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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。 7iC *Pr  
插入排序: 8 }'|]JK  
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package org.rut.util.algorithm.support; _,h@:Xij  
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import org.rut.util.algorithm.SortUtil; n_K~ vD  
/**   \J^  
* @author treeroot 2+8#H.  
* @since 2006-2-2 y9Y1PH7G  
* @version 1.0 ]bCq=6ZKR  
*/ ] 7;f?+  
public class InsertSort implements SortUtil.Sort{ l":c  
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/* (non-Javadoc) 5R MS(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $e%2t^ i.g  
*/ |V[9}E: h  
public void sort(int[] data) { $.6K!x{(  
int temp; ihL/n  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0 5\dl  
} TrVWv  
} ~IVd vm7  
} =x#FbvV  
Y[ reD  
} 6V9doP]i  
&`|:L(+  
冒泡排序: n ?[/ufl  
Zzua17  
package org.rut.util.algorithm.support; &6 -k#r  
X##1! ad  
import org.rut.util.algorithm.SortUtil; !SOrCMHx  
eZhPu'id\s  
/** dP$GThGl  
* @author treeroot ?q2j3e[>  
* @since 2006-2-2 oj.A,Fh  
* @version 1.0 x90*yaw>h  
*/ :)f7A7:;  
public class BubbleSort implements SortUtil.Sort{ pfuW  
Lr;(xw\['  
/* (non-Javadoc) z~6y+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Lju7,/UD  
*/ %bXx!x8(  
public void sort(int[] data) { ~0"p*?^  
int temp; 4] > ]-b  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `WEZ"5n  
if(data[j] SortUtil.swap(data,j,j-1); BI[JATZG  
} ~i'Nqe_  
} ;Z[]{SQ  
} V5}nOGV9  
} V2Q$g^X'  
SD\= m/W  
} /{2*WI;  
t5k!W7C  
选择排序: %3;Fgky  
dth&?/MERL  
package org.rut.util.algorithm.support; 5@Bu99`  
]36sZ *  
import org.rut.util.algorithm.SortUtil; f},oj4P\  
bZ _mYyBh  
/** <<A`aU^fX  
* @author treeroot Wx'Kp+9'  
* @since 2006-2-2 jd`},X/  
* @version 1.0 tL SN`6[:  
*/ xZ5M/YSyG  
public class SelectionSort implements SortUtil.Sort { wle@v Cmr  
W|k0R4K]]  
/* ~%u|[$  
* (non-Javadoc) $S*4r&8ZD  
* hlZ@Dq%f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UAF<m1  
*/ $$Vt7"F  
public void sort(int[] data) { " }gVAAvc7  
int temp; Nb2Qp K  
for (int i = 0; i < data.length; i++) { Rr(* aC2P  
int lowIndex = i; +!-~yf#RE  
for (int j = data.length - 1; j > i; j--) { %m5Q"4O  
if (data[j] < data[lowIndex]) { {MAQ/5  
lowIndex = j; ;32#t[i b  
} Ax3W2s  
} `7aDEzmJ  
SortUtil.swap(data,i,lowIndex); y]..= z_ql  
} tHD  
} `;,Pb&W~  
p_*M:P1Ma4  
} ~d{.ng 4K  
f"#m=_Xm  
Shell排序: M/PFPJ >`  
9n]|PEoAB  
package org.rut.util.algorithm.support; p5=|Y^g !  
?8dVH2W.  
