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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。 s][24)99  
插入排序: -7qIToO.  
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package org.rut.util.algorithm.support; n~IVNB*  
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import org.rut.util.algorithm.SortUtil; kAYb!h[`  
/** $4=f+ "z  
* @author treeroot F\JUx L@8  
* @since 2006-2-2  k+ o|0  
* @version 1.0 kSncZ0K{  
*/ r#i?j}F}  
public class InsertSort implements SortUtil.Sort{ i'/m4 !>h  
n$L51#'  
/* (non-Javadoc) `TLzVB-j3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f:JlZ&  
*/ o2H1N~e#c  
public void sort(int[] data) { KFRw67^  
int temp; J4$! 68  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <cN~jv-w$  
} j{++6<tr  
} r),PtI0X  
} 3INI?y}t   
)(M7lq.e7  
} 8T[ 6J{|C  
~#K@ADYr  
冒泡排序: z9/G4^qF  
:*514N  
package org.rut.util.algorithm.support; JAc_kl{4O  
El_Qk[X|A  
import org.rut.util.algorithm.SortUtil; >H][.@LyR  
8,T4lb<<  
/** I&yVx8aH}  
* @author treeroot h!@,8y[B  
* @since 2006-2-2 }=](p-]5  
* @version 1.0 {2d_"lHBt  
*/ R{YzH56M  
public class BubbleSort implements SortUtil.Sort{ XUMX*  
 gJN0!N'  
/* (non-Javadoc) .1 )RW5|c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ol /\t  
*/ B:TR2G9UT  
public void sort(int[] data) { !v|ISyK  
int temp; X?r48l??  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RF}X ER  
if(data[j] SortUtil.swap(data,j,j-1); \`.F\ Z  
} ^y.nDs%ZT7  
} IV16d  
} %hS|68pN6  
} 6(&Y(/  
jjs&`Fy,  
} b}!3;:iD  
Fe&qwq"  
选择排序: ` m@U!X  
'Ye v} QM  
package org.rut.util.algorithm.support; FwAKP>6*  
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import org.rut.util.algorithm.SortUtil; z$lF)r:Bc  
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/** OWjJxORB  
* @author treeroot BG`s6aC|z<  
* @since 2006-2-2 IakKi4(  
* @version 1.0 \{\MxXW  
*/ t G.(flW,  
public class SelectionSort implements SortUtil.Sort { yTM3^R(  
E|EgB33S  
/* ~,6b_W p/  
* (non-Javadoc) 5A Bhj*7  
* FyL_xu\e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4#2/GXNO  
*/ 7^TV~E#  
public void sort(int[] data) { iTo k[uJ}  
int temp; }u{gR:lZ  
for (int i = 0; i < data.length; i++) { :& XH?/Wi  
int lowIndex = i; ~ AQp|  
for (int j = data.length - 1; j > i; j--) { @ez Tbc3  
if (data[j] < data[lowIndex]) { "VxWj}+]  
lowIndex = j; 9.O8/0w7LV  
} {04"LAE  
} >-< 8N-@"n  
SortUtil.swap(data,i,lowIndex); O;Y:uHf  
} zzGYiF ?  
} +V862R4,o  
Rhzn/\)|  
} qF)< H  
1t[j"CG(o  
Shell排序: ,.IEDF<&  
2 +5e0/_V  
package org.rut.util.algorithm.support; xFv;1Q  
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import org.rut.util.algorithm.SortUtil; lG<hlYckv  
>XW*T5aUA  
/** qAkx<u  
* @author treeroot \[2lvft!  
