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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。 r6} |hpJ8  
插入排序: !y:v LB#q  
TNY&asQo  
package org.rut.util.algorithm.support; kJzoFFWo$  
}v!$dr,j '  
import org.rut.util.algorithm.SortUtil; =Og)q$AL  
/** 2ZMb<b4H  
* @author treeroot v)l8@.  
* @since 2006-2-2 .C( eh   
* @version 1.0 XJ` ]ga  
*/ TKY*`?ct  
public class InsertSort implements SortUtil.Sort{ KgiJUO`PR  
Q$1bWUS&  
/* (non-Javadoc) 8WbgSY`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vp*KfS]  
*/ %]DP#~7[|  
public void sort(int[] data) { 2w_WAdi  
int temp; dzsmIV+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); kabnVVn~  
} YY)s p%  
} 9N<<{rQ,F  
} 1[qLA!+  
 TYmP)  
} bRJMYs  
eg?<mKrZ  
冒泡排序: m-*i>4;  
%?uc><&?e  
package org.rut.util.algorithm.support; K[Kh&`T  
Fzpfoz<N  
import org.rut.util.algorithm.SortUtil; u7\J\r4,+  
hMUs" <.  
/** RHq/JD-  
* @author treeroot SHbtWq}T  
* @since 2006-2-2 ^G.Xc\^w:  
* @version 1.0 =aA+~/~8%  
*/ wztA3ZL*W1  
public class BubbleSort implements SortUtil.Sort{ O-cbX/d  
7_Z#m (  
/* (non-Javadoc) #H{<gjs]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H]p!\H  
*/ Vf'd*-_!Q<  
public void sort(int[] data) { x&9hI  
int temp; 'fF;(?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _$f9]bab  
if(data[j] SortUtil.swap(data,j,j-1); >`wV1^M6?  
} x2z;6)  
} 8` @G;o  
} W#BM(I  
} iz?tu: \v&  
{%{ `l-  
} CkD#/  
8J~1-;  
选择排序: Bj}^\Pc;}  
[y)`k@  
package org.rut.util.algorithm.support; Tp?y8r  
92d6U2T4&  
import org.rut.util.algorithm.SortUtil; N:tY":Hi  
_ozg_E  
/** YoLx>8  
* @author treeroot t|<NI+H(e  
* @since 2006-2-2 gV`=jAE_  
* @version 1.0 vR=6pl$|~~  
*/ `|#Qx3n%  
public class SelectionSort implements SortUtil.Sort { t|!j2<e  
:ORR_f`>  
/* C2xL1`  
* (non-Javadoc) ]oV{t<0a  
* ]M[#.EX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \uq/x^?yo  
*/ nF4a-H&Fo  
public void sort(int[] data) { f1)x5N  
int temp; )a3J9a;ZS0  
for (int i = 0; i < data.length; i++) { ''^Y>k  
int lowIndex = i; ;w-qHha  
for (int j = data.length - 1; j > i; j--) { bY2 C]r(n  
if (data[j] < data[lowIndex]) { RUUk f({(  
lowIndex = j; 80Y\|)  
} )r z+'|,  
} G0{H5_h  
SortUtil.swap(data,i,lowIndex); V&|Ed  
} 3 M10fI?  
} #E+gXan  
V0(o~w/W%!  
} qdG~!h7j  
|?,[@z _,  
Shell排序: kWb2F7m  
k@D0 {z  
package org.rut.util.algorithm.support; t"lyvI[  
ZBG}3Z   
import org.rut.util.algorithm.SortUtil; J~iBB~x.  
#:|+XLL  
/** ror|R@;y  
* @author treeroot Z!&Rr~i <  
* @since 2006-2-2 ^*= 85iyo  
* @version 1.0 CBKkBuKuk  
*/ Q2];RS3.  
