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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。 |[ )e5Xhd  
插入排序: ]gw[ ~  
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package org.rut.util.algorithm.support; Wq+a5[3"  
e #5LBSP  
import org.rut.util.algorithm.SortUtil; ~YH'&L.O  
/** lWR".  
* @author treeroot KkIgyLM  
* @since 2006-2-2 PXx:JZsju  
* @version 1.0 M zRliH8e  
*/ Fad.!%[  
public class InsertSort implements SortUtil.Sort{ x}tg/` .=z  
 s-Z<  
/* (non-Javadoc) z>6hK:27  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '#oNOU  
*/ LwI A4$d  
public void sort(int[] data) { r'bPSu,  
int temp; DO^ J=e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~0 PR>QJ  
} ;h-W&i7  
}  EL$"/ptE  
} Z w`9B  
\{@n >Mh  
} 8E+]yB"  
*B3 4  
冒泡排序: "8-;Dq'+  
k vQ] }`a  
package org.rut.util.algorithm.support; n | M~C\*  
=-m"y~{>3  
import org.rut.util.algorithm.SortUtil; O u-/dE%  
o?O> pK  
/** l(<=JUO;  
* @author treeroot  n$u@v(I  
* @since 2006-2-2 l} =@9A@  
* @version 1.0 b)(rlX  
*/ &<>NP?j}  
public class BubbleSort implements SortUtil.Sort{ e*!0|#-  
F*, e,s  
/* (non-Javadoc) v.q`1D1=t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QB"Tlw(  
*/ 5{Oq* |  
public void sort(int[] data) { 2gM/".|{  
int temp; +I>V9%%vW_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ w2(pgWed  
if(data[j] SortUtil.swap(data,j,j-1); )L0NX^jW;  
} 1KMSBLx  
} 9{cpxJ  
} b$JrLZs$_  
} B'D\l\w  
Q{:=z6&  
} >>b <)?3Rv  
:AYhBhitC  
选择排序: uz /Wbc>y  
#7r13$>!  
package org.rut.util.algorithm.support; t[4V1:  
=MjkD)l  
import org.rut.util.algorithm.SortUtil; t}wwRWo2?f  
t8ZzBD!dP  
/** 5XzN%<_h9  
* @author treeroot M/J?$j  
* @since 2006-2-2 *w`_(X f  
* @version 1.0 @QO^3%b8  
*/ R^?9 V=Y<T  
public class SelectionSort implements SortUtil.Sort { A:4?Jd>  
|r+w(TG  
/* BS|$-i5L  
* (non-Javadoc) Qv}TUX4  
* Kn*LwWne  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j_{f(.5  
*/ [C`LKA$t  
public void sort(int[] data) { =oT4!OUf  
int temp; +'0V6 \y  
for (int i = 0; i < data.length; i++) { <  UD90}  
int lowIndex = i; V.-cm51I  
for (int j = data.length - 1; j > i; j--) { :ggXVwpe  
if (data[j] < data[lowIndex]) { 5q;c=oRUj  
lowIndex = j; D%*Ryg  
} _A~>?gJ;,  
} f=IF_|@^S  
SortUtil.swap(data,i,lowIndex); HJ_8 `( '  
} ~5>k_\ G8  
} adWH';Q:  
-)Hc^'.  
