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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。 9;KJr[FQV  
插入排序: &U &%ka<*  
K{b-TT 4  
package org.rut.util.algorithm.support; Q%5F ]`VN  
k^%_V|&W/(  
import org.rut.util.algorithm.SortUtil; @ yxt($G  
/** CBHc A'L  
* @author treeroot VzwPBQ -  
* @since 2006-2-2 @2' %o<lF  
* @version 1.0 hI~SAd ,#A  
*/ !k<:k "7  
public class InsertSort implements SortUtil.Sort{ `="v>qN2\  
gb 4pN  
/* (non-Javadoc) nGrVw&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;nB2o-%  
*/ W9R`A  
public void sort(int[] data) { o^ h(#%O  
int temp; LfX0Z=<  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;NsO  
} vWY(%Q,  
} zWIeHIt  
} "=|t~`  
'IQsve7cI  
} xb$yu.c  
yFM>T\@  
冒泡排序: c> G@+  
-G b-^G  
package org.rut.util.algorithm.support; G6O/(8  
8/Rm!.8+~  
import org.rut.util.algorithm.SortUtil;  c8DZJSO  
`ROEV~  
/** [7W(NeMk  
* @author treeroot \&q=@rJp(z  
* @since 2006-2-2 .3wY\W8Dr-  
* @version 1.0 Alz~-hqQ  
*/ b!a %YLL  
public class BubbleSort implements SortUtil.Sort{ ]\;xN~l  
E $6ejGw-  
/* (non-Javadoc) F?4Sz#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;^-:b(E  
*/ p4mY0Y]mP  
public void sort(int[] data) { kO ![X^V  
int temp; R&So4},B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ aWaw&u  
if(data[j] SortUtil.swap(data,j,j-1); Rd! 2\|  
} NWKi ()nA%  
} :ba/W&-d  
} +ld;k/  
} Hed$ytMaGz  
9<cOYY  
} jXR16|  
SrZ50Se  
选择排序: 6?SFNDQ"C  
g6euXI  
package org.rut.util.algorithm.support; _D-Riu>#J  
m6U8)!)T  
import org.rut.util.algorithm.SortUtil; uva\0q  
l{%a&/  
/** Y';>O`  
* @author treeroot !_^g8^>2(  
* @since 2006-2-2 dDlG!F_=  
* @version 1.0 qrDcL>Hrn  
*/ (@Zcx9  
public class SelectionSort implements SortUtil.Sort { u~'OcO  
l)8sw=  
/* 2k+16/T  
* (non-Javadoc) % h+uD^^$  
* V/bH^@,sA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  ;Qa;@  
*/ yNva1I  
public void sort(int[] data) { (hf zM+2  
int temp; /DU*M,  
for (int i = 0; i < data.length; i++) { kxo.v|)8  
int lowIndex = i; qG9qN.|dC  
for (int j = data.length - 1; j > i; j--) { ma]? )1<{  
if (data[j] < data[lowIndex]) { oVkr3K Z  
lowIndex = j; &;v!oe   
} ;BI)n]L  
} YzV(nEW  
SortUtil.swap(data,i,lowIndex); B||c(ue  
} A,c'g}:  
} Y:pRcO.4g  
 :]c=pH  
} F<r4CHfh;  
d@g2k> >  
Shell排序: #F4X}  
Ae3,^  
package org.rut.util.algorithm.support; YMu)  
!6E:5=L^  
import org.rut.util.algorithm.SortUtil; d@>\E/zA  
PU+1=%'V  
/** %F5 =n"  
* @author treeroot uaxB -PZ  
* @since 2006-2-2 :qnokrGzB  