* @since 2006-2-2 ,"}Rg1\4t  
* @version 1.0 VzS&`d.h  
*/ _A_ A$N~9  
public class ShellSort implements SortUtil.Sort{ DrW#v-d  
]1-z! B4K  
/* (non-Javadoc) ITuq/qts]A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ewsKH\#  
*/ 2LY=D L7  
public void sort(int[] data) { i=FQGWAUu  
for(int i=data.length/2;i>2;i/=2){ 9X<OJT;3J  
for(int j=0;j insertSort(data,j,i); Ma-\^S=  
} )o _j]K+xI  
} g\A y`.s  
insertSort(data,0,1); 3+7^uR$/I4  
} ^ ?hA@{T/1  
:q##fG 'm/  
/** wgeNs9L  
* @param data wYsZM/lw  
* @param j tS# `.F~y  
* @param i SJ' % ^  
*/ c/W=$3  
private void insertSort(int[] data, int start, int inc) { q]& .#&h  
int temp; U$&hZ_A  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A^fjfa);V  
} m@Ev~~;  
} +';>=hha  
} [(LV  
=(AtfW^H  
} wz8PtfZ  
:Gqy>)CxX  
快速排序: FeJr\|FT  
,0$)yZ3*3,  
package org.rut.util.algorithm.support; UnWW/]E  
5R MS(  
import org.rut.util.algorithm.SortUtil; ig"uXs  
A!W0S  
/** @* 1U{`  
* @author treeroot qf'm=efRyu  
* @since 2006-2-2 CCijf]+  
* @version 1.0  Rxpn~QQ  
*/ {xcZ*m!B  
public class QuickSort implements SortUtil.Sort{ -XoPia2  
> Vb@[  
/* (non-Javadoc) G* %t'jX9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dP$GThGl  
*/ 1a0kfM$  
public void sort(int[] data) { JD>d\z2QC  
quickSort(data,0,data.length-1); `\>.h  
} b}ODWdJ1  
private void quickSort(int[] data,int i,int j){ Upl6:xYrG  
int pivotIndex=(i+j)/2; $L4/I!Yf  
file://swap \b8sG"G  
SortUtil.swap(data,pivotIndex,j); 8Chj w wB  
c{ZY,C&<  
int k=partition(data,i-1,j,data[j]); 9V uq,dv  
SortUtil.swap(data,k,j); }'"Gr%jf(  
if((k-i)>1) quickSort(data,i,k-1); n#Dv2 E=6  
if((j-k)>1) quickSort(data,k+1,j); wJb#g0  
t5k!W7C  
} 8cx=#Me  
/** Rn%N&1 Ef  
* @param data qr\ !*\9  
* @param i NMO-u3<6.  
* @param j EUYCcL'G  
* @return PQW(EeQ  
*/ T70QJ=,  
private int partition(int[] data, int l, int r,int pivot) { wu<])&F  
do{ jdeV|H} u  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); v;#=e$%}MO  
SortUtil.swap(data,l,r); " }gVAAvc7  
} ^62|d  
while(l SortUtil.swap(data,l,r); fJ*:{48  
return l; 5M]z5}n/  
} kyh_9K1  
C) QKPT  
} C9n}6Er=,  
z!QDTIb  
改进后的快速排序: XALI<ZY  
;Lw{XqT  
package org.rut.util.algorithm.support; "yz iXT@V  
>>[/UFC)n  
import org.rut.util.algorithm.SortUtil; p5=|Y^g !  
`D( xv  
/** L gmvKW|  
* @author treeroot fHrt+_Zn|  
* @since 2006-2-2 -37a.  
* @version 1.0 OkAK  
*/ gMWBu~;!  
public class ImprovedQuickSort implements SortUtil.Sort { $!vxVs9n  
?71+ f{s  
private static int MAX_STACK_SIZE=4096; X C86-b)E  
private static int THRESHOLD=10; L(;WxHL  
/* (non-Javadoc) eC DIwB28  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \2[<XG(^  
*/ "; [ iZ  
public void sort(int[] data) { ,?UM;^  
int[] stack=new int[MAX_STACK_SIZE]; &ej8mq"\  
(9\;A*CZ  
int top=-1; -!RtH |P  
int pivot; w"m+~).U  
int pivotIndex,l,r; + j+5ud`  
CDj~;$[B  
stack[++top]=0; K`}{0@ilCw  
stack[++top]=data.length-1; ;^ wd_  
C F!Sa6  
while(top>0){ cxeghy:;U  
int j=stack[top--]; 9L0GLmLk1u  
int i=stack[top--]; vg Ipj3u  
4nfu6Dq  
pivotIndex=(i+j)/2; ,ea^,H6  
pivot=data[pivotIndex]; -F&U  
[,EpN{l  
SortUtil.swap(data,pivotIndex,j); }TRAw#h  
Z0!5d<  
file://partition tbo>%kn  
l=i-1; Zv]x'3J#Y  
r=j; ?,P3)&3g  
do{ (;x3} ]  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); :%&Q-kk4!  
