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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。 ?@LqrKj 11  
插入排序: zEN3N n.8  
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package org.rut.util.algorithm.support; iwS55o  
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import org.rut.util.algorithm.SortUtil; c3]X#Qa#m$  
/** 7ElU5I<S  
* @author treeroot 2ms@CQy(00  
* @since 2006-2-2 WPbG3FrL!  
* @version 1.0 >J,y1jzJ  
*/ \I[50eh|  
public class InsertSort implements SortUtil.Sort{ GO<,zOqvU  
"B"Yfg[  
/* (non-Javadoc) ( {}Z '  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *%;+3SV  
*/ RwyRPc _  
public void sort(int[] data) { `Eq~W@';Q0  
int temp; MeMSF8zSQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f tE2@}  
} w0(1o_F7.  
} ;eQOBGX9  
} (m%A>e B  
Htn''adg5  
} i?0+f }5<p  
,UE>@;]  
冒泡排序: KYN{Dh]-}  
r< ~pSj  
package org.rut.util.algorithm.support; 9f U,_`r  
ZA{T0:  
import org.rut.util.algorithm.SortUtil; h =E)5&Z  
LUN"p#1  
/** Fh0cOp(  
* @author treeroot U\~9YX8  
* @since 2006-2-2 Z36C7 kw  
* @version 1.0 S#{gCc  
*/ |b^+= "  
public class BubbleSort implements SortUtil.Sort{ T\3a T  
5N.-m;s  
/* (non-Javadoc) O4lHR6M2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {.mP e|  
*/ i0/RvrLc  
public void sort(int[] data) { TP R$oO2  
int temp; f:hsE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !${7)=|=1  
if(data[j] SortUtil.swap(data,j,j-1); !]*Cwbh. u  
} ?=#vp /  
} JDp{d c  
} yMVlTO  
} ;FfDi*S7  
3 jR I@  
} mMSQW6~j  
<g3)!VR^q  
选择排序: C(@#I7G  
mJN*DP{  
package org.rut.util.algorithm.support; H.=S08c3kA  
g*]/HS>e<G  
import org.rut.util.algorithm.SortUtil; x4=Sm0Ro|V  
hw9qnSeRy  
/** oQ:.pq{T  
* @author treeroot su\iUi  
* @since 2006-2-2 aTLu7C\-e  
* @version 1.0 INjr$'*  
*/ 2*)2c[/0F  
public class SelectionSort implements SortUtil.Sort { K~6,xZlDWM  
VxA?LS`  
/* Ql8s7%  
* (non-Javadoc) Vz @2_k   
* vmsrypm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %pG^8Q()   
*/ [~&yLccN  
public void sort(int[] data) { uw>O|&!  
int temp; orON)S ks  
for (int i = 0; i < data.length; i++) { c0aXOG^  
int lowIndex = i; u/_TR;u= q  
for (int j = data.length - 1; j > i; j--) { "\`>Ll  
if (data[j] < data[lowIndex]) { 3Z%~WE;I  
lowIndex = j; qEJ#ce]G  
} 1LZ[i89&%  
} ~;S  
SortUtil.swap(data,i,lowIndex); DV{0|E  
} }N,$4h9Dj  
} +, |aIF  
sFbN)Cx  
} <N'v-9=2jl  
XDQ5qfE|  
Shell排序: c$P68$FB  
JEh(A=Eu>  
package org.rut.util.algorithm.support; kVe4#LT  
#UesXv  
import org.rut.util.algorithm.SortUtil; &m=73 RN  
{16]8-pe  
/** R(AS$<p{!>  
* @author treeroot h ]6: `5-  
* @since 2006-2-2 J5Ovj,[EZ  
* @version 1.0 Y!qn[,q8  
*/ r7^oqEp@B  
public class ShellSort implements SortUtil.Sort{ H5!e/4iz  
1tIJ'#6  
/* (non-Javadoc) 4^(aG7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N}gPf i  
*/ Q&]f9j_  
public void sort(int[] data) { fvBL? x  
for(int i=data.length/2;i>2;i/=2){ f"RS,]  
for(int j=0;j insertSort(data,j,i); sXaudT  
} N3(.7mxo  
} l9t|@9  
insertSort(data,0,1); v|Y ut~  
} B&L-Lc2  
xQ,My  
/** urhOvC$a  
* @param data A@<a')#>)  
* @param j 8}K^o>J&K  
* @param i CuT50N;tk  
*/ Rn$[P.||  
private void insertSort(int[] data, int start, int inc) { {&ykpu090  
int temp; \@B 'f  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0PD=/fh[  
} _)kTlX:,  
} U!i1~)s  
} r#'ug^^k$X  
%zz,qs)Eu  
} XY^]nm-{I  
 35%\"Y?  
