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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。 `:5,e/5,  
插入排序: Zi1YZxF`Y  
AbY;H  
package org.rut.util.algorithm.support; a4by^   
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import org.rut.util.algorithm.SortUtil; Sx&mv.?X  
/** :ICr\FY$  
* @author treeroot }x0Z( `  
* @since 2006-2-2 sU%" azc  
* @version 1.0 RV92qn B  
*/ wE2x:Ge:  
public class InsertSort implements SortUtil.Sort{ 78w4IICk  
-\,VGudM}  
/* (non-Javadoc) ^[TOZXL`:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *k6$   
*/ P^4'|#~2T  
public void sort(int[] data) { =|JKu'  
int temp; gA+YtU{z  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J/7 u7_  
} M?hFCt3Y  
} Sip_~]hM  
} NDo^B7 R-  
i tW~d  
} HA\A$>  
ca}S{"  
冒泡排序: C->[$HcRa  
uXNp!t Y  
package org.rut.util.algorithm.support; 4K #^dJnC  
6`j<l5-h  
import org.rut.util.algorithm.SortUtil; yu_gNro L  
+/_!P;I  
/** 9OZ>y0)K~  
* @author treeroot )$F6  
* @since 2006-2-2 Dauo(Uhuo  
* @version 1.0 Is kSX  
*/ \S5V}!_  
public class BubbleSort implements SortUtil.Sort{ buc*rtHfA  
d<?X3&J  
/* (non-Javadoc) ~ i'C/[P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .-%oDuB5zF  
*/ 44|03Ty  
public void sort(int[] data) { 6\mC$:F  
int temp; ASM1Y]'Z  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .lG +a!)  
if(data[j] SortUtil.swap(data,j,j-1); _!;\R7]  
} hhj ,rcsi  
} J{x##p<F$  
} v/(__xN`B  
} TP^\e_k  
W7]mfy^  
} i59k"pNm  
'%$-]~   
选择排序: 1W7 iip,  
6(sfpK'  
package org.rut.util.algorithm.support; ?e2Y`0  
7t+]z)  
import org.rut.util.algorithm.SortUtil; t5A[o7BS  
/gF]s_  
/** C7T;;1P?  
* @author treeroot $1=v.'Y  
* @since 2006-2-2 yOM -;h  
* @version 1.0 h!~|6nj  
*/ "pl[(rc+u  
public class SelectionSort implements SortUtil.Sort { %rX\ P  
=mAGD*NKu  
/* ]X4RnV55Q  
* (non-Javadoc) &U8 54  
* ur`}v|ZY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @US '{hO1p  
*/ ZS|Z98  
public void sort(int[] data) { f`bIQ9R  
int temp; H|x k${R`  
for (int i = 0; i < data.length; i++) { Je@p5(f  
int lowIndex = i; s}<)B RZi  
for (int j = data.length - 1; j > i; j--) { J$<:/^t  
if (data[j] < data[lowIndex]) { ,at-ci\'  
lowIndex = j; <"{+  
} =7H.F:BBG  
} 64;oB_  
SortUtil.swap(data,i,lowIndex);  S/)  
} Ho:}Bn g  
} [v~Uy$d\  
dcM+ylB  
} Z,(%v.d  
0FN~$+t)H  
Shell排序: ]Oig ..LJ  
d+1L5}Jn  
package org.rut.util.algorithm.support; +}`p"<'u  
?Of{c,2 .  
