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
  • 9037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。 ='D%c^;O8'  
插入排序: HLz<C  
/Z*$k{qIR&  
package org.rut.util.algorithm.support; L|APXy]>  
r)>'cjx/  
import org.rut.util.algorithm.SortUtil; 9$v\D3<Z  
/** *-]k([wV  
* @author treeroot i| cA)  
* @since 2006-2-2 |%8t.Z  
* @version 1.0 2u_=i$xW  
*/ gYbvCs8O!  
public class InsertSort implements SortUtil.Sort{ _5n2'\] H`  
FEhBhv|m  
/* (non-Javadoc) l2W+VBn6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }` `oojz  
*/ PT,*KYF_O"  
public void sort(int[] data) { zx "EAF{  
int temp; Bi fI.2|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D_<B^3w )  
} < q(i(%  
} RgFpc*.T  
} n5xG4.#G  
o/ \o -kC}  
} 6flO;d/v  
B YB9M  
冒泡排序: 6 T~+vT  
Kg2@]J9m  
package org.rut.util.algorithm.support; (AA@ sN  
xF) .S@  
import org.rut.util.algorithm.SortUtil; *]q`:~u2  
</<z7V,{  
/** n@@tO#!\  
* @author treeroot tZ=|1lM  
* @since 2006-2-2 ^{yb4yQ 0  
* @version 1.0 )N{PWSPs  
*/ 8z=o.\@  
public class BubbleSort implements SortUtil.Sort{ "e\73?P  
O+XQP!T  
/* (non-Javadoc) oKSW:A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W{ozZuo  
*/ AS0(NlV  
public void sort(int[] data) { _kOuD}_|  
int temp; )I<VH +6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |'i ?o  
if(data[j] SortUtil.swap(data,j,j-1); ~:!& }e5  
} tMf5TiWu@  
} K'e!BZm6Q  
} "[A&S!  
} -,=)O  
Np9Pae'  
} \iEJ9V  
ZKI` ;  
选择排序: $a\X(okx  
hhjsg?4uL  
package org.rut.util.algorithm.support; v/KTEM  
B7{j$0fm*  
import org.rut.util.algorithm.SortUtil; 5.0;xz}#y  
g+.E=Ef8<4  
/** aM[fag$c  
* @author treeroot cEJ_z(\=hr  
* @since 2006-2-2 F r2 +p  
* @version 1.0 Rx%kAt2X  
*/ &#q%#M:  
public class SelectionSort implements SortUtil.Sort { ~|KMxY(:  
bg4VHT7?>)  
/* jAt6 5a  
* (non-Javadoc) `b@"GOr  
* `~=Is.V[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S9/\L6Rmf  
*/ DML0paOm5  
public void sort(int[] data) { P#A|Pn<p  
int temp; 9D%~~~ %b  
for (int i = 0; i < data.length; i++) { Q"xDRQA  
int lowIndex = i; jT QN(a9Y  
for (int j = data.length - 1; j > i; j--) { *OE>gg&?Nh  
if (data[j] < data[lowIndex]) { ~ C_2D?  
lowIndex = j; g=v[@{9Pw  
} E\}Q9, Z$  
} C$c.(5/O  
SortUtil.swap(data,i,lowIndex); 5o(=?dXm4  
} p|*b] 36  
} @qJv  
d<;XQ.Wo7  
} tK <)A)  
@D<Q'7mLh  
Shell排序: ~b4fk^u`+  
}>j1j^c1='  
package org.rut.util.algorithm.support; FUPJ&7+B  
T5U(B3j_  
import org.rut.util.algorithm.SortUtil; H @E-=Ly  
8J9o$Se  
/** {24Pv#ZG#^  
* @author treeroot 'Uo:b<  
* @since 2006-2-2 0Zl1(;hx@  
* @version 1.0 i%B$p0U<  
*/ tQ?}x#J  
public class ShellSort implements SortUtil.Sort{ \=~<I  
gwF@'Uu  
/* (non-Javadoc) !lB,2_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q%^gG03.  
