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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。 @GtZK  
插入排序: ,GnU]f  
TMCA?r%Y\  
package org.rut.util.algorithm.support; w0Y%}7  
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import org.rut.util.algorithm.SortUtil; 8Q -F  
/** U9 *2< c  
* @author treeroot Oha g%<1#  
* @since 2006-2-2 #Vigu,zY  
* @version 1.0 y}HC\A77uD  
*/ KgWT&^t  
public class InsertSort implements SortUtil.Sort{ p ri{vveN@  
=3C)sz}  
/* (non-Javadoc)  Zwns|23n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oLMi vy4  
*/ CWQ2iu<_0  
public void sort(int[] data) { 5z ^UQ q  
int temp; 9%14k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x 4</\o  
} F5MPy[  
} 34kd|!e,  
} [B @j@&  
l|em E ^  
} /*^|5>-`i1  
p\;)^O4  
冒泡排序: ~J{[]wi  
2] G$6H  
package org.rut.util.algorithm.support; =Zy!',,d,9  
X", 0VO  
import org.rut.util.algorithm.SortUtil; f94jMzH9z  
wP0+Xv,  
/** Q5n : f+  
* @author treeroot a BH1J]_  
* @since 2006-2-2 S{T d/1}  
* @version 1.0 g+)\ /n|  
*/ lkg*AAR?'  
public class BubbleSort implements SortUtil.Sort{ ~"2@A F  
~!9Px j*  
/* (non-Javadoc) yGG B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p3FnYz-V  
*/ (<ZkmIXN  
public void sort(int[] data) { X\2hKUkT  
int temp; ko2j|*D6@~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .r5oN+?e  
if(data[j] SortUtil.swap(data,j,j-1); zf>^2t*\  
} xevP2pYG:  
} 5qkuK F  
} /JubiLEK  
} YQdX>k  
R 0HVLQI  
} %`1CE\f  
M03i4R@h(  
选择排序: )NmlV99q  
poYAiq_3T  
package org.rut.util.algorithm.support; vSC0D7BlG  
L2.`1Aag  
import org.rut.util.algorithm.SortUtil; D#Yx,`Ui  
Ij}F<ZgZG  
/** i6#]$B  
* @author treeroot zZ"U9!T  
* @since 2006-2-2 )]c3bMVE-  
* @version 1.0 n,a5LR  
*/ ]Bd3d%  
public class SelectionSort implements SortUtil.Sort { @@3,+7%1  
w1@b5-  
/* a<wQzgxG  
* (non-Javadoc) L\wpS1L(  
* J7wQ=! g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dnm.!L8  
*/ 9_WPWFO  
public void sort(int[] data) { q6JW@GT  
int temp; tb?F}MEe  
for (int i = 0; i < data.length; i++) { Z<|_+7T  
int lowIndex = i; .A7tq  
for (int j = data.length - 1; j > i; j--) { 6$fnQcpJ  
if (data[j] < data[lowIndex]) { + i@yZfT  
lowIndex = j; =Cy>$/H64  
} b}Hl$V(uD  
} }i7U}T  
SortUtil.swap(data,i,lowIndex); Gk"L%Zt)  
} koEX4q  
} JV]u(PL  
gr`Ar;  
} [}ZPg3Y  
j H.Ju|nO  
Shell排序: hQ}7Z&O  
C nSX  
package org.rut.util.algorithm.support; s'aV qB  
q bZ,K@0  
import org.rut.util.algorithm.SortUtil; >[H&k8\7n  
seuN,jpt  
/** ]a6O(]  
* @author treeroot Ly)(_Tp@+  
* @since 2006-2-2 SQt|(r)  
* @version 1.0 wL-ydMIx  
*/ 7}'A)C>J;  
public class ShellSort implements SortUtil.Sort{ od}EM_  
33<fN:J]f  
/* (non-Javadoc) `!omzE*bk5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {nQ)4.e6  
*/ qH h'l;.  
public void sort(int[] data) { 0i*'N ch#i  
for(int i=data.length/2;i>2;i/=2){ }>;ht5/i/  
for(int j=0;j insertSort(data,j,i); o\]: !#r{T  
} ?VZ11?u  
} 9jMC |oE  
insertSort(data,0,1); ?H[5O+P[  
} 7O+Ij9+{n  
'o/N}E!Pt  
/** d2A wvP  
* @param data S?Bc~y  
* @param j Cv>yAt.3  
* @param i 9'n))%CZ.  