import org.rut.util.algorithm.SortUtil; sGDV]~E  
j;yf8Nf  
/** &MR/6"/s  
* @author treeroot z9 u$~  
* @since 2006-2-2 D;GD<zC]  
* @version 1.0 xieP "6  
*/ (LvS :?T}  
public class ShellSort implements SortUtil.Sort{ $ZPX]2D4B#  
;wiao(t>4N  
/* (non-Javadoc) `?*%$>W#"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I|oT0y &  
*/ 31^cz*V  
public void sort(int[] data) { <q)4la  
for(int i=data.length/2;i>2;i/=2){ 6Q4X 6U:WB  
for(int j=0;j insertSort(data,j,i); L(;WxHL  
}  , iNv'  
} JN/UUfj  
insertSort(data,0,1); ?q`0ZuAg\<  
} \2[<XG(^  
Z!d7&T}  
/** =+5,B\~q@C  
* @param data ,?UM;^  
* @param j 75!9FqMZ}  
* @param i -${DW^txMZ  
*/ +@9gkPQQ-@  
private void insertSort(int[] data, int start, int inc) { {P9J8@D  
int temp; e/_C  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); w"m+~).U  
} ivO/;)=t  
} hjZ}C+=O  
} 9CGNn+~YI  
QZAB=rR  
} 9A,Z|q/z5  
dBsX*}C  
快速排序: h[KvhbD3   
 v7  
package org.rut.util.algorithm.support; RT/o$$  
oq/G`{`\  
import org.rut.util.algorithm.SortUtil; gC%G;-gm  
Agh`]XQ2  
/** 4nfu6Dq  
* @author treeroot aIy*pmpD=  
* @since 2006-2-2 kB:Uu }(=N  
* @version 1.0 S 6,4PP  
*/ HysS_/t~  
public class QuickSort implements SortUtil.Sort{ Z#d&|5Xj  
?rVy2!  
/* (non-Javadoc) \mM<\-'p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |rw%FM{F  
*/ N(6|yZ<J3M  
public void sort(int[] data) { 0X8t>#uF  
quickSort(data,0,data.length-1); gyHHoZc3  
} :nHKl  
private void quickSort(int[] data,int i,int j){ /StTb,  
int pivotIndex=(i+j)/2; 5FVndMM#y  
file://swap :%&Q-kk4!  
SortUtil.swap(data,pivotIndex,j); TQX)?^Ft  
B 3m_D"?  
int k=partition(data,i-1,j,data[j]);  @4d)R  
SortUtil.swap(data,k,j); 0l*]L`]L#  
if((k-i)>1) quickSort(data,i,k-1); p?[Tm*r  
if((j-k)>1) quickSort(data,k+1,j); ( GnuWc\p  
`J<*9dq%  
} XLk<*0t p  
/** 2I3h M D0  
* @param data \?>Hu v  
* @param i @53k8  
* @param j 'X).y1'  
* @return 0<"k8 k@J  
*/ {%)s.5Pfw  
private int partition(int[] data, int l, int r,int pivot) { [%~ :@m  
do{  UsGa  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ?SQE5Z  
SortUtil.swap(data,l,r); |@?%Ct  
} !?f5>Bl  
while(l SortUtil.swap(data,l,r); :a8 YV!X  
return l; OV2 -8ERS  
} t- u VZ!`\  
(2ur5uk+  
} H~eRT1  
!IU.a90V  
改进后的快速排序: o56`  
T J^u"j-'  
package org.rut.util.algorithm.support; dF0,Y?  
a)Q!'$"'  
import org.rut.util.algorithm.SortUtil; |yyO q  
0tIS Xu-  
/** 6K cD&S/  
* @author treeroot AT2v!mNyCw  
* @since 2006-2-2 %:>3n8n  
* @version 1.0 Sw^X2$h  
*/ 65 z"  
public class ImprovedQuickSort implements SortUtil.Sort { ^ &E}r{?  
kp?w2+rz  
private static int MAX_STACK_SIZE=4096; 1XG!$ 4DW  
private static int THRESHOLD=10; OJT1d-5p  
/* (non-Javadoc) YzosZ! L!<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dpQG[vXe  
*/ { pu85'DV  
public void sort(int[] data) { ERwHLA  
int[] stack=new int[MAX_STACK_SIZE]; 7e7 M@8+4  
=/<LSeLxH  
int top=-1; T@}|zDC#  
int pivot; .)1_Ew  
int pivotIndex,l,r; hPq%L c  
kdz=ltw  
stack[++top]=0; IcP)FB 4  
stack[++top]=data.length-1; 4=uhh  
64Lx -avf  
while(top>0){ R [H+qr  
int j=stack[top--]; Yw _+`,W   
int i=stack[top--]; 0![ +Q4"  
a{!QOX%K  
pivotIndex=(i+j)/2; 8u[-'pV!  
