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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。 UuN(+&oD-  
插入排序: ? in&/ZrB  
9QpKB c  
package org.rut.util.algorithm.support; Qt k'^Fc  
L%"&_v#a^  
import org.rut.util.algorithm.SortUtil; /];F4AO5  
/** )2a!EEHz  
* @author treeroot &B) F_EI  
* @since 2006-2-2 Jyd%!v  
* @version 1.0 \"5\hX~dS  
*/ (T@ov~ @  
public class InsertSort implements SortUtil.Sort{ te1lUQ  
k&Sg`'LG8  
/* (non-Javadoc) 'h:4 Fzo<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _PuMZjGL  
*/ 2 `#|;x^<  
public void sort(int[] data) { $T1c{T6n}  
int temp; #pf}q+A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XOxm<3gXn  
} UZ y  
} NoMEe<  
} fUa`Y ryQ  
XVY^m}pMe  
} w^r*qi"  
zFOX%q  
冒泡排序: ?&?y-&.5-  
ct/I85c@P  
package org.rut.util.algorithm.support; y&iLhd!p  
tJ 6:$dh  
import org.rut.util.algorithm.SortUtil; fd(>[RP?  
*? c~7ru  
/** I qma vnM#  
* @author treeroot {|a' =I#2  
* @since 2006-2-2 h.DQ6!?;s  
* @version 1.0 ieObo foD  
*/ rt"\\sOlMB  
public class BubbleSort implements SortUtil.Sort{ \A':}<Rj  
b+{,c@1rd  
/* (non-Javadoc) \"n&|_SZ\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^E5Xpza  
*/ k%hif8y  
public void sort(int[] data) { /H\ZCIu/7  
int temp; o'W &gkb9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @#sQ7eMoy  
if(data[j] SortUtil.swap(data,j,j-1); ?Hq`*I?b9  
} 3B>!9:w~f  
}  ,5<-\"{]  
} [3j]r{0I  
} iE$0-Qe[3  
~jJu*s$?  
} gp;(M~we  
wj Y3:S~  
选择排序: <;= X7l+  
%uQ^mK  
package org.rut.util.algorithm.support; #B54p@.}  
+&JF|#FQ`  
import org.rut.util.algorithm.SortUtil; puDy&T  
-O oXb( I4  
/** $+$+;1[  
* @author treeroot j'~xe3j  
* @since 2006-2-2 ~?nPp$^  
* @version 1.0 %2V_%KA  
*/ mz>"4-]  
public class SelectionSort implements SortUtil.Sort { x_#yH3kJ  
>&p_G0-  
/* Jzh_`jW0l  
* (non-Javadoc) 89~)nV)  
* ?9/%K45  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0^zu T  
*/ VYvHpsI  
public void sort(int[] data) { *S*;rLH9c  
int temp; %]d^B |  
for (int i = 0; i < data.length; i++) { h}.0Ne  
int lowIndex = i; g(|p/%H  
for (int j = data.length - 1; j > i; j--) { cLX~NPD/  
if (data[j] < data[lowIndex]) { C#;}U51:t  
lowIndex = j;  :;rd!)5  
} ^-rb&kW@:  
} <.~j:GbsE  
SortUtil.swap(data,i,lowIndex); %WdAI,  
} ar R)]gk 7  
} E+csK*A7  
. [*6W.X  
} i yMIP~N,$  
."cC^og  
Shell排序: ig3uY#  
v"\Q/5p  
package org.rut.util.algorithm.support; X`[or:cB  
k'EP->r  
import org.rut.util.algorithm.SortUtil; *S`& X Pj  
L7C!rS  
/** SkVW8n*s  
* @author treeroot ?;!l-Dy  
* @since 2006-2-2 -k")#1  
* @version 1.0 & Z*&&  
*/ , En D3 |  
public class ShellSort implements SortUtil.Sort{ KTd4pW?w  
  /zM  
/* (non-Javadoc) Vtr 0=-m&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LBbk]I  
*/ r>A, 7{  
public void sort(int[] data) {  KGFmC[  
for(int i=data.length/2;i>2;i/=2){ >4b-NS/}0  
for(int j=0;j insertSort(data,j,i); l. !5/\  
} }D{y u+)  
} Dtt[a  
insertSort(data,0,1); (?;Fnq  
} `+{|k)2B  
,accw}G  
/** tBp dKJn##  
* @param data d%\en&:la  
* @param j n:x6bPal]  
* @param i Nq Ve{+1x  
*/ _.yBX\tf[  
private void insertSort(int[] data, int start, int inc) { =X]$J@j  
int temp; >@` D@_v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]t(;bD hT  
} \k;*Ej~.  