} Jbn^G7vH<6  
q&2L@l3A  
Shell排序: <8ih >s(C  
sLd%m+*p  
package org.rut.util.algorithm.support; AD~_n ^  
0[f[6mm%m  
import org.rut.util.algorithm.SortUtil; INEE 37%  
wv  
/** u&Yd+');  
* @author treeroot *Ksk1T+>  
* @since 2006-2-2 kjF4c6v  
* @version 1.0 *RmD%[f  
*/ X#o<))  
public class ShellSort implements SortUtil.Sort{ H6hhU'Kxf8  
AO,^v+ $  
/* (non-Javadoc) a Z8f>t1Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wUfm)Q#  
*/ G2&,R{L6w  
public void sort(int[] data) { ?_d3|]N  
for(int i=data.length/2;i>2;i/=2){ L;=3n[^x  
for(int j=0;j insertSort(data,j,i); E BSjU8  
} u{cb[M  
} p2 !w86 F  
insertSort(data,0,1); 8Oa+,?<0x  
} X!6$<8+1OV  
%<|cWYM="z  
/** 6OR)97  
* @param data 9&zQ 5L>  
* @param j OQVo4yl"  
* @param i VAp 1{  
*/ a@-bw4S D  
private void insertSort(int[] data, int start, int inc) { MeYu  
int temp; }:S}jo7  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Bkg./iP5x  
} nG$+9}\UlP  
} /m4Y87  
} Z= =c3~  
m95] z18T'  
} 2Vs+8/  
L) UCVm  
快速排序: </b_Rar  
8Y_lQfJa  
package org.rut.util.algorithm.support; Gr'|nR8  
`~D{]'j  
import org.rut.util.algorithm.SortUtil; 8@ f+?g*i  
$wbIe"|  
/** ANfy+@  
* @author treeroot *J{E1])<a  
* @since 2006-2-2 g9Ty%|Q7(  
* @version 1.0 ^O}J',Fm%f  
*/ PAH#yM2Ic  
public class QuickSort implements SortUtil.Sort{ 1Beh&pl^  
7eW6$$ju,N  
/* (non-Javadoc) 5=b6B=\*~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zy|u5J  
*/ \YHl(  
public void sort(int[] data) { >Bu _NoM  
quickSort(data,0,data.length-1); ""m/?TZq'  
} !}sF#  
private void quickSort(int[] data,int i,int j){ DcG=u24Xy!  
int pivotIndex=(i+j)/2; 24sQon  
file://swap 6R*eJICN  
SortUtil.swap(data,pivotIndex,j); L* ScSxw  
~S$ex,~  
int k=partition(data,i-1,j,data[j]); etQS&YzC  
SortUtil.swap(data,k,j); DR]4Tcz#  
if((k-i)>1) quickSort(data,i,k-1); sXtt$HID=  
if((j-k)>1) quickSort(data,k+1,j); &*oljGt8  
m}]QP\  
} $ab{GxmX'4  
/** #V$sb1u  
* @param data BU7QK_zT:  
* @param i FEX67A8 /;  
* @param j Cq3Au%7  
* @return MO|Pv j~[  
*/ MP.ye|i4Q  
private int partition(int[] data, int l, int r,int pivot) { rV2>;FG  
do{ F5OQM?J  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )@] W=  
SortUtil.swap(data,l,r); :&LV^ A  
} zy.v[Y1!  
while(l SortUtil.swap(data,l,r); ~f( #S*Ic  
return l; {Z1-B60P  
}  )\kNufP  
*}_i[6_\E  
} rrq7UJ;  
(`u+(M!^  
改进后的快速排序: r{_1M>F D!  
;iJ}[HUo  
package org.rut.util.algorithm.support; wM#l`I  
NRk^Z)  
import org.rut.util.algorithm.SortUtil; OAEa+V  
R/ x-$VJ  
/** QUg<~q)Oq  
* @author treeroot j 20m Z  
* @since 2006-2-2 ABL5T-*]  
* @version 1.0 dj}P|v/;z  
*/ wRq f'  
public class ImprovedQuickSort implements SortUtil.Sort { )bpdj,  
Ih;D-^RQ  
private static int MAX_STACK_SIZE=4096; u'gsIuRJ  
private static int THRESHOLD=10; {UF|-VaG  
/* (non-Javadoc) }.=@^-JBA5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Uo[`AzD3  
*/ ZmI#-[/  
public void sort(int[] data) { 2P{! n#"  
int[] stack=new int[MAX_STACK_SIZE]; A2Iqn5  
AboRuHQ  
int top=-1; o[S Mt  
int pivot; #vViEBVeN  
int pivotIndex,l,r; zE7)4!  
e`)zR'As  
stack[++top]=0; QqcAmp  
stack[++top]=data.length-1; >R.!Qze\G  
1-R4A7+3  
while(top>0){ n:Dr< q .  
