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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。 wQSye*ec  
插入排序: t$18h2yOL  
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package org.rut.util.algorithm.support; e@Lxduq  
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import org.rut.util.algorithm.SortUtil; ( Jk& U8y  
/** q(6.VU@  
* @author treeroot n^Ca?|} ,  
* @since 2006-2-2 5 wrRtzf  
* @version 1.0 x#J9GP.  
*/ OT%E|) 6'  
public class InsertSort implements SortUtil.Sort{ x9"Cm;H%  
H OR8Jwf:  
/* (non-Javadoc) 9{*{Ba  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UqOBr2 UmG  
*/ ;!MQ@Fi^  
public void sort(int[] data) { %.Ma_4o Z  
int temp; D%p*G5Bg3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C9!t&<\ }  
}  bDkZU  
} iT>u&0B-  
} Aqmpo3P[+  
x b"z%.j  
}  :\\NK/"  
H~a ~ 'tm  
冒泡排序: fQJ`&9m*BF  
H648[H[k  
package org.rut.util.algorithm.support; d:@+dS  
<+_XGOt0<  
import org.rut.util.algorithm.SortUtil; >R+-mP!nj  
D\acA?d`  
/** {^WK#$]  
* @author treeroot @>)VQf8s1  
* @since 2006-2-2 EtKq.<SJ  
* @version 1.0 +/~]fI  
*/ Xp:A;i9  
public class BubbleSort implements SortUtil.Sort{ {]k#=a4  
}a7d(7  
/* (non-Javadoc) (/e&m=~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f#0HiE!  
*/ m+<&NDj.  
public void sort(int[] data) { #\0m(v  
int temp; T/_u;My;  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ti%MOYNCv  
if(data[j] SortUtil.swap(data,j,j-1); D&G6^ME  
} .a.H aBBV  
} c/|{yp$Ga>  
} *;fTiL  
} IT| h;NUG  
L4>14D\  
} ^kKLi  
)9YDNVo*-  
选择排序: FDMQ Lxf  
jHFjd'  
package org.rut.util.algorithm.support; 0D(8-H  
Lce,]z\ _  
import org.rut.util.algorithm.SortUtil;  g\q .  
AYAU  
/** \@gV$+{9  
* @author treeroot A{ +/$7vek  
* @since 2006-2-2 UP-eKK'z  
* @version 1.0 5pCicwea#  
*/ ZISIW!  
public class SelectionSort implements SortUtil.Sort { uY]';Ot G  
=Z\q``RBy  
/* 4uXGp sL  
* (non-Javadoc) ~H}Z;n]H  
* OrkcY39"~a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N]P~`)  
*/ gP% <<yl  
public void sort(int[] data) { x{1 v(n8+=  
int temp; )Te\6qM  
for (int i = 0; i < data.length; i++) { Tn7Mt7h  
int lowIndex = i; Y~UuT8-c  
for (int j = data.length - 1; j > i; j--) { `% 9Y)a/e  
if (data[j] < data[lowIndex]) { Y25`vE(  
lowIndex = j; D!`[fjs6A  
} ynsYU(  
} TGJz[Ny  
SortUtil.swap(data,i,lowIndex); Wg|6{'a  
} ug9Ja)1|  
} ;jzJ6~<  
K *@?BE  
} 'V&g"Pb  
8{>|%M  
Shell排序: o?a2wY^_  
0~nX7  
package org.rut.util.algorithm.support; Ua}R3^_)a  
{!I`EN]  
import org.rut.util.algorithm.SortUtil; OxJ HhF  
o,i_py  
/** QbJ7$ ,4  
* @author treeroot f7&ni#^Ztj  
* @since 2006-2-2 VzT*^PFBg  
* @version 1.0 (Y~/9a4X  
*/ < se~wR  
public class ShellSort implements SortUtil.Sort{ mS%4  
#un'?]tZF  
/* (non-Javadoc) &* VhtT?=5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >!fTWdD^  
*/ B&MDn']fV/  
public void sort(int[] data) { W? G4>zA  
for(int i=data.length/2;i>2;i/=2){ CEj_{uf|  
for(int j=0;j insertSort(data,j,i); Te+#  
} =c6d $  
} s)\PY  
insertSort(data,0,1); rCo}^M4Pb  
} b'O/u."O  
[r2V+b.C  
/** w"v96%"Y  
* @param data ! Vl)aL  
* @param j 27Gff(  
* @param i |;J`~H"K  
*/ 1feVFRx'  
private void insertSort(int[] data, int start, int inc) { Yup#aeXY/  
int temp; tar/no  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); R&!;(k0  
} %s}{5Qcl/  
} :a8Sy("  
} X!hzpg(`hR  
=sW K;`  
} IR"C?  