} rt^<=|Z  
} [C.Pzo  
;WWUxrWif  
} vSX71  
TlQu+w|  
快速排序: Si.3Je[q  
k[&+Iy  
package org.rut.util.algorithm.support; wk' |gI[W  
cEhwv0f!qS  
import org.rut.util.algorithm.SortUtil; 2a 3i]e5Kt  
s: ~3|D][  
/** #0zMPh /U}  
* @author treeroot ej4xW~_  
* @since 2006-2-2 uwU;glT  
* @version 1.0 L?23Av0W  
*/ LSs!U 3"  
public class QuickSort implements SortUtil.Sort{ 8%@7G*  
ZEiW\ V  
/* (non-Javadoc) S8TJnv`?'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]9pK^<  
*/ $2~I-[  
public void sort(int[] data) { f4@>7K]9TA  
quickSort(data,0,data.length-1); 0V }knR.l  
} 'x$>h)t]  
private void quickSort(int[] data,int i,int j){ b<u   
int pivotIndex=(i+j)/2; VK5|w:  
file://swap 9|jk=`4UK  
SortUtil.swap(data,pivotIndex,j); Z ^zUb  
9~J  
int k=partition(data,i-1,j,data[j]); 3){ /u$iH.  
SortUtil.swap(data,k,j); Xb@lKX5Re  
if((k-i)>1) quickSort(data,i,k-1); )#%k/4(Y  
if((j-k)>1) quickSort(data,k+1,j); /{gCf  
/4}{SE  
} 07:CcT  
/** oj/,vO:QT  
* @param data )S]4 Kt_  
* @param i z^;*&J   
* @param j $DuX1T  
* @return 4 Z.G  
*/ *fQ$s  
private int partition(int[] data, int l, int r,int pivot) { IV]s!  
do{ EZ15  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ]2`PS<a2  
SortUtil.swap(data,l,r); X~(%Y#6  
} 3C=ON.1eg  
while(l SortUtil.swap(data,l,r); #T &z`  
return l; qv>?xKSm  
} wxYB-Wh<  
$[x2L s~  
} j-e/nZR@  
|j3mI\ANF  
改进后的快速排序: aY&He~  
@8a1a3_F  
package org.rut.util.algorithm.support; n&DRh.@  
v!{mpF  
import org.rut.util.algorithm.SortUtil; ?fr -5&,  
@Fv"j9j-3G  
/** 65X$k]x  
* @author treeroot jODx&dVr  
* @since 2006-2-2 tXDO@YH3S  
* @version 1.0 }D02*s  
*/ zkHwoAD;t8  
public class ImprovedQuickSort implements SortUtil.Sort { +nU"P  
J{<,V\t)  
private static int MAX_STACK_SIZE=4096; ;<i`6e  
private static int THRESHOLD=10; c'ExZ)RJ  
/* (non-Javadoc) J\VG/)E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^LO=&Cq  
*/ nK=-SQ  
public void sort(int[] data) { f_y+B]?'M  
int[] stack=new int[MAX_STACK_SIZE]; G9"2h \  
x;w&JS1 V  
int top=-1; *8y kE  
int pivot; XaOq&7  
int pivotIndex,l,r; ig(dGKD\=9  
/G[; kR"  
stack[++top]=0; j5QS/3  
stack[++top]=data.length-1; RR R'azT  
O%?noW  
while(top>0){ %<8@NbF  
int j=stack[top--]; }g6:9%ZMu  