快速排序: %E2b{Y;  
~JQ6V?fucD  
package org.rut.util.algorithm.support; p|+TgOYOc  
aqEmF  
import org.rut.util.algorithm.SortUtil; {/}%[cY =  
D/YMovH%  
/** i_e%HG  
* @author treeroot yu>)[|-  
* @since 2006-2-2 oJ?,X^~_  
* @version 1.0 PH$C."Vv  
*/ U'aJCM  
public class QuickSort implements SortUtil.Sort{ 19b@QgfWpb  
es^@C9qt  
/* (non-Javadoc) QpD- %gN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jS ?#c+9  
*/ ShesJj  
public void sort(int[] data) { V+5av Z}  
quickSort(data,0,data.length-1); v`@M IOv  
} %uw7sGz\  
private void quickSort(int[] data,int i,int j){ &WNIL13DK  
int pivotIndex=(i+j)/2; fE"-W{M  
file://swap sBk|KG  
SortUtil.swap(data,pivotIndex,j); 7 !dj&?  
m6uFmU*<M}  
int k=partition(data,i-1,j,data[j]); <?F-v  
SortUtil.swap(data,k,j); UC_o;  
if((k-i)>1) quickSort(data,i,k-1); Ggry,3X3  
if((j-k)>1) quickSort(data,k+1,j); JNv@MJb}  
"`NAg  
} ]P/i}R:  
/** #>M^BOR8  
* @param data K7R!E,oPg  
* @param i 2m^qXE$  
* @param j h~lps?.#b  
* @return H'+3<t>  
*/ !dq$qUl/  
private int partition(int[] data, int l, int r,int pivot) { *ze,X~8-  
do{ Re+oCJ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )#8}xAjV  
SortUtil.swap(data,l,r); 6 2#@Y-5  
} L*OG2liJ  
while(l SortUtil.swap(data,l,r); U+R9bn   
return l; vnWt8?)]^  
} (8baa.ge  
EU7nS3K)O~  
} RN&6z"|jR  
EM(%|#  
改进后的快速排序: ,xg-H6Xfa{  
T|,/C|L  
package org.rut.util.algorithm.support; .W\JvPTC  
+%H=+fJ2}  
import org.rut.util.algorithm.SortUtil; &NOCRabc  
@?>5~  
/** eA*We  
* @author treeroot fA"c9(>m%]  
* @since 2006-2-2 k t'[  
* @version 1.0  //0Y#"  
*/ :k-@w5(  
public class ImprovedQuickSort implements SortUtil.Sort { g/(BV7V  
*eGG6$I  
private static int MAX_STACK_SIZE=4096; -<L5;  
private static int THRESHOLD=10; wrc1N?[bn  
/* (non-Javadoc) 8"TlWHF`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R xS{  
*/ W[sQ_Z1C  
public void sort(int[] data) { z%BX^b$Hj  
int[] stack=new int[MAX_STACK_SIZE]; >;lrH&  
-24ccN;  
int top=-1; M3Qi]jO98  
int pivot; Cn0s?3Fm  
int pivotIndex,l,r; HQwrb HS  
=d+`xN*  
stack[++top]=0; hXvC>ie(i  
stack[++top]=data.length-1; ;66{S'*[  
m#ig.z|A  
while(top>0){ Vju/+  
int j=stack[top--]; \r9E6LL X'  
int i=stack[top--]; #l h' !  
