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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。 fOJj(0=y  
插入排序: Vs|sw  
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package org.rut.util.algorithm.support; W60Q3  
cb4b, Ri  
import org.rut.util.algorithm.SortUtil; 1{7_ `[  
/** =<>pKQ)[  
* @author treeroot j aD!  
* @since 2006-2-2 s79 q 5  
* @version 1.0 @[0jFjK  
*/ Y8t Nwh  
public class InsertSort implements SortUtil.Sort{ QglYU  
?d#Lr*m  
/* (non-Javadoc) !4L#$VG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XX:q|?6_ 4  
*/ V-:`+&S{^  
public void sort(int[] data) { 9kUV1?  
int temp; 6s&qZ+v-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); { $X X  
} Jtpa@!M  
} &EGY+p|2Y  
} n)Hk8)^8  
RAdvIIQp:  
} GA7u5D"0  
^xmZ|f-  
冒泡排序: at=D&oy4"+  
?U$}Rsk{#  
package org.rut.util.algorithm.support; Xv8fPP(  
uH0#rgKt  
import org.rut.util.algorithm.SortUtil; i@Vs4E[b  
U* 4{"  
/** G u6[{u  
* @author treeroot >]^>gUmq  
* @since 2006-2-2 ujow?$&  
* @version 1.0 9ec0^T  
*/ E+:.IuXW$  
public class BubbleSort implements SortUtil.Sort{ 17|@f  
R&#[6 r(h  
/* (non-Javadoc) df!+T0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FSFFk~  
*/ N JXa_&_  
public void sort(int[] data) { 6/VNuQ_#  
int temp; rXlx?GV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ xa' nJ"f;  
if(data[j] SortUtil.swap(data,j,j-1); 9y;y7i{>?  
} xp~YIeSg  
} #i@ACAgn;6  
} otoBb^Mz  
} Q;=6ag'  
#`r(zI[  
} )K8P+zn~  
dEL3?-;'  
选择排序: }FHw" {my  
F ZM2   
package org.rut.util.algorithm.support; C+T&O  
qjJ{+Rz2  
import org.rut.util.algorithm.SortUtil; $+0=GN  
`D4oAx d9  
/** `!]R!T@C  
* @author treeroot 4n#YDZ  
* @since 2006-2-2 >7"$}5d  
* @version 1.0 "^Y6ctw  
*/ }7-7t{G  
public class SelectionSort implements SortUtil.Sort { 7&=-a|k~  
p| Vmdnb  
/* ;HR 6X  
* (non-Javadoc) `8mD7xsg$  
* RfD{g"]y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4 0p3Rv  
*/ r[6#G2  
public void sort(int[] data) { U.HoFf+HN  
int temp; z7| s%&  
for (int i = 0; i < data.length; i++) { |*Of^IkG0  
int lowIndex = i; mJSK; @w<O  
for (int j = data.length - 1; j > i; j--) { @Q/x&BV  
if (data[j] < data[lowIndex]) { ?e"Wu+q~L  
lowIndex = j; \I'f3  
} +SAk:3.#CV  
} ^).WW  
SortUtil.swap(data,i,lowIndex); (s5<  
} >6*(}L9  
} KuIBYaK, g  
<j{0!J@:  
} pk;ffq@  
lb-S0plw  
Shell排序: \8=e |a5`  
y;zt_O/  
package org.rut.util.algorithm.support; -J-3_9I  
}DJ|9D^yf  
import org.rut.util.algorithm.SortUtil; 0m]~J_   
hTlnw[I  
/** %~][?Y ><  
* @author treeroot 3Gc ,I:\  
* @since 2006-2-2 [q|?f?Zl  
* @version 1.0 :D<:N*9i  
*/ 6F@zCv"w  
public class ShellSort implements SortUtil.Sort{ YtV |e|aD  