SortUtil.swap(data,l,r); v!3A9!.  
} Kemw^48ts  
while(l SortUtil.swap(data,l,r); zIC;7 5#  
SortUtil.swap(data,l,j); qL6c`(0  
B0$:b !  
if((l-i)>THRESHOLD){ ^VW PdH/Fe  
stack[++top]=i; rVvR!"//yH  
stack[++top]=l-1; MfO:m[s  
} N/YWby=H  
if((j-l)>THRESHOLD){ z't? ?6  
stack[++top]=l+1; J2q,7wI#  
stack[++top]=j; (YBMsh  
} 8bK|:B#6,  
mOpTzg@  
} w&$d* E  
file://new InsertSort().sort(data); _LP/!D  
insertSort(data); [P zv4+  
}  j1?j6s  
/** yNW\?Z$@q  
* @param data kh~'Cn "O  
*/ <99M@ cF  
private void insertSort(int[] data) { 7A\Cbu2tf  
int temp; i"zuil  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f:*vr['d  
} lN,/3\B  
} :(dHY  
}  $p!yhn7  
<9ig?{'  
} ~vLW.:  
nKR{ug>I)  
归并排序: 4${jr\q]  
bQe^Px5 !.  
package org.rut.util.algorithm.support; i| \6JpNA:  
_(J&aY\  
import org.rut.util.algorithm.SortUtil; d\e7,"L*Q  
hLJM%on  
/** &<zd.~N"  
* @author treeroot _0+0#! J!  
* @since 2006-2-2 7\_o.(g#-  
* @version 1.0 I8oo~2Q w  
*/ bNT9 H`P  
public class MergeSort implements SortUtil.Sort{ "G >3QL+O|  
f >BWG`  
/* (non-Javadoc) T0)4v-EO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )9,  
*/ y(R? ,wa=]  
public void sort(int[] data) {  zYXV;  
int[] temp=new int[data.length]; ld$i+6|   
mergeSort(data,temp,0,data.length-1); gTRF^knrY  
} 5J8r8` t  
|AZg*T3:W  
private void mergeSort(int[] data,int[] temp,int l,int r){ Vcd.mE(t%  
int mid=(l+r)/2; (}.@b|s  
if(l==r) return ; dEBcfya  
mergeSort(data,temp,l,mid); f7Ul(D:j\  
mergeSort(data,temp,mid+1,r); s  {^yj  
for(int i=l;i<=r;i++){ kyR*D1N&)  
temp=data; No2b" G@  
} &A#~)i5gF  
int i1=l; MX>[^}n  
int i2=mid+1; #plY\0E@  
for(int cur=l;cur<=r;cur++){ JNcYJ[wqv  
if(i1==mid+1) ? ` SUQm  
data[cur]=temp[i2++]; bINvqv0v  
else if(i2>r) +r3IN){jz  
data[cur]=temp[i1++]; 9Fn\FYUq  
else if(temp[i1] data[cur]=temp[i1++]; );-~j  
else h6dPO"  
data[cur]=temp[i2++]; TLehdZ>^  
} n~VD uKn9  
} F R|&^j6  
fNGZo  
} E 7-@&=]v  
g^zs,4pPU<  
改进后的归并排序: .k,YlFvj  
w3jO6*_ M  
package org.rut.util.algorithm.support; U`hY{E;  
2wF8 P)  
import org.rut.util.algorithm.SortUtil; Q_l'o3  
Sna4wkbS  
/** a22XDes=  
* @author treeroot LdJYE;k Ju  
* @since 2006-2-2 s+>:,U<A  
* @version 1.0 G@j0rnn>B  
*/ $AHQmyg<  
public class ImprovedMergeSort implements SortUtil.Sort { \TU3rk&X  
RejQ5'Neh  
private static final int THRESHOLD = 10; ?6'rBH/w  
V')0 Mr  
/* sH\5/'?  