public class ShellSort implements SortUtil.Sort{ 8dOo Q  
V~yAE @9  
/* (non-Javadoc) f8<o8*`7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  \^K&vW;  
*/ o}'bv  
public void sort(int[] data) { SL&hJs4c'  
for(int i=data.length/2;i>2;i/=2){ NLe}Jqp  
for(int j=0;j insertSort(data,j,i); ]$ b<Gs  
} lE ;jCN  
} HygY>s+3[  
insertSort(data,0,1); M4LktR-[  
} uw7{>9  
w_4]xgS:  
/** ^, i>'T  
* @param data NO K/<_/  
* @param j +~U=C9[gj  
* @param i o:dR5v  
*/ ;#) mLsl  
private void insertSort(int[] data, int start, int inc) { Hj1 EGCA  
int temp; qy!Ou3^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); hc$@J}`  
} Uo_tUp_Q  
} &MgeYpd  
} |"$uRV=qm  
i~{ _eQV  
} 0gF!!m  
:Ze+%d=  
快速排序: tue/4Q#7  
V5GkP1L  
package org.rut.util.algorithm.support; m>e3vu  
q1hMmMi  
import org.rut.util.algorithm.SortUtil; *sfD#Bi]  
F X1ZG!  
/** $ 'QdFkOr  
* @author treeroot j%*7feSNC  
* @since 2006-2-2 VLg EX4  
* @version 1.0 Cw,D{  
*/ SHqyvF  
public class QuickSort implements SortUtil.Sort{ ;+I4&VieK  
8xI`jE"1  
/* (non-Javadoc) xwzT#DXGJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g>7Y~_}  
*/ mg+k'Myo+  
public void sort(int[] data) { vU/ D7  
quickSort(data,0,data.length-1); vh>{_ #  
} 'CS.p!Z\  
private void quickSort(int[] data,int i,int j){ -Ubj6 t_K  
int pivotIndex=(i+j)/2; 3On JWuVfZ  
file://swap /k7wwZiY@  
SortUtil.swap(data,pivotIndex,j); 7-9;PkGG.A  
o;-<|W>  
int k=partition(data,i-1,j,data[j]); l@d gJ  
SortUtil.swap(data,k,j); D)&o8D`  
if((k-i)>1) quickSort(data,i,k-1); 1 2]fQkp  
if((j-k)>1) quickSort(data,k+1,j); '%3{jc-}  
%N~C vN@T  
} ]u&dJL  
/** (@ea|Fd#4  
* @param data a|N0(C  
* @param i 5&4F,v[zp  
* @param j TIRHT`"i  
* @return ^[M~K5Y  
*/ 8g5V,3_6  
private int partition(int[] data, int l, int r,int pivot) { 9|K*G~J  
do{ GMFc K=  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); T=? bdIl  
SortUtil.swap(data,l,r); JY4_v>Aob  
} ] EyeBF)$  
while(l SortUtil.swap(data,l,r); uU+s!C9r  
return l; owMuT^x?  
} @]3*B %t  
BpXEK.Xw  
} Nz]aaoO4  
2v|qLf e1  
改进后的快速排序: F|]rA*2u  
pB'x_z  
package org.rut.util.algorithm.support; t+}uIp42<  
 g@(30{  
import org.rut.util.algorithm.SortUtil; f sX;Nj]  
]]V^:"ne  
/** $wXih#7  
* @author treeroot zlX! xqHj  
* @since 2006-2-2 <<BQYU)Ig  
* @version 1.0 j];1"50?  
*/ bf^ly6ml  
public class ImprovedQuickSort implements SortUtil.Sort { I;iR(Hf)?q  
fbL!=]A*3  
private static int MAX_STACK_SIZE=4096; xucIjPi]  
private static int THRESHOLD=10; \R;K>c7=  
/* (non-Javadoc) sRil>6QR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {1HB!@%,(  
*/ hd=j56P5P  
public void sort(int[] data) { 0XQ-   
int[] stack=new int[MAX_STACK_SIZE]; bfc.rZ  
lvig>0:M  
int top=-1; s_` V*`n&  
int pivot; D;yd{]<  
int pivotIndex,l,r; A@ { !:_55  
I9s$bRbT  
stack[++top]=0; "x.88,T6  
stack[++top]=data.length-1; l2M/ ,@G  
6NKF'zh  
while(top>0){ <W9) Bq4  
int j=stack[top--]; 4jD\]Q="1  
int i=stack[top--]; o[H\{a>  
YmA) @1@U  
pivotIndex=(i+j)/2; IM|Se4;x  
pivot=data[pivotIndex]; )da:&F -  
8s&2gn1  
SortUtil.swap(data,pivotIndex,j); \ 6jF{  
T7X!#j" \  
file://partition %L.rcbg:<c  
l=i-1; 'NRN_c9  
r=j; TyyRj4>  
do{ rGAFp,}-f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4I+.^7d  
SortUtil.swap(data,l,r); \Z8Y(]6*  
} &?fvt  
while(l SortUtil.swap(data,l,r); =`ywd]\7  
SortUtil.swap(data,l,j); .M`LUb"!  
