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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。 eR8h4M~O  
插入排序: )7c^@I;7  
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package org.rut.util.algorithm.support; ?=Ma7 y  
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import org.rut.util.algorithm.SortUtil; R:^GNra;  
/** l}:9)nXA{  
* @author treeroot ~[ve?51  
* @since 2006-2-2 cJi5\<b  
* @version 1.0 //V?rs  
*/ (nvSB}?  
public class InsertSort implements SortUtil.Sort{ G^)|c<'M  
/+02 BP  
/* (non-Javadoc) |`:Uww+3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \$riwL  
*/ O3Ks|%1  
public void sort(int[] data) { (MJu3t @  
int temp; =_.Zv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); iwrdZLE  
} )9L1WOGi  
} E*rDwTd  
} T'f E4}rY  
P9X/yZ42  
} ^[^uDE <  
=0x[Sa$&,  
冒泡排序: )0qXZ gs  
VPtA %1  
package org.rut.util.algorithm.support; xJc'tT6@  
rpDH>Hzq  
import org.rut.util.algorithm.SortUtil; D&Ngg)_Mq  
F?5kl/("  
/** 3smcCQA%  
* @author treeroot Z#"6&kv  
* @since 2006-2-2 .`xcR]PQ  
* @version 1.0 JGH9b!}-1  
*/ X$PT-~!a  
public class BubbleSort implements SortUtil.Sort{ u8-)LOf(  
<<4G GO  
/* (non-Javadoc) 8c]\4iau  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2{@: :JZ  
*/ NoDq4>   
public void sort(int[] data) { U:YT>U1Z  
int temp; 2JtGS-t  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ed>_=i  
if(data[j] SortUtil.swap(data,j,j-1); <J?i+b  
} G8akMd]2  
} $\m=-5 0-  
} y~p7&^FeR  
} F}i rCi47c  
!Y`nKC(=z  
} 36&7J{MU  
@: %}clZ  
选择排序: tEBf2|<  
+>c)5Jih  
package org.rut.util.algorithm.support; pEhWgCL  
!Bu<6  
import org.rut.util.algorithm.SortUtil; |wVoJO!O}  
UI>-5,X  
/** %oC]Rpdu  
* @author treeroot %Ljc#AVg  
* @since 2006-2-2 nSgg'I(  
* @version 1.0 *!l q1h  
*/ r`28fC  
public class SelectionSort implements SortUtil.Sort { a] >|2JN<&  
/c__{?go  
/* 1cOp"!  
* (non-Javadoc) a,lH6lDk  
* L-G186B$r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P{rJG '  
*/ * Oyic3F  
public void sort(int[] data) { ^_)CQ%W?  
int temp; EUUj-.dEN  
for (int i = 0; i < data.length; i++) { kc/h]B  
int lowIndex = i; .R biF  
for (int j = data.length - 1; j > i; j--) { &<.Z4GxS  
if (data[j] < data[lowIndex]) { mxGvhkj  
lowIndex = j; o.}^6.h"  
} &&JI$x0;  
} |WubIj*\{  
SortUtil.swap(data,i,lowIndex); ?ix0n,m  
} QF[9Zn  
} q w|M~vdm  
EzzzH(!j  
} 3)42EM'9(  
= eTI@pN`  
Shell排序: +apIp(E+  
"LXLUa03  
package org.rut.util.algorithm.support; My_fm?n  
4ol=YGCI_  
import org.rut.util.algorithm.SortUtil; ,MOB+i(3*u  
|FPx8b;#  
/** 2tn%/gf'm  
* @author treeroot BQ_\8Qt|  
* @since 2006-2-2 7{az %I$h  
* @version 1.0 sy/J+==  
*/ ][wS}~):  
public class ShellSort implements SortUtil.Sort{ nGX~G^mZ  
_Y\@{T;^Zb  
/* (non-Javadoc) vk;>#yoox  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Me%W3  
*/ vaR0`F  
public void sort(int[] data) { ,ulNap"R  
for(int i=data.length/2;i>2;i/=2){ &WvJg#f  
for(int j=0;j insertSort(data,j,i); '#u2q=n4*  
} bis/Nfr]  
} iWQBo>x  
insertSort(data,0,1); 3S'V>:  
} R%3H"FU9w  
|W*f 6F3  