*/ XJmFJafQD  
private void insertSort(int[] data, int start, int inc) { :J Gl>V  
int temp; "B9[cDM&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bvip bf[m<  
} 0Oc}rRH(C  
} coF T2Pq  
} :T7?  
H ~[LJ5x  
} Dh&:-  
5@ bc(H  
快速排序: [;?"R-V"z  
JFG",09]  
package org.rut.util.algorithm.support; f`hyYp`d5  
\-Iny=$  
import org.rut.util.algorithm.SortUtil; 0~+NB-L}  
R%b*EBZ  
/** /`+Hw dk  
* @author treeroot k<YtoV  
* @since 2006-2-2 I(OAEIz  
* @version 1.0 <H5n>3#pH  
*/ aFRTNu/r  
public class QuickSort implements SortUtil.Sort{ !Tn0M;  
l_c^ .D  
/* (non-Javadoc) *?_qE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `E} p77  
*/ *.m{jgi1X  
public void sort(int[] data) { t1e4H=d>  
quickSort(data,0,data.length-1); ,8c dXt   
} 1mJbQ#5  
private void quickSort(int[] data,int i,int j){ _m9~*  
int pivotIndex=(i+j)/2; b:P\=k]8#  
file://swap  2Vp>"  
SortUtil.swap(data,pivotIndex,j); X,RT<GNNb  
m<FF$pTT  
int k=partition(data,i-1,j,data[j]); Dq/3E-y5  
SortUtil.swap(data,k,j); 8W~lU~-  
if((k-i)>1) quickSort(data,i,k-1); 45x,|h[F{5  
if((j-k)>1) quickSort(data,k+1,j); xClRO,-  
 r=fE8[,  
} t a&Q4v&-  
/** N9i}p^F<_  
* @param data 5%<TF .;-J  
* @param i e7@li<3>d  
* @param j Mjb 1  
* @return / <JY:1|  
*/ 5oz>1  
private int partition(int[] data, int l, int r,int pivot) { |}_gA  
do{ }FPM-M3y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); {UB%(E[Mr  
SortUtil.swap(data,l,r); w$gS j/  
} +w "XNl  
while(l SortUtil.swap(data,l,r); {]&R8?%  
return l; 2Sge  
} f5@.^hi[  
p QluGIX0V  
} 7dSh3f!  
(E!%v`_0  
改进后的快速排序: W`#gpi)7N  
RK?jtb=&A  
package org.rut.util.algorithm.support; c}\ ' x5:o  
U? 8i'5)  
import org.rut.util.algorithm.SortUtil; Dba+z-3Nzy  
B-!guf rnY  
/** l <:`~\#  
* @author treeroot Q>kiVvc  
* @since 2006-2-2 saatU;V  
* @version 1.0 aSRjFL^  
*/ gf+o1\5t@  
public class ImprovedQuickSort implements SortUtil.Sort { D899gGe  
KzV.+f  
private static int MAX_STACK_SIZE=4096; FyCBN tCv  
private static int THRESHOLD=10; YVoao#!  
/* (non-Javadoc) [ L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j*XjY[  
*/ s4 (Wp3>3i  
public void sort(int[] data) { $h,d? .u6w  
int[] stack=new int[MAX_STACK_SIZE]; 'r~8  
(FuEd11R  
int top=-1; {`a(Tl8V  
int pivot; +|6`E3j%  
int pivotIndex,l,r; O{~KR/  
Gc wt7~  
stack[++top]=0; FtE90=$  
stack[++top]=data.length-1; ri:,q/-  
'}_=kp'X  
while(top>0){ _0K.Fk*(!  