>dcqPNDg1^  
if((l-i)>THRESHOLD){ Y# .6d  
stack[++top]=i; la1D2 lM  
stack[++top]=l-1; b <1k$0J6  
} na%DF@Rt#  
if((j-l)>THRESHOLD){ uoryxKRjc~  
stack[++top]=l+1; :k-(%E](  
stack[++top]=j; }"sZ)FE  
} 4X()D {uR  
4!I;U>b b  
} $69ef[b  
file://new InsertSort().sort(data); k=7+JI"J  
insertSort(data); 8|*=p4_fn  
} e%B;8)7  
/** "I7 Sed7  
* @param data AXQG  
*/ `H^?jX>7  
private void insertSort(int[] data) { ",pN.<F9O  
int temp; E&RiEhuv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {eQ')f  
} Zl:Z31  
} Uc?4!{$X  
} ?)60JWOJ1  
RH"&B`  
} W{{{c2 .  
X-Q;4M-CJ  
归并排序: :kaHvf  
knPo"GQW  
package org.rut.util.algorithm.support; ?puZqVu5  
fG^#G/n2  
import org.rut.util.algorithm.SortUtil; 4)IRm2G  
}+" N '  
/** (16U]s  
* @author treeroot M<s Y_<z  
* @since 2006-2-2 jDaWmy<ha  
* @version 1.0 pFUW7jE  
*/ S]P80|!|  
public class MergeSort implements SortUtil.Sort{ )(Z)yz  
H=f'nm]dQ  
/* (non-Javadoc) tSZd0G<A<o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ga%x(1U[&  
*/ X53TFRxnT  
public void sort(int[] data) { YTtuR`  
int[] temp=new int[data.length]; JLZ[sWP='  
mergeSort(data,temp,0,data.length-1); z@_ 9.n]  
} pO;BX5(x  
w'Cn3b)`  
private void mergeSort(int[] data,int[] temp,int l,int r){ @ k`^Z5tN  
int mid=(l+r)/2; a9OJC4\  
if(l==r) return ; 1VH$l(7IQ  
mergeSort(data,temp,l,mid); <K#]1xCA  
mergeSort(data,temp,mid+1,r); 5:=ECtKi  
for(int i=l;i<=r;i++){ CQLh;W`Dc  
temp=data; 1o;*`  
}  F%}0q&  
int i1=l; icX$<lD  
int i2=mid+1; 0Q]p#;  
for(int cur=l;cur<=r;cur++){ +h*.%P}o  
if(i1==mid+1) NWGSUUa  
data[cur]=temp[i2++]; zeXMi:X  
else if(i2>r) Fe4QWB6\U  
data[cur]=temp[i1++]; ${/"u3a_  
else if(temp[i1] data[cur]=temp[i1++]; ddR_+B*H  
else 4s Vr]p`  
data[cur]=temp[i2++]; m-~eCFc  
} ,r,~1oV<"  
} )>! IY Q  
=uYz4IDB  
} {GaQV-t  
+Rtz`V1d  
改进后的归并排序: f[@M  
O$><E8q  
package org.rut.util.algorithm.support; G]Jchg <  
!`BK%m\8  
import org.rut.util.algorithm.SortUtil; _t:l:x.;T  
$ljgFmR_  
/** u% ^Lu.l_c  
* @author treeroot T4W"!4[  
* @since 2006-2-2 j15TavjGh  
* @version 1.0 :Rs% (Z  
*/ Kb_R "b3v  
public class ImprovedMergeSort implements SortUtil.Sort { cU y,q]PO  
=jik33QV<  
private static final int THRESHOLD = 10; JlR'w]d M,  
ez2 gy"  
/* 62BJ;/ ]  
* (non-Javadoc) oCLs"L-r{  
* @-z#vJ5Qe{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  c|N!ZYJI  
*/  s*gyk  
public void sort(int[] data) { u_aln[oIv  
int[] temp=new int[data.length]; I#Q Tmg.  
