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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。 R{*p \;  
插入排序: ly{ ~X  
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package org.rut.util.algorithm.support; A5nu`e9&  
CjO/q)vV  
import org.rut.util.algorithm.SortUtil; HFf| >&c&  
/** v=/V<3  
* @author treeroot PCFm@S@Q  
* @since 2006-2-2 H!xBFiOH$n  
* @version 1.0 ZLO _5#<  
*/ ?49wq4L;a  
public class InsertSort implements SortUtil.Sort{ 8HWY]:| oh  
S4 tdW A  
/* (non-Javadoc) 7u!p.kN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xxedezNko  
*/ "r|O /   
public void sort(int[] data) { OCX?U50am  
int temp; {^ N = hI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 20K<}:5t1  
} "7gHn0e>  
} inhb>zB  
} 'r'uR5jR  
*Fq Nzly  
} qC]D9 A  
m6JIq}CMb  
冒泡排序: 45_zO#  
{wd.aUB  
package org.rut.util.algorithm.support; ukZL  
D@f%&|IZ  
import org.rut.util.algorithm.SortUtil; mDo]5 i<  
]5} =r  
/** /.}&yRR  
* @author treeroot ^^)Pv#[3  
* @since 2006-2-2 M>'-P  
* @version 1.0 y_a~>S  
*/ 8_ju.h[  
public class BubbleSort implements SortUtil.Sort{ 4}l,|7_&I  
*WOA",gZ  
/* (non-Javadoc) J]Y." hi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &;,w})  
*/ <FGM/e4  
public void sort(int[] data) { kR'!;}s  
int temp; KUB"@wUr  
for(int i=0;i for(int j=data.length-1;j>i;j--){ lKe aI  
if(data[j] SortUtil.swap(data,j,j-1); >yT:eG  
} Yr[1-Oy/k  
} CjIkRa@!x  
} uD<*g(R  
} `oq 3G }  
& {B,m%G  
} ncu> @K$n  
Fnr*.k  
选择排序: 2 0hE)!A  
RJ@d_~%U  
package org.rut.util.algorithm.support; 6 )Oe]{-  
Vrz<DB^-e  
import org.rut.util.algorithm.SortUtil; 0Wk}d(f  
>6(nW:I0y  
/** *USZ2|i  
* @author treeroot cITQ,ah  
* @since 2006-2-2 N7Dm,Q]  
* @version 1.0 KJSN)yn\  
*/ e}aD <E G  
public class SelectionSort implements SortUtil.Sort { Px)VDs=k  
KLbP;:sr  
/* }1'C!]j  
* (non-Javadoc) 7CNEP2}:R  
* $] w&`F-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tt#M4n@  
*/ e8P |eK  
public void sort(int[] data) { u},<On  
int temp; b) .@ xS  
for (int i = 0; i < data.length; i++) { 2D&tDX<  
int lowIndex = i; 3\6jzD  
for (int j = data.length - 1; j > i; j--) { !AP|ozkL  
if (data[j] < data[lowIndex]) { ]xV7)/b5G  
lowIndex = j; l6a,:*_  
} e,8C} 2  
} XKMJsEP sW  
SortUtil.swap(data,i,lowIndex); !MQo= k  
} FWPkvL  
} W0l|E&fj[  
<A+Yo3|7  
} >|H=25N>;  
c_&iGQ  
Shell排序: Ma wio5  
{Pu\KRU  
package org.rut.util.algorithm.support; &eyFApM[Z  
(;cbgHo%}  
import org.rut.util.algorithm.SortUtil; ~(G]-__B<  
GT2;o  
/** 4z?6[Cg<  
* @author treeroot N CX!ss  
* @since 2006-2-2 A+:K!|w  
* @version 1.0 }_XKO\  
*/ &!Y^DR/  
public class ShellSort implements SortUtil.Sort{ \)`\F$CF  
SIzW3y[  
/* (non-Javadoc) Ca]vK'(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) En-eG37 l  
*/ O*!+D-  
public void sort(int[] data) { e-\J!E'1F  
for(int i=data.length/2;i>2;i/=2){ ,8EeSnI  
for(int j=0;j insertSort(data,j,i); Cz m`5  
} ym8\q:N(R  
} 0 UjT<t^F  
insertSort(data,0,1); prhFA3 rW.  