int j=stack[top--]; w"A>mEex<  
int i=stack[top--]; 5p/.( |b,  
eO{2rV45O  
pivotIndex=(i+j)/2; "tj]mij2)G  
pivot=data[pivotIndex]; Hq,N OP  
[kPl7[OL  
SortUtil.swap(data,pivotIndex,j); 7'@~TM  
$us7fuKE  
file://partition ("=24R=a  
l=i-1; HLh]*tQG  
r=j; "<"s&ws;k  
do{ ,{Z!T5 |  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); V~t; J  
SortUtil.swap(data,l,r); Su'l &]  
} cWI7];/d;  
while(l SortUtil.swap(data,l,r); 7}tXF  
SortUtil.swap(data,l,j); 2}5@: cwR+  
X"T)X#:)  
if((l-i)>THRESHOLD){ (]5gYi  
stack[++top]=i; / 6DW+!  
stack[++top]=l-1; |Lc.XxBkc  
} B5]nP .R  
if((j-l)>THRESHOLD){ w}x&wWM  
stack[++top]=l+1; cn'r BY  
stack[++top]=j; -?ebkHe  
} *bi;mQ  
{65_k  
} 0EC/l OS  
file://new InsertSort().sort(data); `,FhCT5  
insertSort(data); SqoO"(1x  
} `QT9W-0e^  
/** \Zn~y--Z  
* @param data P_M!h~  
*/ ")W5`9  
private void insertSort(int[] data) { #?bOAWAwLh  
int temp; DF"*[]^[  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }]j#C  
} Kq:vTz&<  
} No]#RvEd3  
} Bo/i =/7%  
i6E~]&~.v  
} YKa9]Q  
gy/bA  
归并排序: EOf*1/Ih  
7nbaR~ZV  
package org.rut.util.algorithm.support; 1( ]{tF  
Kp/l2?J"  
import org.rut.util.algorithm.SortUtil; KocNJ TB  
>+*lG>!z  
/** ,h.hgyt  
* @author treeroot < z{,@Z}  
* @since 2006-2-2 }kk[lvhJ  
* @version 1.0 ZZW%6-B  
*/ f7 zGz  
public class MergeSort implements SortUtil.Sort{ !]#;'  
/Fp@j/50  
/* (non-Javadoc) |TuFx=~5v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R"e533  
*/  C0j`H(  
public void sort(int[] data) { *0%G`Q  
int[] temp=new int[data.length]; nkz^^q`5l7  
mergeSort(data,temp,0,data.length-1); 6am<V]Hw0F  
} 'tq4-11xB  
4J2C# Cs  
private void mergeSort(int[] data,int[] temp,int l,int r){ \xOv9(  
int mid=(l+r)/2; '_o(I  
if(l==r) return ; o>\epQt~/p  
mergeSort(data,temp,l,mid); <7J\8JR&=  
mergeSort(data,temp,mid+1,r); +K"d\<  
for(int i=l;i<=r;i++){ lf2(h4[1R  
temp=data; lkgB,cflpi  
} 6 kAXE\T  
int i1=l; ?) VBkA5j  
int i2=mid+1; \v([,tiW%  
for(int cur=l;cur<=r;cur++){ 4G=KyRKh  
if(i1==mid+1) I>spJ5ls  
data[cur]=temp[i2++]; );ZxKGjc4  
else if(i2>r) n7'X.=o7  
data[cur]=temp[i1++]; 9AZpvQ  
else if(temp[i1] data[cur]=temp[i1++]; GP=&S|hi  
else rs:a^W5t  
data[cur]=temp[i2++]; k!sk\~>YO  
} -<aN$O  
} .T^e8  
+ Scw;gO  
} ~ ^) 4*@i6  
[xg& `x9,.  
改进后的归并排序: xX{gm'3UYa  
6?KJ"Ai9  
package org.rut.util.algorithm.support; )zq sn  
z<n&P7k5j  
import org.rut.util.algorithm.SortUtil; $rmfE  
UU]a).rz  
/** DbvKpM H  
* @author treeroot 0]`%i G|  
* @since 2006-2-2 _tpqo>  
* @version 1.0 Fs;_z9ej-u  
*/ hZLwg7X!   