i,mrMi c#  
/* (non-Javadoc) #;5[('&[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IOSuaLH^  
*/ k&MlQ2'!<  
public void sort(int[] data) { ?BWHr(J  
for(int i=data.length/2;i>2;i/=2){ M(_^'3u  
for(int j=0;j insertSort(data,j,i); BM|-GErE  
} %'RI 3gy  
} FE0qw1{qQ  
insertSort(data,0,1); HiQoRk  
} l*F!~J3  
HXD*zv@ *6  
/** #citwMW  
* @param data l,imT$u  
* @param j #]5&mKi  
* @param i 9 Q0#We*  
*/ _F}IF9{?G  
private void insertSort(int[] data, int start, int inc) { _#/!s]$d#  
int temp; [ c ~LY4:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); H.jLGe>  
} :5TXA  
} 0C lX  
} uAW*5 `[  
u5u0*c  
} B, QC -Tn  
A8_\2'b  
快速排序: kS@9c _3S  
tqff84  
package org.rut.util.algorithm.support; `f\5p+!<7R  
=XZF.ur  
import org.rut.util.algorithm.SortUtil; 7yMieUF  
g i1}5DR  
/** o8~f   
* @author treeroot I ybl;u  
* @since 2006-2-2 &*jxI[  
* @version 1.0 [_g#x(=  
*/ 1TK #eU  
public class QuickSort implements SortUtil.Sort{ ,Hik(22  
IeR l6r%:  
/* (non-Javadoc) ""25ay  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E[SV*1)  
*/ O vyB<r  
public void sort(int[] data) { GCf._8;%  
quickSort(data,0,data.length-1); 4 +da  
} t-v^-#  
private void quickSort(int[] data,int i,int j){ 9s;!iDFn  
int pivotIndex=(i+j)/2; OhSt6&+  
file://swap |%M{k A-  
SortUtil.swap(data,pivotIndex,j); ^yn[QWFO  
'0'"k2"vC  
int k=partition(data,i-1,j,data[j]); \j,v/C@c-  
SortUtil.swap(data,k,j); 0Zc*YdH  
if((k-i)>1) quickSort(data,i,k-1); v`z=OHc  
if((j-k)>1) quickSort(data,k+1,j); z4%Z6Y  
1A|x$j6m  
} afxj[;p!  
/** k#8S`W8^  
* @param data j6&zRFX  
* @param i G/LXUhuif  
* @param j M^|"be~{'  
* @return Q9Y9{T  
*/ TS\A`{^T  
private int partition(int[] data, int l, int r,int pivot) { *3w/`R<\  
do{ z/eU^2V  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Z-? Iip{  
SortUtil.swap(data,l,r); pO-s@"j]  
} eHF(,JI  
while(l SortUtil.swap(data,l,r); ~>Hnf_pZO  
return l; C }h<ldlY  
} # `N6<nb  
[[*0MA2Y  
} buq *abON  
dVj'  
改进后的快速排序: ;JPbBwm  
Vz7w{HY  
package org.rut.util.algorithm.support; =`7#^7Q9  
g6[/F-3Qlf  
import org.rut.util.algorithm.SortUtil; 9a"Y,1  
0I(GB;E  
/** oP|pOs\$p  
* @author treeroot aIn)']  
* @since 2006-2-2 D]G'R5H  
* @version 1.0 DWm;&RPJ  
*/ Pv{,aV\I}  
public class ImprovedQuickSort implements SortUtil.Sort { '?vgp  
T>%uRK$  
private static int MAX_STACK_SIZE=4096; 0%A(dJA6  
private static int THRESHOLD=10; ;EE&~&*w  
/* (non-Javadoc) wB1|r{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U&Sbm~Qi  
*/ ^B&ahk  
public void sort(int[] data) { ^ RcIE (  
int[] stack=new int[MAX_STACK_SIZE]; ery?G-  
ZZ]OR;8  
int top=-1; >'2w\Uk~:  