} vpTS>!i  
%e:VeP~  
/** &+ JV\  
* @param data ]%F3 xzOk  
* @param j js'* :*7  
* @param i Kl\A&O*{  
*/ 6^}GXfJAc  
private void insertSort(int[] data, int start, int inc) { ~@MIG  
int temp; d),@&MSN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \Qz>us=G  
} 2t/ba3Rfk  
} e2k!5O S  
} lg;`ItX]  
$Ob]JAf}  
} nD!C9G#oS  
{#0B~Zr  
快速排序: l,-smK69  
q1`uS^3`  
package org.rut.util.algorithm.support; F2OU[Z,-]  
OJQ7nChMm  
import org.rut.util.algorithm.SortUtil; b]Oc6zR,,~  
|&h!#Q{7l  
/** !5Z?D8dcx  
* @author treeroot r]" >  
* @since 2006-2-2  H[fD >  
* @version 1.0 ,1RW}1n  
*/ U~!97,|ic  
public class QuickSort implements SortUtil.Sort{ !\RR UH*  
`p*7MZ9 -  
/* (non-Javadoc) D?8t'3no  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o!wz:|\S  
*/ SL>>]A,E<`  
public void sort(int[] data) { !V7VM_}@Y  
quickSort(data,0,data.length-1); ZO W{rv]  
} W^P%k:anK  
private void quickSort(int[] data,int i,int j){ /$]dVvhX%  
int pivotIndex=(i+j)/2; 6D/5vM1  
file://swap 0 l G\QT  
SortUtil.swap(data,pivotIndex,j);  w~&bpCB!  
DTAEfs!ZW  
int k=partition(data,i-1,j,data[j]); Xj?j1R>GB  
SortUtil.swap(data,k,j); G2 xYa$&][  
if((k-i)>1) quickSort(data,i,k-1); >{ne!  
if((j-k)>1) quickSort(data,k+1,j); Y')in7g  
I^0bEwqZ~  
} h&;\   
/** FV!  
* @param data ~$YFfv>  
* @param i C(7LwV  
* @param j b;Q cBGwKT  
* @return n[ AJ'A{  
*/ i!ejK6Q  
private int partition(int[] data, int l, int r,int pivot) { L}lc=\  
do{ bmzs!fg_~R  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); +q1 @8  
SortUtil.swap(data,l,r); @;JT }R H-  
} `b# w3 2  
while(l SortUtil.swap(data,l,r); NrhU70y  
return l; _+.z2} M  
} X;6&:%ZL@^  
i,$*+2Z  
} xH; 4lw  
_lu.@IX-  
改进后的快速排序:  UTHGjE  
^mkplp a  
package org.rut.util.algorithm.support; `SFI\Y+WDT  
wNcf7/ky  
import org.rut.util.algorithm.SortUtil; 3#^xxEu  
& i)p^AmM  
/** oT_k"]~Q~2  
* @author treeroot ;UArDwH  
* @since 2006-2-2 \6 2|w HX  
* @version 1.0 ;, 'eO i  
*/ C(xdiQJh  
public class ImprovedQuickSort implements SortUtil.Sort { +wS?Z5%mU  
Pdrz lu   
private static int MAX_STACK_SIZE=4096; MJ4+|riB  
private static int THRESHOLD=10; zl4Iq+5~6Q  
/* (non-Javadoc) xud =(HLl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) maXQG&.F  
*/ 7z5AI!s_  
public void sort(int[] data) { ;~tKNytD`B  
int[] stack=new int[MAX_STACK_SIZE]; 7o'kdY Jzo  
sj0Hv d9  
int top=-1; Y{f;qbEQH'  
int pivot; svHs&v  
int pivotIndex,l,r; !1-:1Whz8  
S^a")U4  
stack[++top]=0; #e{l:!uS\  
stack[++top]=data.length-1; NIQNzq?a^  
M,3sK!`>  
while(top>0){ P9SyQbcK  
int j=stack[top--]; cQA;Y!Q #  
int i=stack[top--]; jaFBz&P/#  
e#<%`\qH  
pivotIndex=(i+j)/2; "  q0lh  
pivot=data[pivotIndex]; yAW%y  
G\=7d%T+  
SortUtil.swap(data,pivotIndex,j); T%VC$u4F  
*)T},|Gc  
file://partition gG&2fV}l6  
l=i-1; :BN qr[=b  
r=j; gY=nU,;  
do{ |36d<b Io  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9]xOu Cb  
SortUtil.swap(data,l,r); LS?3 >1g  
} )xoIH{  
while(l SortUtil.swap(data,l,r); G  ZDyw9  
SortUtil.swap(data,l,j); #JWW ;M6F  
Kn?>XXAc  
if((l-i)>THRESHOLD){ 1\$xq9  
stack[++top]=i; ;mjk`6p  
stack[++top]=l-1; %8DU}}Rj  
} +j%!RS$ko  
if((j-l)>THRESHOLD){ 9NBFG~)|l[  
stack[++top]=l+1; ?<%GY dus  
stack[++top]=j; OT+=H)/  
} &&nvv&a  
[h {zT)[  
} b>er'U  
file://new InsertSort().sort(data); O@ F0UM`!  
