社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 8042阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 [nflQW6  
插入排序: b]*9![_  
"3}Bv X  
package org.rut.util.algorithm.support; bCE[oi6hb  
!&19%C4  
import org.rut.util.algorithm.SortUtil; `Jz"rh-M  
/** 9~>;sjJk  
* @author treeroot S W  
* @since 2006-2-2 4$vya+mAk5  
* @version 1.0 }vc C4 =t/  
*/ KZ<zsHX8H  
public class InsertSort implements SortUtil.Sort{ @gs Kb* ,  
sFB; /*C  
/* (non-Javadoc) zf2]|]*xz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \.Q"fd?a_D  
*/ a"hlPJlG  
public void sort(int[] data) { WO_cT26Y  
int temp; RQ|!?\a=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [h,T.zpa  
} z!t &zkAK  
} ##yi^;3Y  
} t5e%"}>7H  
|4 wVWJ7   
} e9N 1xB  
O7q-MeMM  
冒泡排序: tS`fG;  
xB 4A"|  
package org.rut.util.algorithm.support; &.Yh_  
U7 Z_  
import org.rut.util.algorithm.SortUtil; +mV4Ty  
qb "H&)aHw  
/** R+, tn,<<  
* @author treeroot "K~+T\^|k  
* @since 2006-2-2 iVnrv`k,  
* @version 1.0  ZY keW  
*/ ,uuQj]Dac+  
public class BubbleSort implements SortUtil.Sort{ 0UlaB sv  
4JP01lq'\  
/* (non-Javadoc) D<Ads  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^9"|tWf6O  
*/ o-7>^wV%BD  
public void sort(int[] data) { Z.VVY\  
int temp; %n!s{5:F  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8M:;9a8fh  
if(data[j] SortUtil.swap(data,j,j-1); R-hqaEB  
} !]5F2~"v  
} g4%x7#vz0  
} &87D.Yy^  
} 1<fEz  
'{U56^b]  
} YceiP,!4?v  
ZK_IK)g  
选择排序: "hpK8vQ  
m5f/vb4l  
package org.rut.util.algorithm.support; A-.jv  
[4( TG<I  
import org.rut.util.algorithm.SortUtil; v@"xEf1n[  
 3]<$;[Q  
/** 0(-'L\<>x  
* @author treeroot >iWl-hI-  
* @since 2006-2-2 Wc03Sv&FZ  
* @version 1.0 jlzqa7  
*/ Q)HVh[4  
public class SelectionSort implements SortUtil.Sort { > NK?!!A_  
g"xLS}Al  
/* 4d9i AN  
* (non-Javadoc) -\AB!#fh  
* S1%{/w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (a]'}c$X9`  
*/ [*8w v^  
public void sort(int[] data) { luLm:NWUM  
int temp; \w O)w@"  
for (int i = 0; i < data.length; i++) { pk(<],0]X  
int lowIndex = i; g :e|  
for (int j = data.length - 1; j > i; j--) { 42t D$S5^  
if (data[j] < data[lowIndex]) { #.a4}ya19  
lowIndex = j; =4+UX*&i?.  
} Z4bN|\I  
} f{WJM>$:  
SortUtil.swap(data,i,lowIndex); \L6U}ZQ2V  
} uZ%b6+(  
} 6"eGd"  
Xp._B4g  
} $fuFx8`2W  
uoaF(F-  
Shell排序: %|oY8;0|A>  
)^g}'V=vIr  
package org.rut.util.algorithm.support; K'N\"Y?>  
y.w/7iw:  
import org.rut.util.algorithm.SortUtil; M)Tv(7  
a5z.c_7r  
/** +;U}SR<  
* @author treeroot rm(<?w%'?  