pivot=data[pivotIndex]; i'stw6*J  
h%WE=\,Qp  
SortUtil.swap(data,pivotIndex,j); VxP&j0M>  
%0#1t 5g  
file://partition gOgps:  
l=i-1; `[o)<<}  
r=j; Z\[N!Zt|  
do{ YV=QF J'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); *5bLe'^\|K  
SortUtil.swap(data,l,r); Y_`-9'&  
} "5cM54Z0  
while(l SortUtil.swap(data,l,r); k6`6Mjbc  
SortUtil.swap(data,l,j); fEB7j-t  
(E,T#uc{  
if((l-i)>THRESHOLD){ !+u"3;%h  
stack[++top]=i; .4. b*5  
stack[++top]=l-1; 5cx#SD&5/  
} }@if6(0  
if((j-l)>THRESHOLD){ Qf@I)4'  
stack[++top]=l+1; "CiTa>x  
stack[++top]=j; 0G!]=  
} .ROznCe}  
v}WR+)uFQ  
} B^).BQ  
file://new InsertSort().sort(data); aq7~QX_0G  
insertSort(data); "3FihE]k  
} keRE==(D  
/** \uss Uv  
* @param data -OSa>-bzNx  
*/ O-)-YVU  
private void insertSort(int[] data) { Y^<bl2"y8  
int temp; 8Lw B B  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :[;hu}!&  
} ybp -$e  
} #c^^=Z  
} O+ICol  
yq$,,#XDD=  
} tor!Dl@Mo  
aM;W$1h  
归并排序: %;D.vKoh  
xMBaVlEN  
package org.rut.util.algorithm.support; - |gmQG  
7VP32Eh[  
import org.rut.util.algorithm.SortUtil; +]Y,q w  
Tyck/ EO  
/** A%^ILyU6c  
* @author treeroot 0x!2ihf  
* @since 2006-2-2 Fgh]KQ/5  
* @version 1.0 H$6`{lx,  
*/ r hfb ftw  
public class MergeSort implements SortUtil.Sort{ LCQE_}Mh  
fj&i63?e  
/* (non-Javadoc) >]c*'~G&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SCTA=l.  
*/ K^R,Iu/M  
public void sort(int[] data) { @$z<i `4  
int[] temp=new int[data.length]; 9VbOQ{8  
mergeSort(data,temp,0,data.length-1); /Ju;MeE9  
} zLJ/5&  
M.>l#4s,'  
private void mergeSort(int[] data,int[] temp,int l,int r){ Ox-|JJ=  
int mid=(l+r)/2; ,`aq+K  
if(l==r) return ; Y3=_ec3w  
mergeSort(data,temp,l,mid); C$5[X7'  
mergeSort(data,temp,mid+1,r); m?&1yU9  
for(int i=l;i<=r;i++){ }m-FGk  
temp=data; b3VS\[p  
} $r3i2N-I  
int i1=l; ^53r/V}%  
int i2=mid+1; t N2Md}@e  
for(int cur=l;cur<=r;cur++){ >i6yl5s  
if(i1==mid+1) y.Z?LCd<  
data[cur]=temp[i2++]; 1u9LdkhnY  
else if(i2>r) Tq~=TSD  
data[cur]=temp[i1++]; ny54XjtG,  
else if(temp[i1] data[cur]=temp[i1++]; 2j&AiD  
else YSe.t_K2C  
data[cur]=temp[i2++]; S)/_muP  
} )=etG  
} P$-X)c$&  
%Ijj=wW  
} VzKW:St  
_ :VB}>  
改进后的归并排序: 2TA*m{\Hr  
L5\WpM=  
package org.rut.util.algorithm.support; eET}r 24  
>MvDVPi~+  
import org.rut.util.algorithm.SortUtil; Dmu/RD5X:  
*~x/=.}  
/** 0/oyf]HR  
* @author treeroot 9,"L^W8"k  
* @since 2006-2-2 ,11H.E Z  
* @version 1.0 *C:|X b<9  
*/ Y(cGk#0  
public class ImprovedMergeSort implements SortUtil.Sort { W}]%X4<#rN  
NSDv ;|f  
private static final int THRESHOLD = 10; ?%y?rk <  
I'0@viF"Nx  
/* b 'pOJS  
* (non-Javadoc) J>bJ 449B  
* UCClWr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z LD}a:s  
*/ dB5b@9*  
public void sort(int[] data) { 1{r)L{]  
int[] temp=new int[data.length]; }7.PH'.8  
mergeSort(data,temp,0,data.length-1); ;y2/-tL?  