* (non-Javadoc) `-LGU7~+  
* Z1"v}g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  T Q,?>6n  
*/ =hl}.p  
public void sort(int[] data) { 7g3 >jh  
int[] temp=new int[data.length]; $ MC)}l  
mergeSort(data,temp,0,data.length-1); O$cHZs$  
} .9.2Be  
d^`?ed\1  
private void mergeSort(int[] data, int[] temp, int l, int r) { TsTPj8GAl[  
int i, j, k; kwsp9 0)  
int mid = (l + r) / 2; cp h:y  
if (l == r) P9 Z}H(?C  
return; zl`h~}I  
if ((mid - l) >= THRESHOLD) V*~Zs'L'E  
mergeSort(data, temp, l, mid); =JmT:enV  
else Po%(~ )S>  
insertSort(data, l, mid - l + 1); t45Z@hmcW  
if ((r - mid) > THRESHOLD) &iV{:)L  
mergeSort(data, temp, mid + 1, r); U,LTVYrO  
else ]LM-@G+Jz  
insertSort(data, mid + 1, r - mid); g&{9VK6.  
i7ly[6{^pr  
for (i = l; i <= mid; i++) { k!{p7*0  
temp = data; #^ ]n0!  
} P67o{EdK  
for (j = 1; j <= r - mid; j++) { b6*!ACY  
temp[r - j + 1] = data[j + mid]; 1x,tu}<u^  
} jq!tT%o*B  
int a = temp[l]; =)7s$ p  
int b = temp[r]; D|.ic!w'  
for (i = l, j = r, k = l; k <= r; k++) { {` w;39$+  
if (a < b) { Pfs;0}h5  
data[k] = temp[i++]; GQ-Rtn4v  
a = temp; 7sXxq4  
} else { )l#E}Uz  
data[k] = temp[j--]; 1</kTm/Qa  
b = temp[j]; y.q(vzg\_  
} m?&1yU9  
} )Dz+X9;g+  
} !3ctB3eJ  
ki)#d' }  
/** 1PatH[T[  
* @param data nakYn  
* @param l 3@]SKfoo1  
* @param i ,tg0L$qC  
*/ CH<E,Z C1T  
private void insertSort(int[] data, int start, int len) { gatB QwJb9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .e3+s*  
} SZXY/~=h  
} [#sz WNfU  
} ]H1I,`=@  
} fX|Y;S-@+  
]i)j3 WDz]  
堆排序: @qHNE,K  
n9xAPB }  
package org.rut.util.algorithm.support; X<*U.=r)  
k Zq!&  
import org.rut.util.algorithm.SortUtil; zO MA  
NW&b&o  
/** {qa Aq%'  
* @author treeroot x UD-iSY  
* @since 2006-2-2 )d>!"JB-  
* @version 1.0 HC}YY2  
*/ +PuPO9jKO@  
public class HeapSort implements SortUtil.Sort{ }O4^Cc6  
w4d--[Q  
/* (non-Javadoc) ]:~OG@(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uF3qD|I\  
*/ |x-S&-  
public void sort(int[] data) { 2]ape !(  
MaxHeap h=new MaxHeap(); 4tS.G  
h.init(data); fw RZ5`v<  
for(int i=0;i h.remove(); X.e7A/ClEo  
System.arraycopy(h.queue,1,data,0,data.length); xcf%KXJf6  
} GHeVp/u  
 1OF& *  
private static class MaxHeap{ 5EebPXBzB  
$"H{4 x`-  
void init(int[] data){ &sL&\+=<(  
this.queue=new int[data.length+1]; Q(oN/y3,  
for(int i=0;i queue[++size]=data; b^$|Nz;  
fixUp(size); L# 2+z@g  
} jE/AA!DC#  
} y)@[Sl>  
5)MS~ii  
private int size=0; & J2M1z%  
)}?#  
private int[] queue; M L>[^F  
9 o&`5  
public int get() { ^cz(}N 6&  
return queue[1]; -B$2\ZE  
} fu]s/'8B  
8 {X"h#  
public void remove() { vsl]92xI  
SortUtil.swap(queue,1,size--); hs$GN]  
fixDown(1); <U\B!fO'  
} _<OSqE  
file://fixdown 3S}Pm2D2  
private void fixDown(int k) { 2P@sn!*{1  
int j; [6XF=L,!  
