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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。 l@r wf$-  
插入排序: E8_Le  
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package org.rut.util.algorithm.support; t tFY _F~S  
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import org.rut.util.algorithm.SortUtil; E\~ KVn  
/** RE $3| z  
* @author treeroot |W*@}D  
* @since 2006-2-2 %=9yzIjbAt  
* @version 1.0 uO@3vY',n  
*/ D&l ,SD  
public class InsertSort implements SortUtil.Sort{ UlNfI}#X  
1Dya?}3  
/* (non-Javadoc) B$TChc3B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @ Rx6 >52>  
*/ 6w"( y~c1  
public void sort(int[] data) { @D~+D@i$TW  
int temp; 'nWs0iH.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _gm?FxV:  
} n<<=sj$\!  
} )w2K&Zr0  
} Mp"'?zf  
ct}%Mdg  
} pq[X)]z|  
W .`Xm(y  
冒泡排序: Z%5nVsm:G  
g:DTVq  
package org.rut.util.algorithm.support; 4s~HfxYT  
#CA%]*l*F  
import org.rut.util.algorithm.SortUtil; >$naTSJq  
4[#6<Ixf  
/** \} Acq;  
* @author treeroot poQdI?ed,  
* @since 2006-2-2 F|?+>c1}  
* @version 1.0 9#&W!f*qO|  
*/ a We Bav}_  
public class BubbleSort implements SortUtil.Sort{ >*= =wlOB  
ihiuSF<NaQ  
/* (non-Javadoc) twtkH~`"Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O5qW*r'  
*/ u-QO>3oY6  
public void sort(int[] data) { 2zKo  
int temp; z_Wm HB  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Yn4)Zhkk  
if(data[j] SortUtil.swap(data,j,j-1); ,<$YVXe/  
} #PslrA. E  
} ]A]Ft!`6z  
} n^AP"1l8?0  
} Xqg.kX  
4W!\4Va  
} XpgV09.EE  
j!x<QNNX  
选择排序: J-tq8   
p:JRQT"A  
package org.rut.util.algorithm.support; J1tzHa6  
R+{^@M&  
import org.rut.util.algorithm.SortUtil; @ )vy'qP d  
,](v?v.[4  
/** Jh$"fr3  
* @author treeroot =! N _^cb  
* @since 2006-2-2 to&N22a$  
* @version 1.0 \5Vp6^  
*/ %6A-OF  
public class SelectionSort implements SortUtil.Sort { X'FEOF  
.]j#y9>&w%  
/* `10X5V@hP  
* (non-Javadoc) E kBae=  
* ]-um\A4f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3w/( /|0  
*/ Gefnk!;;  
public void sort(int[] data) { {_zV5 V  
int temp; [`.3f'")j  
for (int i = 0; i < data.length; i++) { Km)X_}|  
int lowIndex = i; =w ^TcV  
for (int j = data.length - 1; j > i; j--) { [jl2\3*  
if (data[j] < data[lowIndex]) { AanH{  
lowIndex = j; ]{!!7Zz  
} 6z#lN>Y-`  
} u0XP(d H  
SortUtil.swap(data,i,lowIndex); Dac ^*k=D  
} XogvtK*  
} wJ+U[a  
2{t)DUs  
} {)B9Z I{+A  
CKv&Re  
Shell排序: Q[J [=  
_0,"vFdj  
package org.rut.util.algorithm.support; e'1 ^+*bU  
 Y*@|My`  
import org.rut.util.algorithm.SortUtil; !8xKf*y  
})20Zld}a  
/**  3L%WVCB  
* @author treeroot iV?` i  
* @since 2006-2-2 J`w]}GlH  
* @version 1.0 T3PX gL)o  
*/ #)GW}U]X  
public class ShellSort implements SortUtil.Sort{ WP0 #i~3*  
la'e[t7  
/* (non-Javadoc) ku{XW8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cz2,",+~  
*/ \O kc5;kB2  
public void sort(int[] data) { .zvlRt.zl  
for(int i=data.length/2;i>2;i/=2){ &/s~? Iq  
for(int j=0;j insertSort(data,j,i); \ V6   
} Dd| "iA  
} +0]'| tF>  
insertSort(data,0,1); nQ5N=l  
} 7p)N_cJD  
aZ`<PdA  
/** 8 +"10q-  
* @param data /61by$E  
* @param j LGIalf*7  
* @param i "hWJ3pi{o{  
*/ 0Tcz[$?  
private void insertSort(int[] data, int start, int inc) { RcgRaQ2^  
int temp; !\CG,Ek  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); CN7 k?JO<  
} Q0pzW:=s]  
} #G3` p!"  