Qsw.429t  
pivotIndex=(i+j)/2; VCVKh  
pivot=data[pivotIndex]; nch#DE8 2  
Khl0~  
SortUtil.swap(data,pivotIndex,j); 6q8PLyIp  
r9*6=*J|  
file://partition YeVo=hYH@  
l=i-1; EEMRy  
r=j; \GV'{W+o2  
do{ ;O|u`fAqT  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u@P1`E1Q  
SortUtil.swap(data,l,r); OsW*@v(  
} &bGf{P*Da  
while(l SortUtil.swap(data,l,r); d,o*{sM5d  
SortUtil.swap(data,l,j); bN6i*) }  
)?I*zc  
if((l-i)>THRESHOLD){ c[T@lz(!  
stack[++top]=i; cltx(C>   
stack[++top]=l-1; qA[cF$CIl)  
} mN> (n+ly  
if((j-l)>THRESHOLD){ Q+/P>5O/  
stack[++top]=l+1; : sw@1  
stack[++top]=j; z`eMb  
} :Gzp (@<@e  
f]mVM(XZN  
} R\Ckk;<$  
file://new InsertSort().sort(data); R](cko=  
insertSort(data); }#2(WHf =<  
} 6y "]2UgQk  
/** )TyP{X>  
* @param data ]omBq<ox'Y  
*/ 'vYt_T  
private void insertSort(int[] data) { !]5V{3  
int temp; fQwLx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \/C5L:|p_  
} wCV~9JTJ!  
} u?rX:KkS  
} bvHQ# :}H  
j/F('r~L  
} kem(U{m  
A`Rs n\  
归并排序: F\v~2/J5v  
So75h*e  
package org.rut.util.algorithm.support; rg=Ym.  
K`j:F>b  
import org.rut.util.algorithm.SortUtil; aL&9.L|1 g  
NTO.;S|2%  
/** xZM4CR9]*C  
* @author treeroot B#}EYY  
* @since 2006-2-2 sl(go^  
* @version 1.0 yhI;FNSf  
*/ ]rNxvFN*j  
public class MergeSort implements SortUtil.Sort{ ];5Auh 0o  
(9=E5n6o  
/* (non-Javadoc) /1D.Ud^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i)Q d>(v  
*/ G'';VoW=   
public void sort(int[] data) { =;F7h @:  
int[] temp=new int[data.length]; FD~ U F;VQ  
mergeSort(data,temp,0,data.length-1); s,pg4nst56  
} NxDVU?@p*  
m8G/;V[x  
private void mergeSort(int[] data,int[] temp,int l,int r){ fU\;\  
int mid=(l+r)/2; a,)/D_{1  
if(l==r) return ; f! )yE`4-  
mergeSort(data,temp,l,mid); 'i:lV'  
mergeSort(data,temp,mid+1,r); 86!$<!I  
for(int i=l;i<=r;i++){  DO9K  
temp=data; f"NWv!  
} SG1AYUs V  
int i1=l; g[ uf e<  
int i2=mid+1; O(9*VoD  
for(int cur=l;cur<=r;cur++){ gjFQDrz(  
if(i1==mid+1) ?<5KLvGv  
data[cur]=temp[i2++]; QAMcI:5  
else if(i2>r) rhX?\_7o  
data[cur]=temp[i1++]; TJ>1?W\Z  
else if(temp[i1] data[cur]=temp[i1++]; vA[7i*D{w  
else ,7DyTeMpN  
data[cur]=temp[i2++]; 94]i|2qj*  
} y+V>,W)r7  
} cM4{ e^  
#yU"n-eLR  
} (ip3{d{CT]  
pp{GaCi  
改进后的归并排序: e**'[3Y  
*65~qAd  
package org.rut.util.algorithm.support; ( z F_<  
\hb$v  
import org.rut.util.algorithm.SortUtil; `2^(Ss# )  
83p8:C.Ze  
/** CC'N"Xb  
* @author treeroot N3a ]!4Y\  
* @since 2006-2-2 ~*+evAP  
* @version 1.0 cS2]?zI  
*/ Ly R<cd$W  
public class ImprovedMergeSort implements SortUtil.Sort { A:(qF.Tm  
57]La^#  
private static final int THRESHOLD = 10; X?JtEQ~>  
& .#dZ}J  
/* h?} S|>9  
* (non-Javadoc) T &bB8tQk  
* hd[t&?{=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }odjaM}5Nc  
*/ k,8^RI07@  
public void sort(int[] data) { t]iKU@3  
int[] temp=new int[data.length]; }<w9Jfr"X  
mergeSort(data,temp,0,data.length-1); %qqeL   
} tB4yj_ZF  
eb6y-TwY  
private void mergeSort(int[] data, int[] temp, int l, int r) { {ot6ssT=D  
int i, j, k; ~?)y'?  