int i=stack[top--]; A& u"NgJ  
CvDy;'{y1  
pivotIndex=(i+j)/2; `3GC}u>}  
pivot=data[pivotIndex]; ~`-z"zM:p  
g|L" |Q  
SortUtil.swap(data,pivotIndex,j); .b'hVOs{  
#Q320}]{  
file://partition DWT4D)C,U  
l=i-1; OJ0Dw*K<  
r=j; KFd !wZ @e  
do{ 7[aSP5e>T  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1xAZ0X#  
SortUtil.swap(data,l,r); *tkbC2D  
} 'oNY4.[  
while(l SortUtil.swap(data,l,r); rBG8.E36J  
SortUtil.swap(data,l,j); "uK`!{  
$42%H#  
if((l-i)>THRESHOLD){ 0=  ]RG  
stack[++top]=i; Ck<g0o6  
stack[++top]=l-1; MW&ww14  
} ~&)  
if((j-l)>THRESHOLD){ Rf7*Ut wVr  
stack[++top]=l+1; 2pa: 3O  
stack[++top]=j; %{'hpT~h  
} RDX".'`(=  
 O+D"7  
} PW a!7n#A  
file://new InsertSort().sort(data); `72 uf<YQ  
insertSort(data); v}w=I}<x  
} J<8~w; i  
/** +o&&5&HR  
* @param data %*d(1?\o  
*/ DxX333vC  
private void insertSort(int[] data) { 57:Wh= x  
int temp; zyey5Z:7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J*@(rb#G  
} W '54g$T  
} 2x3'm  
} CYlZ<W'  
zQsu~8PX  
} Mx& P^#B3  
GS1Vcav<  
归并排序: }*0OLUFFJ  
L_$M9G|5n  
package org.rut.util.algorithm.support; aBL+i-  
\g|u|Y.2[  
import org.rut.util.algorithm.SortUtil; ;-Bi~XD  
Gp6|0:2,L~  
/** NUB3L  
* @author treeroot 6OeRBD&  
* @since 2006-2-2 6@ `'}  
* @version 1.0 M+Rxt.~6  
*/ WHh=ht s\  
public class MergeSort implements SortUtil.Sort{ +;nADl+Q  
bvM\Qzc!<3  
/* (non-Javadoc) |UbwPL_L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xxnMvL;  
*/ 9r@T"$V#c  
public void sort(int[] data) { P(N$U^pj  
int[] temp=new int[data.length]; F,B,D^WD  
mergeSort(data,temp,0,data.length-1); 'k2Z$+  
} /*B^@G|]'  
j\t"4=,n  
private void mergeSort(int[] data,int[] temp,int l,int r){ Mk-C&#'  
int mid=(l+r)/2; "+^d.13+]  
if(l==r) return ; JvFU7`4@  
mergeSort(data,temp,l,mid); dL9QYIfP  
mergeSort(data,temp,mid+1,r); hGc')  
for(int i=l;i<=r;i++){ +f)Nf) \q  
temp=data; rw*#ta O  
} Z$h39hm?c  
int i1=l; &^-quzlZ  
int i2=mid+1; vF45tw  
for(int cur=l;cur<=r;cur++){ 71GLqn?  
if(i1==mid+1) S&BJR!FQ  
data[cur]=temp[i2++]; +*OY%;dQ7@  
else if(i2>r) 4qw&G  
data[cur]=temp[i1++]; z1oikg:?4  
else if(temp[i1] data[cur]=temp[i1++]; "WKE% f  
else ^%|(dMo4  
data[cur]=temp[i2++]; cpV:y  
} n1Ag o3NM  
} 7QdU|1]  
E%L]ifA9!  
