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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。 w@X<</`  
插入排序: }Nl-3I.S^  
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package org.rut.util.algorithm.support; 3A4?9>g)KU  
:r:5a(sq  
import org.rut.util.algorithm.SortUtil;  o9#  
/** Dq*>+1eW2  
* @author treeroot ~!,'z  
* @since 2006-2-2 <'-}6f3  
* @version 1.0 G#)>D$Ck#  
*/ q*@7A6:FV>  
public class InsertSort implements SortUtil.Sort{ 5IBe;o  
E0>4Q\n{  
/* (non-Javadoc) /t%IU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T WEmW&Q  
*/ <QugV3e  
public void sort(int[] data) { !a ~>;+  
int temp; MT$OjH'Q`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^] Lr_k  
} 7}%3Aw6]S  
} ^g~Asz5]  
} -}MWA>an8  
C:_!zY'z  
} @&S4j]rq  
r=s ,Ath  
冒泡排序: oA"t`,3  
TPq5"mco  
package org.rut.util.algorithm.support; b3H~a2"d  
t=~al8  
import org.rut.util.algorithm.SortUtil; J Q%e'  
6t *pV [  
/** -/B}XN W  
* @author treeroot E%3WJ%A  
* @since 2006-2-2 lK9us  
* @version 1.0 8K]fw{-$L  
*/ ><TuL7+  
public class BubbleSort implements SortUtil.Sort{ c|:H/Y2n|  
Od>Ta_  
/* (non-Javadoc) SvAz9>N4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :'f#0ox  
*/ zr\I1v]?1#  
public void sort(int[] data) { l\ts!p4f$  
int temp; PX(.bP2^Lq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j S')!Wcu  
if(data[j] SortUtil.swap(data,j,j-1); Dvo.yn|kB  
} P_z3TK  
} zW!3>(L/  
} 3 {\b/NL$  
} z\oq b) a  
9|D!&=8   
} :w#Zs)N  
H"WkyvqXb  
选择排序: 82YTd(yB  
/$! / F@^  
package org.rut.util.algorithm.support; 6sRn_y  
gJ+MoAM"  
import org.rut.util.algorithm.SortUtil; p=coOWOQ  
Ii?<Lz  
/** & *B@qQ  
* @author treeroot AGx]srl  
* @since 2006-2-2 8,a&i:C  
* @version 1.0 9<.FwV >  
*/ F6}Pwz[c  
public class SelectionSort implements SortUtil.Sort { }C}~)qaZv+  
,1Suq\ L  
/* (NFq/w%  
* (non-Javadoc) q<@f3[A  
* \"V7O'S)&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G+=eu K2]  
*/ kmi[u8iXD_  
public void sort(int[] data) { ?#<Fxme  
int temp; w_ kHy_)  
for (int i = 0; i < data.length; i++) { IwZn%>1N  
int lowIndex = i; e/6WhFN #  
for (int j = data.length - 1; j > i; j--) { n (C*LK  
if (data[j] < data[lowIndex]) { GL cf'$l  
lowIndex = j; .LIEZ^@  
} 0 oEw1!cY  
} Agl5[{]E  
SortUtil.swap(data,i,lowIndex); (WVN*OR?  
} " nq4!  
