[i2++]; tJa*(%Z?f  
} d1>L&3HKx  
} ?X'l&k>  
r}4   
} ,{jF)NQaP  
+UX~TT:  
改进后的归并排序: PN"=P2e/ 6  
T!2gOe  
package org.rut.util.algorithm.support; ($X2SIZh  
nkO4~p  
import org.rut.util.algorithm.SortUtil; = tY%k!R  
l|S_10x5  
/** %%{f-\-7Ig  
* @author treeroot ,R7RXpP7t  
* @since 2006-2-2 y;VmA#k`  
* @version 1.0 ] A,Og_g  
*/ 8=,?B h".  
public class ImprovedMergeSort implements SortUtil.Sort { x4CSUcKb  
HXP/2&|JY  
private static final int THRESHOLD = 10; iTVepYv4m  
c9ea%7o{0a  
/* rebWXz7  
* (non-Javadoc)  q!as~{!  
* M=sGPPj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^5Ob(FvU  
*/ We@wN:  
public void sort(int[] data) { `OHdo$Y9  
int[] temp=new int[data.length]; =kBWY9 :$,  
mergeSort(data,temp,0,data.length-1); tKCX0UZ'  
} *@fVogr^  
X8 A$&  
private void mergeSort(int[] data, int[] temp, int l, int r) { {S"!c.  
int i, j, k; suFO~/lRno  
int mid = (l + r) / 2; .GiQC {@9w  
if (l == r) $p\0/  
return; la_FZ  
if ((mid - l) >= THRESHOLD) T5+ (Fz  
mergeSort(data, temp, l, mid); K}!YXy h  
else ^o[(F<q  
insertSort(data, l, mid - l + 1); D%h_V>#z  
if ((r - mid) > THRESHOLD) '&F Pk T:5  
mergeSort(data, temp, mid + 1, r); >_u5"&q  
else nq*D91Q  
insertSort(data, mid + 1, r - mid); B18?)LA  
im@c||  
for (i = l; i <= mid; i++) { s>a(#6Q  
temp = data; hEfFMi=a`  
} wmaj[e,h  
for (j = 1; j <= r - mid; j++) { :pGgxO%q  
temp[r - j + 1] = data[j + mid]; wQrD(Dv(yA  
} */ok]kX'  
int a = temp[l]; mO @Sl(9  
int b = temp[r]; ;s w3MRJ  
for (i = l, j = r, k = l; k <= r; k++) { 4@"n7/<  
if (a < b) { }EJ't io]  
data[k] = temp[i++]; f4+}k GJN  
a = temp; d^G5Pq  
} else {  r95$( N  
data[k] = temp[j--]; K~jN"ev  
b = temp[j]; H  2UR  
} Wf9K+my  
} b)+;@wa~  
} xi!R[xr1  
H >1mi_1  
/** 8@BN6  
* @param data z1~FE  
* @param l Kv#TJn  
* @param i #brV{dHV,  
*/ ]tO9<  
private void insertSort(int[] data, int start, int len) { U66zm9 3&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); FW!1 0K?  
} =f-.aq(G/  
} o3xfif  
} 5wGc"JHm  
} = ms o1  
D3kx&AR  
堆排序: ${w\^6&  
l@nG?l #  
package org.rut.util.algorithm.support; Zmr*$,v<y  
2a[_^v $v  
import org.rut.util.algorithm.SortUtil; rw]*Nxgr  
H2D j`0  
/** "T'?Ah6  
* @author treeroot ZHW|P  
* @since 2006-2-2 09C[B+>h  
* @version 1.0 zM mV Yx  
*/ yct^AN|%  
public class HeapSort implements SortUtil.Sort{ c!}f\ ]D  
x1nqhSaD  
/* (non-Javadoc) vW:XM0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =a3qpPkx  
*/ _'47yq^O  
public void sort(int[] data) { -jOCzp  
MaxHeap h=new MaxHeap(); 3gzcpFNqX  
h.init(data); _N&]w*ce  
for(int i=0;i h.remove(); 60u}iiC@  
System.arraycopy(h.queue,1,data,0,data.length); p4-bD_  
} "mm|0PUJ  
(e$/@3*  
private static class MaxHeap{ .^J7^ Ky,  
|p7k2wzN  
void init(int[] data){ ZT;:Hxv0N  
this.queue=new int[data.length+1]; |2eF~tJqc  
for(int i=0;i queue[++size]=data; 0aS&!"o!  
fixUp(size); M)oJ06`K  
} xRx8E;Q@h?  