int mid = (l + r) / 2; AMO{ee7Po  
if (l == r) v6E5#pse8  
return; g:U -kK!i  
if ((mid - l) >= THRESHOLD) yS[HYq  
mergeSort(data, temp, l, mid); Ij XxH]2  
else qSD3]Dv"  
insertSort(data, l, mid - l + 1); B<$6Dj%L  
if ((r - mid) > THRESHOLD) -%K}~4J  
mergeSort(data, temp, mid + 1, r); &%k_BdlkQ  
else St> E\tXp  
insertSort(data, mid + 1, r - mid); Goy[P2m  
+^J;ic  
for (i = l; i <= mid; i++) { '"ze Im~  
temp = data; 5B8fz;l= B  
} jqTK7b  
for (j = 1; j <= r - mid; j++) { P3Ah1X7W"C  
temp[r - j + 1] = data[j + mid]; v |pHbX  
} aSJD'u4w.a  
int a = temp[l]; kho0@o+'^  
int b = temp[r]; "gDk?w  
for (i = l, j = r, k = l; k <= r; k++) { JE*?O*&|Q  
if (a < b) { jHA(mU)b  
data[k] = temp[i++]; HqV4!o9'  
a = temp; olXfR-2>1  
} else { |  >yc|W  
data[k] = temp[j--]; 9}42s+  
b = temp[j]; J~ +p7S  
} qzLD  
} qLKL*m  
} zzh7 "M3Qn  
]gF=I5jn]  
/** D5].^*AbZ  
* @param data ~XvMiWuo  
* @param l "-AFWWKtx  
* @param i 1|>bG#|  
*/ Y`6<:8[?  
private void insertSort(int[] data, int start, int len) { Gc5mR9pV   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g?Rq .py]!  
} MU:v& sk  
} h gwS_L  
} HW'I$ .  
} ' dv(  
s.KfMJ"u[  
堆排序: vkM_a}%<  
Rt5Xqz\6i  
package org.rut.util.algorithm.support; >%n6n! "  
n* .<L  
import org.rut.util.algorithm.SortUtil; /5 OQ0{8p  
YdB/s1|G  
/** YG*}F|1  
* @author treeroot |S]fs9  
* @since 2006-2-2 73{<;z}i  
* @version 1.0 b.}J'?yLm  
*/ Eq=JmO'gHs  
public class HeapSort implements SortUtil.Sort{ Bi"cWO  
e ^`La*n  
/* (non-Javadoc) 8vfC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &Wk:>9]Jrb  
*/ kKDf%=  
public void sort(int[] data) { o4LVG  
MaxHeap h=new MaxHeap(); C8 }=fa3u  
h.init(data); vNZ"x)?  
for(int i=0;i h.remove(); ]~ S zb  
System.arraycopy(h.queue,1,data,0,data.length); nf:wJ-;*  
} 2uF'\y  
{W%XS E  
private static class MaxHeap{ oL!C(\ERh  
4Yt'I#*  
void init(int[] data){ R+/kx#^  
this.queue=new int[data.length+1]; W*n|T{n  
for(int i=0;i queue[++size]=data; 5a2;@ }%V  
fixUp(size); .R@XstQ  
} }wJH@'0+  
} 0wF)bQv1  
GW7+#  
private int size=0; X]\; f  
E% Ko[G  
private int[] queue; r CUs  
}We-sZ/w7r  
public int get() { 3-[+g}kak?  
return queue[1]; 1&Mpx!K*T  
} )2u_c=  
UjyrmQf  
public void remove() { 9PaV*S(\TR  
SortUtil.swap(queue,1,size--); , 0?_? GO  
fixDown(1); ^$rqyWZYp  
} V~Jt  
file://fixdown Tq6\oIBkV  
private void fixDown(int k) { e#WASHZN  
int j; OL@$RTh  
while ((j = k << 1) <= size) { {"rL3Lk  
if (j < size %26amp;%26amp; queue[j] j++; @f,/K1k  
if (queue[k]>queue[j]) file://不用交换 )U8=-_m  
break; ZK<c(,oZ^  
SortUtil.swap(queue,j,k); 5 (q4o`  
k = j; "=$uv  
} zW[HGI6w  
} azRp4~2?  
