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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。 9"aFS=><  
插入排序: cHL]y0>  
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package org.rut.util.algorithm.support; atf%7}2  
WkaR{{nM  
import org.rut.util.algorithm.SortUtil; }6J7 <g  
/** <s8? Z1  
* @author treeroot 5Vi]~dZu7  
* @since 2006-2-2 JblmXqtC  
* @version 1.0 n`)7Y`hBhP  
*/ .H^P2tp  
public class InsertSort implements SortUtil.Sort{ `.'i V[fr  
lV<Tsk'  
/* (non-Javadoc) 20VVOnDY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lq-33#n/  
*/ |:9Ir^  
public void sort(int[] data) { 5}eQaW48  
int temp; ,k~j6Z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); umjhG6  
} y|.fR>5  
} rAx"~l.=  
}  Wu!t C  
s^>lOQ=  
} N\q)LM !M  
iS"8X#[]N  
冒泡排序: uyNJN  
Vd +Q:L  
package org.rut.util.algorithm.support; <'[Ku;m  
S9p?*  
import org.rut.util.algorithm.SortUtil; h `ME(U~<<  
BMNr<P2li  
/** 9&%#nN4`8  
* @author treeroot n}A?jOSAe  
* @since 2006-2-2 xHB/]Vd-  
* @version 1.0 o-~~,n\  
*/ nMG rG  
public class BubbleSort implements SortUtil.Sort{ |rFR8srPG  
-2\ZzK0tM  
/* (non-Javadoc) 5r4gmy>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l RDxIuTK  
*/ (`6%og#8  
public void sort(int[] data) { ALd]1a&  
int temp; ]jc_=I6)  
for(int i=0;i for(int j=data.length-1;j>i;j--){ j u*fyt  
if(data[j] SortUtil.swap(data,j,j-1); A)hhnb0o  
} !7*(!as  
} O4EIE)c  
} a*Ss -y  
} R zS|dGNQE  
bar0{!Y"  
} 5g``30:o  
WRD A `  
选择排序: 2@ 9pr  
>?5xDbRj  
package org.rut.util.algorithm.support; fw' r.  
MBB5wj  
import org.rut.util.algorithm.SortUtil; r219M)D?  
ZBX  
/** '@TI48 J+  
* @author treeroot 9?;@*x  
* @since 2006-2-2 5VR.o!h3I  
* @version 1.0 FaFp_P?  
*/ ~uI**{  
public class SelectionSort implements SortUtil.Sort { {'h_'Y`bOQ  
;1W6"3t-Y  
/* W]]q=c%2  
* (non-Javadoc) g5#CN:%f  
* Gg%tVQu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fcRj  
*/ p jKt:R}  
public void sort(int[] data) { mG)8U{L  
int temp; b~_B [cf  
for (int i = 0; i < data.length; i++) { 4:vTxNs&S  
int lowIndex = i; z)lM2x>|*  
for (int j = data.length - 1; j > i; j--) { pkXv.D`  
if (data[j] < data[lowIndex]) { HU &)  
lowIndex = j; HG2GZ}~^1  
} _Vjpw,  
} <EMkD1e  
SortUtil.swap(data,i,lowIndex); =m}TU)4.  
} ^m*3&x8  
} E4+b-?PB~  
$$JIBf8  
} ll^DY hx}  
XHxz @_rw  
Shell排序: 90~*dNk  
-~ 0] 7Cpl  
package org.rut.util.algorithm.support; ?g2zmI!U  
{odA[H  
import org.rut.util.algorithm.SortUtil; SIq1X'7  
(w+%=z"M  
/** Dg~ [#C-  
* @author treeroot S5N@\ x  
* @since 2006-2-2 3bH~';<  
* @version 1.0  tPA:_  
*/ '61i2\[lZQ  
public class ShellSort implements SortUtil.Sort{ 91u p^   
x;u~NKy  
/* (non-Javadoc) 4O!E|/`wO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F>N+<Z  
*/ t5paY w-b  
public void sort(int[] data) { R"*R99  
for(int i=data.length/2;i>2;i/=2){ 0q{[\51*  
for(int j=0;j insertSort(data,j,i); K;x~&G0=  
} Ik j=`,a2B  
} iZQ\ m0Zc  
insertSort(data,0,1); mDfwn7f  
} #vQ?  