import org.rut.util.algorithm.SortUtil; W[@"H1bVH  
av7q>NEZ!1  
/** Vl&+/-V  
* @author treeroot 5J?bE?X  
* @since 2006-2-2 GR_p1 C\  
* @version 1.0 e=YO.HT  
*/ gE-lM/w  
public class ShellSort implements SortUtil.Sort{ F9ZOSL 8Q  
P] {B^,E  
/* (non-Javadoc) z[_R"+   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y+}OClS  
*/ !#l0@3  
public void sort(int[] data) { ;e`D#khB  
for(int i=data.length/2;i>2;i/=2){ VuP#b'g=|]  
for(int j=0;j insertSort(data,j,i); HFpjNR  
} k QB 1=c  
} U+I3P  
insertSort(data,0,1); FA<Z37:  
} Z 5{*? 2  
|F8;+nAVF#  
/** 1"*Nb5s  
* @param data U1OLI]P  
* @param j {[H4G,QK  
* @param i ~x76{.gT  
*/ #J'Z5)i|  
private void insertSort(int[] data, int start, int inc) { hCSR sk3  
int temp; W ??;4  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QYFN:XZ  
} *8pe<:A#p  
} rHA/  
} v3iDh8.__  
KE }o  
} ]QjXh >  
"E4i >g  
快速排序: 7"h=MB_  
;D %5 nnr  
package org.rut.util.algorithm.support; oxxE'cx{g  
:*^(OnIe  
import org.rut.util.algorithm.SortUtil; l{B< "+8  
)dUd`g  
/** 2_B;  
* @author treeroot PprQq_j  
* @since 2006-2-2 vr8J*36{  
* @version 1.0 ,3g]= f  
*/ h$:&1jVY{  
public class QuickSort implements SortUtil.Sort{ }0(vR_x  
FE^?U%:u@  
/* (non-Javadoc) D0,oml  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [rD+8,zVm  
*/ kM6 EZ`mj  
public void sort(int[] data) { @k#z &@b  
quickSort(data,0,data.length-1); H >@JfYZ0  
} l7=$4As/hI  
private void quickSort(int[] data,int i,int j){ oj,Vi-TZ  
int pivotIndex=(i+j)/2; -wG[>Y  
file://swap ^mQ;CMV  
SortUtil.swap(data,pivotIndex,j); 4#'^\5  
r!-L`GUm  
int k=partition(data,i-1,j,data[j]); Ugee?;]lu  
SortUtil.swap(data,k,j); 7.F& {:@_  
if((k-i)>1) quickSort(data,i,k-1); W! 5Blo  
if((j-k)>1) quickSort(data,k+1,j); $u0+29T2O  
1.u gXD  
} r5X BcG(2  
/** c@"i?  
* @param data 7csl1|U  
* @param i SWe!9Y$  
* @param j 7,&3=R <  
* @return ^OGH5@"  
*/ ocDVCCkxg  
private int partition(int[] data, int l, int r,int pivot) { ).O\O)K  
do{ #Fb0;H9`  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); eO"\UDBV  
SortUtil.swap(data,l,r); Bm2}\KOI  
} "' i [~  
while(l SortUtil.swap(data,l,r); UJyiRP:#]>  
return l; b(.o|d/P  
} yx`r;|ds}  
]#WX|0''^  
} Hme@9(zD.  
SFm.<^6  
改进后的快速排序: hVQ+ J!qD  
ttJ:[ R'  
package org.rut.util.algorithm.support; -* -zU#2|  
ix_$Ok  
import org.rut.util.algorithm.SortUtil; LRLhS<9  
uDMUy"8&!  
/** B'[3kJ'  
* @author treeroot &_Xv:?  
* @since 2006-2-2 "KQ\F0/  
* @version 1.0 3GuMiht5  
*/ ~[bMfkc3  
public class ImprovedQuickSort implements SortUtil.Sort { G~mB=]  
VS@rM<K{  
private static int MAX_STACK_SIZE=4096; Z<m'he  
private static int THRESHOLD=10; bvxxE/?Ni  
/* (non-Javadoc) _sD]Viqc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3M>FU4Ug2  
*/ pdXgr)Uv  
public void sort(int[] data) { !WVabdt  
int[] stack=new int[MAX_STACK_SIZE]; MHzsxF|  
;7hX0AK  
int top=-1; E&Zx]?~  
int pivot; bI6V &Dd  
int pivotIndex,l,r; \T#(rt\j  
nms<6kfzL  
stack[++top]=0; p~{%f#V  
stack[++top]=data.length-1; 2 3XAkpzp$  