* @since 2006-2-2 E^#|1Kpq  
* @version 1.0 U: gE:tf  
*/ hG&RGN_<6+  
public class ShellSort implements SortUtil.Sort{ 2%1 g%  
{HvR24#  
/* (non-Javadoc) Af ^6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bo\|mvB~  
*/ W&BwBp]K  
public void sort(int[] data) { %w6> 3#e  
for(int i=data.length/2;i>2;i/=2){  CG$S?  
for(int j=0;j insertSort(data,j,i); M1Od%nz3  
} RE!MX>sOEq  
} H*EQ%BLW^,  
insertSort(data,0,1); DT n=WGm)  
} %!p14c*J H  
vy@;zrs  
/** noh3mi  
* @param data tNmH*"wR<  
* @param j B;hc|v{(  
* @param i 0%`\ 8  
*/ f9&D0x?  
private void insertSort(int[] data, int start, int inc) { Mwp#.du(  
int temp; xgsD<3  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bq<QUw=]q&  
} "p2 $R*ie  
} v#YO3nD  
} 1}KNzMHk9  
H&3VPag  
} _Vj O [hx  
:[|`&_D9J  
快速排序: ^?&Jq_oU  
:]=Y1*L\)  
package org.rut.util.algorithm.support; )|uPCZdLZ  
qJ#?=ITE  
import org.rut.util.algorithm.SortUtil; c<DsCzX  
|3Oe2qb  
/** QVn!60[lj  
* @author treeroot ~=Er= 0  
* @since 2006-2-2 eV1O#FLbi  
* @version 1.0 H:d{Sru  
*/ ` n@[=l~  
public class QuickSort implements SortUtil.Sort{ ' OdZ[AN  
mL18FR N  
/* (non-Javadoc) $ 7O[|:Yv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A$Es(<'9g  
*/ V4/P  
public void sort(int[] data) { v?fB:[dG  
quickSort(data,0,data.length-1); Y@M=6G  
} REQ2pfk0  
private void quickSort(int[] data,int i,int j){ Ml+.\'r  
int pivotIndex=(i+j)/2; .y+>-[j?B  
file://swap [$8*(d"F'  
SortUtil.swap(data,pivotIndex,j); Q:>;d-D|1  
zP rT0  
int k=partition(data,i-1,j,data[j]); JWlH(-U4|  
SortUtil.swap(data,k,j); Ud`V"X  
if((k-i)>1) quickSort(data,i,k-1); :4]&R9J>o  
if((j-k)>1) quickSort(data,k+1,j); g^}X3NUn  
*z` {$hc  
} .Z'CqBr[:  
/** <u u1e@P  
* @param data -NiFO  
* @param i A{y3yH`#h  
* @param j 3vQ?vS|2  
* @return hY-;Wfg  
*/ UyD=x(li  
private int partition(int[] data, int l, int r,int pivot) { H,:Cg:E/^  
do{ b;9v.MZ4>g  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7{v0K"E{  
SortUtil.swap(data,l,r); 08yTTt76t  
} j)'V_@  
while(l SortUtil.swap(data,l,r); IC92lPM }  
return l; _Dwn@{[(8  
} _+z@Qn?#6h  
$J=9$.4"  
} = fuF]yL%  
7s<v06Wo  
改进后的快速排序: f!xIMIl)+  
1PjSa4  
package org.rut.util.algorithm.support; zu*0uL  
AG/nX?u7)t  
import org.rut.util.algorithm.SortUtil; w+2:eFi=/  
7.8ukAud  
/** b0riiF  
* @author treeroot Xb)XV$0  
* @since 2006-2-2 $M$oNOT}Y  
* @version 1.0 T 7Lk4cU  
*/ 9n |H%AC  
public class ImprovedQuickSort implements SortUtil.Sort { xqmJPbA  
%}+j4n  
private static int MAX_STACK_SIZE=4096; y 9/27yWB  
private static int THRESHOLD=10; $hg W>e  
/* (non-Javadoc) "aB]?4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yr[iAi"  
*/ kx]f`b  
public void sort(int[] data) { a!Z,~ V8  
int[] stack=new int[MAX_STACK_SIZE]; |1-0x%@[;  
?n?Ep[D  
int top=-1; l OI(+74  
int pivot; 8 x|NR?  