QY@u}&m%o  
/** LM:)j:gS6  
* @param data +Hj/0pp  
* @param j jYWw.g<  
* @param i xO7Yt l  
*/ iK!dr1:wSw  
private void insertSort(int[] data, int start, int inc) { KmQ^?Ad- C  
int temp; LeSHRoD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1Bg_FPu  
} y"vX~LR  
} , /&Z3e  
} @`wn<%o$  
OV[`|<C '  
} > \3ah4"o  
&~#iIk~%  
快速排序: DLi?'K3t  
XJSa]P^B1  
package org.rut.util.algorithm.support; R}r~p?(M  
/b#q*x-b  
import org.rut.util.algorithm.SortUtil; zDDK  
d&jjWlHgEN  
/** BwxnDeG)  
* @author treeroot _A 2Lv]vfV  
* @since 2006-2-2 jWvtv ng  
* @version 1.0 B'}"AC"  
*/ +8AvTSgX%  
public class QuickSort implements SortUtil.Sort{ *Y%Jl o  
n'K6vW3  
/* (non-Javadoc) FLZSK:3B]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J &YQ]l  
*/ 6tn+m54_  
public void sort(int[] data) { :)IV!_>'d  
quickSort(data,0,data.length-1); (a.1M8v+Sg  
} )eYDQA>J  
private void quickSort(int[] data,int i,int j){ SfW}"#L>5  
int pivotIndex=(i+j)/2; L-\ =J  
file://swap Mvb':/M  
SortUtil.swap(data,pivotIndex,j); )KY:m |Z  
/v#)f-N%zs  
int k=partition(data,i-1,j,data[j]); #cU^U#;=r  
SortUtil.swap(data,k,j); AW~"yI<  
if((k-i)>1) quickSort(data,i,k-1); sDC*J \X  
if((j-k)>1) quickSort(data,k+1,j); eA=WGy@IcN  
YEv Lhh  
} k_aW  
/** DM),|Nq"  
* @param data {.CMD9F[  
* @param i Ei5wel6!  
* @param j i#W*'   
* @return 5HKW"=5Cf  
*/ MBw-*K'?zB  
private int partition(int[] data, int l, int r,int pivot) { 5~+XZA#2  
do{ cin2>3Z$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |g-b8+.=]  
SortUtil.swap(data,l,r); e1/sqXWo  
} %8mm Hh  
while(l SortUtil.swap(data,l,r); + E5=$`  
return l; h*w6/ZL1  
} ? \m3~6y  
sJZ!sznn  
} 8TWTbQ  
CQ^3v09N;~  
改进后的快速排序: ^jD1vUL 2:  
v`DI<Lt  
package org.rut.util.algorithm.support; sx 9uV  
A:# k  
import org.rut.util.algorithm.SortUtil; DBsDk kB{  
gfy19c 9  
/** g "hJ{{<  
* @author treeroot vl:J40Kfn  
* @since 2006-2-2 'bu)M1OLi  
* @version 1.0 >t  <pFh  
*/ OP! R[27>  
public class ImprovedQuickSort implements SortUtil.Sort { #E$X ,[ZFo  
}Hcx=}j  
private static int MAX_STACK_SIZE=4096; +(?>-3_z  
private static int THRESHOLD=10; |L::bx(  
/* (non-Javadoc) kV&9`c+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aeP[+I9  
*/ cpZc9;@IC  
public void sort(int[] data) { S%mfs!E>  
int[] stack=new int[MAX_STACK_SIZE]; Ug%_@t/?  