int pivot; UgnsV*e&  
int pivotIndex,l,r; W[1f]w3  
PtPGi^  
stack[++top]=0; (N~zJ .o  
stack[++top]=data.length-1; 8Y{}p[UFT  
0bnVIG2q  
while(top>0){ G+ $)W u  
int j=stack[top--]; zP{<0o  
int i=stack[top--]; $8X tI  
Dvq*XI5  
pivotIndex=(i+j)/2; %/6e"o  
pivot=data[pivotIndex]; _ RT"1"r  
JucxhjV#,  
SortUtil.swap(data,pivotIndex,j); i)ES;b4  
HYI1 o/}  
file://partition bzj!d|T`  
l=i-1; +>i<sk  
r=j; )bIK0h  
do{ #v~S",*.f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z`xz~9a<  
SortUtil.swap(data,l,r); "j.oR}s9?#  
} XTi0,e]5{u  
while(l SortUtil.swap(data,l,r); $3]E8t  
SortUtil.swap(data,l,j); (4{@oM#H6  
oQ-|\?{;A  
if((l-i)>THRESHOLD){ sjkKaid  
stack[++top]=i; 02# b:  
stack[++top]=l-1; RBK>Lws6  
} 3"^)bGe  
if((j-l)>THRESHOLD){ jy__Y=1}  
stack[++top]=l+1; @E"+qPp.3  
stack[++top]=j; ;@7 #w  
} cO=UswIkwO  
=-Q  
} %)6 :eIS  
file://new InsertSort().sort(data); v_@#hf3  
insertSort(data); 3R:7bex  
} QqFfR#  
/** Q,,fDBN  
* @param data ko+M,kjwR  
*/ a`@<ZsR  
private void insertSort(int[] data) { Lm*LJ_+ B  
int temp; 53u.p c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kq1M <lk  
} tEWj}rX   
} N5w]2xz!  
} )q]j?Z.  
(g )lv)4P  
} G|PIH#  
R0YC:rAt  
归并排序: Dho^^<`c+  
P B6/<n9#  
package org.rut.util.algorithm.support; c@o/Cv  
/P8eI3R  
import org.rut.util.algorithm.SortUtil; EhP&L?EL  
Bn#HJ17/#  
/** ]N(zom_0d  
* @author treeroot r/q1&*T  
* @since 2006-2-2 T`'3Cp$q  
* @version 1.0 YZ%f7BUk  
*/ *l?% o{  
public class MergeSort implements SortUtil.Sort{ _"w!KNX>(~  
I|3v&E 1  
/* (non-Javadoc) T\e)Czz2-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s<r.+zqW  
*/ _KkVI7a  
public void sort(int[] data) { x4m_(CtK  
int[] temp=new int[data.length]; |_xiG~  
mergeSort(data,temp,0,data.length-1); "w|k\1D  
} Ppb2"Ik  
seD+~Y\z  
private void mergeSort(int[] data,int[] temp,int l,int r){ xX4^nem\G  
int mid=(l+r)/2; z`r4edk3  
if(l==r) return ; *}iT6OJ  
mergeSort(data,temp,l,mid); %C E@}  
mergeSort(data,temp,mid+1,r); o2e h)rtB  
for(int i=l;i<=r;i++){ aXK%m  
temp=data; EPd.atA  
} r+#V{oE_  
int i1=l; {}_Oo%IVGK  
int i2=mid+1; Y`O}]*{>8R  
for(int cur=l;cur<=r;cur++){ Y)j,(9  
if(i1==mid+1) k}0  
data[cur]=temp[i2++]; ={i&F  
else if(i2>r) +$mskj0s  
data[cur]=temp[i1++]; ]MA)=' ~  
else if(temp[i1] data[cur]=temp[i1++]; bQN4ozSi  
else by y1MgQd  
data[cur]=temp[i2++]; O"-PNF,J  
} _467~5JkU  
} &\]f!'jV  
\=G Xe.}4d  
} z Q|x>3   
U/&qV"Ih  
改进后的归并排序: B oj{+rE0  
owY_cDzrH  
package org.rut.util.algorithm.support; cSs/XJZ  
0!'M#'m  
import org.rut.util.algorithm.SortUtil; 7/OOq=z  
o(SJuZC/U  
/** Z-p^3t'{  
* @author treeroot &lfF!   