7^>~k}H  
快速排序: Ktk?(49  
gPn0-)<  
package org.rut.util.algorithm.support; +P))*0(c_  
}X9 &!A8z  
import org.rut.util.algorithm.SortUtil; P*k n}:  
W(62.3d~}?  
/** -']Idn6  
* @author treeroot !~zn*Hm  
* @since 2006-2-2 O C;~ H{  
* @version 1.0 92j[b_P  
*/ (%6fZ  
public class QuickSort implements SortUtil.Sort{ Lq3<&$  
y_: {p5u  
/* (non-Javadoc) tO&n$$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^4IJL",  
*/ I!!cA?W  
public void sort(int[] data) { ;Q t%>Uo8  
quickSort(data,0,data.length-1); @CM5e!  
} KEy8EB  
private void quickSort(int[] data,int i,int j){ 5Y;&L!T  
int pivotIndex=(i+j)/2; hvI#D>Z!Yp  
file://swap 7oC8I D  
SortUtil.swap(data,pivotIndex,j); SEnr"}  
}>iNT.Lvd  
int k=partition(data,i-1,j,data[j]); e=##X}4zZ  
SortUtil.swap(data,k,j); }#<Rs  
if((k-i)>1) quickSort(data,i,k-1); SOPair <r  
if((j-k)>1) quickSort(data,k+1,j); hc W>R  
w!`e!}  
} `j {q  
/** eSZ':p  
* @param data ~APS_iG[  
* @param i ,OrrGwp&  
* @param j +6:  
* @return oHfr glGX  
*/ #)L}{mHLM-  
private int partition(int[] data, int l, int r,int pivot) { WXo bh  
do{ 5ms]Wbh)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g\B ? |%  
SortUtil.swap(data,l,r); 44 8%yP  
} \hBzQ%0  
while(l SortUtil.swap(data,l,r); uju'Bs7   
return l; SDbkPx  
} me@`;Q3  
uNEl]Q]<e]  
} mY=sh{ir  
; P<h 9(  
改进后的快速排序: UOj*Gt&  
j0LZ )V  
package org.rut.util.algorithm.support; jc3Q3Th/zn  
k"=*'  
import org.rut.util.algorithm.SortUtil; 7`7M4  
Ze/\IBd  
/** t!xdKX& }  
* @author treeroot W$7H "tg  
* @since 2006-2-2 oumbJ7X=L  
* @version 1.0 y<HNAG j  
*/ o;DK]o>kH  
public class ImprovedQuickSort implements SortUtil.Sort { By9CliOy:  
 +mft  
private static int MAX_STACK_SIZE=4096; q`8 5-  
private static int THRESHOLD=10; x44V 9-o  
/* (non-Javadoc) 0`V=x+*,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0i5S=L`j  
*/ @8w[Zo~  
public void sort(int[] data) { EhKG"Lb+  
int[] stack=new int[MAX_STACK_SIZE]; 8 mOGEx  
xVYa-I[Z  
int top=-1; gKQs:25  
int pivot; iW2\;}y  
int pivotIndex,l,r; ;Y8>?  