int pivotIndex,l,r; Vnv<]D zC  
p9oru0q  
stack[++top]=0; e9k}n\t3  
stack[++top]=data.length-1; 2ZNTg@o  
0 (@8   
while(top>0){ g#9KG  
int j=stack[top--]; /<zBcpVNV  
int i=stack[top--]; ]1abz:  
31Zl"-<#-  
pivotIndex=(i+j)/2; +%UXI$v  
pivot=data[pivotIndex]; -t:y y:4  
JAmv7GL'6  
SortUtil.swap(data,pivotIndex,j); 76zi)f1f  
&q``CCOF&  
file://partition %mtW-drv>  
l=i-1; )nQpO"+M  
r=j; @6h=O`X>  
do{ "%qGcC8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A}H)ojG'v  
SortUtil.swap(data,l,r); N$:[`,  
} r}D`15IHJ  
while(l SortUtil.swap(data,l,r); 1i2jYDB"  
SortUtil.swap(data,l,j); jW?.>(  
t#6gjfIi  
if((l-i)>THRESHOLD){ N''9Bt+:  
stack[++top]=i; -;Cl0O%  
stack[++top]=l-1; e|"`W`"-  
} Y]B2-wt-  
if((j-l)>THRESHOLD){ l: 1Zq_?v;  
stack[++top]=l+1; ,)S|%tDW  
stack[++top]=j; \W??`?Idh  
} Hd2Sou4-j  
~iEH?J%i1r  
} $ LFzpg  
file://new InsertSort().sort(data); @"'1"$  
insertSort(data); y?CEV-3+  
} 19 bP0y  
/** ,t*#o&+  
* @param data f o4j^,`  
*/ VAsaJ`vcb  
private void insertSort(int[] data) { Y;xVB" (  
int temp; m)=  -sD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %CD}A%~  
} vxk1RL*Xu  
} WP2|0ib  
} (!W:-|[K\  
$MB56]W8  
} t9Pu:B6  
?J%$;"q  
归并排序: i/-Xpj]Zf  
*D*K`dk  
package org.rut.util.algorithm.support; VISNmz2P  
;IXDZ#;   
import org.rut.util.algorithm.SortUtil; xwTN\7f>  
I$9 t^82j  
/** 5~aSkg,MD  
* @author treeroot y5BNHweaRb  
* @since 2006-2-2 8iqx*8}  
* @version 1.0 o_b j@X  
*/ /DQoM@X  
public class MergeSort implements SortUtil.Sort{ 9_ KUUA  
1;]cYIq  
/* (non-Javadoc) MftX~+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F>96]71 2  
*/ R l^ENrv!]  
public void sort(int[] data) { 3oE *86  
int[] temp=new int[data.length]; najd~%?Rs  
mergeSort(data,temp,0,data.length-1); v?-pAA)ht  
} m~(]\  
Rkw)IdB  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y>R|Uf.o z  
int mid=(l+r)/2; "'^#I_*Mf  
if(l==r) return ; O292JA  
mergeSort(data,temp,l,mid); !@W1d|{lu  
mergeSort(data,temp,mid+1,r); ~bdADVH  
for(int i=l;i<=r;i++){ .Rd@,3  
temp=data; u6awcn  
} =HQH;c"  
int i1=l; 0p*(<8D}  
int i2=mid+1; |L%F`K>Z:  
for(int cur=l;cur<=r;cur++){ g5; W6QX  
if(i1==mid+1) C.}Z5BwS  
data[cur]=temp[i2++]; bo0m/hVU  
else if(i2>r) _udH(NC  
data[cur]=temp[i1++]; a%Q.8  
else if(temp[i1] data[cur]=temp[i1++]; 6^if%62l&  
else CsQ}eW8uEf  
data[cur]=temp[i2++]; 9"I/jd0B  
} CLdLO u"  
} P%ev8]2  
:G9.}VrU  
} Nye Ga  
WG1Uv PK  
改进后的归并排序: ne oT\HV  
!FA^~  
package org.rut.util.algorithm.support; OzA"i y  
.%M=dL>  
import org.rut.util.algorithm.SortUtil; dSS_^E[{  
T,TKt%  
/** &g\D-At  
* @author treeroot hE/gul?|_  
* @since 2006-2-2 ,}=x8Xxr  