* @since 2006-2-2 Pymh^i  
* @version 1.0 k#r7&Y  
*/ Y)5uK:)^  
public class ImprovedMergeSort implements SortUtil.Sort { rnBeL _8C  
3^-)gK  
private static final int THRESHOLD = 10; /G{3p&9  
{)[g  
/* Umwg iw  
* (non-Javadoc) vls> 6h  
* [c!vsh]^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2u;fT{(  
*/ YIk6:W{  
public void sort(int[] data) { jeBj   
int[] temp=new int[data.length]; @k #y-/~?  
mergeSort(data,temp,0,data.length-1); CY).I`aJ  
} r`g;k&"a  
_C8LK.M#j  
private void mergeSort(int[] data, int[] temp, int l, int r) { +bd{W]={  
int i, j, k; {}C7VS1  
int mid = (l + r) / 2; -Jrc'e4K  
if (l == r) yrYaKh  
return; ,v5>sL  
if ((mid - l) >= THRESHOLD) &+{xR79+&  
mergeSort(data, temp, l, mid); 0|Ft0y`+  
else !9cPNIi  
insertSort(data, l, mid - l + 1); +~{nU'  
if ((r - mid) > THRESHOLD) n *0F  
mergeSort(data, temp, mid + 1, r); o%>nu  
else nMoF;AdKm  
insertSort(data, mid + 1, r - mid); Oc+L^}elJ  
4_:e+ ql  
for (i = l; i <= mid; i++) { td$6:)  
temp = data; Cv7RCjMw  
} ~HI0<;r=eL  
for (j = 1; j <= r - mid; j++) { 3K:Xxkk  
temp[r - j + 1] = data[j + mid]; XBt0Ez  
} 5h^qtK  
int a = temp[l]; (9_e >2_  
int b = temp[r]; $`{q =  
for (i = l, j = r, k = l; k <= r; k++) { ] "vdC}  
if (a < b) { ]Oh>ECA|D  
data[k] = temp[i++]; CrX-?$  
a = temp; ?iO^b.'I#  
} else { 7IW7'klkvD  
data[k] = temp[j--]; \mit&EUh}  
b = temp[j]; A_ z:^9  
} %a^!~qV  
} P3FpU<OBwp  
} ] r+I D  
2xBGs9_Y  
/** JJOs L!@  
* @param data 2-2LmxLG  
* @param l ^n5QK HD  
* @param i vjWgR9 4/{  
*/ / ^M3-5@Q  
private void insertSort(int[] data, int start, int len) { XxQ2g&USk  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .shI% 'V  
} Ds5&5&af  
} ^o<Nz8  
} 8(K~QvE~  
} ]@]"bF!Dn  
t$D[,$G9  
堆排序: Z{)|w=  
2YEn)A@8  
package org.rut.util.algorithm.support; . k DCcnm  
]V\ g$@  
import org.rut.util.algorithm.SortUtil; 52Ffle8  
j*\MUR=  
/** yG_.|%e  
* @author treeroot ?& ^l8gE  
* @since 2006-2-2 IN*Z__l8j`  
* @version 1.0 &1n0(qB  
*/ l%w|f`B:  
public class HeapSort implements SortUtil.Sort{ B|w}z1.  
$jL.TraV7  
/* (non-Javadoc) uty]-k   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L )"w-,zy  
*/ 2a}_|#*  
public void sort(int[] data) { @WUCv7U  
MaxHeap h=new MaxHeap(); Gwk@X/q  
h.init(data); ~t$VzL1  
for(int i=0;i h.remove(); J sdEA  
System.arraycopy(h.queue,1,data,0,data.length); ../(gG9  
} |'(IWU  
h 'CLf]  
private static class MaxHeap{ SK2pOZN  
t/c^hTT  
void init(int[] data){ #Z5~a9rO  
this.queue=new int[data.length+1]; "lMWSCas  
for(int i=0;i queue[++size]=data; #jR?C9&!(  
fixUp(size); 9$t@Gmn  
} wIPDeC4  
} ,peFNpi  
0(.C f.B~  
private int size=0; of<OOh%3  
DvKMb-*S  
private int[] queue; S+ x [1#r  
U_04QwhK7  
public int get() { A]slssE+  
return queue[1]; !"">'}E1  
} 4^A'A.0  
!b Km}1T  
public void remove() { |1$X`|S  
SortUtil.swap(queue,1,size--); B W1O1zIh\  
fixDown(1); iE{SqX  
} 3?<vnpN=5d  
file://fixdown ,s<d"]<  
private void fixDown(int k) { }\*|b@)]  