} kg<P t >  
6m9 7_NRO  
} #2\8?UPd  
H(G!t`K  
快速排序: QhsMd- v  
tXt:HVN  
package org.rut.util.algorithm.support; s=MT,  
-b cG[W3  
import org.rut.util.algorithm.SortUtil; \a"i7Caa  
oEJaH  
/**  ]nUR;8  
* @author treeroot cTM$ZNin  
* @since 2006-2-2 7_DG 5nT  
* @version 1.0 &vCeLh:s  
*/ ]/Vh{d|I&  
public class QuickSort implements SortUtil.Sort{ )s7bJjT0=X  
 kI%peb?  
/* (non-Javadoc) aD2*.ln><  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tM)Iir*U#  
*/ & g:%*>7P  
public void sort(int[] data) { 7i8eg*Gl  
quickSort(data,0,data.length-1); *C\(wL  
} e^ QVn\<c  
private void quickSort(int[] data,int i,int j){ u?F (1iN =  
int pivotIndex=(i+j)/2; =p]mX )I_  
file://swap )!e3.C|V1W  
SortUtil.swap(data,pivotIndex,j); Y]N~vD  
}|Uj"e  
int k=partition(data,i-1,j,data[j]); t05_Px!mW  
SortUtil.swap(data,k,j); Z==!C=SBv  
if((k-i)>1) quickSort(data,i,k-1); GM](=|F  
if((j-k)>1) quickSort(data,k+1,j); M#xQW`-`  
 1Ao6y.S  
} jyi FM5&  
/** )GVBE%!WEd  
* @param data u FZ~  
* @param i 4qt+uNe!  
* @param j IZ*}idlkn/  
* @return 'w(y J  
*/ ;K_}A4K  
private int partition(int[] data, int l, int r,int pivot) { JWWYVl VC  
do{ f])M04<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NPm;  
SortUtil.swap(data,l,r); 9JPEj-3`g  
} T"?Y5t`(  
while(l SortUtil.swap(data,l,r); jv =EheD  
return l; !EOQhh  
} .s2$al  
G}VDEC  
} o@9+mM"B)  
g:_hj_1Y M  
改进后的快速排序: ;1 |x  
~^&R#4J  
package org.rut.util.algorithm.support; II;Te7~  
TnNWO+ kg  
import org.rut.util.algorithm.SortUtil; HY;9?KJ'  
.k@^KY  
/** gfde#T)S  
* @author treeroot ?`"n3!>bS  
* @since 2006-2-2 '.(~  
* @version 1.0 H<`\bej,  
*/ WuM C^  
public class ImprovedQuickSort implements SortUtil.Sort { p&^J=_O  
i@5 )` <?  
private static int MAX_STACK_SIZE=4096; ^gOww6$<  
private static int THRESHOLD=10; Z~p!C/B  
/* (non-Javadoc) y<uAp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X&a:g  
*/ q$gz_nVq,b  
public void sort(int[] data) { E ] B7  
int[] stack=new int[MAX_STACK_SIZE]; D`pQ7  
N}b^fTq  
int top=-1; :"QfF@Z{  
int pivot; NQX>Qh 2  
int pivotIndex,l,r; ?[)yGRzO2  
Kb&V!#o)  
stack[++top]=0; v vq/  
stack[++top]=data.length-1; p|3b/plZ  
*%!M4&  
while(top>0){  l{$[}<  
int j=stack[top--]; GqLq  gns  
int i=stack[top--]; {6*#3m Kk  
+ZA)/  
pivotIndex=(i+j)/2; Nu^p  
pivot=data[pivotIndex]; 83 I-X95  
pJBg?D  
SortUtil.swap(data,pivotIndex,j); Nxk(mec"  
$6h*l T<  
file://partition J;}3t!  