int j=stack[top--]; f6Ml[!aU  
int i=stack[top--]; X1Qr _o-BR  
ThtMRB)9  
pivotIndex=(i+j)/2; mIvnz{_d  
pivot=data[pivotIndex]; mxgqS=`  
7m\vRMK  
SortUtil.swap(data,pivotIndex,j); -!l^]MU  
JRq3>P  
file://partition >zQNHSi  
l=i-1; C ck#Y  
r=j; Y.7}  
do{ n[|6khOL-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y,'%7u  
SortUtil.swap(data,l,r); "rsSW 3_  
} n!ZMTcK8  
while(l SortUtil.swap(data,l,r); #00D?nC  
SortUtil.swap(data,l,j); ^ESUMXb  
K!p,x;YX  
if((l-i)>THRESHOLD){ R }1W  
stack[++top]=i; 0*/kGvw`i  
stack[++top]=l-1; +,z) #  
} Y17hOKc`  
if((j-l)>THRESHOLD){ 8&%Cy'TIz4  
stack[++top]=l+1; 7#ofNH J  
stack[++top]=j; ZNi +Aw$u  
} +>!V ]S  
S nW7x  
} :<H8'4>  
file://new InsertSort().sort(data); ;`+`#h3-V  
insertSort(data); m^Glc?g<  
} Ls1B \Aw_  
/** q(gjT^aN  
* @param data j1A|D   
*/ pl|h>4af  
private void insertSort(int[] data) { 9p4y>3  
int temp; X &D{5~qC  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \9w~pO  
} GV5qdD(  
} a$}NW.  
} +p z}4M`  
*jE;9^  
} h48YDWwy  
h,t:]  
归并排序: P3!Atnv2  
q6R Eh;$  
package org.rut.util.algorithm.support; Cc Y7$D  
NO2(vE  
import org.rut.util.algorithm.SortUtil; 6T_K9  
6Cv.5V hx  
/** P 6.!3%y  
* @author treeroot TcJ$[  
* @since 2006-2-2 tb,9a!?  
* @version 1.0 P\AqpQv  
*/ B$?^wo  
public class MergeSort implements SortUtil.Sort{ >'b=YlUL  
_w>uI57U  
/* (non-Javadoc) V&%C\ns4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s7l23*Czl  
*/ +Ofa#^5);K  
public void sort(int[] data) { VO_dA4C}z  
int[] temp=new int[data.length]; FqZgdmwR  
mergeSort(data,temp,0,data.length-1); gfN2/TDC]P  
} epkD*7  
w#9_eq|3  
private void mergeSort(int[] data,int[] temp,int l,int r){ n'M>xq_  
int mid=(l+r)/2; w"~<h;  
if(l==r) return ; 8Q=ZH=SQK  
mergeSort(data,temp,l,mid); : y1Bt+Fp  
mergeSort(data,temp,mid+1,r); RYy,wVh}  
for(int i=l;i<=r;i++){ pawl|Z'Ez  
temp=data; Q+'nw9:;T  
} UV@0gdy[  
int i1=l; #K4*6LI  
int i2=mid+1; [Gtb+'8  
for(int cur=l;cur<=r;cur++){ o_$&XNC_  
if(i1==mid+1) ($8t%jVWJJ  
data[cur]=temp[i2++]; {[W(a<%bXm  
else if(i2>r) \f%.n]>  
data[cur]=temp[i1++]; 8EI:(NE*J  
else if(temp[i1] data[cur]=temp[i1++]; >g}G}=R~3  
else 6pp$-uS  
data[cur]=temp[i2++]; Qnt5HSSt  
} pRrHuLj^  
} Z9[+'ZWt  
]C!?HQ{bsf  
} z:}nBCmLV  
z_&P?+"Df  
改进后的归并排序: '!Wvqs  
pO]8 dE0  
package org.rut.util.algorithm.support; j_GBH8 `  
o\!qcoE2W  
import org.rut.util.algorithm.SortUtil; #]Y*0Wzpfn  
T$P-<s  
/** /pykW_`/-  
* @author treeroot y vI<4F  
* @since 2006-2-2 "@yyXS r  
* @version 1.0 "HK/u(z)  
*/ J'Sm0  
public class ImprovedMergeSort implements SortUtil.Sort { D(\$i.,b2  
Bm/YgQi  
private static final int THRESHOLD = 10; _ck[&Q  
xaW{I7FfG  
/* JN(-.8<  
* (non-Javadoc)  uMd. j$$  
* BJy;-(JP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pj8azFZ  
*/ g7n "  
public void sort(int[] data) { VaR/o#  
int[] temp=new int[data.length]; E!mmLVa9  
mergeSort(data,temp,0,data.length-1); qZ+H5AG2  
} v&;:^jJ8  
Z a(|(M H  
private void mergeSort(int[] data, int[] temp, int l, int r) { /tj$luls5  
int i, j, k; z9 ($.  