*/ )=D9L  
public void sort(int[] data) { lu.2ZQE  
for(int i=data.length/2;i>2;i/=2){ ~RE`@/wQ]  
for(int j=0;j insertSort(data,j,i); Y.Ew;\6U  
} 8%U)EU  
} t,P +~ A  
insertSort(data,0,1); WqU$cQD"  
} 5O%}.}n  
*m]%eU(  
/** Z=sAR(n}~  
* @param data EA>$t\z  
* @param j AB#hh i#  
* @param i 3vs2}IV'  
*/ !*#=7^#  
private void insertSort(int[] data, int start, int inc) { ;6)|'3.B9  
int temp; CnA*o 8w  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); z KWi9  
} S"Zs'7dy`  
} pK1(AV'L  
} |s`q+ U-  
m :^,qC  
} Ox43(S0~  
)5V1H WjU  
快速排序: C ILk  
IX3U\_I#  
package org.rut.util.algorithm.support; x[oYN9O  
>"nk}@  
import org.rut.util.algorithm.SortUtil; j+ys&pDczm  
1X9sx&5H  
/** n2O7n @8  
* @author treeroot C,z]q$4  
* @since 2006-2-2 1Q;` <=  
* @version 1.0 ) DLK<10  
*/ y! 1NS  
public class QuickSort implements SortUtil.Sort{ P?uKDON  
V+K.' J ^@  
/* (non-Javadoc) ,[hJi3xM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {DO9{96w4  
*/ 0UB'6wRVo  
public void sort(int[] data) { NAocmbfNz  
quickSort(data,0,data.length-1); <(t<gS#  
} f!I e  
private void quickSort(int[] data,int i,int j){ t[ MRyi)LF  
int pivotIndex=(i+j)/2; ?^+|V,<  
file://swap q B 2#EsZ  
SortUtil.swap(data,pivotIndex,j); |O+binq  
&boBu^,94  
int k=partition(data,i-1,j,data[j]); q.X-2jjpx:  
SortUtil.swap(data,k,j); (6+0U1[Iz  
if((k-i)>1) quickSort(data,i,k-1); Ek. j@79  
if((j-k)>1) quickSort(data,k+1,j); RGKJO_*J2  
|3cR'|<Ual  
} <z4!m/f [(  
/** *ZEs5`x  
* @param data !%(B2J  
* @param i Yb\36|  
* @param j d16 PY_  
* @return \d;Ow8%d/  
*/ LMDa68 s  
private int partition(int[] data, int l, int r,int pivot) { %~[F^  
do{ #WG(V%f]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OWkK]O  
SortUtil.swap(data,l,r); {gn[ &\  
} jHZ<G c  
while(l SortUtil.swap(data,l,r); @'y"D  
return l; $7*Ml)H!9  
} vtT:c.~d  
m1hf[cg  
} *\>2DUu\`  
, $=V  
改进后的快速排序: ,5*4%*n\  
j?(QieBH  
package org.rut.util.algorithm.support; fe$WR~  
),Rj@52l  
import org.rut.util.algorithm.SortUtil; &_6:TqJ  
,O+7nByi[V  
/** 1$W!<:uh  
* @author treeroot ~}116K  
* @since 2006-2-2 M/qiA.C@W  
* @version 1.0 N@>S>U8C  
*/ lo#,zd~  
public class ImprovedQuickSort implements SortUtil.Sort { I R&u55#I6  
S'e2~-p0F  
private static int MAX_STACK_SIZE=4096;  Ui.F<,E  
private static int THRESHOLD=10; ^eRuj)$5A  
/* (non-Javadoc) @mazwr{B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -wt2ydzos  
*/ V]2z5u_q  
public void sort(int[] data) { kShniN  
int[] stack=new int[MAX_STACK_SIZE]; ublY!Af  
gs3}rW  
int top=-1; A.FI] K@  
int pivot; 73.b9mF  
int pivotIndex,l,r; m~K]|]iqQ  
tQ67XAb  
stack[++top]=0; {mQJ6 G'ny  
