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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。 W} ofAkF  
插入排序: s,_m{ to  
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package org.rut.util.algorithm.support; NX&_p!_V  
dQG=G%W  
import org.rut.util.algorithm.SortUtil; \ 6MCxh6  
/** bhs _9ivw  
* @author treeroot gI`m.EH}}N  
* @since 2006-2-2 >.D4co>  
* @version 1.0 u]G\H!Wk Q  
*/ )YI(/*+]  
public class InsertSort implements SortUtil.Sort{ A?0Nm{O;3v  
O33 `+UV"W  
/* (non-Javadoc) &9>vl*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %]7d`/  
*/ CU~PT.  
public void sort(int[] data) { Kf-JcBsrT  
int temp; onV>.7sG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Fs^Mw g o  
} Y|/ 8up  
} VS|2|n1<6  
} YHl;flv  
.ccp  
} VG~Vs@c(  
KG{St{uJ  
冒泡排序: ,iwp,=h=  
IUct  
package org.rut.util.algorithm.support; EBmt9S  
nT)vNWT=  
import org.rut.util.algorithm.SortUtil; /wlEe>i  
B|X!>Q<g  
/** -%4,@ x`  
* @author treeroot @[v~y"tE}  
* @since 2006-2-2 ,wPr"U+7  
* @version 1.0 9Gz=lc[!7  
*/ =?`c=z3~i$  
public class BubbleSort implements SortUtil.Sort{ ]]Ufas9  
q75s#[<ap  
/* (non-Javadoc) Yoll?_k+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x$(f7?s] 1  
*/ HtYwEjI  
public void sort(int[] data) { e8 b:)"R  
int temp; Vf1^4 t  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P1f[% 1  
if(data[j] SortUtil.swap(data,j,j-1); K~ EmD9  
} kAGBdaJ"  
} Jfl!#UAD|n  
} +qdEq_ m  
} <=C?e<Y  
@=f\<"$vt  
} 3irl (;v  
'/%H3A#L  
选择排序: H" 7u7l  
k~z Iy;AZ  
package org.rut.util.algorithm.support; 2I{"XB  
pI<f) r  
import org.rut.util.algorithm.SortUtil; l}M!8:UzU  
1m0c|ckb  
/** Z<{QaY$"  
* @author treeroot dUdT7ixo  
* @since 2006-2-2 5Jnlz@P9  
* @version 1.0 )Xyn q(  
*/ Yz)qcU  
public class SelectionSort implements SortUtil.Sort { J<lO= +mg  
oe~b}:  
/* f(7GX3?  
* (non-Javadoc) ~flV`wy$$1  
* Fv`,3aNB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sW8dPw O  
*/ "tpSg  
public void sort(int[] data) { Q=yg8CQ  
int temp; [)X\|pO&  
for (int i = 0; i < data.length; i++) { Z;)%%V%o  
int lowIndex = i; h2J x]FJ  
for (int j = data.length - 1; j > i; j--) { eh#(eua0/  
if (data[j] < data[lowIndex]) { vs{s_T7Mz]  
lowIndex = j; R0-j5&^jju  
} lU8Hd|@-  
} K!l5coM  
SortUtil.swap(data,i,lowIndex); a7%]Y}$  
} |]*/R^1>2  
} ;i+#fQO7Q  
8DaL,bi*.  
} uWE^hz"  
lks!w/yCF  
Shell排序: \xoP)Ub>  
"kqPmeI  
package org.rut.util.algorithm.support; QkC(uS  
U~7c+}:c  
import org.rut.util.algorithm.SortUtil; ufT`"i  
m&yJzMW|  
/** '1/i"yoW  
* @author treeroot |$_sX9\`?|  
* @since 2006-2-2 @U}1EC{A  
* @version 1.0 H} g{Cr"Ex  
*/ |LKXOU c  
public class ShellSort implements SortUtil.Sort{ jWfa;&Ra  
u\JNr}bL  
/* (non-Javadoc) 3sZ\0P}   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _zMW=nypdx  
*/ xKp4*[}m  
public void sort(int[] data) { m`r(p"  
for(int i=data.length/2;i>2;i/=2){ 3=ymm^  
for(int j=0;j insertSort(data,j,i); hY8reQp1  
} VyGJ=[ ]  
} N ZSSg2TX#  
insertSort(data,0,1); UFuX@Lu0  
} .kfI i^z  
&@YmA1Yu)E  
/** 45>?o  
* @param data {Y9q[D'g.  