} ,nMc. G3  
$~,]F  
改进后的归并排序: qwka77nNT  
8'+XR`g:ax  
package org.rut.util.algorithm.support; /uSEG<D  
,"/<N*vh  
import org.rut.util.algorithm.SortUtil; GnbXS>  
'c#ZW| A  
/** w}Q|*!?_  
* @author treeroot &HKrmFgX{  
* @since 2006-2-2 xe)< )y  
* @version 1.0 wzAp`Zs2Dm  
*/ 7S<Z&1(  
public class ImprovedMergeSort implements SortUtil.Sort { ?3tR(H<  
A/NwM1z[o)  
private static final int THRESHOLD = 10; "yMr\jt~-  
6"Tr$E  
/* 64s9Dy@%F  
* (non-Javadoc) ~g2ColFhu  
* |L{<=NNs:D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Mnpb".VU#T  
*/ U4*5o~!=S  
public void sort(int[] data) { (tGK~!cAv  
int[] temp=new int[data.length]; cTRQI3Oa>  
mergeSort(data,temp,0,data.length-1); e=nExY  
} X~RET[L2  
bHcb.;<  
private void mergeSort(int[] data, int[] temp, int l, int r) { &,':@OQ  
int i, j, k; (bo{vX  
int mid = (l + r) / 2; hB:R8Y^?H  
if (l == r) Fs:l"5~>1  
return; Jrlc%,pZ  
if ((mid - l) >= THRESHOLD) zqAK|jbL  
mergeSort(data, temp, l, mid); ;2RCgX!'%  
else Nzc1)t=  
insertSort(data, l, mid - l + 1); Z2 B59,I  
if ((r - mid) > THRESHOLD) LV=!nF0  
mergeSort(data, temp, mid + 1, r); ~AuvB4xe~  
else k}-%NkQ 9O  
insertSort(data, mid + 1, r - mid); r8C6bFYM  
x U1dy*-  
for (i = l; i <= mid; i++) { gDnG!i+  
temp = data; m^_)aS  
} 'w.:I TJf  
for (j = 1; j <= r - mid; j++) { avls[Bq  
temp[r - j + 1] = data[j + mid]; }vO^%Gd  
} Cm}ZeQ  
int a = temp[l]; ja2LQe@ Q  
int b = temp[r]; GpF,=:  
for (i = l, j = r, k = l; k <= r; k++) { >fo &H_a  
if (a < b) { &K k+RHM  
data[k] = temp[i++]; ,K7C2PV6  
a = temp; yo V"?W>!  
} else { GMOv$Tn-_L  
data[k] = temp[j--]; {U=za1Ga  
b = temp[j]; uXeBOLC  
} j^Zp BNL  
} rjU $*+  
} yB}y'5  
X4i$,$C  
/** N|q:wyS|  
* @param data vzaxi;S<  
* @param l @N.W#<IG  
* @param i zE.4e&m%Z?  
*/ ?Z!itB~  
private void insertSort(int[] data, int start, int len) { R|t.wawCo  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5n.4>yOY  
} D]b5*_CT  
} ^f!d8 V  
} cJ:BEe  
} -<&"geJA  
O\OG~`HBN  
堆排序: :[(X!eP  
)2F:l0g  
package org.rut.util.algorithm.support; k` (_~/#  
c<JJuG  
import org.rut.util.algorithm.SortUtil; /]]\jj#^  
1; L!g*!E  
/** #=t:xEz  
* @author treeroot R|NmkqTK~(  
* @since 2006-2-2 bz H5Lc{%  
* @version 1.0 2~h)'n7Mw  
*/ Q*$x!q  
public class HeapSort implements SortUtil.Sort{ TQ@*eoJj  
lKIHBi  
/* (non-Javadoc) 9 J5Z'd_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f{ S)wE>;  
*/ 1t!Mg{&e[x  
public void sort(int[] data) { 2T?t[;-  
MaxHeap h=new MaxHeap(); u[2R>=  
h.init(data); (U/[i.r5Cj  
for(int i=0;i h.remove(); !^q<)!9<EO  
System.arraycopy(h.queue,1,data,0,data.length); mMT7`r;l  
} jy@}$g{  
pSq\3Hp]Q  
private static class MaxHeap{ `-ENKr]  
lu-VBVwR  
void init(int[] data){ 4KybN  
this.queue=new int[data.length+1]; f<|8NQ2y.  
for(int i=0;i queue[++size]=data; # FaR?L![Y  
fixUp(size); !;CY @=  
} -oF4mi8S  
} `j=CzZ*em?  