l=i-1; ?Ik4  
r=j; ~y /!fnv  
do{ A]o4Mf0>I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Bz /@c)  
SortUtil.swap(data,l,r); 1%~[rnQ  
} sw;|'N$:<  
while(l SortUtil.swap(data,l,r); 0[xpEiDx  
SortUtil.swap(data,l,j); oC*=JJe,  
gL3iw!7  
if((l-i)>THRESHOLD){ BT,b-= ;J-  
stack[++top]=i; \X|sU:g  
stack[++top]=l-1; yNCEz/4  
} Eectxyr?;N  
if((j-l)>THRESHOLD){ vXv;1T  
stack[++top]=l+1; [AS}RV  
stack[++top]=j; dJ ~Zr)>  
} ~ #PLAP3-  
kn"q:aD  
} !'G~k+  
file://new InsertSort().sort(data); "Sridh?  
insertSort(data); bT )]'(Xy  
} ~"K ,7sw!Y  
/** 5~H#(d<oZ  
* @param data ZmEEj-*7s  
*/ S6xgiem  
private void insertSort(int[] data) { 7 oQ[FdRn*  
int temp; mi,&0xDe a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9\JQ7$B  
} SA;#aj}rV  
} Y?K{(szo ?  
} d2N:^vvvR  
}TB(7bbd;  
} n,$z>  
!H@0MQ7  
归并排序: g}x(hF  
2% B'3>a  
package org.rut.util.algorithm.support; -WJ?:?'  
F$V/K&&W  
import org.rut.util.algorithm.SortUtil; !do?~$Og  
+B}0=Ex$t  
/** #%lo;W~IY  
* @author treeroot YA:nOvd@O  
* @since 2006-2-2 !bnyJA  
* @version 1.0 r;&>iX4B  
*/ U_B(( Z(g  
public class MergeSort implements SortUtil.Sort{ Yg9joNBh  
@FO) 0  
/* (non-Javadoc) wkUlrL/~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LR(-<"  
*/ 4_/?:$KO  
public void sort(int[] data) { #V,R >0"  
int[] temp=new int[data.length]; K/=|8+IDL  
mergeSort(data,temp,0,data.length-1); "Gb1K9A im  
} r^Zg-|gr  
Ztr Cv?  
private void mergeSort(int[] data,int[] temp,int l,int r){ _hu")os  
int mid=(l+r)/2; TZR)C P5  
if(l==r) return ; %McE` 155  
mergeSort(data,temp,l,mid); eWJ`$"z  
mergeSort(data,temp,mid+1,r); r!PpUwod  
for(int i=l;i<=r;i++){ ^T::-pN*  
temp=data; aj^wRzJ}zA  
} S! v(+|  
int i1=l; <{5EdX  
int i2=mid+1; _Q[$CcDEE  
for(int cur=l;cur<=r;cur++){ QX4ai3v  
if(i1==mid+1) 42J {aJVH  
data[cur]=temp[i2++]; $D'- k]E[H  
else if(i2>r) (QoI<j""  
data[cur]=temp[i1++]; ZyrI R  
else if(temp[i1] data[cur]=temp[i1++]; (xHf4[[u  
else 9H-|FNz?c  
data[cur]=temp[i2++]; %a+mk E  
} G+UMBn  
} \R36w^c3  
?L&'- e@  
} .Z:zZ_Ev  
^T"vX  
改进后的归并排序: VX LT^iX  
d?`ny#,GB  
package org.rut.util.algorithm.support; eq(am%3~  
0j"8@<  
import org.rut.util.algorithm.SortUtil; }X*Riu7gk  
li~d?>  
/** I M-L'9  
* @author treeroot d)4 m6  
* @since 2006-2-2 ydRC1~f0  
* @version 1.0 nD5 gP  
*/ ?=m?jNa;nC  
public class ImprovedMergeSort implements SortUtil.Sort { tg]x0#@s  
26&'X+n&  
private static final int THRESHOLD = 10; l&iq5}[n&  
s7Ub@  
/* 6f')6X'x  
* (non-Javadoc) "j;4 k.`h  
* )M6w5g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q8!) !r%  
*/ S4=~`$eP  
public void sort(int[] data) { )OiT{-m  
int[] temp=new int[data.length]; 'Vyt4^$%  
mergeSort(data,temp,0,data.length-1); o(DOQGl  
} h 3]wL.V  
qlL`jWJ  