Bv9kSu9'~  
int top=-1; 5[gh|I;D  
int pivot; !EBY@ Y1  
int pivotIndex,l,r; 0Scm? l3  
\9{F5S z  
stack[++top]=0; 6GL=)0Ah  
stack[++top]=data.length-1; T!2=*~A  
jqnCA<G~B-  
while(top>0){ D'_Bz8H!p  
int j=stack[top--]; }< 5F  
int i=stack[top--]; C~4PE>YtTv  
%.HJK  
pivotIndex=(i+j)/2; `BY&>WY[  
pivot=data[pivotIndex]; _\8qwDg"#e  
aP-<4uGx  
SortUtil.swap(data,pivotIndex,j); S* R,FKg  
7 s Fz?` -  
file://partition y$W|~ H   
l=i-1; V@vU"  
r=j; X~9j$3lUBR  
do{ =L-I-e97@  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F<&!b2)ML  
SortUtil.swap(data,l,r); LnsD  
} Ao9R:|9  
while(l SortUtil.swap(data,l,r); DcD{*t?x  
SortUtil.swap(data,l,j); 1Sz A3c  
JXqr3 Np1  
if((l-i)>THRESHOLD){ l$xxrb9P!  
stack[++top]=i; d_z 59  
stack[++top]=l-1; 3=0E!e  
} K^l:MxO-X  
if((j-l)>THRESHOLD){ Ms^dRe)  
stack[++top]=l+1; mpw~hW0-  
stack[++top]=j; ZWUP^V  
} 3gZ8.8q3  
3_$w| ET  
} *OjKc s  
file://new InsertSort().sort(data); An`3Ex[  
insertSort(data); IE2"rQT  
}  .) tSg  
/** XMIbUbU k-  
* @param data ~Bi_7 Q  
*/ U7 @AC}.+  
private void insertSort(int[] data) { YDJ4c;37  
int temp; nIk$7rGLB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XXZaKgsq  
} U(>4s]O6  
} 6IcNZ!j98  
} cre;P5^E  
J3RB]O_  
} <O<LYN+(  
(!L5-8O  
归并排序: `)iY}Iu  
&[Xu!LP  
package org.rut.util.algorithm.support; 4,Ic}CvM  
\nNXxTxX!  
import org.rut.util.algorithm.SortUtil; dihjpI_  
|SZo' 6  
/** tRb] 7 z  
* @author treeroot 21X`h3+=  
* @since 2006-2-2 Dim> 7Wbh  
* @version 1.0 /1UOT\8U  
*/ \Q?ip&R  
public class MergeSort implements SortUtil.Sort{ rqPo)AL  
d*8 $>GA  
/* (non-Javadoc) `r"+644  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JuR"J1MY  
*/ Vv.r8IGYm  
public void sort(int[] data) { 1/+C5Bp*  
int[] temp=new int[data.length]; {$D,?V@%_  
mergeSort(data,temp,0,data.length-1); > et-{(G  
} *iO u'  
enS}A*Io  
private void mergeSort(int[] data,int[] temp,int l,int r){ s8"8y`u  
int mid=(l+r)/2; {P%9  
if(l==r) return ; u7%D6W~m0  
mergeSort(data,temp,l,mid); IY'=DePd  
mergeSort(data,temp,mid+1,r); `>Tu|3%\  
for(int i=l;i<=r;i++){ f"G-  
temp=data; CvSIV7zYo  
} ?Ea;J0V  
int i1=l; jl.p'$Fbn  
int i2=mid+1; f 3V Dv9(  
for(int cur=l;cur<=r;cur++){ gN8hJG'0  
if(i1==mid+1) $,=6[T!z+e  
data[cur]=temp[i2++]; SvM6iZ]  
else if(i2>r) S_ MyoXV  
data[cur]=temp[i1++]; z}QwP~Z  
else if(temp[i1] data[cur]=temp[i1++]; H(c72]@Vg  
else lf{e[!ML'  
data[cur]=temp[i2++]; ~)LH='|h\}  
} E907fX[R~  
} Ix@&$!'k  
9_s6l  
} =' ZRfb&  
)~4II.`%^  
改进后的归并排序: Mv 544>:  
EC2+`HJ"  
package org.rut.util.algorithm.support; EKEjv|_)  
$EZN1\  
import org.rut.util.algorithm.SortUtil; _ nA p6i  
$n^ MD_1!  