} TF} <,aR  
rG:IS=  
} *%:p01&+  
z. VuY3  
Shell排序: YKJk)%;+w  
)p~\lM}?d  
package org.rut.util.algorithm.support; d0Py[37V  
7Z0 )k9*  
import org.rut.util.algorithm.SortUtil; ~Hd{+0  
k v,'9z  
/** `ihlKFX  
* @author treeroot `pn]jpW9  
* @since 2006-2-2 TKx.`Cf m  
* @version 1.0 7ib~04  
*/ O/e5LA  
public class ShellSort implements SortUtil.Sort{ Gx|$A+U  
jF<Y,(C\  
/* (non-Javadoc) 1tDd4r?Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m>x.4aO1  
*/ \;&j;"c,W  
public void sort(int[] data) { 54_CewL1P]  
for(int i=data.length/2;i>2;i/=2){ h1z[ElEeoP  
for(int j=0;j insertSort(data,j,i); nC$f0r"z  
} xlp^XT6#  
} ]!d #2(  
insertSort(data,0,1); MOP/q4j[  
} >~){KV1~  
R56:}<Y,  
/** >)R7*^m{'  
* @param data IiHl"2+/  
* @param j 3Nd&*QSV  
* @param i )-xx$0mL-  
*/ EFW'D=&h8  
private void insertSort(int[] data, int start, int inc) { <ap%+(!I  
int temp; gGxgU$`#c  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i;s&;_0{  
} [c +[t3dz  
}  "9!ln  
} jX-v9eaA  
M`-#6,m3  
} X~*1  
u> XCE|D*  
快速排序:  \U(qv(T  
F-R4S^eV  
package org.rut.util.algorithm.support; ZN~:^,PO/  
"^fcXV9Wp  
import org.rut.util.algorithm.SortUtil; H{VVxj  
\EuMzb"G9p  
/** w= |).qQ]  
* @author treeroot hD/bgquT  
* @since 2006-2-2 Z*tB=  
* @version 1.0 3Wa^:8N  
*/ !o+#T==p  
public class QuickSort implements SortUtil.Sort{ [w' Y3U\ i  
ry\Nm[SQ  
/* (non-Javadoc) 7;:R\d6iL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EdlU}LU  
*/ q(p]6Ha|  
public void sort(int[] data) { -Ob'/d5&  
quickSort(data,0,data.length-1); i^eU!^KF  
} #f0J.)M  
private void quickSort(int[] data,int i,int j){ bX6eNk-L  
int pivotIndex=(i+j)/2; 2 DJs '"8  
file://swap 7m~.V[l1  
SortUtil.swap(data,pivotIndex,j); y2;uG2IS_g  
yDg`9q.ckm  
int k=partition(data,i-1,j,data[j]); eU&[^  
SortUtil.swap(data,k,j); ]dHU  
if((k-i)>1) quickSort(data,i,k-1); .t*MGUg  
if((j-k)>1) quickSort(data,k+1,j); FloCR=^H  
8iaP(*J  
} }enm#0Ha  
/** PN:/lIO  
* @param data H:Y?("k  
* @param i @W[`^jfQ  
* @param j f]W$4f {  
* @return %ZF47P%6  
*/ [v ( \y  
private int partition(int[] data, int l, int r,int pivot) { 15U]/?jv8  
do{ ZX[ @P?A+-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); /Fy2ZYs,`8  
SortUtil.swap(data,l,r); b-ZC~#?|b  
} ^&F8NEb=2>  
while(l SortUtil.swap(data,l,r); h)fJ2]JW8W  
return l; fQ33J>  
} `n7*6l<k~4  
Z`y%#B6x.  
} Y> ElE-  
!LB#K?I  
改进后的快速排序: ;)].Dj9  
 G`8i{3:  
package org.rut.util.algorithm.support; bHZXMUewC  
nb::,  
import org.rut.util.algorithm.SortUtil; ]awu7}C9Z  
luXcr H+w  
/** 0`VA} c  
* @author treeroot Mhp6,JL  
* @since 2006-2-2 3]"RaI4Q0  
* @version 1.0 V<:scLm#OF  
*/ 8 SFw|   
public class ImprovedQuickSort implements SortUtil.Sort { ;}"!|  
vncLB&@7  
private static int MAX_STACK_SIZE=4096; DdDwMq  
private static int THRESHOLD=10; @c,Qj$\1  