private void mergeSort(int[] data, int[] temp, int l, int r) { s l]_M  
int i, j, k; ]E\n9X-{  
int mid = (l + r) / 2; ;;L[e]Z  
if (l == r) T!Hb{Cg*  
return; Og,$ sH}`  
if ((mid - l) >= THRESHOLD) 3|.um_  
mergeSort(data, temp, l, mid); +qh[N@F  
else Ecd;<$tk  
insertSort(data, l, mid - l + 1); ?c[*:N(  
if ((r - mid) > THRESHOLD) o.0ci+z@  
mergeSort(data, temp, mid + 1, r); WI?oSE w  
else G:~k.1y[  
insertSort(data, mid + 1, r - mid); nqInb:  
v?KC%  
for (i = l; i <= mid; i++) { M$Zcn#A  
temp = data; D6>HN[D"  
} Vx~,Uex0+  
for (j = 1; j <= r - mid; j++) { b0lq\9  
temp[r - j + 1] = data[j + mid]; $2W%2rZ  
} (p2K36,9m  
int a = temp[l]; UK<Nj<-'t  
int b = temp[r]; zIh ['^3.n  
for (i = l, j = r, k = l; k <= r; k++) { N5a*7EJv+  
if (a < b) { bbrXgQ`s+w  
data[k] = temp[i++]; c-B cA  
a = temp; vI>>\ .ED  
} else { .zi_[  
data[k] = temp[j--];  o4|M0  
b = temp[j]; !o:f$6EA~C  
} SQX:7YF~  
} RhncBKm*M  
} Ney/[3 A  
8C*c{(4  
/** SHe49!RA'{  
* @param data ^s|6vd;PD=  
* @param l Pi]19boM.  
* @param i xai*CY@cQ  
*/ _f$^%?^  
private void insertSort(int[] data, int start, int len) { YB-h.1T-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); d3D] k,  
} z6*X%6,8  
} r"P|dlV-  
} eA E`# t  
} 7S}_F^  
0*f)=Q'  
堆排序: [ucpd  
'.:z&gSqx0  
package org.rut.util.algorithm.support; `{dm;j5/y  
XD.)Dl8  
import org.rut.util.algorithm.SortUtil; E*]bgD7V  
LDPUD'  
/** Xu%'Z".>:  
* @author treeroot uG,5BV.M  
* @since 2006-2-2 >m$1Xx4#GV  
* @version 1.0 jPUwSIP  
*/ |5lk9<z  
public class HeapSort implements SortUtil.Sort{ be.*#[  
P)P*Xq r#:  
/* (non-Javadoc) s.$3j$vT 8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sS*3=Yh  
*/ E7rDa1  
public void sort(int[] data) { 4 o Fel.o  
MaxHeap h=new MaxHeap(); <0Xf9a8>  
h.init(data); \W~ N  
for(int i=0;i h.remove(); _h{C_;a[_  
System.arraycopy(h.queue,1,data,0,data.length); sB7# ~p A  
} Zy`m!]G]80  
h2G$@8t}I  
private static class MaxHeap{ Q+[n91ey**  
Sc;BCl{=|  
void init(int[] data){ x(1:s|Uyp{  
this.queue=new int[data.length+1]; 8Vr%n2M  
for(int i=0;i queue[++size]=data; AE[b},-[  
fixUp(size); JRB9rSN^  
} l3)} qu  
} oKuI0-*mR  
4h|c<-`>t  
private int size=0; k>;`FFQU>  
HiZ*+T.B  
private int[] queue; G?O1>?4C  
6^]+[q}3  
public int get() { !|^|,"A)  
return queue[1]; T&6l$1J  
} 8A##\j )  
vS;RJg=  
public void remove() { %)1y AdG 8  
SortUtil.swap(queue,1,size--); bCRV\myd`  
fixDown(1); Kp%2k^U  
} G<65H+)M\  
file://fixdown >qnko9V  
private void fixDown(int k) { wW>A_{Y  
int j; d; boIP`M;  
while ((j = k << 1) <= size) { s6 uG`F"  
if (j < size %26amp;%26amp; queue[j] j++; ztcp/1jIvS  
if (queue[k]>queue[j]) file://不用交换 Fs9!S a7v  
break; ?9 <:QE;I>  
SortUtil.swap(queue,j,k); aTH{'mN  
k = j; +$ 'Zf0U  
} &."iFe  
} N G+GEqx  
private void fixUp(int k) { "L IF.)  