* @version 1.0 1nB@zBQu -  
*/ NI\H \#bJ  
public class ShellSort implements SortUtil.Sort{ h{/ve`F>@  
^<;w+%[MT  
/* (non-Javadoc) Wk[)+\WQ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @L;C_GEa  
*/ XS|mKuMc C  
public void sort(int[] data) { 8c).8RLf  
for(int i=data.length/2;i>2;i/=2){ mP!N<K  
for(int j=0;j insertSort(data,j,i); evOb  
} :bv|Ah  
} q6&67u0  
insertSort(data,0,1); -+P7:4/  
} .)`-Hkxa  
(C\r&N  
/** ifrq  
* @param data N84qcc  
* @param j {^wdJZ~QLK  
* @param i rfTe  
*/ XU-*[\K  
private void insertSort(int[] data, int start, int inc) { g7Z9F[d  
int temp; P)IjL&[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !4B_$6US  
} o2}N=|&  
} sR! +d:LJ4  
} CB]l[hM$  
pqq?*\W&[v  
} A^g>fv  
hVZo"XUb  
快速排序: ~ B]jV$=  
~04[KG  
package org.rut.util.algorithm.support; )* 3bkKVB  
N 8}lt  
import org.rut.util.algorithm.SortUtil; ITc `]K  
(H-cDsh;c  
/** {]["6V6W  
* @author treeroot p1^0{ILx  
* @since 2006-2-2 lh$CWsx  
* @version 1.0 -<d(  
*/ !x_t`78T  
public class QuickSort implements SortUtil.Sort{ 6eo4#/+%  
H:Lt$  
/* (non-Javadoc) f9F2U )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m&cvU>lC  
*/ >Bx8IO1_\d  
public void sort(int[] data) { 5Hy3\_ +  
quickSort(data,0,data.length-1); >[P%Ty);  
} ~o Fh>9u  
private void quickSort(int[] data,int i,int j){ eP?~- #  
int pivotIndex=(i+j)/2; yM|g|;U  
file://swap qmID-t"  
SortUtil.swap(data,pivotIndex,j); s7M}NA 0  
j"6:A  
int k=partition(data,i-1,j,data[j]); >KHp-|0pv  
SortUtil.swap(data,k,j); @T/qd>T o  
if((k-i)>1) quickSort(data,i,k-1); GEfY^! F+  
if((j-k)>1) quickSort(data,k+1,j); hiIya WU  
,`"K  
} ]|y}\7Aa  
/** idz9YpW  
* @param data 6Ty 3e|do  
* @param i QES^^PQe:  
* @param j YM8rJ-  
* @return p}BGw:=  
*/ -xTKdm D  
private int partition(int[] data, int l, int r,int pivot) { CPGL!:  
do{ Z+,CL/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Se/ss!If  
SortUtil.swap(data,l,r); N-Z^G<[q.  
} ,\}k~ U99  
while(l SortUtil.swap(data,l,r); _G[6+g5|  
return l;  `~h0?g  
} GVZTDrC  
"?[7#d])  
} )r pD2H  
{s9<ej~<R  
改进后的快速排序: <K,[sy&Qy  
l{QC}{Ejc2  
package org.rut.util.algorithm.support; SlN"(nq  
}v&K~!*  
import org.rut.util.algorithm.SortUtil; ( mt*y]p?  
)WclV~  
/** ?#i|>MRR>  
* @author treeroot jf8w7T  
* @since 2006-2-2 g<a<{|  
* @version 1.0 j^{b^!4~}  
*/ ?ff [$ab  
public class ImprovedQuickSort implements SortUtil.Sort { G1TANy  
2;h+;G  
private static int MAX_STACK_SIZE=4096; MU*It"@}2  
private static int THRESHOLD=10; _E (x2BS?  