/** @bM2{Rh:  
* @author treeroot =!O*/6rz  
* @since 2006-2-2 sIG7S"k>p  
* @version 1.0 Y?CCD4"qn  
*/ 6=4wp?  
public class ImprovedMergeSort implements SortUtil.Sort { El_wdbbT  
nkxzk$  
private static final int THRESHOLD = 10; Hgeg@RP Q  
ORGD  
/* >z;[2 n'  
* (non-Javadoc) AqK z$  
* fx=Awba  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,g-EW jN  
*/ rk+#GO{  
public void sort(int[] data) { WV3|?,y]qm  
int[] temp=new int[data.length]; KoE8 Mp  
mergeSort(data,temp,0,data.length-1); T{V/+RM  
} 8`4<R6]LKB  
{,*"3O:\:  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2" |2a@  
int i, j, k; p.ANVA@:  
int mid = (l + r) / 2; !CX t*/~  
if (l == r) ] 2 #  
return; bfB\h*XO  
if ((mid - l) >= THRESHOLD) '1,,)U#6E  
mergeSort(data, temp, l, mid); EXP%Mk/  
else U4m9e|/H;z  
insertSort(data, l, mid - l + 1); s]mo$ _na  
if ((r - mid) > THRESHOLD) LmlXMia  
mergeSort(data, temp, mid + 1, r); E$W{8?:{  
else Y2xL>F  
insertSort(data, mid + 1, r - mid); }I 3gU  
G+B~Ix-  
for (i = l; i <= mid; i++) { M02uO`Y9  
temp = data; CTWn2tpW  
} t+5E#!y  
for (j = 1; j <= r - mid; j++) { mj|)nOd  
temp[r - j + 1] = data[j + mid]; mNmLyU=d  
} {x'GJtpb  
int a = temp[l]; V .os  
int b = temp[r]; O: @}lK+H  
for (i = l, j = r, k = l; k <= r; k++) { 6KD `oUx  
if (a < b) { <%xS{!'}  
data[k] = temp[i++]; kb[P\cRa  
a = temp; iA8U Yd3Q  
} else { 0sI1GhVR  
data[k] = temp[j--]; y=In?QN{6*  
b = temp[j]; QO"oEgB`+Z  
} h;=6VgXZ  
} : ^ 8  
} (`SRJ$~f  
USFD y  
/** &1+X\c+t b  
* @param data '9c2Q/  
* @param l jiF?fX@  
* @param i U4 13?Pe  
*/ 'J,T{s1J  
private void insertSort(int[] data, int start, int len) { !61Pl/uQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !LkW zn3  
} PW3GL3+  
} \*,=S52  
} }g$(+1g  
} G^q3Z#P  
gM [w1^lj  
堆排序: m*$|GW9  
]f]<4HD=i  
package org.rut.util.algorithm.support; 8/0Y vh  
*3T| M@Y  
import org.rut.util.algorithm.SortUtil; h"H2z1$  
k}KC/d9.z  
/** YeF1C/'hy  
* @author treeroot 7' S@3   
* @since 2006-2-2 =)hVn  
* @version 1.0 p7:{^  
*/ AfG/JWSo}  
public class HeapSort implements SortUtil.Sort{ F :6SPY y  
=]-j;#'&  
/* (non-Javadoc) 6a;v&5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nFe%vu8a  
*/ Rb(SBa  
public void sort(int[] data) { >J|]moSVA  
MaxHeap h=new MaxHeap(); a_h]?5 :c  
h.init(data); C> [ Uvc  
for(int i=0;i h.remove(); $T :un.TM  
System.arraycopy(h.queue,1,data,0,data.length); g;ZxvR)ZJk  
} ICAH G7,  
Me6+~"am/  
private static class MaxHeap{ lN9=TxH1(;  
XQ4G)  
void init(int[] data){ "B_K XL  
this.queue=new int[data.length+1]; w '3#&k+  
for(int i=0;i queue[++size]=data; ~4?9a(>3  
fixUp(size); xQw7 :18wQ  
} G;f/Tch  
} F@R1:M9*  
gocrjjAHk  
private int size=0; tK k#LWB  
?BhMjsy.  
private int[] queue; 4(-b x.V  
1 { , F  
public int get() { J[^}u_z  
return queue[1]; "_2Ng<2  
}  :ujCr.  
TNQP" 9[?  
public void remove() { s}pIk.4ot!  