while (k > 1) { 9ijfRqI=x  
int j = k >> 1; 3l rT3a3vV  
if (queue[j]>queue[k]) 11 Q1AN  
break; 0CnOL!3.I  
SortUtil.swap(queue,j,k); @0Ic3C[rH6  
k = j; "g5^_UP  
} <? q?Mn  
} *#,7d"6W5  
"H'B*vc-  
} J!dm-L  
D+lAhEN  
} .s?L^Z^  
#NEE7'&S  
SortUtil: L>jY.d2w=K  
]C!gQq2'a  
package org.rut.util.algorithm; u-QB.iQ+s  
ha]VWt%}  
import org.rut.util.algorithm.support.BubbleSort; ]E5o1eeg  
import org.rut.util.algorithm.support.HeapSort; WlOmJtt4)  
import org.rut.util.algorithm.support.ImprovedMergeSort; |3(' N#|  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1+_`^|eK  
import org.rut.util.algorithm.support.InsertSort; )1?y 8_B  
import org.rut.util.algorithm.support.MergeSort; 3Z>Ux3[  
import org.rut.util.algorithm.support.QuickSort; cuax;0{%  
import org.rut.util.algorithm.support.SelectionSort; |mZxfI  
import org.rut.util.algorithm.support.ShellSort; Ytn9B}%o  
KI"#f$2&  
/** Z9v31)q(  
* @author treeroot [_BP)e  
* @since 2006-2-2 d[iQ` YW5  
* @version 1.0 g|o,uD  
*/ /CrSu  
public class SortUtil { uy>q7C  
public final static int INSERT = 1; {&&z-^  
public final static int BUBBLE = 2; ?g_3 [Fk  
public final static int SELECTION = 3; ; 5*&xz  
public final static int SHELL = 4; 7r6.n61F  
public final static int QUICK = 5; j\eI0b @*  
public final static int IMPROVED_QUICK = 6; G<L;4nA)  
public final static int MERGE = 7; yuh *  
public final static int IMPROVED_MERGE = 8; <$D`Z-6  
public final static int HEAP = 9; =*oJEy"  
N=V==Dbu-  
public static void sort(int[] data) { P\E<9*V  
sort(data, IMPROVED_QUICK); ]%;:7?5l  
} 9)l$ aBa  
private static String[] name={ ahusta  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" y6g&Y.:o  
}; cn3#R.G~  
NDN7[7E  
private static Sort[] impl=new Sort[]{ nGC/R&  
new InsertSort(), &h}#HS>l  
new BubbleSort(), \;,_S+Fz8  
new SelectionSort(), _P!m%34|  
new ShellSort(), bL0yuAwF2  
new QuickSort(), xVw9v6@`h  
new ImprovedQuickSort(), 2R[:]-b  
new MergeSort(), aS>u,=C  
new ImprovedMergeSort(), K%t*8 4j  
new HeapSort() Kew@&j~  
}; j`EXlc~  
))qy;Q,  
public static String toString(int algorithm){ x`mG<Yt  
return name[algorithm-1]; oh4E7yN  
} vx{}}/B]J  
})'B<vq  
public static void sort(int[] data, int algorithm) { ,V7nzhA2  
impl[algorithm-1].sort(data); 0 j^Kgx  
} S;Fi?M  
{B~QQMEow  
public static interface Sort { 9=s<Ld  
public void sort(int[] data); ko!)s  
} kXViWOXU^  
W~)}xy  
public static void swap(int[] data, int i, int j) { 21n?=[  
int temp = data; v_yw@  
data = data[j]; t$`r4Lb9/  
data[j] = temp; &j;wCvE4+  
} ez7A4>/  
} Mc)}\{J  
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