int j; B!lw>rUMQ  
while ((j = k << 1) <= size) { >m46tfoM  
if (j < size %26amp;%26amp; queue[j] j++; 4cL=f  
if (queue[k]>queue[j]) file://不用交换 JaTW/~ TU  
break; S|i //I%_  
SortUtil.swap(queue,j,k); JD .z}2+  
k = j; kSrzIq<xre  
} @:8|tJu8b  
} 7hQl,v< 5  
private void fixUp(int k) { awtzt?VtLh  
while (k > 1) { 6&cU*Io@  
int j = k >> 1; \^D`Hvg  
if (queue[j]>queue[k]) AUd}) UR  
break; q2Dg~et  
SortUtil.swap(queue,j,k); GH!#"Sl8Z  
k = j; -. G0k*[d  
} Z7/lFS'~N  
} f+RDvgkKU  
?J AzN  
} 9w|q':<  
3H2'HO  
} GQQ6 t  
/vU31_eZt  
SortUtil: A1@a:P=  
C.Yz<?;S  
package org.rut.util.algorithm; 0 $r{h}[^c  
eAEVpC2  
import org.rut.util.algorithm.support.BubbleSort; UbXz`i  
import org.rut.util.algorithm.support.HeapSort; xC]/i(+bA  
import org.rut.util.algorithm.support.ImprovedMergeSort; aeIR}'H|  
import org.rut.util.algorithm.support.ImprovedQuickSort; g>{=R|uO5  
import org.rut.util.algorithm.support.InsertSort; +-i@R%  
import org.rut.util.algorithm.support.MergeSort; s4\2lBU?  
import org.rut.util.algorithm.support.QuickSort; -u(#V#}OV?  
import org.rut.util.algorithm.support.SelectionSort; KA7nncg;,  
import org.rut.util.algorithm.support.ShellSort; yCVBG  
:nn'>  
/** xMu6PM<l  
* @author treeroot -`JY] H  
* @since 2006-2-2 N_U D7P1  
* @version 1.0 Ex{]<6UAu  
*/ `K.yE0^i  
public class SortUtil { o>h>#!e  
public final static int INSERT = 1; m;|I}{r  
public final static int BUBBLE = 2; J=Z"sU=  
public final static int SELECTION = 3; 4ai3@f5  
public final static int SHELL = 4; G9TUU.T  
public final static int QUICK = 5;  K!j2AP3  
public final static int IMPROVED_QUICK = 6; W&nVVV8s@  
public final static int MERGE = 7; a7ty&[\  
public final static int IMPROVED_MERGE = 8; v2^CBKZ+  
public final static int HEAP = 9; g|Cnj  
y[# U/2  
public static void sort(int[] data) { Z~ (QV0}  
sort(data, IMPROVED_QUICK); j&r5oD;  
} ofV{SeD67  
private static String[] name={ /$KW$NH4z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pbNVj~#6  
}; 2P*O^-zRp  
 }#1g;  
private static Sort[] impl=new Sort[]{ i@6 kI C  
new InsertSort(), uQ}kq7gd  
new BubbleSort(), "lm3o(Dk  
new SelectionSort(), -ydT%x  
new ShellSort(), u=5^xpI<D  
new QuickSort(), k 'o?/  
new ImprovedQuickSort(), `Bx CTwc  
new MergeSort(), 4R.#=]F  
new ImprovedMergeSort(), \4 DH&gZ[  
new HeapSort() k K(,FB  
}; e): &pqA  
! d(,t[cV  
public static String toString(int algorithm){ gw-l]@;1  
return name[algorithm-1];  _~r>C  
} "&~Um U4CN  
b@k3y9 &  
public static void sort(int[] data, int algorithm) { wcO_;1_ H  
impl[algorithm-1].sort(data); 6N ^FJCs  
} &7cy9Z~m  
z]pH'c39  
public static interface Sort { MC3{LVNK  
public void sort(int[] data); q QQ~ [JL  
} i=+ "[h^  
tO#y4<  
public static void swap(int[] data, int i, int j) { #Uo 9BM  
int temp = data; <?!#QA  
data = data[j]; 3:r;(IaX  
data[j] = temp; dCBJV  
} D<:9pLD(  
} 2KU [Yd  
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