SortUtil.swap(queue,1,size--); }8;[O 9  
fixDown(1); V'w@rc\XN  
} w&xDOyW]  
file://fixdown O$IjN x  
private void fixDown(int k) { m^x6>9,  
int j; au,t%8AC  
while ((j = k << 1) <= size) { ^<X@s1^#  
if (j < size %26amp;%26amp; queue[j] j++; g#]wLm#  
if (queue[k]>queue[j]) file://不用交换 @y31NH(  
break; waKT{5k  
SortUtil.swap(queue,j,k); $ "Bh]-  
k = j; pHoEa7:  
} Bo5ZZY  
} 8( b tZt  
private void fixUp(int k) { z"*/mP2  
while (k > 1) { 7z~_/mAI  
int j = k >> 1; -R{V-   
if (queue[j]>queue[k]) b=3H  
break; i|1^+;  
SortUtil.swap(queue,j,k); qYhs|tY)  
k = j; oA1a/[#  
} w1;hy"zPsj  
} )G7=G+e;  
:W@#) 1=  
} Kt0(gQOr0  
?'"X"@r5  
} 9;xM%  
TNJG#8n%Y  
SortUtil: MQKfJru7  
.5!t:FPOv  
package org.rut.util.algorithm; gl).cIpw  
eSW{Cb  
import org.rut.util.algorithm.support.BubbleSort; $`Ix:gi  
import org.rut.util.algorithm.support.HeapSort; U?.9D  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^fz+41lE\  
import org.rut.util.algorithm.support.ImprovedQuickSort; L],f3<  
import org.rut.util.algorithm.support.InsertSort; wW>)(&!F  
import org.rut.util.algorithm.support.MergeSort; w\}?(uO  
import org.rut.util.algorithm.support.QuickSort; >[6{LAe~hp  
import org.rut.util.algorithm.support.SelectionSort; ?bw4~  
import org.rut.util.algorithm.support.ShellSort; K R"M/#  
~H6r.:]  
/** _4cvX  
* @author treeroot wb Iq&>p  
* @since 2006-2-2 kF>o.uSV  
* @version 1.0 {)AMwq  
*/ 4~U'TE @  
public class SortUtil { jmg!Ml  
public final static int INSERT = 1; pKS {6P  
public final static int BUBBLE = 2; {-BRt)L[  
public final static int SELECTION = 3; f3|@|' ;  
public final static int SHELL = 4; FYS/##r  
public final static int QUICK = 5; upvS|KUil  
public final static int IMPROVED_QUICK = 6; -R>}u'EG>  
public final static int MERGE = 7;  X\}Y  
public final static int IMPROVED_MERGE = 8; Bvt@X   
public final static int HEAP = 9; ;60.l!   
R/`q/0T.  
public static void sort(int[] data) { }K hjlPhx  
sort(data, IMPROVED_QUICK); 7H>@iI"?  
} n[YEOkiG  
private static String[] name={ yz2Ci0Dwy  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :iR \%  
}; !gnj]k&/c  
o->\vlbD  
private static Sort[] impl=new Sort[]{ $Ci0I+5w  
new InsertSort(), !`bio cA  
new BubbleSort(), ,7XtH>2s  
new SelectionSort(), SR*wvQnOx  
new ShellSort(), ?|e'Gbb_  
new QuickSort(), (Z5##dS3  
new ImprovedQuickSort(), @E.k/G!~Nb  
new MergeSort(), 1 y}2+Kk  
new ImprovedMergeSort(), ! Q<>3 xZ  
new HeapSort() lcV<MDS  
}; ET];%~ ^  
&uUo3qXQ5l  
public static String toString(int algorithm){ >yJ9U,Y  
return name[algorithm-1]; dz>;<&2Z  
} *Ei|fe$sa  
NA,C Z  
public static void sort(int[] data, int algorithm) { c#N<"cy>  
impl[algorithm-1].sort(data); _lW+>xQ  
} [7m1Q<  
ny-7P;->8  
public static interface Sort { I]!^;))  
public void sort(int[] data); ob_I]~^I?|  
} fIF<g@s  
r}yG0c,  
public static void swap(int[] data, int i, int j) { %r)avI  
int temp = data; F_uY{bg  
data = data[j]; ;IK[Y{W/  
data[j] = temp; Jx#k,Z4  
} v+"rZ  
} '&;yT[  
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