public class ImprovedMergeSort implements SortUtil.Sort { e'1}5Ky  
TTzvH;S  
private static final int THRESHOLD = 10; 0?8{q{ o+  
2 1]8 7$  
/* W\JwEb9Y  
* (non-Javadoc) [5TGCGxP{  
* hQ}B?'>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TSAVXng  
*/ U<mFwJ C]  
public void sort(int[] data) { mA>u6Rlc  
int[] temp=new int[data.length]; *S=zJyAO  
mergeSort(data,temp,0,data.length-1); khtYn.eaL  
} 8.4+4Vxh   
W=@]YI  
private void mergeSort(int[] data, int[] temp, int l, int r) { QAmb_:^"d  
int i, j, k; *&lNzz5&  
int mid = (l + r) / 2; tgB\;nbB  
if (l == r) Kn+m9  
return; o$+"{3svw?  
if ((mid - l) >= THRESHOLD) ^+zhzfJ  
mergeSort(data, temp, l, mid); 6Cd% @Q2cr  
else Foc) u~  
insertSort(data, l, mid - l + 1); U k*HRudt  
if ((r - mid) > THRESHOLD) V8{5 y <Y>  
mergeSort(data, temp, mid + 1, r); j=~c( B  
else ]Uee!-dZ  
insertSort(data, mid + 1, r - mid); 'CSIC8M<j  
|T@\ -8Ok  
for (i = l; i <= mid; i++) { [exIK  
temp = data; 8rx"D`{|  
} vkQkU,q  
for (j = 1; j <= r - mid; j++) { yC]X&1,:z  
temp[r - j + 1] = data[j + mid]; t^zmv PDK  
} Ysz&/ry  
int a = temp[l]; V)8d1S  
int b = temp[r]; "=97:H{!  
for (i = l, j = r, k = l; k <= r; k++) { <i(<|/ $  
if (a < b) { 2po>%Cp  
data[k] = temp[i++]; %t:pG}A>:C  
a = temp; b7_uT`<  
} else { -1 Ok_h"  
data[k] = temp[j--]; Zw`vPvb!  
b = temp[j]; ZfYva(zP{Q  
} "Wz#<! .r  
} P:gN"f6  
}  8~>5k  
?-`G0(  
/** oSOO5dk:z  
* @param data dE[nPtstb  
* @param l Y]SX2kk(2  
* @param i ?4 fXCb]7  
*/ 8- U1Y  
private void insertSort(int[] data, int start, int len) { XH?}0D(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `Y~EL?  
} 3 0fsVwE2  
} q{?ku!cL  
} Gw5j6  
} lj4D: >Ov  
5B lptC  
堆排序: xA-u%Vf7@  
nf7l}^/UE  
package org.rut.util.algorithm.support; dDAI fe2y  
'F- wC!  
import org.rut.util.algorithm.SortUtil; 5zqlK-$  
v&NC` dVR  
/** Gqz<;y  
* @author treeroot ,(6U3W*bu  
* @since 2006-2-2 wK_I"  
* @version 1.0 %6vf~oG  
*/ 8d90B9  
public class HeapSort implements SortUtil.Sort{ 1,tM  
i+2fWi6Z+  
/* (non-Javadoc) $ {iV]Xt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }T}9AQ}|  
*/ YM idSfi  
public void sort(int[] data) { \UdHN=A&  
MaxHeap h=new MaxHeap(); )L*6xTa~  
h.init(data); Y 7a<3>  
for(int i=0;i h.remove(); *<PQp   
System.arraycopy(h.queue,1,data,0,data.length); G/2| *H  
} Yy$GfjJtL]  
>>**n9\q  
private static class MaxHeap{ H>x(c|ZBp  
1@j0kTJ~m  
void init(int[] data){ ]pZxbs&Vb  
this.queue=new int[data.length+1]; '8Q:}{  
for(int i=0;i queue[++size]=data; [/s^(2%  
fixUp(size); \BV$p2m5-  
} F ;o ^.  
} h@5mVTb}i  
SIBNU3;DL  
private int size=0; x*G-?Xza)  
L8&$o2+07r  
private int[] queue; x:h0/f  
BM(8+Wj  
public int get() { _%M5 T  
return queue[1]; =@ '>|-w|  
} 6^vMJ82U  
Oie0cz:>:  
public void remove() { &i&k 4  
SortUtil.swap(queue,1,size--); c~@Z  
fixDown(1); _B@=fY(g!  