/* (non-Javadoc) wE8]'o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y=|CPE%V  
*/ /wlFD,+8  
public void sort(int[] data) { :U8k|,~f  
int[] stack=new int[MAX_STACK_SIZE]; }Wqtip:L  
n@_)fFD%  
int top=-1; Zg2]GJP  
int pivot; +dJ&tuL:S  
int pivotIndex,l,r; \ JG #m  
]y}Zi/zh  
stack[++top]=0; :k\} I k  
stack[++top]=data.length-1; ~\3l!zIq  
mfz"M)1p1  
while(top>0){ w7r'SCVh3+  
int j=stack[top--]; !9PX\Xbn  
int i=stack[top--]; t)KPp|&  
,, 7.=#  
pivotIndex=(i+j)/2; y{?Kao7Ij  
pivot=data[pivotIndex]; N?zV*ngBS  
c|+y9(0|y  
SortUtil.swap(data,pivotIndex,j); dt0T t  
+~:x}QwGT  
file://partition fmBkB8  
l=i-1; k}#@8n|b  
r=j; 0xLkyt0  
do{ K(' 9l& A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); URk$}_39  
SortUtil.swap(data,l,r); JLml#Pu4  
} g4i #1V=  
while(l SortUtil.swap(data,l,r); &D)Hz  
SortUtil.swap(data,l,j); DVbYShB  
w gmWo8  
if((l-i)>THRESHOLD){ yX`J7O{=  
stack[++top]=i; KoFv0~8Q  
stack[++top]=l-1; ? 1GJa]G  
} TX&[;jsj  
if((j-l)>THRESHOLD){ 7WXiG0  
stack[++top]=l+1; (&k') ff9K  
stack[++top]=j; xS-w\vbLV  
} b#e]1Q  
X"wF Qa  
} vu44!c@  
file://new InsertSort().sort(data); } !Xf&c{7{  
insertSort(data); 1+S g"?8  
} 4^0\dq  
/** =%xIjxYl  
* @param data ta@ ISRK  
*/ "--/v. Cs  
private void insertSort(int[] data) { d4Ixuux<3  
int temp; `Y0fst<,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3Sk5I%  
} EkDws `@  
} g^qz&;R]  
} .iN-4"_j1  
vs* >onCf  
} x,}ez  
w' .'Yu6  
归并排序: W31LNysH!;  
BEFe~* ~  
package org.rut.util.algorithm.support; gfV]^v  
)8 oEs  
import org.rut.util.algorithm.SortUtil; .V7Y2!4TE  
<1TlW ~q<  
/** ' l|41wxk  
* @author treeroot dvC0 <*V  
* @since 2006-2-2 2-QuT"Gkd  
* @version 1.0 {_rZRyr  
*/ Y!bpOa&  
public class MergeSort implements SortUtil.Sort{ 3/SfUfWo  
hkkF1 h  
/* (non-Javadoc) \dC.%#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E*Pz <  
*/ <yis  
public void sort(int[] data) { 6\%r6_.d  
int[] temp=new int[data.length]; B>ms`|q=l  
mergeSort(data,temp,0,data.length-1); f34_?F<h  
} 7YoofI  
u}Lc|_ea`  
private void mergeSort(int[] data,int[] temp,int l,int r){ |~7+/VvI+  
int mid=(l+r)/2; USlF+RY@3L  
if(l==r) return ; M-{b  
mergeSort(data,temp,l,mid); vd2uD2%con  
mergeSort(data,temp,mid+1,r); wgC??Be;ut  
for(int i=l;i<=r;i++){ lpIteZw:  
temp=data; K-N]h  
} A9NOeE  
int i1=l; 5cPSv?x^F@  
int i2=mid+1; 0f_66`  
for(int cur=l;cur<=r;cur++){ 8XLxT(YFIs  
if(i1==mid+1) Y:DNu9  
data[cur]=temp[i2++]; xC= y^- 1  
else if(i2>r) Y{+zg9L*  
data[cur]=temp[i1++]; em f0sL  
else if(temp[i1] data[cur]=temp[i1++]; ;D%$Eh&oma  
else Bl>_&A)  
data[cur]=temp[i2++]; 53g8T+`\(  
} 2tm~QL  
} tI/mE[W  
x.jYip  
} 9^6|ta0;0  
<B|n<R<?  
