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
  • 6524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。 2. t'!uwI  
插入排序: y3^>a5z!x  
>j%4U*  
package org.rut.util.algorithm.support; rV5QKz6'  
9fj8r3 F#  
import org.rut.util.algorithm.SortUtil; 5s /fBS  
/** rAuv`.qEV  
* @author treeroot n'i~1pM,?  
* @since 2006-2-2 *(w#*,lv  
* @version 1.0 W%&[gDp  
*/ 6 _Cc+}W  
public class InsertSort implements SortUtil.Sort{ Xy[*)<  
R9-Ps qmF  
/* (non-Javadoc) <,X?+hr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]b&"](A  
*/ uhf% z G  
public void sort(int[] data) { &_Vd  
int temp; It@1!_tO2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _d J"2rx  
} B]_NI=d  
} &B c$8ZR  
} W["c3c  
K'DRX85F  
} 1>"Yw|F-|3  
8b!-2d:*  
冒泡排序: :wcv,YoSG  
b-Uy&+:X*d  
package org.rut.util.algorithm.support; Ra~|;( %d  
ww^!|VVa  
import org.rut.util.algorithm.SortUtil; @/yQ4Gr  
]?/7iM  
/** wpW3%r;9  
* @author treeroot Nfdh0v  
* @since 2006-2-2 ` yXJaTbo  
* @version 1.0 ^5,B6  
*/ ndB [f  
public class BubbleSort implements SortUtil.Sort{ cCWk^lF],  
7G 3*@cl  
/* (non-Javadoc) IFd2r;W8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6+Bccqn|  
*/ c1CUG1i  
public void sort(int[] data) { $Lf-Gi  
int temp; 8h=Rfa9  
for(int i=0;i for(int j=data.length-1;j>i;j--){ t(sQw '>  
if(data[j] SortUtil.swap(data,j,j-1); rf[w&~R  
} ML= :&M!ao  
} 0)Wrfa  
} "^3pP(8;~  
} ex}6(;7)O  
q n2X._`  
} <lxE^M  
/#]4lFk:h  
选择排序: 2uajK ..b  
6Pzz= ai<  
package org.rut.util.algorithm.support; _w\A=6=q|  
rERHfr`OU  
import org.rut.util.algorithm.SortUtil; ~Y3"vdd  
:t#N.[=&#  
/** s<;kTReA  
* @author treeroot dEuts*@ Q  
* @since 2006-2-2 9}_ccq  
* @version 1.0 hCX_^%  
*/ W.O]f.h  
public class SelectionSort implements SortUtil.Sort { p\&Lbuzv  
{G^f/%  
/* ,%uK^U.zk  
* (non-Javadoc) d4]9oi{}  
* F]4JemSjK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sBuOKT/j  
*/ {;T7Kg.C  
public void sort(int[] data) { )t#v55M  
int temp; o(5eb;"yi>  
for (int i = 0; i < data.length; i++) { BIM!4MHLA  
int lowIndex = i; I6B`G Im5  
for (int j = data.length - 1; j > i; j--) { $QB~ x{v@n  
if (data[j] < data[lowIndex]) { 0qPbmLMK  
lowIndex = j; g AZe&"K  
} v.~uJ.T  
} u}:p@j}Zv  
SortUtil.swap(data,i,lowIndex); ; wpX  
} XX:?7:j}[8  
} c<c"n'  
HLYTt)f}  
}  \W',g[Y:  
ff3HR+%M  
Shell排序: &~SPDiu.t  
#,4CeD|(D,  
package org.rut.util.algorithm.support; -3)]IA  
Up/s)8$.  
import org.rut.util.algorithm.SortUtil; fZH";_"1  
2 u{"R  
/** {ejJI/o0  
* @author treeroot 42Vz6 k:  
* @since 2006-2-2 \~O}V~wE  
* @version 1.0 L,<5l?u  
*/ H1bPNt63  
public class ShellSort implements SortUtil.Sort{ ~ }g"Fe  
p903 *F^[,  
/* (non-Javadoc) L#|, _j=9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "{&?t}rj+  
*/ l?AWG&  
public void sort(int[] data) { e9 `n@  
for(int i=data.length/2;i>2;i/=2){ Xaca=tsO  
for(int j=0;j insertSort(data,j,i); =DT7]fU  
} "0&+ `7  
} -b7q)%V  
insertSort(data,0,1); .8O.  
