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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。 *.RVH<W=8  
插入排序: ]Oy<zU  
-O5m@rwt<  
package org.rut.util.algorithm.support; KkY22_{ac  
eBB D9 SI  
import org.rut.util.algorithm.SortUtil; mm8O  
/** (0+m&, z  
* @author treeroot $W]bw#NH  
* @since 2006-2-2 Oc.>$  
* @version 1.0 H]e 2d|  
*/ \a!<^|C&  
public class InsertSort implements SortUtil.Sort{ {aSq3C<r  
rXPXO=F1/  
/* (non-Javadoc) {>Px.%[<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5*AKl< Jl  
*/ #vSI_rt9I  
public void sort(int[] data) { `9-Zg??8r  
int temp; J$;)TI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <Va>5R_d<  
} ( ~>Q2DS  
} T!PX?  
} gm DC,"Y<  
wu')Q/v  
} 7L*`nU|h  
3fPv71NVtt  
冒泡排序: v,0DGR~  
wLbngO=VG  
package org.rut.util.algorithm.support; i`qh|w/b_  
`2PT 8UM  
import org.rut.util.algorithm.SortUtil; > =H8>X  
7 SZR#L  
/** : +Kesa:E  
* @author treeroot 5*$Zfuf  
* @since 2006-2-2 2e"}5b5  
* @version 1.0 9x!y.gx  
*/ _SqrQ  
public class BubbleSort implements SortUtil.Sort{ vknFtpx  
BE~[%6T7  
/* (non-Javadoc) `vw.~OBl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #F@7>hd1  
*/ M6iKl  
public void sort(int[] data) { OT i3T1&  
int temp; BP$#a #  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vvxj{fxb)  
if(data[j] SortUtil.swap(data,j,j-1); 4(82dmKO  
} }3 }=tN5  
} ([~`{,sv  
} c29Z1Zs2)  
} 1tdCzbEn+  
27:x5g?  
} "=.|QKC1`  
 ZsZ1  
选择排序: :(Bi {cw  
^~l<N@  
package org.rut.util.algorithm.support; $P3nP=mf  
[3Rj?z"S  
import org.rut.util.algorithm.SortUtil; ?sYjFiE  
&v,p_'k  
/** Hea<!zPH  
* @author treeroot hT"K}d;X  
* @since 2006-2-2 E6M: ^p*<  
* @version 1.0 =L%3q<]p  
*/ [<QWTMjR  
public class SelectionSort implements SortUtil.Sort { 5eA]7$ic  
m12 B:f  
/* wjOAgOC  
* (non-Javadoc) G,*s9P]1  
* ISew]R2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7`HUwu  
*/ B:cOcd?p  
public void sort(int[] data) { fx:KH:q3  
int temp; 6l'y  
for (int i = 0; i < data.length; i++) { h>0<@UP  
int lowIndex = i; %<yM=1~>  
for (int j = data.length - 1; j > i; j--) { 3:1 c_   
if (data[j] < data[lowIndex]) { b_ yXM  
lowIndex = j; QaR.8/xV  
} B_glyC  
} oE1]vX  
SortUtil.swap(data,i,lowIndex); PDng!IQ^  
} D5u"4\g< &  
} #Ca's'j&f  
(}1f]$V  
} ^~ $&  
-FV'%X$i  
Shell排序: X>7]g670@  
\*aLyyy3  
package org.rut.util.algorithm.support; <9a_wGs  
:n9~H+!  
import org.rut.util.algorithm.SortUtil; bK9~C" k  
Ws)X5C=A  
/** p]Zabky  
* @author treeroot shIi,!bZ  
* @since 2006-2-2 #%b()I_([  
* @version 1.0 F  t/ x 5  
*/ a <TL&  
public class ShellSort implements SortUtil.Sort{ )Cvzj<Q0  
IQe[ CcM  
/* (non-Javadoc) QYXx7h r=$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L]N2r MM  
*/ 92VX5?Cyg  
public void sort(int[] data) { +|)1_NK  
for(int i=data.length/2;i>2;i/=2){ PRC)GP&q  
for(int j=0;j insertSort(data,j,i); es+_]:7B9  
} B@inH]wq  
} K/v-P <g  
insertSort(data,0,1); Q0Qm0B5eY  
} j%jd@z ]@  
myOX:K*  
/** GD{fXhgk  
* @param data ZM`P~N1?)g  
* @param j a9zph2o-  
* @param i h\*rv5\M  
*/ EZQ+HECpK  
private void insertSort(int[] data, int start, int inc) { ~PW}sN6ppG  
int temp; hRIS [#z;U  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); vx}Z  
} Ej09RO"pB  
} 8:?Q(M7  
} |#:dC #  
I7z/GA\x  
} p6*a1^lU6  
U9.=Ik  
快速排序: /3 Ix,7  
Ny,A#-?  