改进后的归并排序: K,`).YK  
?$>u!V<'  
package org.rut.util.algorithm.support; /vFxVBX  
$O;N/N:m  
import org.rut.util.algorithm.SortUtil; oO!1  
(mD-FR@#  
/** 4d{"S02h  
* @author treeroot r[C3u[  
* @since 2006-2-2 D#vn {^c8O  
* @version 1.0 {hW +^  
*/ ~9`^72  
public class ImprovedMergeSort implements SortUtil.Sort { clPZd  
]be 0I)  
private static final int THRESHOLD = 10; gJ)h9e*m^  
'sT}DX(7M  
/* / K2.V@T  
* (non-Javadoc) y9l#;<b  
*  [%gK^Zt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3Hb .Z LE#  
*/ pIU#c&%<9  
public void sort(int[] data) { CSd9\V  
int[] temp=new int[data.length]; *IMF4 x5M  
mergeSort(data,temp,0,data.length-1); >oM9~7f  
} bc0)'a\  
lOowMlf@2  
private void mergeSort(int[] data, int[] temp, int l, int r) { g:~?U*f-  
int i, j, k; /iuUUCk  
int mid = (l + r) / 2; 3iwoMrp  
if (l == r) Lz#$_Am'H  
return; e')&ODQ H  
if ((mid - l) >= THRESHOLD) Mip m&5R  
mergeSort(data, temp, l, mid); U5@TaGbx  
else Egjk^:@  
insertSort(data, l, mid - l + 1); fl5UY$a2-  
if ((r - mid) > THRESHOLD) q/d5P  
mergeSort(data, temp, mid + 1, r);  1pYmtr  
else MA/"UV&M(  
insertSort(data, mid + 1, r - mid); eMpEFY  
g%fJyk'  
for (i = l; i <= mid; i++) { vV:M S O'r  
temp = data; )<]w23i  
} 6N)< o ;U  
for (j = 1; j <= r - mid; j++) { ~vjr;a(B  
temp[r - j + 1] = data[j + mid]; .yFg$|yG  
} ei|*s+OZu  
int a = temp[l]; M&}oat*  
int b = temp[r]; _Vk,&'  
for (i = l, j = r, k = l; k <= r; k++) { }Uqa8&  
if (a < b) { ?@g;[310`  
data[k] = temp[i++]; IgHs&=  
a = temp; 61s2bt#  
} else { R&x7Iq:=D  
data[k] = temp[j--]; }LHT#{+ x  
b = temp[j]; \Z6gXO_  
} `ykMh>*{  
} XEgx#F ;F  
} uV/HNzC  
.JD4gF2N  
/** mER8> <  
* @param data {'=Nb 5F  
* @param l U4^p({\|-  
* @param i %Zv(gI`A  
*/ H>X\C;X[  
private void insertSort(int[] data, int start, int len) { ^NnU gj  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nY"rqILX?  
} l6}b{e  
} D<D k1  
} m|e*Jc  
} @dT: 1s  
D"( 3VIglq  
堆排序: TW-zh~|F  
g.`t!6Hc  
package org.rut.util.algorithm.support; wCC~tuTpr  
^]sMy7X0IK  
import org.rut.util.algorithm.SortUtil; 23u1nU[0  
#1qVFU  
/** D?*sdm9r`  
* @author treeroot wTMHoU*>  
* @since 2006-2-2 G|6|;   
* @version 1.0 qeK  
*/ Z 9 q{r s  
public class HeapSort implements SortUtil.Sort{ 13_+$DhU-L  
}JpslY*aS  
/* (non-Javadoc) OCOO02Wq1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yZ(Nv $[5  
*/ yK>0[6l  
public void sort(int[] data) { q:~`7I  
MaxHeap h=new MaxHeap(); qY~$wVY(  
h.init(data); hO<w]jV,  
for(int i=0;i h.remove(); meM.?kk(  
System.arraycopy(h.queue,1,data,0,data.length); +v[$lh+  
} Oz9Mqcx  
Y4 ~wNs6  
private static class MaxHeap{ !>kv.`|7~  
sKG~<8M}  
void init(int[] data){ i37a}.;  
this.queue=new int[data.length+1]; ]stLC; nI  
for(int i=0;i queue[++size]=data; fFTvf0j  
fixUp(size); B,m$ur#$  
} }2!5#/^~  
} X^_+%U  
xO9]yULgu  
private int size=0; Z\gg<Q  
9snyX7/!L  
private int[] queue; '__3[D  
ZNH*[[Pf  
public int get() { 4M<JfD  
return queue[1]; f{ 4G  
} |<Dx  
}A'<?d8   
public void remove() { ,w/mk$v  
SortUtil.swap(queue,1,size--); n XeK,C  