/** !!Mp;h'}-  
* @param data #8nF8J< 4  
* @param j 9OT2yC T  
* @param i &\C vrxa  
*/ EB@!?=0x  
private void insertSort(int[] data, int start, int inc) { a-i#?hld  
int temp; Z4h P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HzH_5kVW  
} W,AIE 6F  
} zL)S,  
} { H9pF2C  
CAc nH  
} n (cSfT  
 \2eYw.I=  
快速排序: }})4S;j  
<|Z0|sel  
package org.rut.util.algorithm.support; ,EwJg69  
-cq ~\m^6  
import org.rut.util.algorithm.SortUtil; Of([z!'Gc  
Ie4*#N_  
/** uz'beE  
* @author treeroot |W:kzTT-T  
* @since 2006-2-2 ua7I K~8l  
* @version 1.0 ~}4H=[Zu  
*/ nwcT8b 87J  
public class QuickSort implements SortUtil.Sort{ 8Bhot,u'T  
s8eiq`6\H}  
/* (non-Javadoc) r<C^hs&]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o~es> ;  
*/ z{!wQ~ j  
public void sort(int[] data) {  tEP^w  
quickSort(data,0,data.length-1); Kau*e8  
} hh:)"<[  
private void quickSort(int[] data,int i,int j){ WxO*{`T!  
int pivotIndex=(i+j)/2;  ] mP-HFl  
file://swap Q&M(wnl5  
SortUtil.swap(data,pivotIndex,j); /0SPRf}p  
|U7{!yy%MF  
int k=partition(data,i-1,j,data[j]); y=  
SortUtil.swap(data,k,j); &Lq @af#  
if((k-i)>1) quickSort(data,i,k-1); S@_@hFV jd  
if((j-k)>1) quickSort(data,k+1,j); OQ!mL3f  
3UrqV`x \  
} *'exvY~  
/** G ROl9xp2  
* @param data b[RBp0]x  
* @param i ch : 428  
* @param j %@pTEhpF  
* @return JmN;v|wF:c  
*/ eTrGFe!8w  
private int partition(int[] data, int l, int r,int pivot) { J>Zd75;U  
do{ Y71b Lg  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); J anLJe)  
SortUtil.swap(data,l,r); cs@5K$v  
} BA t2m-  
while(l SortUtil.swap(data,l,r); VT'$lB%IK  
return l; D4o?  
} K=06I  
Y6{p|F?&"  
} jh8%Xu]t  
Eda sGCo  
改进后的快速排序: Saz+GQ G  
#3/l4`/j  
package org.rut.util.algorithm.support; _f34p:B%s  
!+fHdB  
import org.rut.util.algorithm.SortUtil; eh)J'G]G  
,&)XhO?  
/** = b)q.2'#  
* @author treeroot Pv0OoN*eJ{  
* @since 2006-2-2 |c >  
* @version 1.0 &BE[=& |  
*/ s|{K?s  
public class ImprovedQuickSort implements SortUtil.Sort { Bwll [=_I  
uVisU%p  
private static int MAX_STACK_SIZE=4096; %FyB\IQ  
private static int THRESHOLD=10; f#X`e'1  
/* (non-Javadoc) mX|AptND  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]7xAL7x  
*/ wz6e^ g  
public void sort(int[] data) { [N7[%iQ%  
int[] stack=new int[MAX_STACK_SIZE]; "aa6W  
1bj75/i<6  
int top=-1; 1U"Y'y2  
int pivot; !' sDqBZ&7  
int pivotIndex,l,r; -@J;FjrXmP  
c[",WB<9  
stack[++top]=0; cUy6/x9&  
stack[++top]=data.length-1; Yn I   
da[l[b;  
while(top>0){ sDbALAp +  
int j=stack[top--]; _0vXujz  
int i=stack[top--]; Hs-NP#I  
)n0g6  
pivotIndex=(i+j)/2; %8 4<@f&n]  
pivot=data[pivotIndex]; '`3-X];p  
Ogjjjy84vM  
SortUtil.swap(data,pivotIndex,j); &"^A  
t-E'foYfr`  
file://partition /!%P7F  
l=i-1; 8n&",)U  
r=j; EkTen:{G  
do{ P, S9gG9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4AF" +L  
SortUtil.swap(data,l,r); f-{[ushj  
} IndNR:"g  
while(l SortUtil.swap(data,l,r); EO| kiC   
SortUtil.swap(data,l,j); =#+Z KD  
9Pem~<  
if((l-i)>THRESHOLD){ `I'=d4  
stack[++top]=i; ,#"AWQ  
stack[++top]=l-1; JBWiTUk  
} ZFdQ Z=.'  