* @param j 7D5]G-}x.  
* @param i sD wqH.L  
*/ lHX72s|V  
private void insertSort(int[] data, int start, int inc) { 8}UI bF  
int temp; b|W=pSTY  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $E.I84UfX  
} N]sAji*  
} ?FcAXA/J{  
} C;urBsC  
uGlUc<B\*  
} q'8 2qY  
HHsmLo c4  
快速排序: U4B( #2'  
M =r)I~  
package org.rut.util.algorithm.support; 5XB H$&Td  
Ph> %7M%  
import org.rut.util.algorithm.SortUtil; +srGN5!  
J/*`7Pd  
/** gB'6`'  
* @author treeroot JaGtsi9%.  
* @since 2006-2-2 E?0%Z&1h  
* @version 1.0 }pu27F)&  
*/ LFtt gY  
public class QuickSort implements SortUtil.Sort{ K(Bf2Mfq  
Dm<A ^u8  
/* (non-Javadoc) n6a`;0f[R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kW&TJP+5*  
*/ ^ r,=vO  
public void sort(int[] data) { y h9*z3  
quickSort(data,0,data.length-1); 9qG6Pb  
} BF{Y"8u$  
private void quickSort(int[] data,int i,int j){ b1?'gn~  
int pivotIndex=(i+j)/2; Jze:[MYS  
file://swap dlTt _.  
SortUtil.swap(data,pivotIndex,j); )hfpwdQ  
omBoo5e  
int k=partition(data,i-1,j,data[j]); s!7y  
SortUtil.swap(data,k,j); k+pr \d~  
if((k-i)>1) quickSort(data,i,k-1); `+Q%oj#FF  
if((j-k)>1) quickSort(data,k+1,j); j8lb~0JD  
C>*u()q>4h  
} ?<'}r7D   
/** #4 pB@_  
* @param data hQDXlFHT  
* @param i r\V ={p  
* @param j OpYY{f  
* @return AkQ ~k0i}b  
*/ !d0kV,F:  
private int partition(int[] data, int l, int r,int pivot) { %OOl'o"V{s  
do{ `RL"AH:+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j#q-^h3H  
SortUtil.swap(data,l,r); .ctw2x5W  
} [3|P7?W/  
while(l SortUtil.swap(data,l,r); 03#lX(MB  
return l; ut7zVp<"  
} [K0(RDV)%  
K(,F~ .<  
} x+@rg];m  
N5b!.B x-w  
改进后的快速排序: HCC#j9UN6  
@r/n F5  
package org.rut.util.algorithm.support; wcY? rE9  
?2Py_gkf  
import org.rut.util.algorithm.SortUtil; L0WN\|D  
b B3powy9  
/** UrEs4R1#  
* @author treeroot : E )>\&  
* @since 2006-2-2 Qjv}$`M  
* @version 1.0 bAtSVu  
*/ 7! INkH]  
public class ImprovedQuickSort implements SortUtil.Sort { 5taT5?n2  
7\Y0z  
private static int MAX_STACK_SIZE=4096; P?of<i2E  
private static int THRESHOLD=10; ExL0?FemWV  
/* (non-Javadoc) L>4"(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -4{<=y?"a  
*/ LuvY<~u  
public void sort(int[] data) { (V67`Z )  
int[] stack=new int[MAX_STACK_SIZE]; .jjG(L  
H ]Z$OpI  
int top=-1; tG22#F`  
int pivot; t=W}SH  
int pivotIndex,l,r; mSl.mi(JiZ  
Trz@~d/[,n  
stack[++top]=0; ok\vQs(a  
stack[++top]=data.length-1; hy"\RW  
0[?Xxk}s0  
while(top>0){ ?QdWrE_  