private void fixUp(int k) { S]4!uv^y  
while (k > 1) { N,F[x0&?  
int j = k >> 1; 5UG"i_TC  
if (queue[j]>queue[k]) (tiE%nF+  
break; lcfs 1].  
SortUtil.swap(queue,j,k); uE.. 1N&*  
k = j; NZ+TTMv  
} "od 2i\  
} =t|,6Vp  
bY~V?yNgKM  
} I y5)SZ'  
\"Qa)1 |  
} uOh  
~{{7y]3M-  
SortUtil: `84,R!  
V%`\x\Xat  
package org.rut.util.algorithm; h66mzV:`  
_d>{Hz2  
import org.rut.util.algorithm.support.BubbleSort; n9Vr*RKM)  
import org.rut.util.algorithm.support.HeapSort; {c<cSrfI  
import org.rut.util.algorithm.support.ImprovedMergeSort; @jZ1WHS_a  
import org.rut.util.algorithm.support.ImprovedQuickSort; bJw{U.  
import org.rut.util.algorithm.support.InsertSort; w 5t|C>  
import org.rut.util.algorithm.support.MergeSort; .B!  Z0  
import org.rut.util.algorithm.support.QuickSort; {CX06BP  
import org.rut.util.algorithm.support.SelectionSort; e=_Ng j)  
import org.rut.util.algorithm.support.ShellSort; pTH5-l_f ]  
:g+ wv}z  
/** MaF4lFmS  
* @author treeroot CWb*bw0  
* @since 2006-2-2 /HdjPxH  
* @version 1.0 fW=eB'Sl  
*/ 7IrH(~Fo  
public class SortUtil { 3A.lS+P1  
public final static int INSERT = 1; :+8qtIytKX  
public final static int BUBBLE = 2; {?r5~ T`2  
public final static int SELECTION = 3; `1lGAKv  
public final static int SHELL = 4; uu/2C \n}  
public final static int QUICK = 5; Ve xxdg  
public final static int IMPROVED_QUICK = 6; yMpZ-b$*~  
public final static int MERGE = 7; \86NV="U  
public final static int IMPROVED_MERGE = 8; ghTue*A  
public final static int HEAP = 9; O]oH}#5b  
N]F}Z#h  
public static void sort(int[] data) { EQ>@K-R  
sort(data, IMPROVED_QUICK); +.-mqtM  
} ]UGk"s5A  
private static String[] name={ h1$75E?,  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h" f_T [  
}; 7s Gf_`Z  
l4U  
private static Sort[] impl=new Sort[]{ c/l^;6O/!\  
new InsertSort(), \4O_@d`A  
new BubbleSort(), C>QWV[F  
new SelectionSort(), Tz&h[+6`  
new ShellSort(), v]}\Ns/  
new QuickSort(), YhP+{Y8t  
new ImprovedQuickSort(),  _ Ewkb  
new MergeSort(), &7r a  
new ImprovedMergeSort(), TK0W=&6#A  
new HeapSort() OMBH[_  
}; x }]"jj2x  
D J7U6{KLq  
public static String toString(int algorithm){ s? 2ikJq  
return name[algorithm-1];  hV fANbs  
} @E>I<j,D  
gSe3S-Lt  
public static void sort(int[] data, int algorithm) { v^Rw9*w{  
impl[algorithm-1].sort(data); Ml'lZ)  
} /Zxq-9   
k:N/-P&+  
public static interface Sort { dfh 1^Go  
public void sort(int[] data); yI / FD  
} Zh`[A9I/  
b,>>E^wd!  
public static void swap(int[] data, int i, int j) { 3u< ntx ><  
int temp = data; 2q*wYuc  
data = data[j]; bHQ) :W  
data[j] = temp; Ko|gH]B'  
} pm[+xM9PB  
} @gw8r[  
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