} z'(][SB  
Ca?:x tt  
/** z TM1 e  
* @param data C]xKdPQj%  
* @param j h dw~AGO#  
* @param i %O! ~!'  
*/ :JEzfI1  
private void insertSort(int[] data, int start, int inc) { 'rX!E,59  
int temp; B}(+\Q$I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); $GR 3tLzK:  
} k6p Xc<]8  
} 2GHmA_7P  
} #})OnM^],  
qNH= W?T8.  
} + \DGS  
^x:%_yGY  
快速排序: ]4$t'wI.  
YCWt%a*I'  
package org.rut.util.algorithm.support; Q}A*{9#|  
K_fQFuj+  
import org.rut.util.algorithm.SortUtil; EEU)eltI  
/]mfI&l+9  
/** 0&YW#L|J  
* @author treeroot D]{#!w(d  
* @since 2006-2-2 ~ .FZF  
* @version 1.0 nO'lN<L  
*/ <vP{U  
public class QuickSort implements SortUtil.Sort{ x/UmpJD+  
Spnshv8  
/* (non-Javadoc) efK|)_i :  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }bW"Z2^nB  
*/ sNet[y:O3  
public void sort(int[] data) { rYp]RX>  
quickSort(data,0,data.length-1); 8: x{  
} ': }  
private void quickSort(int[] data,int i,int j){ Z|8oD*,  
int pivotIndex=(i+j)/2; YH0=Y mU#X  
file://swap yBd#*3K1  
SortUtil.swap(data,pivotIndex,j); th$?#4SbR  
OwdA6it^f  
int k=partition(data,i-1,j,data[j]); {hS9FdWA;  
SortUtil.swap(data,k,j); q&j4PR{  
if((k-i)>1) quickSort(data,i,k-1); 9]{(~=D7  
if((j-k)>1) quickSort(data,k+1,j); 6 J&_H(^  
j~|pSu.<  
} .4jU G=  
/** BrWo/1b  
* @param data #6'x-Z_  
* @param i KA=cIm  
* @param j r#% e$  
* @return @w8MOT$  
*/ w^_[(9 `  
private int partition(int[] data, int l, int r,int pivot) { W^es"\  
do{ -3z$~ {  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !\)9fOLs  
SortUtil.swap(data,l,r); aBBTcN%'  
} @v#]+9F  
while(l SortUtil.swap(data,l,r); TA2?Ia;@xV  
return l; gc ce]QS  
} 3gUGfe di  
=i`#0i2(  
} WOv m%sX  
aSN"MTw.  
改进后的快速排序: 'Ti7}K  
sX8?U,u  
package org.rut.util.algorithm.support; u?ALZxj?  
l8$7N=Y  
import org.rut.util.algorithm.SortUtil; lY.{v]i }  
k*?Axk#  
/** zKnHo:SV  
* @author treeroot QR.]?t;1  
* @since 2006-2-2 ZwC\n(_y  
* @version 1.0 Hn- k*Y/P  
*/ ?3I93Bt7  
public class ImprovedQuickSort implements SortUtil.Sort { Y[0  
q1|! oQ  
private static int MAX_STACK_SIZE=4096; @TvoCDeI  
private static int THRESHOLD=10; z_A:MoYf o  
/* (non-Javadoc) 2I8 RO\zR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {J?#KHF'|  
*/ f|U J%}$v;  
public void sort(int[] data) { c`F~vrr)X  
int[] stack=new int[MAX_STACK_SIZE]; jkN-(v(T  
zFR=inI  
int top=-1; H.n+CR  
int pivot; 5D~>Ed;  
int pivotIndex,l,r; 53i7:1[uV  
,X&(BQj h  
stack[++top]=0; hj8S".A_  
stack[++top]=data.length-1; ,{pC1A@s  
A#WvN>  
while(top>0){ jRCf!RO  
int j=stack[top--]; W@T_-pTCjK  
int i=stack[top--]; DKvNQ:fI>9  
P ]prrKZe,  
pivotIndex=(i+j)/2; `;:zZ8*  
pivot=data[pivotIndex]; F1q a`j^'  
09r0Rb  
SortUtil.swap(data,pivotIndex,j); t$*V*gK{  
g4`)n`  
file://partition U,Duq^l~s  
l=i-1; }gfs  
r=j; DNh{J^S"}w  
do{ J[?7`6\M  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); t!u{sr{j=  
SortUtil.swap(data,l,r); G OzV#  
} h/AL `$  
while(l SortUtil.swap(data,l,r); #Is/j =  
SortUtil.swap(data,l,j); y{`aM(&  
~I_v {  
if((l-i)>THRESHOLD){ -%h0`hOG{  
stack[++top]=i; w|;kL{(W  
stack[++top]=l-1; 9T#JlV  
} qXb{A*J  
if((j-l)>THRESHOLD){ (Vvs:h%H  
stack[++top]=l+1; (t{m(;/  
stack[++top]=j; v)TFpV6b{p  
} XQH wu  
"]"!"#aMv  
} <gdKuoY  
file://new InsertSort().sort(data); x D(RjL+  
insertSort(data); [T5z}!_y  
} T9c=As_EM  
/** #]BpTpRAe<  
* @param data ?;//%c8,.  