package org.rut.util.algorithm.support; )-KE4/G  
m_02"'  
import org.rut.util.algorithm.SortUtil; \}QuNwc   
0$Y 9>)O  
/** (L:Fb  
* @author treeroot 0gD59N'C  
* @since 2006-2-2 0k 0c   
* @version 1.0 iz>y u[|  
*/ .L5*E(<K0  
public class QuickSort implements SortUtil.Sort{ y<%.wM]-J  
A2:){`Mw  
/* (non-Javadoc) *a,.E6C*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |4> r"  
*/ 7h9[-d6  
public void sort(int[] data) { R|J>8AL}BY  
quickSort(data,0,data.length-1); [S&O-b8A  
} ro^6:w3O^  
private void quickSort(int[] data,int i,int j){ D4O5@KfL  
int pivotIndex=(i+j)/2; aU<D$I  
file://swap |+xtFe  
SortUtil.swap(data,pivotIndex,j); DT"Zq  
yb{{ z@  
int k=partition(data,i-1,j,data[j]); GHC?Tp   
SortUtil.swap(data,k,j); (<R\  
if((k-i)>1) quickSort(data,i,k-1); |5B,cB_  
if((j-k)>1) quickSort(data,k+1,j); p/WH#4Xdr  
&Dg)"Xji  
} u4,X.3V]A  
/** !QR?\9`  
* @param data a$zm/  
* @param i 1;:t~Y  
* @param j nR@,ouB-$  
* @return gLSG:7m@  
*/ `TD%M`a  
private int partition(int[] data, int l, int r,int pivot) { =#Cf5s6qt  
do{ h3]@M$Y[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fZV8 o$V  
SortUtil.swap(data,l,r); 7|M$W(P  
} U]!.~ji3  
while(l SortUtil.swap(data,l,r); xe gL!  
return l; fJ&<iD)6  
} [zTYiNa  
^o6)[_L  
} H")N_BB  
yg-FJ/  
改进后的快速排序:  @6YBK+"  
Pm#x?1rAj  
package org.rut.util.algorithm.support; (o6[4( G  
tk)>CK11  
import org.rut.util.algorithm.SortUtil; |IX`(  
3aE[F f[  
/** }]g95xT  
* @author treeroot ]Z$TzT&@%  
* @since 2006-2-2 ,hTwNVWI9  
* @version 1.0 '6.>Wdd  
*/ VU`z|nBW@  
public class ImprovedQuickSort implements SortUtil.Sort { mzV"G>,o  
aEEz4,x_  
private static int MAX_STACK_SIZE=4096; uVq5fT`B  
private static int THRESHOLD=10; V3 _b!  
/* (non-Javadoc) b1+hr(kMRM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9oj e`Ay  
*/ )`s;~_ZZ  
public void sort(int[] data) { uH ny ]  
int[] stack=new int[MAX_STACK_SIZE]; Cwsoz  
Ck3QrfM  
int top=-1; =|gJb|?w  
int pivot; 3Zaq#uA  
int pivotIndex,l,r; ])QO%  
jV4hxuc$  
stack[++top]=0; WpJD=C%  
stack[++top]=data.length-1; +Y5(hjE  
R?bn,T>  
while(top>0){ ~X~xE]1o|U  
int j=stack[top--]; iz9\D*or  
int i=stack[top--]; }c35FM,  
Z[})40[M  
pivotIndex=(i+j)/2; T@Ss&eGT2  
pivot=data[pivotIndex]; VA=#0w  
A{4G@k+#d  
SortUtil.swap(data,pivotIndex,j); S_|9j{w)  
~}$\B^z+  
file://partition q?;*g@t  
l=i-1; 4/HY[FT  
r=j; D%;wVnU w  
do{ !c4)pMd  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sP6 ):h  
SortUtil.swap(data,l,r); ![a/kj  
} N#RD:"RS!  