int j=stack[top--]; PP33i@G  
int i=stack[top--]; >V8-i`  
9 X`Sm}i  
pivotIndex=(i+j)/2; fN1-d&T  
pivot=data[pivotIndex]; SbrecZ  
)W _v:?A9  
SortUtil.swap(data,pivotIndex,j); x\G'kEd  
o9yJf#-En  
file://partition dn$!&  
l=i-1; z/2//mM  
r=j; A0 C,tVd  
do{ 3eAX.z`D  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >$/>#e~  
SortUtil.swap(data,l,r); mLLDE;7|}  
} 9gK` E  
while(l SortUtil.swap(data,l,r); M\Ye<Tk  
SortUtil.swap(data,l,j); HJ[cM6$2  
O:{~urV  
if((l-i)>THRESHOLD){ #yF&X(%  
stack[++top]=i; a fW@T2  
stack[++top]=l-1; L2i_X@/  
} Pw`8Wj  
if((j-l)>THRESHOLD){ wIaony  
stack[++top]=l+1; ?Z[[2\DR  
stack[++top]=j; 0gP}zM73  
}  B Qxs~  
ag;pN*z  
} oDAXiY$u  
file://new InsertSort().sort(data); g(7rTyp4)  
insertSort(data); ?ri?GmI|  
} Ww+IWW@  
/** 2*l/3VW  
* @param data ZI}Fom<  
*/ l'E*=Rn  
private void insertSort(int[] data) { paE[rS\  
int temp; 3J|F?M"N7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nRZ]z( b  
} 8COGsWK  
} V1 `o%;j  
} RmeD$>7  
K+K#+RBK  
} (Y?gn)*t  
&>W$6>@  
归并排序: j[G  
$2M$?4S/T  
package org.rut.util.algorithm.support; Y0dEH^I  
x,@B(9No  
import org.rut.util.algorithm.SortUtil; Gd xnpE  
V]e8a"/[{  
/** Eib5  
* @author treeroot /cQueUME`  
* @since 2006-2-2 _P 3G  
* @version 1.0 ND#Yen ye  
*/ i0kak`x0  
public class MergeSort implements SortUtil.Sort{ }t=!(GOb}  
}9#r0Vja  
/* (non-Javadoc) pis`$_kmwV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1N#| }ad  
*/ }Gm>`cw-  
public void sort(int[] data) { S8wLmd>  
int[] temp=new int[data.length]; N&+x+;Kx  
mergeSort(data,temp,0,data.length-1); ^]0Pfna+N  
} :tB1D@Cb6  
c&?m>2^6  
private void mergeSort(int[] data,int[] temp,int l,int r){ Sc1 8dC0  
int mid=(l+r)/2; gpvYb7Of0  
if(l==r) return ; kY|utoAP  
mergeSort(data,temp,l,mid); H.|#c^I  
mergeSort(data,temp,mid+1,r); (Ag1 6  
for(int i=l;i<=r;i++){ gw3K+P  
temp=data; %G/ hD  
} ^?7-r6  
int i1=l; +-U- D?-  
int i2=mid+1;  Rn(ec  
for(int cur=l;cur<=r;cur++){ < #}5IQ5`Z  
if(i1==mid+1) ~IfJwBn-i  
data[cur]=temp[i2++]; tGh~!|P  
else if(i2>r) aFb==73aLw  
data[cur]=temp[i1++]; .B]MpmpK  
else if(temp[i1] data[cur]=temp[i1++]; IS{wtuA.  
else ~Z?TFg  
data[cur]=temp[i2++]; M4oy  
} wc NOLUl  
} HJLG=mU  
G )trG9 .a  
} gx8ouOh  
k"T}2 7  
改进后的归并排序: $m%f wB  
Bs_s&a>  
package org.rut.util.algorithm.support; :bu/^mW[  
V6&!9b  
import org.rut.util.algorithm.SortUtil; Yz/md1T$  
+`7i 'ff  
/** %S@ZXf~:  
* @author treeroot \K{0L  
* @since 2006-2-2 QQ*hCyw!  