* @version 1.0 =L 7scv%i  
*/ ZgcA[P  
public class ImprovedMergeSort implements SortUtil.Sort { "qu%$L  
S=0zP36kH:  
private static final int THRESHOLD = 10; dScit!T"  
_o8il3  
/* :eo2t>zF-<  
* (non-Javadoc) #?@k=e\  
* "e&S*8QhM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c}U&!R2p{  
*/ ullq}}  
public void sort(int[] data) { }e9E+2}Z\  
int[] temp=new int[data.length]; {[m %1O1  
mergeSort(data,temp,0,data.length-1); QNLkj`PL/  
} _W@q%L>  
IMmoq={ (z  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6w0/;8(_m  
int i, j, k; g|9' Lk  
int mid = (l + r) / 2; </5uB' B ^  
if (l == r) :5L9tNr{_  
return; P B.@G,)  
if ((mid - l) >= THRESHOLD) t9Ht 5 4  
mergeSort(data, temp, l, mid); ReE6h\j  
else m;>HUTj  
insertSort(data, l, mid - l + 1); </>;PnzE  
if ((r - mid) > THRESHOLD) )|~pocXt<  
mergeSort(data, temp, mid + 1, r); W~$YKBW  
else 9*h?g+\  
insertSort(data, mid + 1, r - mid); * 8CI'UX  
C:"Al-  
for (i = l; i <= mid; i++) { c_s=>z  
temp = data; ,P3nZ  
} L%# #U'e3  
for (j = 1; j <= r - mid; j++) { : P>Wd3m  
temp[r - j + 1] = data[j + mid]; VC:.ya|Z  
} V*@pmOhz  
int a = temp[l]; w^s|YF=c  
int b = temp[r]; @/@#,+  
for (i = l, j = r, k = l; k <= r; k++) { 02g}}{be8  
if (a < b) { c:.k2u  
data[k] = temp[i++]; G1K5J`"*  
a = temp; ypM0}pdvTp  
} else { <Td4 o&JR  
data[k] = temp[j--]; ykrb/j|rK  
b = temp[j]; )@Fuw*  
} AifnC4  
} Bd*:y qi  
} H4ml0SS^  
9XImgeAs  
/** ijOUv6=-  
* @param data ma)Y@Uw M  
* @param l 7%) F]  
* @param i _&_#uV<WG0  
*/ MDGD*Qn~  
private void insertSort(int[] data, int start, int len) { Z& e_yl  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sPuNwVX>}I  
} 8<#X]I_eP+  
} \R#]}g0!  
} bnt>j0E  
} y=_8ae}aD~  
'te4mY}  
堆排序: AP&mr1_  
'gHa3:US  
package org.rut.util.algorithm.support; V`sINX  
;^za/h>r  
import org.rut.util.algorithm.SortUtil; M >#kfSF+  
X-%XZD B6  
/** pJ!:mt  
* @author treeroot 0Ah'G  
* @since 2006-2-2 |dcRDOTe  
* @version 1.0 &sleV5V  
*/ ,_?P[~1  
public class HeapSort implements SortUtil.Sort{ \_;z m+ <{  
&,/_"N"?D  
/* (non-Javadoc) #!(OTe L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6}zargu(;  
*/ c193Or'6Y  
public void sort(int[] data) {  MO|aN,  
MaxHeap h=new MaxHeap(); [}Vne;V  
h.init(data); `./$hh  
for(int i=0;i h.remove(); XC"]/ y  
System.arraycopy(h.queue,1,data,0,data.length); Goa0OC,  
} D=uU:7m  
VX0q!Q  
private static class MaxHeap{ ^EY^.?Mg  
p2s*'dab7  
void init(int[] data){ N]f"+  
this.queue=new int[data.length+1]; <RH2G   
for(int i=0;i queue[++size]=data; / qp)n">  
fixUp(size); nA$zp  
} 1 ;Bgtv$  
} w9h`8pt  
-8H0f- 1  
private int size=0; (`<X9w,  
f'._{"  
private int[] queue; w ryjs!  