} d:U9pC$  
B[4KX  
private void mergeSort(int[] data, int[] temp, int l, int r) { `WH"%V:"Q  
int i, j, k; .8G@%p{,  
int mid = (l + r) / 2; ,5*eX  
if (l == r) %$Aqle[  
return; heK7pH7;d  
if ((mid - l) >= THRESHOLD) bG(3^"dS  
mergeSort(data, temp, l, mid); AlIpsJ[UU  
else a0ObBe'  
insertSort(data, l, mid - l + 1); ;{" +g)u  
if ((r - mid) > THRESHOLD) 81i655!Z  
mergeSort(data, temp, mid + 1, r); =HlQ36;*  
else w2'f/  
insertSort(data, mid + 1, r - mid);  pn5Q5xc  
K]0JC/R6(@  
for (i = l; i <= mid; i++) {  W0]gLw9*  
temp = data; qDfd.gL  
} [F6U+1n8e  
for (j = 1; j <= r - mid; j++) { /Dj=iBO  
temp[r - j + 1] = data[j + mid]; 8!Ww J Oe  
} k|H:  
int a = temp[l]; 9c6gkt9eB  
int b = temp[r]; #Q`dku%V:  
for (i = l, j = r, k = l; k <= r; k++) { ]f({`&K5  
if (a < b) { 0ok-IHE<  
data[k] = temp[i++]; z=3\Ab  
a = temp; -xA2pYz"  
} else { u!W0P6   
data[k] = temp[j--]; M%kO7>h8  
b = temp[j]; A"rfZ`  
} LpqO{#ZG  
} l|k`YC x  
} z\%Ls   
_c_[ C*T]  
/** x}8yXE"  
* @param data F ;2w1S^  
* @param l cj'}4(  
* @param i ]n~ilS.rkl  
*/ ~"kb7Fxp  
private void insertSort(int[] data, int start, int len) { 7*Ej. HK  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *5^Q7``  
} YS*9t Q{  
} 3 C<L  
} Y/ .Z .FD`  
} F6{bjv2A  
-K3^BZ HI  
堆排序: |* ;B  
)j0TeE1R  
package org.rut.util.algorithm.support; cLsV`@J(k  
@8pp EFw  
import org.rut.util.algorithm.SortUtil; 70Wggty  
?1K#dC52#  
/** 2-Ej4I~  
* @author treeroot VYk!k3qS  
* @since 2006-2-2 jGpN,/VQa  
* @version 1.0 U_n9]Z  
*/ .jk@IL  
public class HeapSort implements SortUtil.Sort{ }%_ b$  
\}"$ ?d'f  
/* (non-Javadoc) 9|gr0&#~j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )6D,d5<  
*/ UZJCvfi  
public void sort(int[] data) { /! "|_W|n  
MaxHeap h=new MaxHeap(); 0,89H4  
h.init(data); Xy$3VU*  
for(int i=0;i h.remove(); m;GbLncA  
System.arraycopy(h.queue,1,data,0,data.length); z;|A(*Y  
} `</ff+Q6  
SfaQvstN  
private static class MaxHeap{ $4 S@  
F.=2u"[*&  
void init(int[] data){ C8V/UbA /  
this.queue=new int[data.length+1]; q$B>|y U  
for(int i=0;i queue[++size]=data; EkjN{$*  
fixUp(size); O\"3J(y,  
} 4hTMbS_;  
} C,ARXW1  
HiR[(5vnf  
private int size=0; {^7Hgg  
5BlR1*  
private int[] queue; uP~@U"!  