fixDown(1); 5N3!!FFE  
} HfeflGme*  
file://fixdown ]R0A{+]n  
private void fixDown(int k) { luz%FY:  
int j; [|;Zxb:  
while ((j = k << 1) <= size) { ':R3._tw\  
if (j < size %26amp;%26amp; queue[j] j++; I9G*iu=U   
if (queue[k]>queue[j]) file://不用交换 /&!d  
break; ZEyGqCf3  
SortUtil.swap(queue,j,k); R#Nd|f<  
k = j; 7%"\DLA  
} uSQ>oi]  
} \F+o=  
private void fixUp(int k) { =|JIY  
while (k > 1) { LX?r=_\  
int j = k >> 1; N5an9r&z(1  
if (queue[j]>queue[k]) 0) Um W{  
break; VU0tyj$  
SortUtil.swap(queue,j,k); .]ZuG  
k = j; =UKR<@QrK  
} .gkPG'm[  
} Md?bAMnG+}  
_kY[8e5  
} dV=5_wXZ$  
6r-n6#=  
} 3w:Z4]J  
0|>  
SortUtil: |e[0Qo@  
xjbyI_D  
package org.rut.util.algorithm; 0S5C7df  
_} 9R}  
import org.rut.util.algorithm.support.BubbleSort; >=W#z  
import org.rut.util.algorithm.support.HeapSort; JO^ [@  
import org.rut.util.algorithm.support.ImprovedMergeSort; s riq(A  
import org.rut.util.algorithm.support.ImprovedQuickSort; nh&<fnh  
import org.rut.util.algorithm.support.InsertSort; >dm._*M  
import org.rut.util.algorithm.support.MergeSort; '%RK KA  
import org.rut.util.algorithm.support.QuickSort; I~ ]mX;  
import org.rut.util.algorithm.support.SelectionSort; MbFe1U]B  
import org.rut.util.algorithm.support.ShellSort; #|_UA}Y  
AW;) _|xM  
/** '>mb@m  
* @author treeroot Di"9 M(6vf  
* @since 2006-2-2 &?Z)V-1H  
* @version 1.0 Jx>B %vZ\  
*/ pD6g+Taj  
public class SortUtil { m^x\@!N:(  
public final static int INSERT = 1; q.b4m 'J  
public final static int BUBBLE = 2; PXu<4VF  
public final static int SELECTION = 3; g!Yh=kA'N  
public final static int SHELL = 4; pfQZ|*>lkb  
public final static int QUICK = 5; Hi" n GH  
public final static int IMPROVED_QUICK = 6; l}-`E@w  
public final static int MERGE = 7; /Vd#q)b%T  
public final static int IMPROVED_MERGE = 8; 1Da [!^u,D  
public final static int HEAP = 9; _xL&sy09t  
-+_aL4.  
public static void sort(int[] data) { -Fc#  
sort(data, IMPROVED_QUICK); $H@)hY8wA  
} p'!,F; xX  
private static String[] name={ p{svXP K  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W#_gvW  
}; 4NR5?s  
5a|m}2IX  
private static Sort[] impl=new Sort[]{ NE%yv,B  
new InsertSort(), C(*@-N pf[  
new BubbleSort(), x&/Syb  
new SelectionSort(), $,zM99  
new ShellSort(), O8N0]Mz  
new QuickSort(), L?C~ qS2g  
new ImprovedQuickSort(), @=#s~ 3  
new MergeSort(), Z*aU2Kr`;  
new ImprovedMergeSort(), [%,=0P}  
new HeapSort() PyxN_agf  
}; $5CY<,f  
9x^ /kAB  
public static String toString(int algorithm){ ~)IJE+e>}  
return name[algorithm-1]; WJ4UJdf'  
} @%G"i:HZ&  
R/cq00g  
public static void sort(int[] data, int algorithm) { Jd2Y)  
impl[algorithm-1].sort(data); V+~{a:8[pq  
} iwjl--)@K  
5qfKV&D  
public static interface Sort { 2OlC7X{  
public void sort(int[] data); {!Z_&i5  
} U105u.#7  
u,SZ-2K!7~  
public static void swap(int[] data, int i, int j) { dB)hW'J?  
int temp = data; WM )g(i~(  
data = data[j]; Q R$sIu@%  
data[j] = temp; 4m!3P"$  
} j?hyN@ns  
} pz}hh^]t  
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