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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。 ksaC[G;}:  
插入排序: )\;r V';  
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package org.rut.util.algorithm.support; E}=,"i  
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import org.rut.util.algorithm.SortUtil; Xt84Evo  
/** 4"{wga~%/  
* @author treeroot n_Y]iAoc`  
* @since 2006-2-2 (Qm;]?/  
* @version 1.0 VC(|t} L4  
*/ sEN@q   
public class InsertSort implements SortUtil.Sort{ 0cUt"(]  
~m?~eJK#a  
/* (non-Javadoc) K-u/q6ufK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B ,Brmn  
*/ ? $ c  
public void sort(int[] data) { 5U jQLB  
int temp; WCu%@hh=h  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,GnU]f  
} z0[ZO1Fo(  
} >2 qP  
} b]#d04]  
!S-U8KI|  
} F8Wq&X#r  
1[`<JCFClc  
冒泡排序: c7IR06E  
|u;PU`^-z  
package org.rut.util.algorithm.support; }2,#[m M  
6S[D"Q94  
import org.rut.util.algorithm.SortUtil; J"%}t\Q  
r![JPhei  
/** 3rg^R"&  
* @author treeroot k& s7 -yY  
* @since 2006-2-2 +yH~G9u(  
* @version 1.0 )>5k'1  
*/ vqi$}=%n?W  
public class BubbleSort implements SortUtil.Sort{ S\;.nAR  
-$t,}3  
/* (non-Javadoc) ^(*O$N*#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )6 <byO  
*/ |uBC0f  
public void sort(int[] data) { <@2# VG  
int temp; f;H#TSJ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Wb )l8[=  
if(data[j] SortUtil.swap(data,j,j-1); ;w(1Ydo  
} D])YP0|}  
} "|*Kf#  
} jsd]7C  
} _lv:"/3R  
=Fy8rTdk6r  
} 8I0T u  
otD?J= B  
选择排序: *yq]  
zn1Rou]6  
package org.rut.util.algorithm.support; qU*&49X  
]\,uF8gg)  
import org.rut.util.algorithm.SortUtil; UH-uU~  
s[@>uP  
/** 2\B9o `Y  
* @author treeroot =e8L7_;  
* @since 2006-2-2 n o+tVm|  
* @version 1.0 M.N~fSJ   
*/ S} Cp&}G{P  
public class SelectionSort implements SortUtil.Sort { gam#6 s  
%`1CE\f  
/* 2 RUR=%C  
* (non-Javadoc) `Uj?PcS_  
* ##FNq#F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wo+CQH6(  
*/ S/<"RfVU#o  
public void sort(int[] data) { hdJwNmEA>  
int temp; [RPAkp  
for (int i = 0; i < data.length; i++) { UW[{d/.wC  
int lowIndex = i; 0/@ X!|X  
for (int j = data.length - 1; j > i; j--) { Jhy t)@7/,  
if (data[j] < data[lowIndex]) { 6.h   
lowIndex = j; Df:7P>  
} A a} o*  
} uoY`qF.`  
SortUtil.swap(data,i,lowIndex); I#E(r>KW*  
} Vy^yV|`v  
} 2, "q_d'V  
,,gLrV k  
} N46$EsO!h  
vd7N&c9  
Shell排序: Gh[`q7B Q  
_OU.JrqC  
package org.rut.util.algorithm.support; ;i9<y8Dha  
W({TC  
import org.rut.util.algorithm.SortUtil; j-`X_8W  
~J>gVg%66  
/** wYO"znd  
* @author treeroot b}Hl$V(uD  
* @since 2006-2-2 }i7U}T  
* @version 1.0 Gk"L%Zt)  
*/ koEX4q  
public class ShellSort implements SortUtil.Sort{ UcLNMn|  
VMZ]n%XRXW  
/* (non-Javadoc) ]ZKt1@4AY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zP(=,)d  
*/ g2{H^YUN$_  
public void sort(int[] data) { SU%rWH  
for(int i=data.length/2;i>2;i/=2){ (21 W6  
for(int j=0;j insertSort(data,j,i); tdnXPxn[  
} YP#AB]2\}  
} u2-@?yt  
insertSort(data,0,1); nz(q)"A  
} A` o?+2s_  
Vv yrty  
/** V(2j*2R!  