Vt".%d/`7  
public int get() { +~mA}psr  
return queue[1]; /2=#t-p+  
} , P70J b  
{ + Zd*)M[  
public void remove() { Pa V@aM~3  
SortUtil.swap(queue,1,size--); `\#B18eU  
fixDown(1); `OXpU,Z 6U  
} B1>/5hV}  
file://fixdown 8TLgNQP  
private void fixDown(int k) { z6jc8Z=O  
int j; (nlvl?\d  
while ((j = k << 1) <= size) { XF;ES3 d  
if (j < size %26amp;%26amp; queue[j] j++; Of[XKFn_  
if (queue[k]>queue[j]) file://不用交换 3TY5;6  
break; l0PZ`m+;j  
SortUtil.swap(queue,j,k); ;h*K}U  
k = j; `Nb[G)Xh  
} XkXHGDEf1  
} SEGri#s  
private void fixUp(int k) { @,cowar*  
while (k > 1) { ,D]QxbwZ  
int j = k >> 1; `lO[x.[  
if (queue[j]>queue[k]) kT"Kyd  
break; +'I+o5*  
SortUtil.swap(queue,j,k); 3L_\`Ia9  
k = j; GzI yP(U  
} {MCi<7j<?  
} #xQr<p$L6  
iS WU'K  
} R3;Tk^5A  
DRp~jW(\y  
} smRE!f*q  
clL2k8VS  
SortUtil: qB0E_y)a  
O4cr*MCb5  
package org.rut.util.algorithm; J;{N72  
]|zp0d=&o  
import org.rut.util.algorithm.support.BubbleSort; QxVq^H  
import org.rut.util.algorithm.support.HeapSort; G MX?  
import org.rut.util.algorithm.support.ImprovedMergeSort; $c:ynjL|P-  
import org.rut.util.algorithm.support.ImprovedQuickSort; Vzdh8)Mu\  
import org.rut.util.algorithm.support.InsertSort; #Ssx!+q?  
import org.rut.util.algorithm.support.MergeSort; mpuq 9)6  
import org.rut.util.algorithm.support.QuickSort; YaKeq5%y  
import org.rut.util.algorithm.support.SelectionSort; MGR!Z@1y  
import org.rut.util.algorithm.support.ShellSort; .!$*:4ok  
s;S?;(QI  
/** XWS%zLaK  
* @author treeroot j/r]wd"aUS  
* @since 2006-2-2 r? NznNVU  
* @version 1.0 #\.,?A}9  
*/ ]B%v+uaW  
public class SortUtil { _wkVwPr  
public final static int INSERT = 1; |)b6>.^  
public final static int BUBBLE = 2; H%UL%l$  
public final static int SELECTION = 3; J'SZ  
public final static int SHELL = 4; Q<^Tl(`/N?  
public final static int QUICK = 5; ^;Y|3)vvB  
public final static int IMPROVED_QUICK = 6; U(Nu%  
public final static int MERGE = 7; xLNtIzx  
public final static int IMPROVED_MERGE = 8; / ';0H_  
public final static int HEAP = 9; KxYwJ  
h|VeG3H  
public static void sort(int[] data) { \>:CvTzF  
sort(data, IMPROVED_QUICK); 5!DBmAB  
} 8\^}~s$$A  
private static String[] name={ %k-3?%&8  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;aI[=?<x  
}; /'].lp  
~$:|VHl  
private static Sort[] impl=new Sort[]{ Ne8Cgp  
new InsertSort(), iYORu 3  
new BubbleSort(), -+ SF  
new SelectionSort(), q|o}+Vr  
new ShellSort(), kzn5M&f>  
new QuickSort(), qq) rd  
new ImprovedQuickSort(), T (OW  
new MergeSort(), Sp@^XmX(S  
new ImprovedMergeSort(), -fwoTGlX  
new HeapSort() {QcLu"?c  
}; -8eoNzut  
x(hE3S#+  
public static String toString(int algorithm){ _/uFsYC  
return name[algorithm-1]; 5R'TcWf#W  
} NO|KVZ~  
//T>G_1  
public static void sort(int[] data, int algorithm) { TH; R  
impl[algorithm-1].sort(data); ??PC k1X  
} Izhee%c  
^B(V4-|  
public static interface Sort { Ge-CY  
public void sort(int[] data); <(-= 'QA  
} U*( izD  
:`-,Lbg  
public static void swap(int[] data, int i, int j) { CN#+U,NZV  
int temp = data; xIxn"^'  
data = data[j]; Xf02"PXC  
data[j] = temp; ^* J2'X38I  
} fBRo_CU8!  
} XWA:J^  
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