;*$8iwBQ_  
while(top>0){ ef1N#z%gt  
int j=stack[top--]; crOtQ  
int i=stack[top--]; <@;xV_`X+  
:_b =Km<  
pivotIndex=(i+j)/2; 'E6gEJ  
pivot=data[pivotIndex]; Am}PXj6  
H2t pP~!G  
SortUtil.swap(data,pivotIndex,j); oXZ@*   
5)zj){wL  
file://partition H1c|b !C  
l=i-1; H9a3 rA>  
r=j; WFc[F`b  
do{ }5c'ui!3H  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); eVNBhR}HS  
SortUtil.swap(data,l,r); t1_y1!u Q  
} =dw*B  
while(l SortUtil.swap(data,l,r); ;@;ie8H  
SortUtil.swap(data,l,j); B0?@k  
gT\y&   
if((l-i)>THRESHOLD){ _xZb;PbFE  
stack[++top]=i; 0kr& c;~  
stack[++top]=l-1; WaZ@  
} w<^2h}5  
if((j-l)>THRESHOLD){ @'| 6lG  
stack[++top]=l+1; Fn0LE~O}-8  
stack[++top]=j; *ytd.^@r  
} z@S8H6jM)S  
=R8.QBVdN  
} DD{@lM\vc  
file://new InsertSort().sort(data); e+[J[<8  
insertSort(data); A.cZa  
} z_iyuLRdb  
/** :^.87>V7  
* @param data j$i8@]  
*/ wP *a>a  
private void insertSort(int[] data) { FYE9&{]h  
int temp; *V<2\-  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6'lT`E|  
} FO)nW:8]  
} LRlk9:QD>  
} [AOluS  
M#jeeE-}%  
} q8yJW-GA   
kQiW5  
归并排序: ^=M(K''  
dCJR,},\f  
package org.rut.util.algorithm.support; -<^Q2]PE;  
ve/6-J!5Y.  
import org.rut.util.algorithm.SortUtil; $ax%K?MBD  
)k<~}wvQ0  
/** b(rBha|  
* @author treeroot 3<Y;mA=hw  
* @since 2006-2-2 sn-+F%[  
* @version 1.0 E$zq8-p|  
*/ WiCM,wDi  
public class MergeSort implements SortUtil.Sort{ Ku,A}5-6  
U=?"j-wN  
/* (non-Javadoc) $">NW& i(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {qdhp_~^l  
*/ -VT?/=Y s  
public void sort(int[] data) { zpQ/E  
int[] temp=new int[data.length]; +o70: UF%  
mergeSort(data,temp,0,data.length-1); *:\9 T#h  
} ;;J98G|1  
YY>Uf1}*9  
private void mergeSort(int[] data,int[] temp,int l,int r){ #a>!U'1|  
int mid=(l+r)/2; K`83C`w.  
if(l==r) return ; P\4o4MF@K  
mergeSort(data,temp,l,mid); +P;D}1B#I?  
mergeSort(data,temp,mid+1,r); 7^e}|l  
for(int i=l;i<=r;i++){ AS-t][m#  
temp=data; XA^:n+Yo  
} &WV 9%fI  
int i1=l; g<5Pc,  
int i2=mid+1; [ESs?v$  
for(int cur=l;cur<=r;cur++){ ?'_7#0R_0  
if(i1==mid+1) dM$G)9N)K  
data[cur]=temp[i2++]; u5|e9(J  
else if(i2>r) ^i k|l=  
data[cur]=temp[i1++]; 4sgwQ$m)  
else if(temp[i1] data[cur]=temp[i1++]; u:kY4T+Z  
else 6_ 0w>  
data[cur]=temp[i2++]; v-aq".XQ  
} 9&FV =}MO  
} ,TA [el%#  
QX3![;0F  
} a;6\T*iJ!  
I%WK*AORM  
改进后的归并排序: %*; 8m'  
c|a|z}(/J  
package org.rut.util.algorithm.support; `lOoT  
L#N.pd  
import org.rut.util.algorithm.SortUtil; KPcuGJ  
O lIH0  
/** cf3c+.o  
* @author treeroot f__WnW5h  
* @since 2006-2-2 r1?FH2Ns  
* @version 1.0 Qz$Dv@*y\  
*/ dNt|"9~&  
public class ImprovedMergeSort implements SortUtil.Sort { S.4YC>E  
Q]:%Jj2  
private static final int THRESHOLD = 10; &Rt]K  
W,J,h6{F  
/* k.Nu(j"z  
* (non-Javadoc) V1U[p3J-S  
* p&27|1pZm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?b$zuJ]  
*/ BC[d={_-  
public void sort(int[] data) { NUtyUv  
int[] temp=new int[data.length]; ~n 9DG>a  
mergeSort(data,temp,0,data.length-1); \+A<s,x  
} JNl+UH:.  