mergeSort(data,temp,0,data.length-1); Nk-biD/J  
} x M1>kbo|  
Z\=].[,w4  
private void mergeSort(int[] data, int[] temp, int l, int r) { Nxu 10  
int i, j, k; 9o.WJ   
int mid = (l + r) / 2; %6`{KT?  
if (l == r) e75 k-  
return; 9Z0(e!b4S  
if ((mid - l) >= THRESHOLD) \/jr0):  
mergeSort(data, temp, l, mid); t)o #!)|  
else x@+m _y  
insertSort(data, l, mid - l + 1); u7u8cVF  
if ((r - mid) > THRESHOLD) hFw\uETu  
mergeSort(data, temp, mid + 1, r); R v9?<]  
else XA~Rn>7&H  
insertSort(data, mid + 1, r - mid); Q dKxuG  
&* 4uji  
for (i = l; i <= mid; i++) { NyD[9R?  
temp = data; ZdEeY|j  
} LxkToO{  
for (j = 1; j <= r - mid; j++) { %zHNX4  
temp[r - j + 1] = data[j + mid]; h<.G^c)  
} ,\;;1Kq  
int a = temp[l]; 2}u hPW+  
int b = temp[r]; +dm&XW >  
for (i = l, j = r, k = l; k <= r; k++) { c'_-jdi`>_  
if (a < b) { bz_Zk  
data[k] = temp[i++]; |U?5% L  
a = temp; l=5(5\  
} else { :Ia3yi#  
data[k] = temp[j--]; FxSBxz<N-A  
b = temp[j]; ~V?O%1)k?\  
} )2}{fFa%  
} h0NM5   
} "U34D1I )#  
]Ff"o7gT  
/** SMaC{RPQ  
* @param data CjM+%l0MW  
* @param l Qi|jL*mj&  
* @param i Vg/{;uLAe  
*/ s+>""yi  
private void insertSort(int[] data, int start, int len) { cbl@V 1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y3$i?}?A  
} 38! $9)  
} @L^2VVWk^  
} B:5( sK  
} >2`)S{pBD  
%y33evX/B  
堆排序: i]*W t8~!  
cD^n}'ej  
package org.rut.util.algorithm.support; xL4qt=  
aksyr$d0V<  
import org.rut.util.algorithm.SortUtil; oD_je~b)  
au2 ieZZ[  
/** 9@Yk8  
* @author treeroot _n_lO8mK  
* @since 2006-2-2 >/1N#S#9  
* @version 1.0 r_T\%  
*/ d<. hkNN  
public class HeapSort implements SortUtil.Sort{ `@ULG>   
E\#hcvP  
/* (non-Javadoc) KDgJ~T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aOfL;I  
*/ D61CO-E(D  
public void sort(int[] data) { OwV>`BIwns  
MaxHeap h=new MaxHeap(); p*F&G=ZE  
h.init(data); lDO9GNz$  
for(int i=0;i h.remove(); q5?g/-_0[  
System.arraycopy(h.queue,1,data,0,data.length); %d*k3 f }  
} 2hAu~#X  
d7qY(!&  
private static class MaxHeap{ ,rc5r3  
WM NcPHcj  
void init(int[] data){ Y8`4K*58%  
this.queue=new int[data.length+1]; E~_2Jf\U  
for(int i=0;i queue[++size]=data; 64>E|w  
fixUp(size); jZS6f*$  
}  Ek(. ["  
} _KC)f'Cx  
5j1}?0v_  
private int size=0; z:bxnM2\  
EcrM`E#kaZ  
private int[] queue; iU{bPyz ,  
&Qy_= -]  
public int get() { 9r@r\-  
return queue[1]; Q^/66"Z:Z  
} q.FgX  
{o< 4 ^  
public void remove() { mZ3i#a4  
SortUtil.swap(queue,1,size--); g<{/mxv/  
fixDown(1); +Sv`23G@  
} \ }>1$kH;  
file://fixdown gBUtv|(@>[  
private void fixDown(int k) { #K'3` dpL  
int j; y562g`"U  
while ((j = k << 1) <= size) { L)&?$V  
if (j < size %26amp;%26amp; queue[j] j++; PmyS6a@  
if (queue[k]>queue[j]) file://不用交换 &e@2zfl7  
break; *5]fjh{  
SortUtil.swap(queue,j,k); +Tc<|-qQn  
k = j; 7lY&/-V  
} HT)b3Ws~M8  
} ;H /*%2  
private void fixUp(int k) { 7g}4gX's  
while (k > 1) { [tym~ZZ]_m  
int j = k >> 1; &10vdAnBRC  
if (queue[j]>queue[k]) X+;Ivx  
break; %@3AA<  
SortUtil.swap(queue,j,k); .9+"rK}u  
k = j; Brr{iBz*"  
} v>YdPQky  
} GLQ1rT  
"pdmz+k8S  
} 1VL!0H  
YlwCl4hq  
} csz/[*  
;0O3b  
SortUtil: trnjOm  
.pNWpWL.  