} \GL!x 7s1A  
file://fixdown nN=o/zd  
private void fixDown(int k) { 2VrO8q(  
int j; @WV}VKm  
while ((j = k << 1) <= size) { td:GZ %  
if (j < size %26amp;%26amp; queue[j] j++; U>bmCK2  
if (queue[k]>queue[j]) file://不用交换 =l  %  
break; @a08*"lbp  
SortUtil.swap(queue,j,k); 5J d7<AO_  
k = j; %SG**7  
} MZyzc{c,  
} xWwQm'I2}  
private void fixUp(int k) { u&q RK>wLa  
while (k > 1) { 1:7 uS.  
int j = k >> 1; $\S;f"IM.  
if (queue[j]>queue[k]) qSB]Zm<  
break; ze+_iQ5  
SortUtil.swap(queue,j,k); *SW.K{{  
k = j; pzX684  
} :[;]6;  
} N7S?m@  
%\5 wHT+)  
} k<aKT?Ek>  
{u3eel  
} ^hG Y,\K9  
BoJYP  
SortUtil: aR3R,6ec  
v!\\aG/  
package org.rut.util.algorithm; rTBrl[&,q'  
AOT +4*)%  
import org.rut.util.algorithm.support.BubbleSort; {`2R<O  
import org.rut.util.algorithm.support.HeapSort; f L @rv  
import org.rut.util.algorithm.support.ImprovedMergeSort; I%.96V  
import org.rut.util.algorithm.support.ImprovedQuickSort; gmU_# J%~  
import org.rut.util.algorithm.support.InsertSort; 9ghZL Q  
import org.rut.util.algorithm.support.MergeSort; .~ )[>  
import org.rut.util.algorithm.support.QuickSort; wzLR]<6G  
import org.rut.util.algorithm.support.SelectionSort; @x9DV{j)V  
import org.rut.util.algorithm.support.ShellSort; ?^F*M#%?  
[@SLt$9"  
/** 4'&j<Ah[#  
* @author treeroot oV4+w_rrLc  
* @since 2006-2-2 $~h\8  
* @version 1.0 RYU(z;+0p  
*/ fZoV\a6Kj  
public class SortUtil { U}H2!et&,)  
public final static int INSERT = 1; 1!u}~E_   
public final static int BUBBLE = 2; ( K5w0  
public final static int SELECTION = 3; e-$ U .cx  
public final static int SHELL = 4; Vb${Oy+  
public final static int QUICK = 5; : K%{?y  
public final static int IMPROVED_QUICK = 6; Yzr RnVr  
public final static int MERGE = 7; 'qGKS:8  
public final static int IMPROVED_MERGE = 8; l?>sLKo9  
public final static int HEAP = 9; ;aZ$qgN*Y  
R<}WNZl  
public static void sort(int[] data) { TW 2OT }  
sort(data, IMPROVED_QUICK); zzf;3S?  
} ;DMv?-H  
private static String[] name={ wzX 1!?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Qt+|s&HGt  
}; "][MCVYP  
@agW{%R:.  
private static Sort[] impl=new Sort[]{ 44H#8kV  
new InsertSort(), X#l]%IrW!  
new BubbleSort(), ^i3~i?\,P  
new SelectionSort(), f/spJ<B).4  
new ShellSort(), _xgF?#  
new QuickSort(), t;P%&:"@M  
new ImprovedQuickSort(), !olvP*c"  
new MergeSort(), f wN  
new ImprovedMergeSort(), %9z N U  
new HeapSort() R[eQ}7;+  
}; al/3$0#U  
a6K1-SR^6)  
public static String toString(int algorithm){ sb 3l4(8g  
return name[algorithm-1]; 19)fN-0Z  
} nSH A,c  
:t &ib}v  
public static void sort(int[] data, int algorithm) { SvUC8y  
impl[algorithm-1].sort(data); I!(.tu6u6c  
} ;Qpp`  
=}S*]Me5  
public static interface Sort { n\v\<mVTb7  
public void sort(int[] data); x`'2oz=,F4  
} ([loWr}QR  
ei 1(A  
public static void swap(int[] data, int i, int j) { 28l",j)S  
int temp = data; >G`=8Ku  
data = data[j]; Nrl&"IK|J  
data[j] = temp; 3c5=>'^F  
} WNkAI9B  
} h.Cr;w,2R  
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