T#f@8 -XUE  
private void mergeSort(int[] data, int[] temp, int l, int r) { LP_F"?4  
int i, j, k; @ ]3Rw[% z  
int mid = (l + r) / 2; G* 6<pp  
if (l == r) SX,z J`"  
return; LK5H~FK  
if ((mid - l) >= THRESHOLD) a];g  
mergeSort(data, temp, l, mid); QYGxr+D  
else *s4!;2ZhsU  
insertSort(data, l, mid - l + 1); mf'1.{  
if ((r - mid) > THRESHOLD) Jjq%cA  
mergeSort(data, temp, mid + 1, r); I]$d,N!.  
else jYZWf `X~  
insertSort(data, mid + 1, r - mid); v w;  
9Q1GV>j>B  
for (i = l; i <= mid; i++) { YTit=4|  
temp = data; _x{x#d;L3  
} +yI^<BH  
for (j = 1; j <= r - mid; j++) { 8PS:yBkA|  
temp[r - j + 1] = data[j + mid]; k| o,gcU  
} ![tI(TPq  
int a = temp[l]; v[ '5X  
int b = temp[r]; JwczE9~o  
for (i = l, j = r, k = l; k <= r; k++) { ?@(H. D6'v  
if (a < b) { DyZ90]N  
data[k] = temp[i++]; %Q~Lk]B?t  
a = temp; ::`wx@  
} else { 0E[Se|!  
data[k] = temp[j--]; va;wQ~&  
b = temp[j]; qZ }XjL  
} N|LVLsK  
} .>&fwG  
} bm.H0rHR4  
R<Tzt' z  
/** ~MO C r  
* @param data k 'b|#c9c  
* @param l `pUArqf  
* @param i o7seGw<$X  
*/ ,;18:  
private void insertSort(int[] data, int start, int len) { PBv43uIL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); VA.1J BQ  
} $)~]4n=  
} L]}|{< 3\  
} S8,06/#  
} ISmnZ@  
<,C})H?  
堆排序: T5;D0tM/  
2ZeL  
package org.rut.util.algorithm.support; D ]eF3a.G  
iH=@``Z  
import org.rut.util.algorithm.SortUtil; -;*Z!|e9  
uBgHtjmae  
/** ;8Cqy80K  
* @author treeroot w>s  
* @since 2006-2-2 IWgC6)n@n  
* @version 1.0 ^S|^1  
*/ tPHiz%  
public class HeapSort implements SortUtil.Sort{ '*; rm*n  
~s_$a8  
/* (non-Javadoc) Y<XDR:]A,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |9 3%,  
*/ wP9C\W;  
public void sort(int[] data) { '=@x2`U/  
MaxHeap h=new MaxHeap(); NU[{oI<a  
h.init(data); 5KSsRq/8"  
for(int i=0;i h.remove(); IuF-bxA  
System.arraycopy(h.queue,1,data,0,data.length); @Q!j7I  
} :u0433z:  
0a'y\f:6*  
private static class MaxHeap{ MC@cT^Z^  
O 7sn>uO  
void init(int[] data){ < lrw7T  
this.queue=new int[data.length+1]; )J0VB't  
for(int i=0;i queue[++size]=data; ~k 3r$e@  
fixUp(size); ![V- e  
} @:I/lg=Qd  
} M{QNpoM  
.R,8<4  
private int size=0; OA0\b_  
6z*L9Vy($  
private int[] queue; t}nRWo  
;Z*RCuwg  
public int get() { d\f 5\Y  
return queue[1]; {Hv=iVmt  
} !l|Qyk[  
;`+,gVrp  
public void remove() { 'Bx7b(xqk  
SortUtil.swap(queue,1,size--); {TNAK%'v  
fixDown(1); "=;&{N~8U  
} A UK7a  
file://fixdown N_0O"" d  
private void fixDown(int k) { GZw<Y+/V"5  
int j; t-Wn@a  
while ((j = k << 1) <= size) { =DgD&_  
if (j < size %26amp;%26amp; queue[j] j++; ;ORy&H aKl  
if (queue[k]>queue[j]) file://不用交换 ;V GrZZ  
break; oCrn  
SortUtil.swap(queue,j,k); +l9avy+P (  
k = j; "n:9JqPb  