while(l SortUtil.swap(data,l,r); 462!;/ y  
SortUtil.swap(data,l,j); b(|%Gbg@c  
7wiK.99  
if((l-i)>THRESHOLD){ Q\o$**+{  
stack[++top]=i; pYLY;qkG"  
stack[++top]=l-1; YeRcf`  
} }>{ L#JW  
if((j-l)>THRESHOLD){ BN\fv,  
stack[++top]=l+1; W$JY M3!  
stack[++top]=j; u\()E|?p  
} Avs7(-L+s  
[}A_uOGEP  
} W+d 9cM=  
file://new InsertSort().sort(data); C(F1VS  
insertSort(data); 8/Et&TJ`  
} 9Qt)m fqM  
/** u Q:ut(  
* @param data VD9 q5tt7  
*/ q)K-vt)98  
private void insertSort(int[] data) { OH$ F >wO  
int temp; Z7/vrME6  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bK$/,,0=X/  
} ~:/%/-^  
}  ``(}4 a  
} 1-6gB@cvQ  
;f".'9 l^  
} Xzx[C_G  
Exep+x-  
归并排序: NK+FQ^m[  
'^Pq(b~  
package org.rut.util.algorithm.support; (j8GiJ]{L,  
u;+%Qh  
import org.rut.util.algorithm.SortUtil; ?G4iOiyt  
$:f.Krj  
/** Q7CwQi  
* @author treeroot 6-*~ t8  
* @since 2006-2-2 457fT|  
* @version 1.0 ?vZWUWa  
*/ X+`ddX  
public class MergeSort implements SortUtil.Sort{ -@%t"8  
PU^[HC*K  
/* (non-Javadoc) W:VW_3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?-pxte8  
*/ P<>[e9|  
public void sort(int[] data) { Rz.i/w g}  
int[] temp=new int[data.length]; " t5 +*  
mergeSort(data,temp,0,data.length-1); /;(<fh<bY  
} * T JBPM,  
H<V+d^qX\w  
private void mergeSort(int[] data,int[] temp,int l,int r){ DapQ}2'_  
int mid=(l+r)/2; 2-8YSHlh  
if(l==r) return ; .HyjL5r-  
mergeSort(data,temp,l,mid); beJZ pg  
mergeSort(data,temp,mid+1,r); |f"-|6  
for(int i=l;i<=r;i++){ &e%{k@  
temp=data; @ \!KF*v  
} r> Fec  
int i1=l; Xy[}Gp  
int i2=mid+1; Z -pyFK\  
for(int cur=l;cur<=r;cur++){ Qe2m8  
if(i1==mid+1) ! (B_EM  
data[cur]=temp[i2++]; 536^PcJlN  
else if(i2>r) P7}t lHX  
data[cur]=temp[i1++]; lP}od  
else if(temp[i1] data[cur]=temp[i1++]; :0nK`$'  
else pt=7~+r  
data[cur]=temp[i2++]; ^Lsc`<xC  
} ~J%R-{U9  
} a;56k  
C@ FxB[  
} x HY+q ;  
B1y<.1k  
改进后的归并排序: D35m5+=I  
M]J[6EW  
package org.rut.util.algorithm.support; .KFA218h*x  
?O!]8k`1$  
import org.rut.util.algorithm.SortUtil; $TR=3[j  
:L]-'\y  
/** / pO{2[  
* @author treeroot :0B |<~lX  
* @since 2006-2-2 40 A&#u9o  
* @version 1.0 UE"7   
*/ {VBR/M(q  
public class ImprovedMergeSort implements SortUtil.Sort { +*n] tlk  
USE   
private static final int THRESHOLD = 10; ah 4kA LO  
HpW" lYW4  
/* T48BRVX-F  
* (non-Javadoc) 9Kc0&?q@D  
* 1W*V2`0>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h{\t*U 54'  
*/ D`V6&_. p  
public void sort(int[] data) { Po!oN~r  