* @version 1.0 XSe=sHEI  
*/ 0d"[l@UU0  
public class ImprovedMergeSort implements SortUtil.Sort { 7$vYo _  
a LroD$#  
private static final int THRESHOLD = 10; mPtZO*Fc  
EyD=q! ZVZ  
/* q77;ZPfs8  
* (non-Javadoc) /ivJsPH  
* Pmr5S4Ka  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B:;pvW]  
*/ 8>2.UrC  
public void sort(int[] data) { j9x<Y]  
int[] temp=new int[data.length]; fcRxp{*zO  
mergeSort(data,temp,0,data.length-1); _"Dv uR  
} 7a =gH2]&  
zl>nSndRE  
private void mergeSort(int[] data, int[] temp, int l, int r) { fo*2:?K&  
int i, j, k; \Xt7`I<  
int mid = (l + r) / 2; hLd^ agX  
if (l == r) '8RsN-w  
return; zUkgG61  
if ((mid - l) >= THRESHOLD) dUeN*Nq&(,  
mergeSort(data, temp, l, mid); 55nlg>j  
else R[h9"0Y^  
insertSort(data, l, mid - l + 1); g|DF[  
if ((r - mid) > THRESHOLD) q1$N>;&  
mergeSort(data, temp, mid + 1, r); p*R;hU  
else }{K) 4M  
insertSort(data, mid + 1, r - mid); Fh?gNSWq6  
??-[eB.  
for (i = l; i <= mid; i++) { 0U(@= 7V  
temp = data; {3>$[bT  
} Ga-k  
for (j = 1; j <= r - mid; j++) { :j9l"5"  
temp[r - j + 1] = data[j + mid]; zH?!  
} VuhGx:Xl  
int a = temp[l]; *KZYv=s,u  
int b = temp[r]; ?mwt~_s9  
for (i = l, j = r, k = l; k <= r; k++) { ]^.  _z  
if (a < b) { RVnjNy;O`  
data[k] = temp[i++]; iW]j9}t  
a = temp; v}}F,c(f  
} else { 7Utn\l  
data[k] = temp[j--]; b$d;Qx  
b = temp[j]; 'Vzp2  
}  acajHs  
} [i21FX  
} `quw9j9`C\  
L:KF_W.I+  
/** 9|^2",V  
* @param data >a!/QMh  
* @param l )#0O>F~  
* @param i >Eyt17_H"n  
*/ |sJ[0z  
private void insertSort(int[] data, int start, int len) { *.ll<p+(-  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); !_]Y~[  
} d\&U*=  
} /kZebNf6H  
} e&|'I"  
} @ wGPqg  
SB;&GHq"n  
堆排序: .9/ hHCp  
;V:i!u u  
package org.rut.util.algorithm.support; &&5aM  
j"t(0 m  
import org.rut.util.algorithm.SortUtil; WrnrFz  
g+8OekzB5  
/** du $:jN\}  
* @author treeroot 4qb/da E:Z  
* @since 2006-2-2 SXSgld2uS  
* @version 1.0 I13y6= d  
*/ bQzZy5,  
public class HeapSort implements SortUtil.Sort{ j2t7'bO_  
e@L=LW>  
/* (non-Javadoc) @+&LYy72  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x 77*c._3v  
*/ WA<v9#m  
public void sort(int[] data) { \#8D>i?m  
MaxHeap h=new MaxHeap(); sNbxI|B  
h.init(data); JinUV6cr  
for(int i=0;i h.remove(); s$zLiQF;  
System.arraycopy(h.queue,1,data,0,data.length); b <tNk]7  
} S*,17+6dV  
sf:,qD=z  
private static class MaxHeap{ !4ocZmj\  
KaLzg5is  
void init(int[] data){ Z\(q@3C  
this.queue=new int[data.length+1]; -vAC"8)S  
for(int i=0;i queue[++size]=data; AmUr.ofu  
fixUp(size); SpIv#?  