/* (non-Javadoc) fGS5{dti  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p?F%a;V3  
*/ Xy/lsaVskX  
public void sort(int[] data) { TK^9!3  
int[] stack=new int[MAX_STACK_SIZE]; :'p+Ql~c  
K,_d/(T4  
int top=-1; ;|7]%Z}%  
int pivot; 3H"bivK  
int pivotIndex,l,r; Iow45R~]  
7bJAOJ'_  
stack[++top]=0; x h|NmZg  
stack[++top]=data.length-1; _voU^-  
21ng94mC  
while(top>0){ 0 ~K4vSa  
int j=stack[top--]; |uL"/cMW7  
int i=stack[top--]; :+Ti^FF`w  
r0jhIE#  
pivotIndex=(i+j)/2;  {}x{OP  
pivot=data[pivotIndex]; ~Y;_vU  
"A?&`}%  
SortUtil.swap(data,pivotIndex,j); K6 D3  
86+nFk  
file://partition bz$)@gLc  
l=i-1; a2Q_K2t  
r=j; 4FLL*LCNX  
do{ (NB\wJg $  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G_OLUuK?C  
SortUtil.swap(data,l,r); mtfEK3?2*  
} NABVU0}   
while(l SortUtil.swap(data,l,r); nz-( 8{ae  
SortUtil.swap(data,l,j); @px 4[  
wX?< o  
if((l-i)>THRESHOLD){ &\Kp_AR  
stack[++top]=i; 3jx5Lou)&  
stack[++top]=l-1; SA3!a.*c  
} W<']Q_su  
if((j-l)>THRESHOLD){ 6IRzm6d  
stack[++top]=l+1; .zDm{_'  
stack[++top]=j; |Iq#Q3w  
}  3"B$M  
]CL t Km  
} XNZW J  
file://new InsertSort().sort(data); s,~)5nL  
insertSort(data); >2kjd  
} R8"qDj  
/** H!6nIS9yxt  
* @param data V'n4iM  
*/ ftr?@^  
private void insertSort(int[] data) { d9bc>5%-F  
int temp; o]gS=iLp  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UB5X2uBv  
} uPZ<hG#K  
} znVao %b  
} Fkq;Q  
0{0A,;b  
} 6KpG,%2L#  
b`%(.&  
归并排序: /U1&#"P  
w]-,X`  
package org.rut.util.algorithm.support; H<YhO&D*u  
7|vB\[s  
import org.rut.util.algorithm.SortUtil; ;`CNe$y   
T1Gy_ G/  
/** FEoH$.4  
* @author treeroot ;giW  
* @since 2006-2-2 e3YdHp  
* @version 1.0 I{rW+<)QGC  
*/ Wa{()Cz  
public class MergeSort implements SortUtil.Sort{ 85fv])\y  
E 0k1yA  
/* (non-Javadoc) WJXQM[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !`UHr]HJ  
*/ %+A z X  
public void sort(int[] data) { %BV 2 q  
int[] temp=new int[data.length]; <Oyxzs  
mergeSort(data,temp,0,data.length-1); :f9O3QA  
} c+_F}2)  
0qdgt  
private void mergeSort(int[] data,int[] temp,int l,int r){ heF<UMI  
int mid=(l+r)/2; QAI!/bB  
if(l==r) return ; Tw)"#Y!T  
mergeSort(data,temp,l,mid); /d/Quro  
mergeSort(data,temp,mid+1,r); #" 3az8u  
for(int i=l;i<=r;i++){ C{"uz_Gh  
temp=data; ?:8wDV  
} "M`ehgCBr  
int i1=l; c <T'_93  
int i2=mid+1; VlLc[eVV  
for(int cur=l;cur<=r;cur++){ !"dn!X  
if(i1==mid+1) !Eof7LUE  
data[cur]=temp[i2++]; <kY ||  
else if(i2>r) ,:G3Y )  
data[cur]=temp[i1++]; kJy bA  
else if(temp[i1] data[cur]=temp[i1++]; 71$MhPvd<  
else i*q!|^M  
data[cur]=temp[i2++]; c2$&pZ M  
} q%^vx%aL\  
} MZ/PXY  
74hQ?Atw:  
} $AI0&#NM  
bM%c*_$F7  
改进后的归并排序: lMcSe8LBQa  
vW\|% @hW,  
package org.rut.util.algorithm.support; [u=DAk?8  
K9BoIHo  
import org.rut.util.algorithm.SortUtil; TAXl73j_CY  
#_zd`s3k  
/** Qey6E9eCA  
* @author treeroot DJm/:td  
* @since 2006-2-2 t G{?  