#I MaN%  
stack[++top]=0; \)6AzCq  
stack[++top]=data.length-1; [CI0N I6F  
tZx}/&m-  
while(top>0){ amExZ/  
int j=stack[top--]; Jza ?DhSAZ  
int i=stack[top--]; p7{H "AC  
]H{* Z3S  
pivotIndex=(i+j)/2; O46v  
pivot=data[pivotIndex]; 0s Jp,4Vv  
} tBw<7fe  
SortUtil.swap(data,pivotIndex,j); V^!^wLLi  
[jCYj0Qf8  
file://partition ukVBC"Ny  
l=i-1; ue?3;BF 5  
r=j; XgXXBKf$  
do{ Z0v?3v}9^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }(DH_0  
SortUtil.swap(data,l,r); 1=T;68B  
} @*|UyK.   
while(l SortUtil.swap(data,l,r); L%3Bp/`S  
SortUtil.swap(data,l,j); $e4N4e2x/  
,cS_687o  
if((l-i)>THRESHOLD){ vgDpo@fz8  
stack[++top]=i; ZI4dD.B  
stack[++top]=l-1; F/1m&1t  
} K;Hgq4  
if((j-l)>THRESHOLD){ 1R yE8DdP  
stack[++top]=l+1; gH,Pz  
stack[++top]=j; h 2JmRO  
} xCWS  
4i&Rd1#0dI  
} 8mLW^R:`  
file://new InsertSort().sort(data); UqsOG<L'6  
insertSort(data); bJ9*z~z)e  
} Tb;,t=;u  
/** 1M_Vhs^  
* @param data liy/uZ  
*/ .v}|Tp&k  
private void insertSort(int[] data) { {jwLVKT$  
int temp; x)N QRd  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); VR1[-OE  
} z6;hFcO  
} oC} u  
} q7_Ttjn-DV  
/s+IstW  
} O&y`:#  
;/pI@C k  
归并排序: VpB)5>  
f8WI@]1F  
package org.rut.util.algorithm.support; sSwY!";  
X<$DNRN  
import org.rut.util.algorithm.SortUtil; -F*vN'  
 Pw +nO  
/** ?EHheZ{  
* @author treeroot SYf1dbc..u  
* @since 2006-2-2 3` oOoKX  
* @version 1.0 >!lpI5'Z&  
*/ \RPwSx  
public class MergeSort implements SortUtil.Sort{ gs/ocu  
z$d<ep{6  
/* (non-Javadoc) \X! NoF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7TI6EKr  
*/ Z1v~tqx  
public void sort(int[] data) { b$Dh|-8  
int[] temp=new int[data.length]; W#^.)V  
mergeSort(data,temp,0,data.length-1); KZcmNli&A  
}  h 7l>(3  
`jr?I {m;  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ya!%o> J%t  
int mid=(l+r)/2; kw#-\RR_c  
if(l==r) return ; RP+)sCh  
mergeSort(data,temp,l,mid); q &{<HcP  
mergeSort(data,temp,mid+1,r); X's<+hK&  
for(int i=l;i<=r;i++){ ZvT>A#R;l~  
temp=data; S-Bx`e9'  
} YHu]\'Ff  
int i1=l; goF87^M  
int i2=mid+1; [eOv fD  
for(int cur=l;cur<=r;cur++){ v4'kV:;&  
if(i1==mid+1) dkDPze9l  
data[cur]=temp[i2++]; wsH_pF  
else if(i2>r) q~W:W}z  
data[cur]=temp[i1++]; bX:h"6{=R  
else if(temp[i1] data[cur]=temp[i1++]; q3h& V  
else i`+bSg  
data[cur]=temp[i2++]; T,>L  
} nfGI4ZE  
} %.$7-+:7A  
t&[<Dl/L  
} Yc_(g0NK  
H=f| X<8  
改进后的归并排序: ]b sabS?  