} W~&PGmRI  
M!ra3Y  
private int size=0; 0 G.y_<=  
d\{#*{_A  
private int[] queue; wEImpsC`  
)FG<|G(  
public int get() { iVKX *kqc  
return queue[1]; ped3}i+|]  
} xgeKz^,  
 #' =rv  
public void remove() { MFyMo  
SortUtil.swap(queue,1,size--); *qLOr6  
fixDown(1); DNy1} 3wg  
} ktr l|  
file://fixdown e8TJ =}\  
private void fixDown(int k) { Z-!W#   
int j; 8\~IwtSk  
while ((j = k << 1) <= size) { :W/,V^x}  
if (j < size %26amp;%26amp; queue[j] j++; U 6y ;V  
if (queue[k]>queue[j]) file://不用交换 jy]< q^J  
break; c !ybz{L  
SortUtil.swap(queue,j,k); C(-bh]J  
k = j; 'ErtiD  
} 6c3+q+#J2  
} FshQ OFW  
private void fixUp(int k) { ?^F#}>C  
while (k > 1) { a/.O, &3  
int j = k >> 1; R,hX *yVq  
if (queue[j]>queue[k]) VK+#!!Ha  
break; ~67L  
SortUtil.swap(queue,j,k); (YjY=F  
k = j; [`^x;*C  
} a$c7d~p$I  
} VY'#>k} }  
"jVMk  
} -IR9^)  
<dTo-P  
} ^Slwg|t*~P  
c FjC  
SortUtil: wovWEtVBU  
K5Fzmo a  
package org.rut.util.algorithm; $cev,OW6]  
^P-!pK*  
import org.rut.util.algorithm.support.BubbleSort; DVYY1!j<  
import org.rut.util.algorithm.support.HeapSort; /q %TjQ}F  
import org.rut.util.algorithm.support.ImprovedMergeSort; %S22[;v{N  
import org.rut.util.algorithm.support.ImprovedQuickSort; 0\AYUa?RM  
import org.rut.util.algorithm.support.InsertSort; Gb%PBg}HH  
import org.rut.util.algorithm.support.MergeSort; l}X3uy S  
import org.rut.util.algorithm.support.QuickSort; apUV6h-v  
import org.rut.util.algorithm.support.SelectionSort; l[ ^bo/  
import org.rut.util.algorithm.support.ShellSort; -t % .I=|  
uH]n/Kv1,  
/** ;w?zmj<Dm  
* @author treeroot io:?JnQSA  
* @since 2006-2-2 Zx<s-J4o=w  
* @version 1.0 KhZ'Ic[vw  
*/ Dw{C_e  
public class SortUtil { MQ"<r,o?:  
public final static int INSERT = 1; * Yov>lO  
public final static int BUBBLE = 2; n$}c+1   
public final static int SELECTION = 3; 52*zX 3  
public final static int SHELL = 4; bdqo2ZO  
public final static int QUICK = 5; P G) dIec  
public final static int IMPROVED_QUICK = 6; hGF:D#jyT  
public final static int MERGE = 7; +98~OInySZ  
public final static int IMPROVED_MERGE = 8; }(J6zo9(x  
public final static int HEAP = 9; 4MRHz{`wa  
uZId.+Rk  
public static void sort(int[] data) { (XT^<#Ga  
sort(data, IMPROVED_QUICK); sJ?Fque  
} E](Ood  
private static String[] name={ kvSSz%R~  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fYx$3a.  
}; LtH;#Q  
[F+lVb  
private static Sort[] impl=new Sort[]{ o?^j1\^  
new InsertSort(), mRfF)  
new BubbleSort(), V}7I? G  
new SelectionSort(), ctdV4%^{  
new ShellSort(), CbS9fc&  
new QuickSort(), R$(,~~MH  
new ImprovedQuickSort(), :(A]Bm3  
new MergeSort(), 7Y @ &&  
new ImprovedMergeSort(), Uh?SDay  
new HeapSort() ^7TM.lE  
}; v8 ggPI  
wC<!,tB(8  
public static String toString(int algorithm){ Q?7U iTZ  
return name[algorithm-1]; t1g)Y|@d  
} 6/s#'#jh  
tQz-tQg  
public static void sort(int[] data, int algorithm) { Sxjwqqv  
impl[algorithm-1].sort(data); sqJ?dIBH  
} 2HkP$;lED  
 ~;il{ym  
public static interface Sort { 5"^$3&)  
public void sort(int[] data); ?8b?{`@V  
} }LDDm/$^}  
gAgzM?A1(  
public static void swap(int[] data, int i, int j) { h+CTi6-p  
int temp = data; &'c1"%*%8>  
data = data[j]; 0z_e3H{P27  
data[j] = temp; #r#UO  
} 5Ee%!Pk  
} !m' lOz  
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