* @param data p37zz4  
* @param j ,]uX:h-EM  
* @param i )0U3w#,JQ  
*/ !<=%;+  
private void insertSort(int[] data, int start, int inc) { ewAH'H]o  
int temp; rI<nUy P?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?wLdW1&PpX  
} :Dk@?o@2;C  
} r!.+XrYg  
} i,'Ka[6   
O| 1f^_S/  
} xdL/0 N3  
50`iCD  
快速排序: 'o/N}E!Pt  
P('t6MVl T  
package org.rut.util.algorithm.support; "s>fV9YyZ  
2fzKdkJhe  
import org.rut.util.algorithm.SortUtil; %R5Com  
fys5-1@-p  
/** %[Zqr;~l  
* @author treeroot ^)OZ`u8  
* @since 2006-2-2 r}oURy,5  
* @version 1.0 4FIV  
*/ 3"'# |6O9  
public class QuickSort implements SortUtil.Sort{ bvip bf[m<  
nxyjL)!)0  
/* (non-Javadoc) /i{tS`[F2a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~IlF*Zz#}6  
*/ oI_oz0nHk  
public void sort(int[] data) { -v;n"Zy1  
quickSort(data,0,data.length-1); aJ6#=G61l  
} s-C!uq  
private void quickSort(int[] data,int i,int j){ cXk6e.Uz  
int pivotIndex=(i+j)/2; ha|@ X p  
file://swap C{UF~  
SortUtil.swap(data,pivotIndex,j); PG6[lHmi  
X(GmiH /E  
int k=partition(data,i-1,j,data[j]); C#Hcv*D  
SortUtil.swap(data,k,j); ~5r=FF6  
if((k-i)>1) quickSort(data,i,k-1); Ig1lol:;  
if((j-k)>1) quickSort(data,k+1,j); <H5n>3#pH  
aFRTNu/r  
} 9Qzjqq:"Li  
/** y Y>-MoF/t  
* @param data 1 [Sv  
* @param i YVB% kKv{  
* @param j (px*R~}  
* @return Sc&)~h}YF  
*/ lx{.H,1~  
private int partition(int[] data, int l, int r,int pivot) { &GdL 9!hH  
do{ r]k*7PK  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Kajkw>z  
SortUtil.swap(data,l,r); y)3~]h\a  
} 4? m/*VV  
while(l SortUtil.swap(data,l,r); 5Noe/6  
return l; ^oQekga\l  
} Dq/3E-y5  
8W~lU~-  
} 45x,|h[F{5  
SkiJ pMN  
改进后的快速排序: 7fTxGm  
1@A7h$1P  
package org.rut.util.algorithm.support; -|m$YrzG  
#_.g2 Y  
import org.rut.util.algorithm.SortUtil; 29"mE;j  
EHpu*P~W  
/** j\2] M  
* @author treeroot 44|deE3Z  
* @since 2006-2-2 2?GXkPF2;A  
* @version 1.0 8#+`9GI  
*/ wL'oImE  
public class ImprovedQuickSort implements SortUtil.Sort { $brKl8P  
9v~1We;{$  
private static int MAX_STACK_SIZE=4096; \s=QiPK  
private static int THRESHOLD=10; Bu7A{DRf  
/* (non-Javadoc) f;.SSiT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zzX<?6MS  
*/ \Y*!f|=of  
public void sort(int[] data) { 9c#lLKrzG  
int[] stack=new int[MAX_STACK_SIZE]; RK?jtb=&A  
xN6?yr  
int top=-1; It%T7 X#  
int pivot; o;3j:# 3 |  
int pivotIndex,l,r; -NAmu97V}  
" Wp   
stack[++top]=0; <O;&qT*b  
stack[++top]=data.length-1; }dy9I H  
A?e,U,  
while(top>0){ 7egq4gN]2Y  
int j=stack[top--]; lZ}P{d'f.  