insertSort(data); 3-`IMN n!  
} 8Mf6*G#Y  
/** m6a`OkP  
* @param data W.'#pd  
*/ N^*%{[<5  
private void insertSort(int[] data) { g=XvqD<  
int temp; LPc)-t|p"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wqkD  
} {^a"T'+  
} | (JxtQqQg  
} G3 rTzMO  
lA<n}N)j  
} aY@]mMz\  
PzMJ^H{  
归并排序: ~:'tp28?  
.!e):&(8  
package org.rut.util.algorithm.support; iyKAw   
Ye% e!  
import org.rut.util.algorithm.SortUtil; Tty_P,  
X ^8@T  
/** c @7d4Jz  
* @author treeroot 6<u =hhL  
* @since 2006-2-2 w$[&ejFb  
* @version 1.0 B52n'.  
*/ t~]n"zgovz  
public class MergeSort implements SortUtil.Sort{ = .a}  
VHyH't_&s  
/* (non-Javadoc) |;sL*Vr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <`rmQ`(}s  
*/ cvxYuP~  
public void sort(int[] data) { 9: N[9;('  
int[] temp=new int[data.length]; ;)$bhNFHx  
mergeSort(data,temp,0,data.length-1); {RH&mu  
} DB%}@IW"  
@6h ,#8#  
private void mergeSort(int[] data,int[] temp,int l,int r){ IJa6W`}  
int mid=(l+r)/2;  bi/ AQ^  
if(l==r) return ; i^T@jg+K  
mergeSort(data,temp,l,mid); diHK  
mergeSort(data,temp,mid+1,r); i<@"+~n~GK  
for(int i=l;i<=r;i++){ #N Qpr  
temp=data; 5|O~  
} Iue}AGxu:{  
int i1=l; uDD{O~wF,  
int i2=mid+1; 6<1 2j7  
for(int cur=l;cur<=r;cur++){ k;/K']4y  
if(i1==mid+1) 2qd5iOhX+  
data[cur]=temp[i2++]; 'F2g2W`  
else if(i2>r) ncTPFv H5  
data[cur]=temp[i1++]; ;QO3^P}  
else if(temp[i1] data[cur]=temp[i1++]; wnUuoX(  
else e~oh%l^C72  
data[cur]=temp[i2++]; Nm$B a.Rg  
} eJbZA&:  
} I+2#k\y  
mR,w~wP  
} ?vt#M^Q   
oZ,J{I!L  
改进后的归并排序: x{DTVa 6y2  
`PY=B$?{4  
package org.rut.util.algorithm.support; D/[;Y<X#V  
w#6)XR|+,.  