if((j-l)>THRESHOLD){ gV`:eNo*  
stack[++top]=l+1; sO(Kpo9jq  
stack[++top]=j; s;5PHweWf  
} JL(*peeu3  
*dKA/.g  
}  j, G/[V  
file://new InsertSort().sort(data); YJ75dXc&&  
insertSort(data); ueWG/`ig  
} %[p[F~Z^Z  
/** c6lEWC:  
* @param data &.4lhfI+(Q  
*/ (bT\HW%m  
private void insertSort(int[] data) { L>@6lhD)x  
int temp; 3\'.1p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h hd n9n  
} |Ec$%  
} CMF1<A4]  
} r/{VL3}F_e  
)8Q|y  
} .upcUS8  
fqZ!Bi  
归并排序: ?>AhC{  
K=B[MT#V{2  
package org.rut.util.algorithm.support; 6,c,i;J_  
v-Br)lLv  
import org.rut.util.algorithm.SortUtil; }%jb/@~  
}_gq vgI>p  
/** s]2k@3|e  
* @author treeroot uvmNQg  
* @since 2006-2-2 iT|+<h  
* @version 1.0 -)$)<k  
*/ M>v M@j  
public class MergeSort implements SortUtil.Sort{ NGxii$F  
M(2[X/t  
/* (non-Javadoc) 9#3+k/A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -6H)GK14b  
*/ JdV!m`XpXy  
public void sort(int[] data) { z2 dM*NMK  
int[] temp=new int[data.length]; pCC0:  
mergeSort(data,temp,0,data.length-1); YTGup]d  
} cAiIbh>c  
bMv9f J  
private void mergeSort(int[] data,int[] temp,int l,int r){ L4[ bm[x  
int mid=(l+r)/2; {{ wVM:1  
if(l==r) return ; MK"Yt<e(o  
mergeSort(data,temp,l,mid); Y{J/Oib  
mergeSort(data,temp,mid+1,r); "1[N;|xa  
for(int i=l;i<=r;i++){ ga,yFw  
temp=data; +HfjnEbtBs  
} aG" UV\  
int i1=l; m|-O/6~  
int i2=mid+1; %ZQl.''ISa  
for(int cur=l;cur<=r;cur++){ gbInSp`4  
if(i1==mid+1) Qe4  
data[cur]=temp[i2++]; RCmPZ  
else if(i2>r) -|3U0: 'm  
data[cur]=temp[i1++]; ^iI^)  
else if(temp[i1] data[cur]=temp[i1++]; 5-C6;7%:  
else 7'&Xg_  
data[cur]=temp[i2++];  !c*^:0  
} T}\U:@b  
} &O%Kj8)  
;bA9(:?  