int i=stack[top--]; F(deu^s%{  
,# ]+HS^B  
pivotIndex=(i+j)/2; $zdd=.!KiK  
pivot=data[pivotIndex]; T`uDlo  
#`/bQ~s  
SortUtil.swap(data,pivotIndex,j); sNL+F  
s~L`53A  
file://partition $( S*GF$S  
l=i-1; .+OB!'dDK^  
r=j; c8T/4hU MN  
do{ Tru c[A.2Z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >GgE,h  
SortUtil.swap(data,l,r); bn$)f6%  
} !6lOIgn  
while(l SortUtil.swap(data,l,r); ^D>fis  
SortUtil.swap(data,l,j); ]*0(-@  
'?5S"??  
if((l-i)>THRESHOLD){ +6 ho)YL  
stack[++top]=i; 2zhn`m  
stack[++top]=l-1; ^[#=L4  
} L/~D<V  
if((j-l)>THRESHOLD){ k!&:(]  
stack[++top]=l+1; z^'n* h  
stack[++top]=j; 7m\vRMK  
} YUCC*t  
JRq3>P  
} >zQNHSi  
file://new InsertSort().sort(data); C ck#Y  
insertSort(data); Y.7}  
} n[|6khOL-  
/** Y,'%7u  
* @param data E$ {J  
*/ n!ZMTcK8  
private void insertSort(int[] data) { mB~~_]M N  
int temp; ^ESUMXb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `g--QR  
} \6{LR&  
} . @@an;C  
} $%Z3;:<Uf-  
$%=G[/i'  
} / $_M@>  
tj[c#@[B  
归并排序: Apmw6cc  
K U $`!h  
package org.rut.util.algorithm.support; SyAo, )j  
E4=qh1d  
import org.rut.util.algorithm.SortUtil; n&$/Q$d&  
z?4=h Sy  
/** 4Ac}(N5D@  
* @author treeroot _B3zRO  
* @since 2006-2-2 TKo<~?  
* @version 1.0 #ra*f~G  
*/ L!,d"wuD  
public class MergeSort implements SortUtil.Sort{ 2 L:$aZ  
cAb>2]M5V  
/* (non-Javadoc) w//omF'`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UA0F):  
*/ a fx'  
public void sort(int[] data) { eQ;Q4  
int[] temp=new int[data.length]; gX^ PSsp  
mergeSort(data,temp,0,data.length-1); %&h c"7/k  
} myIe_k,F  
W&YU^&`Yr  
private void mergeSort(int[] data,int[] temp,int l,int r){ OM)3Y6rK  
int mid=(l+r)/2; V#L'7">VP  
if(l==r) return ; zW5C1:.3K  
mergeSort(data,temp,l,mid); *GJ:+U&m[  
mergeSort(data,temp,mid+1,r); b!^@PIX  
for(int i=l;i<=r;i++){ U7h(-dV   
temp=data; a~opE!|m  
} w^Ag]HZN  
int i1=l; &<Zdyf?[Ou  
int i2=mid+1; 8eN7VT eb  
for(int cur=l;cur<=r;cur++){ \x(^]/@  
if(i1==mid+1) hO \/  
data[cur]=temp[i2++]; s1 bU  
else if(i2>r) g5Hr7K m  
data[cur]=temp[i1++]; /OG zt  
else if(temp[i1] data[cur]=temp[i1++]; R 5(F)abi  
else CW p#^1F  
data[cur]=temp[i2++]; 1'Rmg\(  
} Xh}&uZ`A  
} FY4T(4#  
y^R4I_* z  
} <( EyXV  
wt?o 7R2  
改进后的归并排序: D:9 2\l  
bq NP#C  
package org.rut.util.algorithm.support; ,EI:gLH  
YG`? o  
import org.rut.util.algorithm.SortUtil; kAo.C Nj7  
o_$&XNC_  
/** gi$XB}L+X  
* @author treeroot I]9 C_  
* @since 2006-2-2 {$33B'wk  
* @version 1.0 ^_W40/c3  
*/ - {{[cT I  
public class ImprovedMergeSort implements SortUtil.Sort { RV;!05^<  
:$ %>4+l  
private static final int THRESHOLD = 10; ykmv'a$-4  
v@n_F  
/* pRrHuLj^  
* (non-Javadoc) u R:rO^  
* ]C!?HQ{bsf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?aWx(dVQ  
*/ :o8MUXH$  
public void sort(int[] data) { '!Wvqs  