stack[++top]=data.length-1; pf_ /jR  
2 ^aTW`>L  
while(top>0){ >seB["C  
int j=stack[top--]; !ZZAI_N  
int i=stack[top--]; SOL=3hfb^  
~83P09\T%  
pivotIndex=(i+j)/2; 1DP)6{x  
pivot=data[pivotIndex]; @6SSk=9_S  
ik*_,51Zj  
SortUtil.swap(data,pivotIndex,j); @n(In$  
^q` *!B 9@  
file://partition Vmc)or*#  
l=i-1; $%-?S]6)  
r=j; Ymu=G3-  
do{ ZIp=JR8o$  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); u/f&Wq/  
SortUtil.swap(data,l,r); =)8Ct  
} 68*{Lo?U  
while(l SortUtil.swap(data,l,r); |*5nr5c_L  
SortUtil.swap(data,l,j); qg/5m;U  
gib]#n1!p  
if((l-i)>THRESHOLD){ z"#.o^5  
stack[++top]=i; !)=o,sVA  
stack[++top]=l-1; CmOb+:4@K  
} @gc"-V*-/  
if((j-l)>THRESHOLD){ EoeEg,'~F  
stack[++top]=l+1; 4o3GS8  
stack[++top]=j; `N|CL  
} %K7}yy&9C  
cw.7YiU  
} M\f0 =`g  
file://new InsertSort().sort(data); s|T7)PgR  
insertSort(data); =.a ]?&Yyh  
} M6sDtL9l  
/** s_LSs yqo  
* @param data A\)X&vR[6  
*/ |Y11sDa9h  
private void insertSort(int[] data) { ]r6bJ 2  
int temp; Bl];^W^P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6pR#z@,  
} $@)d9u cd  
} HV.7IyBA^  
} #8jd,I% L  
3)a29uc:U  
} ltR^IiA}  
(SK5pU  
归并排序: ]w>fnew  
FF/R_xnx  
package org.rut.util.algorithm.support; E,@UM$alP  
df& |Lc1J  
import org.rut.util.algorithm.SortUtil; [B`P]}gL:  
;G]'}$`/q  
/** :\_MA^<  
* @author treeroot F.D1;,x  
* @since 2006-2-2 .<%M8rcj  
* @version 1.0 ud D[hPJd  
*/ 59J9V3na  
public class MergeSort implements SortUtil.Sort{ UAZ&*{MM^  
hJsC \C,^  
/* (non-Javadoc) ,v_r$kh^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y;Gm,  
*/ YPnJldVn  
public void sort(int[] data) { ':]a.yA\1  
int[] temp=new int[data.length]; K3DJ"NJ<Ji  
mergeSort(data,temp,0,data.length-1); TP::y  
} j:3Hm0W3  
Ai18]QD-  
private void mergeSort(int[] data,int[] temp,int l,int r){  u$8MVP  
int mid=(l+r)/2; v!A|n3B]p  
if(l==r) return ; wt S*w  
mergeSort(data,temp,l,mid); ,&] ` b#Rc  
mergeSort(data,temp,mid+1,r); CJ  
for(int i=l;i<=r;i++){ t}*!UixE  
temp=data; /8\&f %E  
} +Uq:sfj,  
int i1=l; 1C=P#MU`  
int i2=mid+1; /ASI 0h  
for(int cur=l;cur<=r;cur++){ P'9io!Z-s  
if(i1==mid+1) WI_mJ/2  
data[cur]=temp[i2++]; Y26l,XIV  
else if(i2>r) `0|&T;7  
data[cur]=temp[i1++]; 8T )ELhTj  
else if(temp[i1] data[cur]=temp[i1++]; JSK5x(GlH  
else ,D,f9  
data[cur]=temp[i2++]; y|{?>3  
} \'Kj.EO{?$  
} #`0z=w/)  
ya g  
} }#5roNH~Z  
ItE~MJ5p  
改进后的归并排序: a' o8n6i  
= [os<+  
package org.rut.util.algorithm.support; h\\2r>  
Q$/FgS  
import org.rut.util.algorithm.SortUtil; "0zXpQi,B  
M|e n>P  
/** (Gc`3jJ  
* @author treeroot =3dbw8I  
* @since 2006-2-2 <|Eby!KXR  
* @version 1.0 |S`yXsg  
*/ 'xoE [0!  