} I{RktO;1  
fB:M'A'  
改进后的归并排序: p(U'Ydl~  
z.jGVF4  
package org.rut.util.algorithm.support; MT V'!Zxs  
/`'50C j  
import org.rut.util.algorithm.SortUtil; fO:*85 %}7  
zY#U]Is  
/** ^QnVYTM  
* @author treeroot +0=RC^   
* @since 2006-2-2 *PMql$  
* @version 1.0 `b] NB^/  
*/ oF*Y$OEu?c  
public class ImprovedMergeSort implements SortUtil.Sort { fqr}tvMr=T  
cw^FOV*  
private static final int THRESHOLD = 10; 0<s)xaN>Y  
[t6)M~&e:_  
/* wo_FM `@  
* (non-Javadoc) a;h:o>Do5  
* sF|$oyDE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K]7@%cS  
*/ |C(72t?K  
public void sort(int[] data) { "qDEI}  
int[] temp=new int[data.length]; .&[nS<~`  
mergeSort(data,temp,0,data.length-1); L?Lp``%bI7  
} M P3E]T~:  
b ;}MA7=  
private void mergeSort(int[] data, int[] temp, int l, int r) { t7~mW$}O  
int i, j, k; nY*ODL  
int mid = (l + r) / 2; m?m,w$K  
if (l == r) qQom=x  
return; U ^,ld`  
if ((mid - l) >= THRESHOLD) PD$'xY|1=  
mergeSort(data, temp, l, mid); MDB}G '  
else W5x]bl#  
insertSort(data, l, mid - l + 1); UGN. ]#"#  
if ((r - mid) > THRESHOLD) jAJkCCG  
mergeSort(data, temp, mid + 1, r); WK=!<FsC$  
else 1/{:}9Z@  
insertSort(data, mid + 1, r - mid); 2HTZ, W  
I@z{G r  
for (i = l; i <= mid; i++) { \{&55>  
temp = data; i 9b^\&&  
} '!Sj]+  
for (j = 1; j <= r - mid; j++) { _{ba  
temp[r - j + 1] = data[j + mid]; |_ @iaLE  
} |fJ,+)_(  
int a = temp[l]; ?(|!VLu  
int b = temp[r]; m.$Oo Mu'  
for (i = l, j = r, k = l; k <= r; k++) { {-E{.7  
if (a < b) { \(z)]D  
data[k] = temp[i++]; gr2zt&Z4  
a = temp; ,sc>~B@Q  
} else { *|jqRfa"  
data[k] = temp[j--]; "TxXrt%>A  
b = temp[j]; RM`8P5i]sF  
} 62zlO{ >rJ  
} kO5KZ;+N-  
} U{R*WB b  
y=&)sq  
/** k9bU<  
* @param data >a0;|;hp  
* @param l FINM4<s)  
* @param i 7'o?'He-.2  
*/ w"sRK  
private void insertSort(int[] data, int start, int len) { Y# lE  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); #?-W.  
} #F9$"L1Hg  
} @-7K~in?^  
} 1X{A}9nA  
} ]xS< \{og  
x##Iv|$  
堆排序: *(HH71Y  
c]n4vhUa5  
package org.rut.util.algorithm.support; XRz.R/  
"2;UXX-H  
import org.rut.util.algorithm.SortUtil; r|P4|_No  
HL)1{[|`  
/** ZWr\v!4  
* @author treeroot p*N+B o  
* @since 2006-2-2 m2V4nxw]Qp  
* @version 1.0 :4 ;>).  
*/ g3 qtWS  
public class HeapSort implements SortUtil.Sort{ Ii K&v<(]  
;;U2I5 M7  
/* (non-Javadoc) t,H,*2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )8vcg{b{d  
*/ s_kI\w4(x1  
public void sort(int[] data) { M'g4alS  
MaxHeap h=new MaxHeap();  (0k0gq;  
h.init(data); 'LX=yL]I  
for(int i=0;i h.remove(); [2 Rp.?  