* @version 1.0 Aj22t   
*/ WecJ^{g>r{  
public class ImprovedMergeSort implements SortUtil.Sort { *C0gpEf9S  
CYxrKW l:'  
private static final int THRESHOLD = 10; Rlq6I?S+  
7+h*&f3>  
/* wn$:L9"YN  
* (non-Javadoc) _:tclBc8R  
* c= -2c&=&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =XT'D@q~W  
*/ wu2AhMGmw  
public void sort(int[] data) { h/CF^0m"!  
int[] temp=new int[data.length]; 0 CJ4]mYl  
mergeSort(data,temp,0,data.length-1); ji &*0GJQ  
} bhFAt1h  
h0N*hx   
private void mergeSort(int[] data, int[] temp, int l, int r) { JKFV7{ %Gl  
int i, j, k; ? 77ye  
int mid = (l + r) / 2; @c8s<9I]  
if (l == r) SwDUg}M~  
return; {mlJE>~%  
if ((mid - l) >= THRESHOLD) })l+-H"  
mergeSort(data, temp, l, mid); yk5T"# '+  
else >Kd(.r[Er  
insertSort(data, l, mid - l + 1); (5"BKu1t  
if ((r - mid) > THRESHOLD) cZ" Ut  
mergeSort(data, temp, mid + 1, r); JMMsOA_]  
else J{Z-4y  
insertSort(data, mid + 1, r - mid); zn |=Q$81  
wmNc)P4  
for (i = l; i <= mid; i++) { Wu 71q=  
temp = data; OGy/8B2c  
} p,?8s%  
for (j = 1; j <= r - mid; j++) { '9,14e6   
temp[r - j + 1] = data[j + mid]; v!;E1  
} ,]N!I%SI  
int a = temp[l]; d E@R7yU@  
int b = temp[r]; `;^%t  
for (i = l, j = r, k = l; k <= r; k++) { @UO=)PxN3  
if (a < b) { Z {ntF  
data[k] = temp[i++]; Cf_Ik  
a = temp; PAe2 hJ  
} else { zN\~v  
data[k] = temp[j--]; NRS!Ox  
b = temp[j]; @"~Mglgw  
} %qzpt{'?<  
} 7eh|5e$@  
} mf26AIlkQ  
y>S.B/ d  
/** F:/R'0  
* @param data 5JbPB!5;  
* @param l 'DQp  
* @param i t[6g9e$  
*/ ;+-$=l3[a  
private void insertSort(int[] data, int start, int len) { ]|q\^k)JU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); i\S } aCm  
} [@}{sH(#Ta  
} }lgqRg)F9[  
} Av*R(d=`  
} (BC3[R@/l  
}9=\#Le~\  
堆排序: O_f|R1G5z  
/$hfd?L  
package org.rut.util.algorithm.support; `d=$9Pi  
Z`xz|:D+  
import org.rut.util.algorithm.SortUtil; PL8{|Q  
F}Bc +i#]  
/** iSxxy1R  
* @author treeroot 'JEZ;9}  
* @since 2006-2-2 TJ9,c2d+  
* @version 1.0 _%s_w)  
*/ B{ NKDkDH  
public class HeapSort implements SortUtil.Sort{ FhB^E$r%  
Vgs( feGs  
/* (non-Javadoc) JF*JF Ob  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0xL;@rBe  
*/ x5m .MQ J  
public void sort(int[] data) { r^P}xGGK  
MaxHeap h=new MaxHeap(); "F+ 9xf&r  
h.init(data); Jkt L|u:k  
for(int i=0;i h.remove(); H ^Xw<Z=  
System.arraycopy(h.queue,1,data,0,data.length); DYH-5yX7  
} ( $3j  
'uUp1+  
private static class MaxHeap{ v@k62@;  
~?vm97l  
void init(int[] data){ :~^ec|tp  
this.queue=new int[data.length+1]; qy@gW@IU  
for(int i=0;i queue[++size]=data;   [E(DGt  
fixUp(size); ?B %y)K  
} 8\8uXOS  
} gQ h0-Dnw  
u+s#Fee I  
private int size=0; L6j 5pI  
$*%Ml+H-  
private int[] queue; uL b- NxQ-  
dUn8Xqj1  
public int get() { o})4Jt1vj  
return queue[1]; -!MDYj+U  
}  ew4IAF  
@hm %0L  
public void remove() { TE*$NxQ 2  
SortUtil.swap(queue,1,size--); 0+8ThZ?n  
fixDown(1); %_1~z[Dv  
} 76)(G/  
file://fixdown j:|60hDz^  
private void fixDown(int k) { mf@YmKbp  