*/ XHN`f#(w  
private void insertSort(int[] data) { -d|VXD5N  
int temp; j.5;0b_L^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); /!u#S9_B  
} r%QnV0L^  
} o`!7 ~n  
} 0%m}tfQ5  
@rTAbEk{U  
} \mBH6GS  
(IrX \Y  
归并排序: \[-z4Fxg|'  
s`bC?wr5h  
package org.rut.util.algorithm.support; 49BLJ|:P?  
~4{E0om@  
import org.rut.util.algorithm.SortUtil; _>/T<Db  
2WA =U]  
/** 7\q_^  
* @author treeroot dwQ*OxFl  
* @since 2006-2-2 K-xmLEu  
* @version 1.0 R/yOy ^<  
*/ }x[d]fcC  
public class MergeSort implements SortUtil.Sort{  n(mS  
Ozygr?*X  
/* (non-Javadoc) <z>K{:+>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) OqQz7'  
*/ !`BK%m\8  
public void sort(int[] data) { )P{I<TBI;  
int[] temp=new int[data.length]; ZU vA`   
mergeSort(data,temp,0,data.length-1); U#B,Q6~  
} [ imC21U  
3wS{@'  
private void mergeSort(int[] data,int[] temp,int l,int r){ X9:(}=E V  
int mid=(l+r)/2; )$#r6fQO  
if(l==r) return ; 8Ee bWs*1  
mergeSort(data,temp,l,mid); &M)S~Hb^  
mergeSort(data,temp,mid+1,r); W~1/vJ.*l  
for(int i=l;i<=r;i++){ @~!1wPvF`I  
temp=data; u5f+%!p  
} + *YGsM`E9  
int i1=l; $z7[RLu0!  
int i2=mid+1; pai>6p  
for(int cur=l;cur<=r;cur++){ (8!#<$  
if(i1==mid+1) z.H*"r  
data[cur]=temp[i2++]; fwy-M:  
else if(i2>r) zS Yh ?NB5  
data[cur]=temp[i1++]; O<R6^0B42  
else if(temp[i1] data[cur]=temp[i1++]; ,w.`(?I/  
else 0Fw0#eE  
data[cur]=temp[i2++]; jafq(t  
} TQ? D*&  
} 9T47U; _)  
r9Ux=W\  
} UarU.~Uqi  
>'i d/  
改进后的归并排序: U*Z P>Vv  
ZQvpkO7}M  
package org.rut.util.algorithm.support; JM{S49Lx  
G"jKYW  
import org.rut.util.algorithm.SortUtil; hFw\uETu  
Sti)YCXH  
/** khl(9R4a  
* @author treeroot {xw*H<"f<  
* @since 2006-2-2 k]<  
* @version 1.0 EXDtVa Ot  
*/ -ob_]CKtJ~  
public class ImprovedMergeSort implements SortUtil.Sort { %3e}YQe)  
DBl.bgf  
private static final int THRESHOLD = 10; 4BG6C'`%  
U,C L*qTF  
/* ND\&#  
* (non-Javadoc) ?lv{;4BC  
* y D.S"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J/j1Yf'9  
*/ 5y! 4ny _  
public void sort(int[] data) { buo_H@@p{s  
int[] temp=new int[data.length]; B&0^3iKFi  
mergeSort(data,temp,0,data.length-1); - Z"w  
} eL9 RrSXz  
*=L3bBu?  