M3|G^q:l  
package org.rut.util.algorithm.support; dkCU U  
'6>*J  
import org.rut.util.algorithm.SortUtil; <LXx_{=:  
SZ$WC8AX  
/** v3XM-+Z4  
* @author treeroot 10c.#9$  
* @since 2006-2-2 p nI=  
* @version 1.0 )7 8T+7Kq  
*/ 0jjtx'F  
public class ImprovedMergeSort implements SortUtil.Sort { %+Z*-iX  
BbC O K  
private static final int THRESHOLD = 10; woP j>M  
t8xXGWk0  
/* .PR+_a-X  
* (non-Javadoc) {]dtA&8(  
* fG$LqzyqlK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~gMt U  
*/ %-.;sO=g  
public void sort(int[] data) { rvd%z7Z1o  
int[] temp=new int[data.length]; !3mt<i]a"  
mergeSort(data,temp,0,data.length-1); S7PWP< 9  
} sO 6=w%l^  
iT,7jd?6#  
private void mergeSort(int[] data, int[] temp, int l, int r) { 2E!~RjxSY  
int i, j, k; btq 4diW  
int mid = (l + r) / 2; SUUN_w~  
if (l == r) 3z2 OW@zL$  
return; 6(4d3}F  
if ((mid - l) >= THRESHOLD) *x;4::'Jn  
mergeSort(data, temp, l, mid); :N$-SV  
else r-.@MbBm  
insertSort(data, l, mid - l + 1); h"0)spF"d  
if ((r - mid) > THRESHOLD) u5glKE  
mergeSort(data, temp, mid + 1, r); h ! R=t  
else dpNERc5  
insertSort(data, mid + 1, r - mid); p@4GI[4  
0NC70+4L  
for (i = l; i <= mid; i++) { 7dACbqba  
temp = data; pb)8?1O|s  
} rZaO^}u]  
for (j = 1; j <= r - mid; j++) { Z f\~Cl  
temp[r - j + 1] = data[j + mid]; fC*cqc~{@  
} -,p=;t#(  
int a = temp[l]; @v#P u_  
int b = temp[r]; \i%mokfbc  
for (i = l, j = r, k = l; k <= r; k++) { (4A'$O2  
if (a < b) { [x>Ju&))$  
data[k] = temp[i++]; 9CeR^/i  
a = temp; 6:Z8d%Z  
} else { tLfhW1"  
data[k] = temp[j--]; 3Ioe#*5\  
b = temp[j]; =uAy/S  
} wT::b V{  
} GjHR.p?-  
} q=BljSX  
\P?X`]NwnO  
/** T+$H[ &j  
* @param data }F_c0zM  
* @param l KbvMp1'9P  
* @param i zN|k*}j1J  
*/ SFDTHvXu#_  
private void insertSort(int[] data, int start, int len) { Q zaD\^OF  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uu,F5<y[  
} ZqVbNIY   
} 'OziP  
} jj2\;b:a0  
} u%)gnj_  
qclc--fsE  
堆排序: }>0>OqvF  
yivu|q  
package org.rut.util.algorithm.support; &.*UVc2+Y  
Z}dK6h5+'  
import org.rut.util.algorithm.SortUtil; e:9EP,  
V1V0T ,  
/** {a:05Y  
* @author treeroot TI< x;p  
* @since 2006-2-2 NEri{qxm  
* @version 1.0 Nq6'7'x  
*/ x2#JD|0  
public class HeapSort implements SortUtil.Sort{ p#ar`-vQ  
"}fweCBgo  
/* (non-Javadoc) jBw)8~tYm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K -rR)-rI  
*/ ls]N&!/hq  
public void sort(int[] data) { U-u?oU-.'  
MaxHeap h=new MaxHeap(); )P:^A9&_n=  
h.init(data); IFX$\+-  
for(int i=0;i h.remove(); cZ?QI6|[  
System.arraycopy(h.queue,1,data,0,data.length); d-UeItyW*  
} rXX>I;`&  
D'#Q`H  
private static class MaxHeap{ #lP8/-s^  
;X,u   
void init(int[] data){ "[|b,fxR  
this.queue=new int[data.length+1]; 2Kz+COP+  
for(int i=0;i queue[++size]=data; xZ9:9/Vg  
fixUp(size); %7)=k}4  
} p?rlx#M  
} YNU}R/u6^  
7R2O[=Szq  
private int size=0; kk3^m1  
<'I["Um  
private int[] queue; :;7I_tb  
fo@^=-4A-  
public int get() { [s {!  
return queue[1]; St-uE |8  
} y!77gx?-  
A]/o-S_  
public void remove() { { :tO RF  
SortUtil.swap(queue,1,size--); @dDeOnF  
fixDown(1); pFd8p@m_2  
} "n!yK  
file://fixdown ;"wCBuXcu  
private void fixDown(int k) { i/ilG 3m>  
int j; B;1qy[  
while ((j = k << 1) <= size) { ~.m<`~u  
if (j < size %26amp;%26amp; queue[j] j++; F3qK6Ah.  