int[] temp=new int[data.length]; 9:8|)a(1  
mergeSort(data,temp,0,data.length-1); EI1? GB)b  
} [E|uY]DR  
fd1C {^c  
private void mergeSort(int[] data, int[] temp, int l, int r) { T$P-<s  
int i, j, k; 5JSrrpGr  
int mid = (l + r) / 2; x)oRSsv!Tr  
if (l == r) "HK/u(z)  
return; J'Sm0  
if ((mid - l) >= THRESHOLD) :m ZYS4L~  
mergeSort(data, temp, l, mid); _ck[&Q  
else #|f~s  
insertSort(data, l, mid - l + 1); JN(-.8<  
if ((r - mid) > THRESHOLD)  uMd. j$$  
mergeSort(data, temp, mid + 1, r); BJy;-(JP  
else +>tUz D  
insertSort(data, mid + 1, r - mid); Fr [7  
;gB`YNL  
for (i = l; i <= mid; i++) { yWb4Ify  
temp = data; rQr!R$t/[  
} ,Eu?JH&}u  
for (j = 1; j <= r - mid; j++) { U(,.D}PG  
temp[r - j + 1] = data[j + mid]; 3CZS)  
} 6gU{(H   
int a = temp[l]; "#4dW7E  
int b = temp[r]; k;KdW P  
for (i = l, j = r, k = l; k <= r; k++) { r\qz5G *6  
if (a < b) { /.Q4~Hw%}  
data[k] = temp[i++]; m4m<nnM  
a = temp; DQ80B)<O  
} else { N+g@8Q2s;5  
data[k] = temp[j--]; goZ V.,w  
b = temp[j]; <Ef[c@3  
} h-QLV[^  
} :Li/=>R^  
} {vVTv SC  
r:g9Z_  
/** +ts0^;QO2{  
* @param data D/ Dt   
* @param l Vw~\H Gs/~  
* @param i {' 5qv@3  
*/ m;,xmEp  
private void insertSort(int[] data, int start, int len) { 7wVH8^|  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^4pto$#@O:  
} rx!=q8=0R  
} n7! H:{L  
} [TTSA2  
} WNy3@+@GZ  
46No%cSiG  
堆排序: A)NkT`<)  
2`bdrRD0  
package org.rut.util.algorithm.support; (K<9h L+X  
l "pN90B4  
import org.rut.util.algorithm.SortUtil; C+N k"l9  
0.;}]v  
/** Q8nId<\(  
* @author treeroot j6YiE~  
* @since 2006-2-2 ]?LB?:6  
* @version 1.0 zP)~a  
*/ iiC!|`k"  
public class HeapSort implements SortUtil.Sort{ D4u% 6R|F  
A :e;k{J  
/* (non-Javadoc) h~} .G{"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l#qv 5f  
*/ jvwwJ<K  
public void sort(int[] data) { D E/:['  
MaxHeap h=new MaxHeap(); E"PcrWB&  
h.init(data); Xm!-~n@-m7  
for(int i=0;i h.remove(); nJFg^s 1  
System.arraycopy(h.queue,1,data,0,data.length); egR-w[{  
} QlZ@ To  
^ c%N/V \  
private static class MaxHeap{ {D`T0qPT[  
osP\D iQ  
void init(int[] data){ $l[Rh1z`;+  
this.queue=new int[data.length+1]; ftbpqp'  
for(int i=0;i queue[++size]=data; 01@t~v3!Z  
fixUp(size); md Gwh7/3  
} 04@cLDX8uB  
} z\!K<d"Xv  
X[3}?,aqL  
private int size=0; Ip *g'  
wdas1  
private int[] queue; 3HC  
CA s>AXbs  
public int get() { ; H0{CkH  
return queue[1]; ko\):DN  
} 5Av=3[kh"%  
:k=mzO<&  
public void remove() { gAbD7SE  
SortUtil.swap(queue,1,size--); A%bCMP  
fixDown(1); +9A\HQ|22  
} obH; g*  
file://fixdown 47>>4_Hz  
private void fixDown(int k) { aaW]J mRb  
int j; ~$,qgf  
while ((j = k << 1) <= size) { 4'>1HW  
if (j < size %26amp;%26amp; queue[j] j++; _lxco=qd=%  
if (queue[k]>queue[j]) file://不用交换 j?i#L}.I  
break; S?0$?w?  