System.arraycopy(h.queue,1,data,0,data.length); crmnh4-  
} kTnvD|3_!P  
-&HN h\  
private static class MaxHeap{ ; lK2]  
2f-Z\3)9 J  
void init(int[] data){ GRs;-Jt  
this.queue=new int[data.length+1]; l"vT@ g|  
for(int i=0;i queue[++size]=data; foN;Q1?lS  
fixUp(size); hQk mB|];5  
} ";zl6g"  
} pGOS'.K%t8  
%+'&$  
private int size=0; (_W[~df4  
q5`Gl  
private int[] queue; |6uEf/*DX  
CZ0 {*K:  
public int get() { 9 np<r82  
return queue[1]; W]R5\ G*  
} gG $o8c-  
A#p@`|H#B  
public void remove() { 1%+0OmV&  
SortUtil.swap(queue,1,size--); Llzowlfe  
fixDown(1); P"~ B2__*  
} ?r@ZTuq#  
file://fixdown mhs%b4'>  
private void fixDown(int k) { T^Z#x-Q  
int j; !KF;Z|_(I  
while ((j = k << 1) <= size) { - Zw"o>  
if (j < size %26amp;%26amp; queue[j] j++; N[mOJa:  
if (queue[k]>queue[j]) file://不用交换 Ea3tF0{  
break; G{s ,Y^  
SortUtil.swap(queue,j,k); $4?%Z>'  
k = j; k20H|@g2  
} `C=p7 %  
} m+!%+S1  
private void fixUp(int k) { J^?O] |  
while (k > 1) { >:K3y$]_  
int j = k >> 1; c1z5t]d   
if (queue[j]>queue[k]) N1SRnJu<f  
break; ?e ~*,6  
SortUtil.swap(queue,j,k); O35f5Kz  
k = j; :3G9YjzC}  
} G/D{K$=t~  
} \myc n/e  
]-q:Z4rb  
} [F>zM  
n%O`K{86  
} ^X?[zc GE  
;Joo!CXHO  
SortUtil: .K0BK)axO  
Z uE 0'9  
package org.rut.util.algorithm; 2ru6 bIb;  
\2LCpN  
import org.rut.util.algorithm.support.BubbleSort; 1DBzD%@Oz  
import org.rut.util.algorithm.support.HeapSort; !K@y B)9  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^8\pJg_0  
import org.rut.util.algorithm.support.ImprovedQuickSort; G(4k#jB  
import org.rut.util.algorithm.support.InsertSort; $M><K  
import org.rut.util.algorithm.support.MergeSort; y}3V3uqK  
import org.rut.util.algorithm.support.QuickSort; QO%LSRw  
import org.rut.util.algorithm.support.SelectionSort; zzxU9m~"  
import org.rut.util.algorithm.support.ShellSort; B O"+m  
{!="PnB  
/** %?g]{  
* @author treeroot {7;T Q?/  
* @since 2006-2-2 :DZiDJ@  
* @version 1.0 6?Wsg`9  
*/ j9,X.?Xvx  
public class SortUtil { |)lo<}{  
public final static int INSERT = 1; Tu"yoF  
public final static int BUBBLE = 2; m760K*:i\  
public final static int SELECTION = 3; T&h|sa(   
public final static int SHELL = 4; ' ZB%McS  
public final static int QUICK = 5; f]hW>-B(q  
public final static int IMPROVED_QUICK = 6; (Hs frc  
public final static int MERGE = 7; .!`j3W]  
public final static int IMPROVED_MERGE = 8; ,rN7X<s54  
public final static int HEAP = 9; >s>5k O  
d p?uq'  
public static void sort(int[] data) { ]f\rB8k|&  
sort(data, IMPROVED_QUICK); K[9<a>D`  
}  {<i!Pm  
private static String[] name={ }Jc^p  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" CUtk4;^y#  
}; ?,!qh  
)Qo6bei!  
private static Sort[] impl=new Sort[]{ QR#,n@fE  
new InsertSort(), (kSk bwu  
new BubbleSort(), EUNG&U  
new SelectionSort(), 9f V57  
new ShellSort(), N0XGW_f  
new QuickSort(), XR+2|o  
new ImprovedQuickSort(), 9*x9sfCv9  
new MergeSort(), 57#:GN$EL  
new ImprovedMergeSort(), X$xqu\t7  
new HeapSort() "47nc1T+n  
}; 8=?I/9Xh  
-8TLnl~[  
public static String toString(int algorithm){ ;CC[>  
return name[algorithm-1]; 8?(4E 'vf  
} }{ P}P}  
Rw7Q[I5z%  
public static void sort(int[] data, int algorithm) { w?R6$n`  
impl[algorithm-1].sort(data); lyT~>.?{  
} ND`~|6yb  
2vur _`c V  
public static interface Sort { oi!E v_h  
public void sort(int[] data); 1]qhQd-u  
} C{,nDa?|  
d9^h YS{  
public static void swap(int[] data, int i, int j) { OU[Sm7B  
int temp = data; c2y5[L7?  
data = data[j]; 4v{gc/g  
data[j] = temp; c1Hv^*Y  
} )9*-Q%zc  
} ]02V,'x  
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