C<w9f  
private int size=0; zCvR/  
WlZ[9,:p1  
private int[] queue; |7%$+g  
Y!&dj95y  
public int get() { 7\{<AM?*  
return queue[1]; <#|3z8N2  
} x6Z$lhZ  
%q>gwq A  
public void remove() { E? F @  
SortUtil.swap(queue,1,size--); +~FH'DsT  
fixDown(1); _,F wt  
} F>*w)6 4~  
file://fixdown <\zb*e&vr  
private void fixDown(int k) { :sT<<LtI-  
int j; z eIBB  
while ((j = k << 1) <= size) { UQW;!8J#R(  
if (j < size %26amp;%26amp; queue[j] j++; >y]YF3?  
if (queue[k]>queue[j]) file://不用交换 :X`J1E]Rjd  
break; `m'2RNSc+#  
SortUtil.swap(queue,j,k); ?Cu#(  
k = j; TqbKH08i/  
} SKRD{MRsux  
} d G:=tf&1R  
private void fixUp(int k) { >b*Pd *f  
while (k > 1) { |Ca$>]?  
int j = k >> 1; {8I93]  
if (queue[j]>queue[k]) 2?-}(F;Z  
break; ol`]6"Sc  
SortUtil.swap(queue,j,k); ^Gs!"Y  
k = j; kf5921(P  
} PrN?;Z.  
} yx/:<^"-$  
NmtBn^ t  
} %8{' XJ!  
|Q:`:ODy`5  
} ]Dx?HBM"DC  
u4+VG5.rhT  
SortUtil: cVulJ6  
wRie{Vk  
package org.rut.util.algorithm; /[EI0 ~P  
`VBjH]$  
import org.rut.util.algorithm.support.BubbleSort; .WG@"2z|  
import org.rut.util.algorithm.support.HeapSort; Hh!x&;x}  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3*arW|Xm  
import org.rut.util.algorithm.support.ImprovedQuickSort; T,?^J-h^  
import org.rut.util.algorithm.support.InsertSort; T 86}^=-5  
import org.rut.util.algorithm.support.MergeSort; G0*$&G0nb  
import org.rut.util.algorithm.support.QuickSort; ,sLV6DM  
import org.rut.util.algorithm.support.SelectionSort; V l9\&EL  
import org.rut.util.algorithm.support.ShellSort; 23+GX&Rp  
b|fq63ar;  
/** hZzsZQ`  
* @author treeroot .2Rh_ful  
* @since 2006-2-2 i1G}m Yz_  
* @version 1.0 (4c<0<"$  
*/ UJ6WrO5#kB  
public class SortUtil { NWNgh/9?  
public final static int INSERT = 1; W BiBtU  
public final static int BUBBLE = 2; g?@(+\W  
public final static int SELECTION = 3; Z.R^@@RqJ  
public final static int SHELL = 4; <,cDEN7  
public final static int QUICK = 5; 8@$QN4^u^  
public final static int IMPROVED_QUICK = 6; $rjv4e}7  
public final static int MERGE = 7; cIgFSwQ 4  
public final static int IMPROVED_MERGE = 8; jJ?3z ,h  
public final static int HEAP = 9; LQ{4r1,u]  
{ZfTUt)-P  
public static void sort(int[] data) { l_}c[bAUu  
sort(data, IMPROVED_QUICK); c8}1-MKs_R  
} vk#xCggK  
private static String[] name={ _wHqfj)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 7CQ48LH]  
}; jliKMd<?  
Pel3e ~?t  
private static Sort[] impl=new Sort[]{ %HSoQ?qA  
new InsertSort(), aMj3ov8p  
new BubbleSort(), &'|bZms g  
new SelectionSort(), Bq$bxuhV  
new ShellSort(), {=R=\Y?r&  
new QuickSort(), t~bjDV^`  
new ImprovedQuickSort(), \{~x<<qFd  
new MergeSort(), m*I5 \  
new ImprovedMergeSort(), a{u)~:/G  
new HeapSort() w93yhV?  
}; ].1R~7b  
^|gN?:fA}  
public static String toString(int algorithm){ =CqLZ$10  
return name[algorithm-1]; @P@t/  
} !A<?nz Uv  
g\jdR_/  
public static void sort(int[] data, int algorithm) { Crey}A/N  
impl[algorithm-1].sort(data); khEHMvVH  
} h<uRlTk  
]AfeaU'>  
public static interface Sort { %Y!lEzB5  
public void sort(int[] data); Y*7.3 +#  
} Kk/qd)nk  
fCF93,?$  
public static void swap(int[] data, int i, int j) { b8`O7@ar  
int temp = data; AalyEn&>  
data = data[j]; pWQ?pTh  
data[j] = temp; 5B@&]-'~  
} B6ys 5eQ  
} duwZe+  
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3+5=?,请输入中文答案:八 正确答案:八