int[] temp=new int[data.length]; =nLO?qoe  
mergeSort(data,temp,0,data.length-1); \.5F](:  
} .H ,pO#{;  
GNs#oM  
private void mergeSort(int[] data, int[] temp, int l, int r) { dI!8S  
int i, j, k; w"q-#,37j  
int mid = (l + r) / 2; +IvNyj|  
if (l == r) 6@&fvf  
return; n.@#rBKZ  
if ((mid - l) >= THRESHOLD) aZP 2R"  
mergeSort(data, temp, l, mid); kl| g  
else 3 *G5F}7%=  
insertSort(data, l, mid - l + 1); jz|VF,l  
if ((r - mid) > THRESHOLD) Cm^Yl p  
mergeSort(data, temp, mid + 1, r); HB%K|&!+  
else 7@JjjV  
insertSort(data, mid + 1, r - mid); _jW>dU^B  
aXC!t  
for (i = l; i <= mid; i++) { yGRR8F5>(  
temp = data; M/*Bh,M`  
} *K`x;r  
for (j = 1; j <= r - mid; j++) { (m6EQoW^s+  
temp[r - j + 1] = data[j + mid]; ^#2xQ5h  
} 3b e6p  
int a = temp[l]; RZ*<n$#6  
int b = temp[r]; #?_#!T|  
for (i = l, j = r, k = l; k <= r; k++) { nQ|GqU\oA  
if (a < b) { $Tfm/=e  
data[k] = temp[i++]; )W#T2Z>N1  
a = temp; 18jJzYawh  
} else { S,XKW(5   
data[k] = temp[j--]; z23#G>I&  
b = temp[j]; OH>r[,z0  
} l/[pEUYU  
} nkTYWw  
} )u<eO FI+  
C B6A}m  
/** vlvvi()  
* @param data { yTpRQN~  
* @param l ]{<saAmJC  
* @param i :Pc(DfkS  
*/ Vu=] O/ =P  
private void insertSort(int[] data, int start, int len) { P`tyBe#=  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); UAdz-)$  
} |4 Qx=x>  
} p:Oz<P  
} -'j7SOGk  
} eap8*ONl  
(nq^\ZdF  
堆排序: _p0)vT  
f$vwuW  
package org.rut.util.algorithm.support; ?HV}mS[t  
t-x[:i  
import org.rut.util.algorithm.SortUtil; zOL;"/R  
P:qz2Hw  
/** ;>8kPG  
* @author treeroot 7 I@";d8~  
* @since 2006-2-2 rmsQt  
* @version 1.0 Oo1ecbY  
*/ (#If1[L  
public class HeapSort implements SortUtil.Sort{ UoHd-  
oXdel Ju?  
/* (non-Javadoc) =MxpH+spI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j|mv+O  
*/ Z&-tMai;  
public void sort(int[] data) { 1\y@E  
MaxHeap h=new MaxHeap(); Je 31".  
h.init(data); Od-Ax+Hp  
for(int i=0;i h.remove(); W tVf wC_  
System.arraycopy(h.queue,1,data,0,data.length); fgmSgG"b  
} M1EOnq4-  
#~S>K3(  
private static class MaxHeap{ Q,~x#  
68p R:  
void init(int[] data){ F_v-}bbcFQ  
this.queue=new int[data.length+1]; T{tn.sT  
for(int i=0;i queue[++size]=data; *,&S',S-  
fixUp(size); 9n"V\e_R  
} Kr]z]4.d@  
} x}|+sS,g  
I>aGp|4  
private int size=0; +j.qZ8  
.;g}%C  
private int[] queue; Lc%xc`n8B  
e^8BV;+c  
public int get() { y6FKg)  
return queue[1]; )b9_C O}  
} r8,om^N6  
@D]lgq[  
public void remove() { yPN+W8}f  
SortUtil.swap(queue,1,size--); "Vy WT  
fixDown(1); Mb.4J2F?  