private void mergeSort(int[] data, int[] temp, int l, int r) { PY: l  
int i, j, k; :g3n [7wR  
int mid = (l + r) / 2; (veGztt  
if (l == r) -zg,pK$+  
return; #Nxk3He]8  
if ((mid - l) >= THRESHOLD) `rC9i5:  
mergeSort(data, temp, l, mid); e#K =SV!H  
else !v|j C  
insertSort(data, l, mid - l + 1); )((Jnm D  
if ((r - mid) > THRESHOLD) 9|dgmEd  
mergeSort(data, temp, mid + 1, r); ~oI7TP  
else W-%oj.BMA  
insertSort(data, mid + 1, r - mid); IC+Z C   
#M6@{R2_  
for (i = l; i <= mid; i++) { $j^Jj  
temp = data; / Dj6Bj }  
} \`o+Le+%  
for (j = 1; j <= r - mid; j++) { .MuS"R{y  
temp[r - j + 1] = data[j + mid]; aksyr$d0V<  
} oD_je~b)  
int a = temp[l]; au2 ieZZ[  
int b = temp[r]; 9@Yk8  
for (i = l, j = r, k = l; k <= r; k++) { "<0BCJJ  
if (a < b) { $<2r;'?0D  
data[k] = temp[i++]; 9 )u*IGj  
a = temp; T F&xiL^  
} else { 8 s!0Z1Roc  
data[k] = temp[j--]; O^hWG ~o  
b = temp[j]; LF <fp&C)h  
} aOfL;I  
} T5NO}bz  
} }kI-UEn$EP  
-_.)~ )P  
/** 7+JQaYO`"  
* @param data E#r6e+e1Q%  
* @param l 0P sp/H%  
* @param i ),0_ C\  
*/ `GS!$9j  
private void insertSort(int[] data, int start, int len) { B#AAG*Ai8  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); G!k&'{2  
} Lv+lLK  
} LYNd^}  
} 64>E|w  
} x)l}d3   
CL|t!+wU/  
堆排序: 5j1}?0v_  
LU~U>  
package org.rut.util.algorithm.support; UvRa7[<y%%  
+I#4+0f  
import org.rut.util.algorithm.SortUtil; }UZ$<81=  
{o< 4 ^  
/** G!T)V2y  
* @author treeroot S9}P 5;u  
* @since 2006-2-2 :.f =>s]  
* @version 1.0 o!^':mll  
*/ G*uy@s:  
public class HeapSort implements SortUtil.Sort{ :X Er{X  
Um]>B`."wK  
/* (non-Javadoc) mza1Q~<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JYOyz+wNd  
*/ /ZHuT=j1  
public void sort(int[] data) { ,,S5 8\x  
MaxHeap h=new MaxHeap(); [[P?T^KT  
h.init(data); }MW*xtGV  
for(int i=0;i h.remove(); ~{iBm"4  
System.arraycopy(h.queue,1,data,0,data.length); B2:6=8<  
} 55MsF}p  
)(TaVHJR  
private static class MaxHeap{ ]S<eO6z  
RoSh|$JF  
void init(int[] data){ #P=rP=  
this.queue=new int[data.length+1]; U(]a(k<r  
for(int i=0;i queue[++size]=data; BusD}9QqB  
fixUp(size); Q ,30  
} |`_qmk[:R  
} p;`jmF   
dX{|-;6vm  
private int size=0; xOP%SF  
xCF k1%qf  
private int[] queue; E ;65kZ  
F7gipCc1We  
public int get() { TKj8a(R_  
return queue[1]; f305yo  
} DZ5%-  
I>o+INb:  
public void remove() { m5Q,RwJ!xK  
SortUtil.swap(queue,1,size--); H!Z=}>TN  
fixDown(1); 8o#*0d|  
} mv|eEz)r  
file://fixdown Ke '?  