import org.rut.util.algorithm.SortUtil; [nc-~T+Mo  
:j2?v(jT_l  
/** M$u.lI  
* @author treeroot gn//]|#H+  
* @since 2006-2-2 Xwp6]lx  
* @version 1.0 :; z]:d  
*/ )J^5?A  
public class ImprovedMergeSort implements SortUtil.Sort { T.(C`/VM  
:$6mS[@|  
private static final int THRESHOLD = 10; 2# 72B  
h;Hg/jv  
/* 1.0:  
* (non-Javadoc) L"KKW c  
* :6gRoMb]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m!5MGq~  
*/ zMke}2  
public void sort(int[] data) { %1mIngW=g  
int[] temp=new int[data.length]; [][ze2+b  
mergeSort(data,temp,0,data.length-1); ?K\r-J!Y  
} ; ,Nvg6c  
n\ 'PNB  
private void mergeSort(int[] data, int[] temp, int l, int r) { n'To:  
int i, j, k; &w!(.uDO  
int mid = (l + r) / 2; R ;k1(p  
if (l == r) #V{!|Y'  
return; s"UUo|hM  
if ((mid - l) >= THRESHOLD) l{I.l  
mergeSort(data, temp, l, mid); S awf]/  
else BUCPO}I  
insertSort(data, l, mid - l + 1); tWyl&,3?1  
if ((r - mid) > THRESHOLD) s6F0&L;N&  
mergeSort(data, temp, mid + 1, r); cYgd1  
else .],:pL9d  
insertSort(data, mid + 1, r - mid); vA"LV+@  
J#IVu?B  
for (i = l; i <= mid; i++) { ;il+C!6zpf  
temp = data; A("\m>g$b  
} $D='NzE/  
for (j = 1; j <= r - mid; j++) { p;qFMzyS9  
temp[r - j + 1] = data[j + mid]; ?8qN8rk^+  
} @;G%7&ps  
int a = temp[l]; XXw>h4hl  
int b = temp[r]; j.!5&^;u4  
for (i = l, j = r, k = l; k <= r; k++) { Bz(L}V]\k  
if (a < b) { eZ]>;5  
data[k] = temp[i++]; z}Lf]w?  
a = temp; @Q7^caG  
} else { Quwq_.DU  
data[k] = temp[j--]; 3*T/ 7\  
b = temp[j]; bE,#,  
} EQe$~}[  
} q[Tl#*P?y  
} )<%CI#s#  
SP\s{,'F-b  
/** rB-R(2 CCN  
* @param data :IX,mDO  
* @param l 8=@f lK  
* @param i &_q8F,I \<  
*/ p"7]zq]'  
private void insertSort(int[] data, int start, int len) { ]s0GAp"  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Py?e+[cN  
} iGSF5S  
} ;?q-]J?  
} Q,M,^_  
} .}GOHW)}  
TS`m&N{i")  
堆排序: c'XSs  
'0^lMQMg  
package org.rut.util.algorithm.support; +f$ {r7  
2Jky,YLcb  
import org.rut.util.algorithm.SortUtil;  f,kV  
l9]nrT1Hy  
/** $VjMd f  
* @author treeroot }~Do0XUH  
* @since 2006-2-2 uGn BlR$}  
* @version 1.0 H ?eG5  
*/ $> ;|  
public class HeapSort implements SortUtil.Sort{ E@%1HO_  
ecx_&J@D  
/* (non-Javadoc) (/^?$~m"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A#{I- *D[  
*/ WL|71?@C  
public void sort(int[] data) { ]yQqx*  
MaxHeap h=new MaxHeap(); +U<.MVOo.  
h.init(data); A8QUfg@uK~  
for(int i=0;i h.remove(); uP$i2Cy  
System.arraycopy(h.queue,1,data,0,data.length); tJ* /5k &  
} nVrV6w  
<Qr*!-Kc6  
private static class MaxHeap{ ;pS+S0U   
oB@)!'  