int mid = (l + r) / 2; _A'{la~k  
if (l == r) {/ 2E*|W~I  
return; tC)6  
if ((mid - l) >= THRESHOLD) L0"~[zB]N  
mergeSort(data, temp, l, mid); (CE7j<j  
else MKg,!TELe  
insertSort(data, l, mid - l + 1); 2*1ft>Uty  
if ((r - mid) > THRESHOLD) 7x k|+!  
mergeSort(data, temp, mid + 1, r); /+[63=fl  
else 1@qgF  
insertSort(data, mid + 1, r - mid); +B"0{>n}F  
;rR/5d1!  
for (i = l; i <= mid; i++) { %!|O.xxRR  
temp = data; E^CiOTN  
} z]@6fM[  
for (j = 1; j <= r - mid; j++) { c$h9/H=~  
temp[r - j + 1] = data[j + mid]; s\3q!A?S3  
} &JhX +'U  
int a = temp[l]; -t-tn22  
int b = temp[r]; [*4fwk^  
for (i = l, j = r, k = l; k <= r; k++) { =.Tv)/ea  
if (a < b) { fZ{[]dn[  
data[k] = temp[i++]; |FNCXlgZ  
a = temp; `JURQ:l)3^  
} else { Nneo{j  
data[k] = temp[j--]; r{K;|'d%h  
b = temp[j]; (f#b7O-Wn  
} =RsXI&&vh  
} L%h/OD  
} >I'% !E;  
i.y)mcB4  
/** l=={pb  
* @param data >)**khuP7  
* @param l EL D!{bMT  
* @param i JAjku6  
*/ \ |!\V  
private void insertSort(int[] data, int start, int len) { E>uVofhml  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'Jj=RAV`  
} Q[u6|jRt  
} >n*\bXf  
} F- rQ3  
} Ak BMwV  
P'$ `'J]j  
堆排序: @g-Tk  
MMQ;mw=^]  
package org.rut.util.algorithm.support; v~)LO2y   
n/Dp"4H%q  
import org.rut.util.algorithm.SortUtil; %,q. ),F  
anN#5jt  
/** '%;\YD9  
* @author treeroot #x@eDnb_  
* @since 2006-2-2 =Lp7{09u  
* @version 1.0 27Emm c  
*/ ccJM>9  
public class HeapSort implements SortUtil.Sort{ [\e@_vY@OH  
&^.57]  
/* (non-Javadoc) z\!K<d"Xv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X[3}?,aqL  
*/ 8Ogv9  
public void sort(int[] data) { pdVQ*=c?M  
MaxHeap h=new MaxHeap(); 3Ofc\  
h.init(data); qUJ aeQ  
for(int i=0;i h.remove(); p( LZ)7/  
System.arraycopy(h.queue,1,data,0,data.length); aX6}6zubr  
} KY9n2u&4  
G4-z3e,crr  
private static class MaxHeap{ ,xi({{L*  
AC- )BM';  
void init(int[] data){ \XzM^K3  
this.queue=new int[data.length+1]; _^ |2}t  
for(int i=0;i queue[++size]=data; [k%4eO2p"  
fixUp(size); 4=<*Vd`p  
} [ .,>wo~  
} LlYTv% I  
W;_E4  
private int size=0; kUl  
6g:|*w  
private int[] queue; WcUJhi^\C  
!36]ud&  
public int get() { !cX[-}Q  
return queue[1]; YTaLjITG  
} R^&q-M=O[  
8Cx^0  
public void remove() { KOSM]c\H  
SortUtil.swap(queue,1,size--); YK#fa2ng  
fixDown(1); Dl\`  
} b1?xeG#  
file://fixdown |V,<+BEi  
private void fixDown(int k) { *f+: <=i  
int j; /bRg?Q  
while ((j = k << 1) <= size) { Xl-e !  