public class ImprovedMergeSort implements SortUtil.Sort { n4T2'e  
p+UHJ&  
private static final int THRESHOLD = 10; <JM%Kn )  
^Jl!WH=20}  
/* +gCy@_2;  
* (non-Javadoc) P Xn>x8z  
* 1'm`SRX#e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i}F;fWZ`  
*/ )h_ 7 2  
public void sort(int[] data) { !nBm}E7d  
int[] temp=new int[data.length]; [k 7N+W8  
mergeSort(data,temp,0,data.length-1); fUKdC \WL  
} udI: ]:,P  
`+Z#*lj|@  
private void mergeSort(int[] data, int[] temp, int l, int r) { bK$D lBZ  
int i, j, k; rRrW   
int mid = (l + r) / 2; mW0&uSM D  
if (l == r) ieRBD6_  
return; G:C6`uiy`  
if ((mid - l) >= THRESHOLD) 8kM0  
mergeSort(data, temp, l, mid); <ZC^H  
else '# IuY  
insertSort(data, l, mid - l + 1); JX$NEq(  
if ((r - mid) > THRESHOLD) (g2r\hI  
mergeSort(data, temp, mid + 1, r); NF(IF.8G  
else XAxI?y[c  
insertSort(data, mid + 1, r - mid); `m;"I  
Q[Sd  
for (i = l; i <= mid; i++) { s5aOAyb*w  
temp = data; (VPM>ndkw  
} K(KP3Q  
for (j = 1; j <= r - mid; j++) { ) wo2GF  
temp[r - j + 1] = data[j + mid];  [Ro0eH  
} /Q>{YsRRB  
int a = temp[l]; 3/IWO4?_  
int b = temp[r]; dzE Q$u/I  
for (i = l, j = r, k = l; k <= r; k++) { ?$@ KwA  
if (a < b) { m-S33PG{  
data[k] = temp[i++]; &G|jzXE  
a = temp; YEPG[W<kg  
} else { 5OW8G][  
data[k] = temp[j--]; b|8>eY  
b = temp[j]; ,#jhKnk2e  
} +9 p`D  
} 2|H91Y2  
} &c?hJ8"  
Ed0>R<jR9  
/** q|$>H6H4b  
* @param data W*rU,F|9  
* @param l NRuG?^/}d  
* @param i #[0\=B -  
*/ BOiz ~h6  
private void insertSort(int[] data, int start, int len) { ctUF/[_w;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g=g.GpFt  
} <AAZ8#^  
} r|\'9"@  
} eo*u(@  
} 6n6VEwYj  
[T[9*6Kt  
堆排序: 6:@t=C  
 e(;`9T  
package org.rut.util.algorithm.support; 'UvS3]bSYW  
@wdB%  
import org.rut.util.algorithm.SortUtil; kGuk -P  
$sL|'ZMbS  
/** q>|[JJ*6_N  
* @author treeroot & A9A#It  
* @since 2006-2-2 #C,f/PXfaB  
* @version 1.0 bu"68A;>  
*/ 3 +8"  
public class HeapSort implements SortUtil.Sort{ ,+f0cv4  
m~j\?mb{+  
/* (non-Javadoc) 7=p-A _X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'D0X?2  
*/ R|)2Dg  
public void sort(int[] data) { |N=@E,33  
MaxHeap h=new MaxHeap(); [ 4Y `O  
h.init(data); `k}l$ih`X  
for(int i=0;i h.remove(); e9Ul A  
System.arraycopy(h.queue,1,data,0,data.length); Il^ \3T+  
} BvZ^^IUb  
<` p75B  
private static class MaxHeap{ APtselC  
7tfivIj)e  
void init(int[] data){ !,6v=n[Nz  
this.queue=new int[data.length+1]; _D2bGZN  
for(int i=0;i queue[++size]=data; Y7:Y{7E7  
fixUp(size); 9"HmHy&:E  
} \Ul.K!b7  
} |DFvZ6}  
}rY?=I  
private int size=0; }$0xt'q&  
QLB1:O>  
private int[] queue; g<rKV+$6  
RFn0P)9&  
public int get() { Oa}V>a  
return queue[1]; VTJIaqw  
} i#]aV]IT  
1t\b a1x  
public void remove() { Z4HA94  
SortUtil.swap(queue,1,size--); o1#:j?sN  
fixDown(1); AJ#m6`M+EK  
} .W@(nQ-<  
file://fixdown $['7vcB^  
private void fixDown(int k) { Tn@UX(^,  
int j; g* \P6  
while ((j = k << 1) <= size) { Yt/SnF  
if (j < size %26amp;%26amp; queue[j] j++; ,\S pjE  
if (queue[k]>queue[j]) file://不用交换 da00p-U  
break; hSkc9jBF  
SortUtil.swap(queue,j,k); W3jXZ>  
k = j; 0tW<LR-}E  
} Pn+IJ=0Y  
} ,XeyE;||  
private void fixUp(int k) { 9b"9m*gC  
while (k > 1) { `s>UU- 9  
int j = k >> 1; ib(>vp$V  
if (queue[j]>queue[k]) SvX=isu!.  