} [$ubNk;!z  
} lB8-Z ow  
@f_Lp%K  
private int size=0; I }a`0Y&{  
")1:F>  
private int[] queue; o@_q]/Mh  
y B81f  
public int get() { ~T"Rw2v b  
return queue[1]; H9Gh>u]}  
} RF?`vRZOe  
sbfuzpg]*  
public void remove() { O0*p0J  
SortUtil.swap(queue,1,size--); F;Spi  
fixDown(1); `_6C {<O  
} K6)Gc%:`  
file://fixdown v1#otrf  
private void fixDown(int k) { IY1 //9  
int j; 8$] 1M,$r  
while ((j = k << 1) <= size) { j}#w )M  
if (j < size %26amp;%26amp; queue[j] j++; Q8$}@iA[  
if (queue[k]>queue[j]) file://不用交换 Ex.yU{|c  
break; XMCXQs&  
SortUtil.swap(queue,j,k); SjK  
k = j; !K#qeY}  
} a)!o @  
} oe ~'o'  
private void fixUp(int k) { :ffY6L+  
while (k > 1) { HRpte=`q  
int j = k >> 1; f'F?MINJP  
if (queue[j]>queue[k]) Q*GN`07@?d  
break; k x8G  
SortUtil.swap(queue,j,k); `](e:be}  
k = j; NYhB'C2  
} RV1coC.g4x  
} i}(LqcYU  
Do9x XK  
} M.JA.I@XC  
`T1  
} g%aYDl  
W PC]%:L"  
SortUtil: .zf~.R;>  
gZVc 5u<  
package org.rut.util.algorithm; &L3M]  
]|#+zx|/D  
import org.rut.util.algorithm.support.BubbleSort; {aZ0;  
import org.rut.util.algorithm.support.HeapSort; RCJ|P~*  
import org.rut.util.algorithm.support.ImprovedMergeSort; IM*y|UHt  
import org.rut.util.algorithm.support.ImprovedQuickSort; g/4[N{Xf  
import org.rut.util.algorithm.support.InsertSort; (xycJ`N  
import org.rut.util.algorithm.support.MergeSort; ?C]vS_jAh  
import org.rut.util.algorithm.support.QuickSort; ??5Q)Erm1  
import org.rut.util.algorithm.support.SelectionSort; pG_;$8Hc  
import org.rut.util.algorithm.support.ShellSort; k``_EiV4t  
pt?bWyKG  
/** R- X5K-  
* @author treeroot ]43/`FX  
* @since 2006-2-2 L]7=?vN=8  
* @version 1.0 />C^WQI^  
*/ +8T?{K  
public class SortUtil { "%)qRe  
public final static int INSERT = 1; \Zk;ikEY  
public final static int BUBBLE = 2; cUk7i`M;6  
public final static int SELECTION = 3; `Uq#W+r,  
public final static int SHELL = 4; vN}#Kc\  
public final static int QUICK = 5; O}gV`q;  
public final static int IMPROVED_QUICK = 6; ~ZaY!(R<  
public final static int MERGE = 7; eNh39er  
public final static int IMPROVED_MERGE = 8; ^+ml5m  
public final static int HEAP = 9; t6rRU~;}  
KA5v+~  
public static void sort(int[] data) { m5n #v  
sort(data, IMPROVED_QUICK); qyb?49I  
} H;mSkRD3N  
private static String[] name={ VD AaYDi  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "37lx;CH  
}; _=r6=.  
/*~EO{o  
private static Sort[] impl=new Sort[]{ $B+8Of  
new InsertSort(), PJ')R:e,  
new BubbleSort(), |*Yr<zt  
new SelectionSort(), f^3*)Ni  
new ShellSort(), Xc ++b|k  
new QuickSort(), +:2klJ  
new ImprovedQuickSort(),  l03B=$  
new MergeSort(), 2F[ q).  
new ImprovedMergeSort(), S E<FL/x1#  
new HeapSort() ]Ee?6]bN  
}; VO5#Qgen  
^^u5*n+5  
public static String toString(int algorithm){ y G~?MEh{  
return name[algorithm-1]; _{ue8kGt  
} ,O5NLg-  
~i= _J3'  
public static void sort(int[] data, int algorithm) { I@\lN&HC  
impl[algorithm-1].sort(data); BkAm/R  
} pp?D7S  
m[osg< CR_  
public static interface Sort { TvoyZW\?w  
public void sort(int[] data); >-?f0 K  
} E, Z$pKL?  
5PCqYN(:B  
public static void swap(int[] data, int i, int j) { `?H]h"{7Q  
int temp = data; :9afg  
data = data[j]; (M|Dx\_  
data[j] = temp; =HK!(C  
} u~N?N W Q  
} 3m[vXr?  
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