package org.rut.util.algorithm; z kQV$n{  
E ;65kZ  
import org.rut.util.algorithm.support.BubbleSort; \k/ N/&;  
import org.rut.util.algorithm.support.HeapSort; W_9-JM(r  
import org.rut.util.algorithm.support.ImprovedMergeSort; 5p}Y6Lc\j  
import org.rut.util.algorithm.support.ImprovedQuickSort; x$d3 fsEE  
import org.rut.util.algorithm.support.InsertSort; 1%Xwk2l,8b  
import org.rut.util.algorithm.support.MergeSort; ,@jRe&6  
import org.rut.util.algorithm.support.QuickSort; &$tBD@7  
import org.rut.util.algorithm.support.SelectionSort; W76K/A<h>  
import org.rut.util.algorithm.support.ShellSort; QCQku\GLV  
'; ,DgR;'  
/** _*h,,Q  
* @author treeroot N ncur]  
* @since 2006-2-2 0b+OB pqN  
* @version 1.0 .^j #gE&B  
*/ 1OK,r`   
public class SortUtil { vJVL%,7  
public final static int INSERT = 1; _"_ W KlN  
public final static int BUBBLE = 2; 5n! V^ !  
public final static int SELECTION = 3; #XR<}OYcL  
public final static int SHELL = 4; CwZ+P n0  
public final static int QUICK = 5; tp<uN~rTgh  
public final static int IMPROVED_QUICK = 6; h 92\1,  
public final static int MERGE = 7; u[9i>7}9  
public final static int IMPROVED_MERGE = 8; [~9rp]<  
public final static int HEAP = 9; {.pR$]6B"+  
=G3O7\KmH  
public static void sort(int[] data) { ?F]Yebp^  
sort(data, IMPROVED_QUICK); &cztUM(  
} 8Kt_irD  
private static String[] name={ OY7\*wc:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {E1g+><  
}; i*B@#;;F  
*t J+!1  
private static Sort[] impl=new Sort[]{ BTjfzfO"  
new InsertSort(), </F@ 5*  
new BubbleSort(), 6wC|/J^  
new SelectionSort(), DqyJ]}|  
new ShellSort(), Z3?,r[   
new QuickSort(), E;$)Oz  
new ImprovedQuickSort(), .r[b!o^VR  
new MergeSort(), yzr>]"o  
new ImprovedMergeSort(), }MAQhXI^O|  
new HeapSort() |P7c {  
}; s$`g%H>  
JR{3n*  
public static String toString(int algorithm){ Z*S 9pkWcF  
return name[algorithm-1]; IB:eyq-+  
} d2lOx|jt  
N|hNh$J[  
public static void sort(int[] data, int algorithm) { hgMh]4wN*  
impl[algorithm-1].sort(data); N<o3pX2i]  
} ofbNg_K>  
j~,7JJ (y  
public static interface Sort { wjh[}rTV*  
public void sort(int[] data); 54~`8f  
} hNBv|&D#  
{wMw$Fvf  
public static void swap(int[] data, int i, int j) { @s!9 T  
int temp = data; ,oT?-PC$z  
data = data[j]; :[#HP66[O5  
data[j] = temp; dz5a! e [  
} w{?nX6a@p  
} ((7~o?Vbg  
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