} H{%H^t>  
file://fixdown T pD;  
private void fixDown(int k) { *{|$FQnR>(  
int j; $ser+Jt=  
while ((j = k << 1) <= size) { ceG&,a$\  
if (j < size %26amp;%26amp; queue[j] j++; A? r^V2+j  
if (queue[k]>queue[j]) file://不用交换 *gDl~qNRoS  
break; NH4?q!'G  
SortUtil.swap(queue,j,k); SO_>c+Dw  
k = j; qe%V#c  
} #Kl}= 1 4  
} [,b)YjO~Xd  
private void fixUp(int k) { QZ~0o7  
while (k > 1) { ;{gT=,KQ`  
int j = k >> 1; O1'K>teF%  
if (queue[j]>queue[k]) +`Pmq} ey  
break; W-m"@<Z  
SortUtil.swap(queue,j,k); E30Z`$cz:  
k = j; iD714+N(  
} #ouE r-=  
} B`1kGEx .  
?-,6<K1  
} j^nu|  
\c% g M1  
} `[Sl1saZ$S  
$@.jZ_G  
SortUtil: i ?-Y  
F&az":  
package org.rut.util.algorithm; H %z/v|e6  
PJK9704 6  
import org.rut.util.algorithm.support.BubbleSort; ;MPKJS68@  
import org.rut.util.algorithm.support.HeapSort; 9go))&`PJL  
import org.rut.util.algorithm.support.ImprovedMergeSort; T?rH ,$:  
import org.rut.util.algorithm.support.ImprovedQuickSort; > c:Zx!  
import org.rut.util.algorithm.support.InsertSort; #c:kCZt#  
import org.rut.util.algorithm.support.MergeSort; m#n]Wgp'  
import org.rut.util.algorithm.support.QuickSort; 8wmQ4){  
import org.rut.util.algorithm.support.SelectionSort; bLlH//ZRH  
import org.rut.util.algorithm.support.ShellSort; (NaK3_  
"V}qf3 qU  
/** SiTeB)/  
* @author treeroot M1{(OY(G  
* @since 2006-2-2 s[X B#)H4  
* @version 1.0 x.UaQ |F  
*/ #xp(B5  
public class SortUtil { m9t$h  
public final static int INSERT = 1; g "*;nHI D  
public final static int BUBBLE = 2; H=<LutnZ  
public final static int SELECTION = 3; YPEnNt+  
public final static int SHELL = 4; mNDuwDd$S  
public final static int QUICK = 5; hB>^'6h+  
public final static int IMPROVED_QUICK = 6; T 1zi0fa'  
public final static int MERGE = 7; ="(>>C1-  
public final static int IMPROVED_MERGE = 8; MGaiTN^_<  
public final static int HEAP = 9; + zp0" ,2B  
.iT4-  
public static void sort(int[] data) { &S-er{]]  
sort(data, IMPROVED_QUICK); ;4kT?3$l  
} g~)3WfC$[  
private static String[] name={ NwpS)6<-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 1Es qQz*$u  
}; ^l(^z fsZ  
^P$7A]!  
private static Sort[] impl=new Sort[]{ HeozJ^u\?  
new InsertSort(), r?3Aqi"  
new BubbleSort(), Yqj+hC6>,  
new SelectionSort(), B9#;-QO  
new ShellSort(), ,g|2NjUAc  
new QuickSort(), i}lRIXjdV  
new ImprovedQuickSort(), >];"N{ A  
new MergeSort(), S>t>6&A  
new ImprovedMergeSort(), kEP<[K  
new HeapSort() niWx^gKb$  
}; Pm?B 9S  
#>[wD#XJV  
public static String toString(int algorithm){ A3q*$.[  
return name[algorithm-1]; ch })ivFP[  
} >nM%p4E  
-nR\,+N  
public static void sort(int[] data, int algorithm) { 28UVDG1?  
impl[algorithm-1].sort(data); A*i_|]Q  
} sE9Ckc5  
*eGM7o*\X  
public static interface Sort { zP nC=h|g  
public void sort(int[] data); h(N=V|0  
} %5Rq1$D  
GOVAb'  
public static void swap(int[] data, int i, int j) { ti9}*8  
int temp = data; XU9'Rfp  
data = data[j]; &t3Jv{  
data[j] = temp; w2zp#;d  
} fj+O'X  
} <|H ?gfM  
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