while ((j = k << 1) <= size) { 1jF`5k  
if (j < size %26amp;%26amp; queue[j] j++; ]h %Wiw  
if (queue[k]>queue[j]) file://不用交换 ]n~ilS.rkl  
break; ,~]tg77  
SortUtil.swap(queue,j,k); MfWyc_  
k = j; D5*q7A6  
} k+ty>bP=  
} W|g4z7Pb  
private void fixUp(int k) { 4k@5/5zsM  
while (k > 1) { >)M`IU[d^.  
int j = k >> 1; K8UP,f2  
if (queue[j]>queue[k]) )j0TeE1R  
break; tE`u(B,  
SortUtil.swap(queue,j,k); 2 Cv4=S  
k = j; ZWKg9%y7  
} k@3Q|na  
} Tw;3_Lj  
I ,z3xU  
} \}"$ ?d'f  
f m)pulz  
} sWc*5Rt  
)]H-BIuGm  
SortUtil: [8*jw'W|[  
+>{Y.`a;Jo  
package org.rut.util.algorithm; [k;\SXDZo  
<#u=[_H  
import org.rut.util.algorithm.support.BubbleSort; \Ani}qQ%|  
import org.rut.util.algorithm.support.HeapSort; C8V/UbA /  
import org.rut.util.algorithm.support.ImprovedMergeSort; UVd7 JGR  
import org.rut.util.algorithm.support.ImprovedQuickSort; rp!oO>F  
import org.rut.util.algorithm.support.InsertSort; :?g:~+hfO  
import org.rut.util.algorithm.support.MergeSort; G <i@ 5\#  
import org.rut.util.algorithm.support.QuickSort; vnM@QfN  
import org.rut.util.algorithm.support.SelectionSort; c*L0@Ak%  
import org.rut.util.algorithm.support.ShellSort; AK*LyR?  
R|(q  
/** hp5|@  
* @author treeroot 06c>$1-?  
* @since 2006-2-2 x:7b/ j-  
* @version 1.0 &h^9}>rVjV  
*/ LH kc7X$  
public class SortUtil { 8o'_`{ba  
public final static int INSERT = 1; ;U.hxh;+  
public final static int BUBBLE = 2; CsoiyY -2  
public final static int SELECTION = 3; XkXHGDEf1  
public final static int SHELL = 4; ToXki,  
public final static int QUICK = 5; 7!EBH(,z  
public final static int IMPROVED_QUICK = 6; -ZRO@&tMD  
public final static int MERGE = 7; KLitg6&P  
public final static int IMPROVED_MERGE = 8; j}JrE,|  
public final static int HEAP = 9; P3)Nl^/  
g1W.mAA3B  
public static void sort(int[] data) { DRp~jW(\y  
sort(data, IMPROVED_QUICK); ifUGY[L  
} _m gHJ0v'  
private static String[] name={ ?fUlgQ }N  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zMm#Rhn  
}; QxVq^H  
<SgM@0m  
private static Sort[] impl=new Sort[]{ z$/_I0[  
new InsertSort(), $Q96,rb}k;  
new BubbleSort(), u'|4?"uz  
new SelectionSort(), M<.d8?p )  
new ShellSort(), cDFO;Dr  
new QuickSort(), 1 u| wMO  
new ImprovedQuickSort(), aWWU4xe  
new MergeSort(), TDFkxB>  
new ImprovedMergeSort(), aJ-K?xQ  
new HeapSort() k.vBj~xU  
}; sk,ox~0R  
4'g;TI^  
public static String toString(int algorithm){ b&~4t/Vq  
return name[algorithm-1]; z(_Ss@ $  
} '=nQ$/!q  
![YX]+jqNp  
public static void sort(int[] data, int algorithm) { #sPHdz'3M  
impl[algorithm-1].sort(data); +cgSC5nR  
} !`g~F\l  
F)&@P-9+  
public static interface Sort { EQb7 -vhg  
public void sort(int[] data); ysxb?6  
} trPAYa}W  
 -xSA  
public static void swap(int[] data, int i, int j) { Kw efs;<E?  
int temp = data; \r /ya<5  
data = data[j]; h]+C.Eqnt#  
data[j] = temp; DnCP aM4%  
} 7'Zky2F  
} \`oT#|0  
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10+5=?,请输入中文答案:十五