int j; -3Vx jycY  
while ((j = k << 1) <= size) {  | qHWM  
if (j < size %26amp;%26amp; queue[j] j++; R*TCoEKO  
if (queue[k]>queue[j]) file://不用交换 #'<I!G  
break; h^>kjMM  
SortUtil.swap(queue,j,k); xn@?CP`-y  
k = j; v%&f00  
} jjvm<;lv  
} .,,?[TI  
private void fixUp(int k) { 5%?La`C9[  
while (k > 1) { P,iLqat  
int j = k >> 1; Vw9^otJu  
if (queue[j]>queue[k]) * @G4i  
break; 5G){7]P+r"  
SortUtil.swap(queue,j,k); *^c4q|G.-  
k = j; [ZURs3q  
} /^uvY  
} Njq#@*>[p  
2O9dU 5b  
} ACl:~7;  
\\hZlCV,  
} M)EKS  
-5v c0"?E  
SortUtil: z}C#+VhQ`  
35RH|ci&  
package org.rut.util.algorithm; NfR,m ]  
[X^JV/R  
import org.rut.util.algorithm.support.BubbleSort; v.6" <nT2  
import org.rut.util.algorithm.support.HeapSort; =]xNpX)  
import org.rut.util.algorithm.support.ImprovedMergeSort; .1I];Cy0D  
import org.rut.util.algorithm.support.ImprovedQuickSort; :`3b|u=KZ  
import org.rut.util.algorithm.support.InsertSort; }jiqUBn%  
import org.rut.util.algorithm.support.MergeSort; ADv a@P  
import org.rut.util.algorithm.support.QuickSort; 6{azzk8  
import org.rut.util.algorithm.support.SelectionSort; K^{`8E&A  
import org.rut.util.algorithm.support.ShellSort; Yc?taL)  
Z mi<Z  
/** 83i%3[L  
* @author treeroot W %R h2l  
* @since 2006-2-2 ~8pf.^,fi  
* @version 1.0 QJdSNkc6  
*/ AV d  
public class SortUtil { @dCu]0oNI  
public final static int INSERT = 1; ^#3$C?d  
public final static int BUBBLE = 2; gyCb\y+\a  
public final static int SELECTION = 3; $o]zNW;X  
public final static int SHELL = 4; ;S`Nq%,  
public final static int QUICK = 5; mkE*.I0=  
public final static int IMPROVED_QUICK = 6; IH~H6US  
public final static int MERGE = 7; 2z0HB+Y}x  
public final static int IMPROVED_MERGE = 8; (m04Z2#  
public final static int HEAP = 9; mZ/B:)_  
jcq(=7j  
public static void sort(int[] data) { :jp?FF^j;  
sort(data, IMPROVED_QUICK); ?783LBe  
} hD >:WJ  
private static String[] name={ wmo'Pl  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  QV .A.DK  
}; &@+K%qW[e  
gP( -Op  
private static Sort[] impl=new Sort[]{ @/$mZ]|T  
new InsertSort(), F|P2\SPL  
new BubbleSort(), "bf8[D  
new SelectionSort(), n+Ag |.,|  
new ShellSort(), <*(~x esPS  
new QuickSort(), p+8]H %  
new ImprovedQuickSort(), 7vj[ AOq3l  
new MergeSort(), z%Z}vWn  
new ImprovedMergeSort(), &g& &-=7)  
new HeapSort() =l7LEkR  
}; sM5 w~R>Y  
TdQ^^{SRp  
public static String toString(int algorithm){ r]HLO'<]  
return name[algorithm-1]; !%s7I ^f*  
} "apv)xdW  
KG3*~G  
public static void sort(int[] data, int algorithm) { =JVRm 2#*  
impl[algorithm-1].sort(data); =dA T^e##  
} (ZEVbAY?i  
|%RFXkHS  
public static interface Sort { GU[ Cq=k  
public void sort(int[] data); `=KrV#/758  
} iT5H<uS  
0a'@J~v!  
public static void swap(int[] data, int i, int j) { ~!&[;EM<bm  
int temp = data; M9&tys[KX  
data = data[j]; ~ml\|  
data[j] = temp; g8x8u|  
} ]_pL79y  
} 7>~iS@7GV  
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