break; U BhciZ  
SortUtil.swap(queue,j,k); Y3P.|  
k = j; ] ;pf  
} ]<8B-D?Z  
} 8NaL{j1`  
zmB31' _  
} FI1THzW4J  
GJIWG&C03  
} >k&8el6h  
Q$|^~  
SortUtil: R,x>$n  
GP[6nw_'^  
package org.rut.util.algorithm; <DeKs?v  
J7'f@X~nM  
import org.rut.util.algorithm.support.BubbleSort; X!7VyE+n  
import org.rut.util.algorithm.support.HeapSort; ] Wx>)LT  
import org.rut.util.algorithm.support.ImprovedMergeSort; IP30y>\  
import org.rut.util.algorithm.support.ImprovedQuickSort; mFqSD  
import org.rut.util.algorithm.support.InsertSort; " K 8&{=  
import org.rut.util.algorithm.support.MergeSort; ySwYV  
import org.rut.util.algorithm.support.QuickSort; Cdp]Nv6  
import org.rut.util.algorithm.support.SelectionSort; 4?>18%7&  
import org.rut.util.algorithm.support.ShellSort; I!$jYY2  
Ic[}V0dk  
/** i<4>\nc  
* @author treeroot pKt-R07*  
* @since 2006-2-2 )YzHk ;(  
* @version 1.0 fJ)N:q`  
*/ fg9?3x Z  
public class SortUtil { JJ/1daj  
public final static int INSERT = 1; ,&.W6sW  
public final static int BUBBLE = 2; Z0 [)u_<  
public final static int SELECTION = 3; )%iRZ\`f  
public final static int SHELL = 4; F>~ xzc  
public final static int QUICK = 5; JkSdLj  
public final static int IMPROVED_QUICK = 6; yaH Trh%  
public final static int MERGE = 7; -ajM5S=d*  
public final static int IMPROVED_MERGE = 8; IPl@ DH  
public final static int HEAP = 9;  SwdC,  
I#|ocz  
public static void sort(int[] data) { .q0218l:dF  
sort(data, IMPROVED_QUICK); ;YK!EMM4!h  
} Aautih@LX  
private static String[] name={ gEZwW]r-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NXzU0  
}; tmO;:n<N  
)Qh>0T+(  
private static Sort[] impl=new Sort[]{ cS<TmS!  
new InsertSort(), Qw24/DJK  
new BubbleSort(), Z69+yOJI  
new SelectionSort(), N#(jK1` y  
new ShellSort(), 8{R_6BS  
new QuickSort(), ! jbEm8bt  
new ImprovedQuickSort(), _Kc 1  
new MergeSort(), Dh2:2Rz=#7  
new ImprovedMergeSort(), 2.[_t/T  
new HeapSort() Y%<`;wK=^  
}; #*!+b  
(Ij0AeJ#  
public static String toString(int algorithm){ 9o-!ecx}  
return name[algorithm-1]; x}tKewdOSe  
} <jbj/Q )"  
Wgxn`6  
public static void sort(int[] data, int algorithm) { /Zo~1q  
impl[algorithm-1].sort(data); z>4 D~HX  
} W8f`J2^"M  
BJ~ ivT<  
public static interface Sort { {5T0RL{\N  
public void sort(int[] data); 9*#$0Y=  
} G1}~.%J  
1#grB(p?  
public static void swap(int[] data, int i, int j) { x!'7yx  
int temp = data; hVMYB_<~  
data = data[j];  X ?tj$  
data[j] = temp; o_iEkn  
} pG/ NuImA  
} yh S#&)O  
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 或 注册
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八