M|IR7OtLV  
public int get() { VX#4Gh,~N  
return queue[1]; 7~(|q2ib  
} l>p S23  
|t](4  
public void remove() { /sVy"48-  
SortUtil.swap(queue,1,size--); 1 XsB  
fixDown(1); 1Z-f@PoM  
} ,ND}T#yTR  
file://fixdown +72[*_ <  
private void fixDown(int k) { x aiA2  
int j; gbF^m`A>%+  
while ((j = k << 1) <= size) { }@JPvI E  
if (j < size %26amp;%26amp; queue[j] j++; e lj]e  
if (queue[k]>queue[j]) file://不用交换 hn]><kaA  
break; DMO8~5  
SortUtil.swap(queue,j,k); NbG`v@yH  
k = j; \0. c_  
} F#d`nZ=M  
} !U,W; R  
private void fixUp(int k) { !##OQ  
while (k > 1) { 7&-i :2  
int j = k >> 1; Ps=OL\i  
if (queue[j]>queue[k]) B+W 4r9#  
break; cVCylR U"  
SortUtil.swap(queue,j,k); ON"F h'?  
k = j; 8:s" ^YLN  
} mc37Y.  
} b3Nr>(Z<}  
5k/Y7+*?E  
} qRy<W  
~@g7b`t=la  
} yKSvg5lLy  
3!]S8Y*LQP  
SortUtil: |cKo#nfzZ  
DdO$&/`)YP  
package org.rut.util.algorithm; N pu#.)G  
nSUQ Eho<  
import org.rut.util.algorithm.support.BubbleSort; 5~ho1Ud  
import org.rut.util.algorithm.support.HeapSort; p) #7K  
import org.rut.util.algorithm.support.ImprovedMergeSort; )q#1C]7m*  
import org.rut.util.algorithm.support.ImprovedQuickSort; cO}`PD$i  
import org.rut.util.algorithm.support.InsertSort; aH@GhI^@  
import org.rut.util.algorithm.support.MergeSort; <<a1a  
import org.rut.util.algorithm.support.QuickSort; T.m*LM  
import org.rut.util.algorithm.support.SelectionSort; q0* e1QL  
import org.rut.util.algorithm.support.ShellSort; eAvOT$  
6KT]3*B   
/** }@VdtH  
* @author treeroot ue?e}hF  
* @since 2006-2-2 ~ti{na4W<  
* @version 1.0 J QSp2b@'H  
*/ 7&ty!PpD  
public class SortUtil { A}K2"lQ#>,  
public final static int INSERT = 1; 9WE_9$<V  
public final static int BUBBLE = 2; lN@SfM4\  
public final static int SELECTION = 3; !2]eVO  
public final static int SHELL = 4; df@r2 /Y  
public final static int QUICK = 5; 6[cC1a3r:  
public final static int IMPROVED_QUICK = 6; vd0;33$L  
public final static int MERGE = 7; j2\B(PA  
public final static int IMPROVED_MERGE = 8; urM=l5Sx  
public final static int HEAP = 9; 1D@'uApi.  
fcDiYJC*  
public static void sort(int[] data) { j A/xe  
sort(data, IMPROVED_QUICK); Yfro^}f  
} Q:U^):~  
private static String[] name={ ^P)W/2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" j^ y9+W_b  
}; tXZE@JyuC  
jS_fwuM  
private static Sort[] impl=new Sort[]{ *Cs RO  
new InsertSort(), bU3e*Er  
new BubbleSort(), (~}P.?C8  
new SelectionSort(), G:u-C<^'  
new ShellSort(), k(<:  
new QuickSort(), Sxn#  
new ImprovedQuickSort(), 7bC1!x*qw  
new MergeSort(), ?<_yW#x6  
new ImprovedMergeSort(), TgFj- "L\  
new HeapSort() j%7N\Vb  
}; tXlo27J  
1Z. D3@  
public static String toString(int algorithm){ fgzkc"ReK  
return name[algorithm-1]; UJ hmhI  
} ED0Vlw+1  
f=$w,^)M  
public static void sort(int[] data, int algorithm) { v$H=~m  
impl[algorithm-1].sort(data); .O h4b5  
} Etv!:\\[  
B;[ai?@c(_  
public static interface Sort { -eZ$wn![  
public void sort(int[] data); >a6{y   
} c,wYXnJ_t  
&Nzq/~uqP  
public static void swap(int[] data, int i, int j) { NI^=cN,l  
int temp = data; |@Cx%aEKU  
data = data[j]; 0Yh Mwg?  
data[j] = temp; 0[\^Y<ec  
} H]^hEQ3DT  
} w+,Kpb<x[0  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八