if (queue[k]>queue[j]) file://不用交换 )?*YrWO{  
break; I9*cEZ!l=e  
SortUtil.swap(queue,j,k); n~*".ZC'Y  
k = j; %X{EupiFA  
} @Iv;y*y  
} fe?Z33V  
private void fixUp(int k) { }~XWtWbd-  
while (k > 1) { 'jtC#:ePK  
int j = k >> 1; Wp=3heCa6  
if (queue[j]>queue[k]) ~f1g"   
break; QOF@Dv Q  
SortUtil.swap(queue,j,k); pIJXP$v3  
k = j; 4]y)YNQ(  
} pE4a~:  
} k&]nF,f  
Z',!LK!  
} Ma[EgG  
{3tzr;c?  
} e`D}[G#  
/~[Lr   
SortUtil: 6Xlzdt  
~7P)$[  
package org.rut.util.algorithm; W7i|uTM  
t;&XIG~  
import org.rut.util.algorithm.support.BubbleSort; ,S8K!  
import org.rut.util.algorithm.support.HeapSort; 4>hHUz[_  
import org.rut.util.algorithm.support.ImprovedMergeSort; aLJm%uW6m&  
import org.rut.util.algorithm.support.ImprovedQuickSort; g{65QP  
import org.rut.util.algorithm.support.InsertSort; @X2*O9  
import org.rut.util.algorithm.support.MergeSort; \c=I!<9  
import org.rut.util.algorithm.support.QuickSort; {*ak>Wud  
import org.rut.util.algorithm.support.SelectionSort; $cCC 1=dW  
import org.rut.util.algorithm.support.ShellSort; V#t_gS  
T # \  
/** "ZuuSi  
* @author treeroot &XP(D5lf`B  
* @since 2006-2-2 Bh>L"'.2  
* @version 1.0 xP9(J 0y  
*/ `Lf'/q   
public class SortUtil { n|SV)92o1  
public final static int INSERT = 1; z$32rt8{`v  
public final static int BUBBLE = 2; `2s!%/  
public final static int SELECTION = 3; Hcq.Lq;2:  
public final static int SHELL = 4; 'rD6MY  
public final static int QUICK = 5; NO"PO @&Wk  
public final static int IMPROVED_QUICK = 6; Ccf/hA#mb  
public final static int MERGE = 7; +eM${JyXH  
public final static int IMPROVED_MERGE = 8; XpIiJry!6  
public final static int HEAP = 9; a&y^Ps6=  
c7Z4u|G  
public static void sort(int[] data) { C6_(j48&  
sort(data, IMPROVED_QUICK); ?Ec9rM\ze  
} RU)35oEV|  
private static String[] name={ Y?VbgOM)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {f!/:bM  
}; ?9b9{c'an  
5,RUPaE  
private static Sort[] impl=new Sort[]{ R?2sbK4Cz  
new InsertSort(), GF'wDi}  
new BubbleSort(), 'Ts:.  
new SelectionSort(), qS!r<'F3dP  
new ShellSort(), -EjXVn! vQ  
new QuickSort(), `2~>$Tr  
new ImprovedQuickSort(), .J"N}  
new MergeSort(), 3dShznlf_*  
new ImprovedMergeSort(), gg;r;3u  
new HeapSort() E h%61/  
}; 5jdZC(q5a  
)xGAe#E~j  
public static String toString(int algorithm){ ]$ew 5%  
return name[algorithm-1]; [uq>b|`R G  
} z3fv}_\z  
bf3!|Um  
public static void sort(int[] data, int algorithm) { L"L3n,%F  
impl[algorithm-1].sort(data); &J[a.:..  
} Pf?kNJ*Tv)  
*dzZOe>,  
public static interface Sort { E*_^+ %  
public void sort(int[] data); ));#oQol9  
} 5sD,gZ7  
=lXj%V^8N  
public static void swap(int[] data, int i, int j) { ?0tg}0|  
int temp = data; da{]B5p\  
data = data[j]; $EMOz=)I#  
data[j] = temp; s:`i~hjq  
} 85{m+1O~  
} <_tmkLeZf  
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