} fomkwN  
} v\c3=DbO  
private void fixUp(int k) { khfE<<$=  
while (k > 1) { or<JjTJ\o_  
int j = k >> 1; i/L1KiCLx  
if (queue[j]>queue[k]) hmo?gD<  
break; L[K_!^MZ  
SortUtil.swap(queue,j,k); ){} #v&  
k = j; n7G$gLX  
} a_yV*N`D  
} i@RjG   
-1R~3j1_  
} \WTg0b[  
SUw{xGp  
} kLhtkuS4  
yBoZ@9Do  
SortUtil: ]V_9[=%  
0)B+ :  
package org.rut.util.algorithm; MouYZI)  
wg_Z!(Hr#  
import org.rut.util.algorithm.support.BubbleSort; l;2bBx7vW  
import org.rut.util.algorithm.support.HeapSort; 'a}{s>{O  
import org.rut.util.algorithm.support.ImprovedMergeSort; aE"t['  
import org.rut.util.algorithm.support.ImprovedQuickSort; e.T5F`Du  
import org.rut.util.algorithm.support.InsertSort; ZDf9Npe  
import org.rut.util.algorithm.support.MergeSort; wmIq{CXx,  
import org.rut.util.algorithm.support.QuickSort; + |,CIl+  
import org.rut.util.algorithm.support.SelectionSort; ,y.0 Cb0  
import org.rut.util.algorithm.support.ShellSort; JnZxP> 2B  
YpL}R#  
/** x R.Ql>  
* @author treeroot Z Uh<2F  
* @since 2006-2-2 {1Qwwhov  
* @version 1.0 S92Dvw?  
*/ }&j&T9oX  
public class SortUtil { TuU.yvkU  
public final static int INSERT = 1; /vhh2`  
public final static int BUBBLE = 2; ax<0grK  
public final static int SELECTION = 3; #k6;~  
public final static int SHELL = 4; X[w9~t$\  
public final static int QUICK = 5; - zkB`~u_  
public final static int IMPROVED_QUICK = 6; QUNsS9  
public final static int MERGE = 7; QNo}nl /N  
public final static int IMPROVED_MERGE = 8; 0kkiS 3T  
public final static int HEAP = 9; pmS=$z;I  
n'gfB]H[  
public static void sort(int[] data) { ?`r/_EKNv  
sort(data, IMPROVED_QUICK); fq(e~Aqw$  
} rLnu\X=h$  
private static String[] name={ /~yqZD<O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &jJgAZ!  
}; q\,H9/.0k  
T:ck/:ZH  
private static Sort[] impl=new Sort[]{ 5HU>o|.  
new InsertSort(), 2{& " 3dq  
new BubbleSort(), ZG>OT@ GA  
new SelectionSort(), 0,c z&8  
new ShellSort(), ji2#O.  
new QuickSort(), oGM.{\i  
new ImprovedQuickSort(), #GF1MFkoS  
new MergeSort(), >M!>Hl/  
new ImprovedMergeSort(), JG_7G=~  
new HeapSort() ()?)Ybqss  
}; pv T!6+  
\|(;q+n?k  
public static String toString(int algorithm){ J+zqu  
return name[algorithm-1]; iqU}t2vFrj  
} IFgF5VG6g  
 v/.2Z(sZ  
public static void sort(int[] data, int algorithm) { +bXZE  
impl[algorithm-1].sort(data); p)oW'#@a  
} OjCT%6hy;  
_Sg29qFK  
public static interface Sort { 'L,rJ =M3  
public void sort(int[] data); yZ 9 *oDs  
} OLi;/(g  
>}9TdP/oT  
public static void swap(int[] data, int i, int j) { uODsXi{z  
int temp = data; \DHCf 4,  
data = data[j]; =nsY[ s<  
data[j] = temp; <7p2OPD  
} \yy!?UlaI  
} 1w5nBVC*$V  
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