SortUtil.swap(queue,j,k); oF&l-DHp  
k = j; ,. EBOUW^  
} gFN 9jM  
} uaPx"  
private void fixUp(int k) { ^TdZ*($5  
while (k > 1) { ~N0 sJ%  
int j = k >> 1; n# 7Pr/*0  
if (queue[j]>queue[k]) |NFZ(6vNh  
break; Ctu?o+^;z  
SortUtil.swap(queue,j,k); y/_XgPfWU  
k = j; S ZU \i*  
} 0y#Ih {L  
} ;{Ux_JEg  
Kq6jw/T  
} mI1H!  
45 >XKr.%  
} chI.{Rj  
PL=^}{r  
SortUtil: @C8DZ5)  
KLWDo%%u  
package org.rut.util.algorithm; 0Q9T3X  
)xU-;z0"~  
import org.rut.util.algorithm.support.BubbleSort; 6;b9swmh  
import org.rut.util.algorithm.support.HeapSort; XP?rOOn  
import org.rut.util.algorithm.support.ImprovedMergeSort; $iw%(H  
import org.rut.util.algorithm.support.ImprovedQuickSort; %yS3&Ju  
import org.rut.util.algorithm.support.InsertSort; 3251Vq %  
import org.rut.util.algorithm.support.MergeSort; 1R%1h9I4'  
import org.rut.util.algorithm.support.QuickSort; G;iEo4\?  
import org.rut.util.algorithm.support.SelectionSort; y' C-[nk  
import org.rut.util.algorithm.support.ShellSort; @z`@f"l  
Z}6^ve  
/** aoW6U{\  
* @author treeroot <yUstz,Xu^  
* @since 2006-2-2 v $({C  
* @version 1.0 V*[b} Xew  
*/ afG{lWE)  
public class SortUtil { ~.g3ukt  
public final static int INSERT = 1; 8MwK.H[U  
public final static int BUBBLE = 2; ?}QH=&=^  
public final static int SELECTION = 3; DvXHK  
public final static int SHELL = 4; #/S {6c  
public final static int QUICK = 5; gXFWxT8S  
public final static int IMPROVED_QUICK = 6; cI0 ]}S  
public final static int MERGE = 7; d9^E.8p$  
public final static int IMPROVED_MERGE = 8; 30j|D3-  
public final static int HEAP = 9; \_6OCVil  
,El!fgL  
public static void sort(int[] data) { 2\D8.nQr  
sort(data, IMPROVED_QUICK); ;t#]2<d*  
} LJlZ^kh  
private static String[] name={ aBuoHdg;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" V&{MQWy  
}; S_(d9GK<  
>h~IfZU1  
private static Sort[] impl=new Sort[]{ je,}_:7  
new InsertSort(), = "ts`>  
new BubbleSort(), +a@GHx 4-  
new SelectionSort(), }WLh8i?_  
new ShellSort(), d I'SwnR  
new QuickSort(), JH,/jR  
new ImprovedQuickSort(), sY SLmUZ{  
new MergeSort(), k"UO c=   
new ImprovedMergeSort(), l:B;zi`)oB  
new HeapSort() 1`0#HSO  
}; #s-iy+/1oN  
*Nb#W!  
public static String toString(int algorithm){ [tT8_}v$LN  
return name[algorithm-1]; LaFZ?7@|}  
} 22hSove.  
V<Z'(UI  
public static void sort(int[] data, int algorithm) { T.e.{yO  
impl[algorithm-1].sort(data); N3BL3:@O  
} <!d"E@%v@  
"8f?h%t  
public static interface Sort { j V3)2C}  
public void sort(int[] data); h!@,8y[B  
} JtKp(k&  
<i?a0  
public static void swap(int[] data, int i, int j) { ^Mkk@F&1  
int temp = data; ` TqSQg_l  
data = data[j]; Xf'=+f2p  
data[j] = temp; `(y(w-:W1  
} p&p.Q^"ok  
}  gJN0!N'  
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