if (j < size %26amp;%26amp; queue[j] j++; :l\V'=%9'@  
if (queue[k]>queue[j]) file://不用交换 J$ut_N):N  
break; *ZCn8m:-+  
SortUtil.swap(queue,j,k); _2ef LjXQ  
k = j; $.E6S<(h  
} @mQ:7-,~  
} P ,mN >  
private void fixUp(int k) { Gu0 ,)jy\  
while (k > 1) { # TkR  
int j = k >> 1; 3R$Z[D-  
if (queue[j]>queue[k]) 'Prxocxq  
break; Ri*3ySyb  
SortUtil.swap(queue,j,k); 2[yBD-":  
k = j; 5]Ajf;W\  
} }FqA ppr  
} r?$ ?;%|C  
w}cY6O,1  
} dl]#  
W7No ls{  
} ki]ti={12  
k ]a*&me  
SortUtil: 9)dfL?x8V{  
$% k1fa C  
package org.rut.util.algorithm; $4=f+ "z  
RVw9Y*]b  
import org.rut.util.algorithm.support.BubbleSort; clO,}Ph>  
import org.rut.util.algorithm.support.HeapSort;  k+ o|0  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7A$B{  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2][DZl  
import org.rut.util.algorithm.support.InsertSort; &"Ux6mF-"  
import org.rut.util.algorithm.support.MergeSort; :;]Oc  
import org.rut.util.algorithm.support.QuickSort; P\2M[Gu(Q  
import org.rut.util.algorithm.support.SelectionSort; #;KsJb)N.  
import org.rut.util.algorithm.support.ShellSort; $14:(<  
vG41Ck1  
/** u,. 3  
* @author treeroot _"a=8a06G  
* @since 2006-2-2 pJIv+  
* @version 1.0 3(E $I5  
*/ "f.Z}AbP  
public class SortUtil { ]3{0J  
public final static int INSERT = 1; :3h{ A`u  
public final static int BUBBLE = 2; uRV<?y%  
public final static int SELECTION = 3; Av J4\  
public final static int SHELL = 4; S56]?M|[  
public final static int QUICK = 5; "\%On >  
public final static int IMPROVED_QUICK = 6; %r{3wH# D@  
public final static int MERGE = 7; 7*o*6,/  
public final static int IMPROVED_MERGE = 8; jdA ]2]  
public final static int HEAP = 9; v-j3bB  
OW;tT=ql  
public static void sort(int[] data) { $^/0<i$   
sort(data, IMPROVED_QUICK); z9/G4^qF  
} BHDML.r }M  
private static String[] name={ 9=l.T/?sf  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" JAc_kl{4O  
}; C)-^<  
?i\;:<e4  
private static Sort[] impl=new Sort[]{ U\@A _ B  
new InsertSort(), ,~PYt*X4  
new BubbleSort(), 4<,|*hAT  
new SelectionSort(), $m$;v<PSe  
new ShellSort(), vsB*rP=  
new QuickSort(), ;i uQ?MR3  
new ImprovedQuickSort(), . RVVWqW  
new MergeSort(), Njc%_&r  
new ImprovedMergeSort(), dhPKHrS  
new HeapSort() XUMX*  
}; w&h 2y4  
ed 59B)?l  
public static String toString(int algorithm){ Q[n\R@  
return name[algorithm-1]; 3Mjj' 5KH!  
} ~`8hwR1&z  
yc;3Id5?>  
public static void sort(int[] data, int algorithm) { xg`h40c  
impl[algorithm-1].sort(data); '=E9En#@  
} imB#Eo4eY  
Nil}js27  
public static interface Sort { d;[u8t  
public void sort(int[] data); gwkb!#A  
} |H}sYp  
66&EBX}  
public static void swap(int[] data, int i, int j) { >zvY\{WY  
int temp = data; IV16d  
data = data[j]; RSfM]w}Hq#  
data[j] = temp; +ZsX*/TOn  
} Ue:z1p;g  
} D |bBu  
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