private void fixDown(int k) { eU 'DQp*  
int j; "_]n_[t2C  
while ((j = k << 1) <= size) { iM+K&\{_h  
if (j < size %26amp;%26amp; queue[j] j++; 1OK,r`   
if (queue[k]>queue[j]) file://不用交换 !c[(#g  
break; \c3zK|^  
SortUtil.swap(queue,j,k); }UJS*mR  
k = j; S%<RV6{aiM  
} <h:>:%#k  
} jm0J)Z_"nr  
private void fixUp(int k) { n#t{3qzpD  
while (k > 1) { Q1 ?O~ao  
int j = k >> 1; < gB>j\:  
if (queue[j]>queue[k]) { 2G9>'  
break; sE@t$'=  
SortUtil.swap(queue,j,k); :L#t?~  
k = j; QEK,mc3  
} Nq6~6Rr  
} Fj}|uiOQUS  
sc'QNhrW  
} ;cd{+0  
BV,P;T0"D  
} qOYCQ  
LWE[]1=  
SortUtil: bg;N BoZd  
?;@xAj  
package org.rut.util.algorithm; E;$)Oz  
p>4$&-  
import org.rut.util.algorithm.support.BubbleSort; c=]qUhnH  
import org.rut.util.algorithm.support.HeapSort; T.O^40y  
import org.rut.util.algorithm.support.ImprovedMergeSort; P5/K?I~/So  
import org.rut.util.algorithm.support.ImprovedQuickSort; d!kiWmw,  
import org.rut.util.algorithm.support.InsertSort; D|m6gP;P  
import org.rut.util.algorithm.support.MergeSort; S o; ;  
import org.rut.util.algorithm.support.QuickSort; | n5F_RL  
import org.rut.util.algorithm.support.SelectionSort; 6z v+Av:  
import org.rut.util.algorithm.support.ShellSort; meunAEe  
v(D{_  
/** 1;cV [&3  
* @author treeroot }rf_:  
* @since 2006-2-2 U;Z6o1G  
* @version 1.0 s\QhCS  
*/ N"M K 0k  
public class SortUtil { 4]9+   
public final static int INSERT = 1; <![tn#_  
public final static int BUBBLE = 2; AY4ZU CqI  
public final static int SELECTION = 3; p'UYH t  
public final static int SHELL = 4; A5-y+   
public final static int QUICK = 5; (\m4o   
public final static int IMPROVED_QUICK = 6; `$oGgz6ZT  
public final static int MERGE = 7; "3o{@TdU  
public final static int IMPROVED_MERGE = 8; #g[jwl'  
public final static int HEAP = 9; (7BG~T  
&.z: i5&o!  
public static void sort(int[] data) { f`'?2  
sort(data, IMPROVED_QUICK); ry9%Y3  
} %7=B?c |  
private static String[] name={ >Ia{ZbQV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" cF!ygz//  
}; vmdu9"H  
)W9W8>Cc5_  
private static Sort[] impl=new Sort[]{ ?dMyhU}  
new InsertSort(), +c4]}9f!  
new BubbleSort(), pQ%~u3  
new SelectionSort(), e! V`cg0  
new ShellSort(), C9zQ{G  
new QuickSort(), &LM@_P"T  
new ImprovedQuickSort(), #4S">u  
new MergeSort(), M{I8b<hY  
new ImprovedMergeSort(), am,UUJ+h>  
new HeapSort() -w nlJi1f  
}; 0'y9HE'e  
; (I(TG  
public static String toString(int algorithm){ `Wq4k>J}*  
return name[algorithm-1]; D?;8bI%"  
} |uo<<-\jTO  
 fp!Ba  
public static void sort(int[] data, int algorithm) { <)n8lIK  
impl[algorithm-1].sort(data); J.'}R2gT1  
} ?K, xxH  
=^ur@E  
public static interface Sort { ,{wA%Oy,  
public void sort(int[] data); h+EG) <  
} .ko8`J%%M  
9x;CJhX  
public static void swap(int[] data, int i, int j) { W,&z:z>  
int temp = data; 1haH2F^ q3  
data = data[j]; 0}:- t^P  
data[j] = temp; L3[r7 b  
} V,t&jgG*  
} !ceT>i90h  
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
温馨提示:欢迎交流讨论,请勿纯表情、纯引用!
认证码:
验证问题:
10+5=?,请输入中文答案:十五