void init(int[] data){ MR: H3  
this.queue=new int[data.length+1];  ^Y!$WP  
for(int i=0;i queue[++size]=data; Zx`/88!x[  
fixUp(size); JvEW0-B^l,  
} N?8nlrDQ  
} 3sRI 7g  
Unansk  
private int size=0; C^LxJG{L5  
aO}p"-'  
private int[] queue; vXZP>  
QpiDBJCL  
public int get() { l: kW|  
return queue[1]; t|9vb  
} ' R2*3<  
G^z>2P  
public void remove() { M04u>| ,  
SortUtil.swap(queue,1,size--);  $C,` ^n'  
fixDown(1); z =\ENG|x#  
} yRD tPK"E-  
file://fixdown [,;O$j}  
private void fixDown(int k) { oLtzPC  
int j; 1vAJ(O{-  
while ((j = k << 1) <= size) { fh66Gn,  
if (j < size %26amp;%26amp; queue[j] j++; "rc QS H  
if (queue[k]>queue[j]) file://不用交换 R&:Qy7"  
break; 7<L!" 2VB  
SortUtil.swap(queue,j,k); bSQj=|h1  
k = j; Z#l6BXK  
} Z^Wv(:Nr  
} /!.]Y8yEH  
private void fixUp(int k) { ]dV $H  
while (k > 1) { /Z~$`!J  
int j = k >> 1; 2f{a||  
if (queue[j]>queue[k]) xX0 wn?,~  
break; YG5mzP<T  
SortUtil.swap(queue,j,k); {9) HB:  
k = j; ({$rb-  
} +VJyGbOcC  
} ynf!1!4  
(]VY==t~  
} ay`R jT  
;>fM?ae5  
} 0-uVmlk=/  
z5D*UOy5M  
SortUtil: XeslOsHh  
bA'N2~.,  
package org.rut.util.algorithm; yigq#h^  
P)hGe3  
import org.rut.util.algorithm.support.BubbleSort; -G'3&L4 D  
import org.rut.util.algorithm.support.HeapSort; -i_XP]b&  
import org.rut.util.algorithm.support.ImprovedMergeSort; b/\l\\$-  
import org.rut.util.algorithm.support.ImprovedQuickSort; epG =)gd=8  
import org.rut.util.algorithm.support.InsertSort; q0['!G%["  
import org.rut.util.algorithm.support.MergeSort; _EP~PW#J  
import org.rut.util.algorithm.support.QuickSort; k9NHdi7&2  
import org.rut.util.algorithm.support.SelectionSort; |Ho} D~  
import org.rut.util.algorithm.support.ShellSort;  [@3.dd  
Uc ; S@  
/** ixoN#'y<"  
* @author treeroot T-x9IoE  
* @since 2006-2-2 aZ|S$-}  
* @version 1.0 L$"pk{'  
*/ b `}hw"f  
public class SortUtil { U'Y,T$Q  
public final static int INSERT = 1; Y:Jgr&*,z  
public final static int BUBBLE = 2; <K>qK]|C  
public final static int SELECTION = 3; eOfVBF<C2  
public final static int SHELL = 4; H;DjM;be  
public final static int QUICK = 5; nU6UjC|3  
public final static int IMPROVED_QUICK = 6; jR+k x:+  
public final static int MERGE = 7; V@EyU/VJ  
public final static int IMPROVED_MERGE = 8; C~nL3w  
public final static int HEAP = 9; (.wR!l# !  
M~y}0Ik  
public static void sort(int[] data) { gO@LJ  
sort(data, IMPROVED_QUICK); Id>I.e4  
} 64<*\z_  
private static String[] name={ 9A|9:OdG1  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n;:C{5  
}; :2XX~|  
ta'wX   
private static Sort[] impl=new Sort[]{ 6?JvvS5  
new InsertSort(), M!%|IKw  
new BubbleSort(), Sogt?]HB$  
new SelectionSort(), ^V]IPGV  
new ShellSort(), 5aXE^.`  
new QuickSort(), 0< }BSv  
new ImprovedQuickSort(), EN8xn9M?  
new MergeSort(), 'TA !JB+  
new ImprovedMergeSort(), M7-2;MZ  
new HeapSort() )M"xCO3a  
}; QR<<O  
w02C1oGfx  
public static String toString(int algorithm){ ''q#zEf6  
return name[algorithm-1]; OsRizcgdA  
} b d C  
2 i NZz  
public static void sort(int[] data, int algorithm) { QHnC(b  
impl[algorithm-1].sort(data); ;0uiO.  
} 1?Tj  
.S* sGauM  
public static interface Sort { K<50>uG  
public void sort(int[] data); WYkh'sv >  
} O]j<$GG!  
::-*~CH)  
public static void swap(int[] data, int i, int j) { mMO]l(a&  
int temp = data; Z.s0ddM s  
data = data[j]; =j{Kxnv  
data[j] = temp; vkeZ!klYB  
} "M^mJl&*b  
} 10bv%ZX7  
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