DIFFERENT PATTERNS IN

ALGORITHMS

Presented ByAbhishek Kumar

B.Tech,1st Sem.(Session-2010-11)Dept. Of CIVIL Engineering

Mewar University

1. SEQUENTIAL2. SELECTIONAL3. ITERATIONAL

DIFFERENT TYPES OF ALGORITHMS

SEQUENTIAL CONSTRUCTS EXECUTE THE PROGRAM IN THE ORDER IN WHICH THEY APPEAR IN THE PROGRAM.

1.SEQUENTIAL

ALGORITHM TO CALCULATE PERSENTAGE OF MARKS IN THREE SUBJECTS.

STEP 1: START STEP 2:READ MARKS1,MARKS2, MARKS3 STEP3: SUM=MARKS1+MARKS2+MARKS3 STEP4: PERCENTAGE=(SUM*100)/300 STEP5: DISPLAY PERCENTAGE STEP6: STOP

EXAMPLE

SELECTIONAL CONSTRUCT CONTRPL THE FLOW OF STATEMENT EXECUTION IN ORDER TO ACHIEVE THE REQUIRED RESULT.

2.SELECTIONAL

ALGORITHM TO FIND WHEATHER ANUMBER IS ODD OR EVEN

STEP 1: START STEP 2:READ NUMBER STEP3: IF NUMBER%2=0 DISPLAY EVEN ELSE DISPLAY ODD STEP6: STOP

EXAMPLE

ITERATIONAL ARE USED WHEN A PART OF THE PROGRAM IS TO BE EXECUTED SEVERAL TIMES.

3.ITERATIONAL

ALGORITHM TO PRINT A TABLE OF A NUMBER

STEP 1: START STEP 2:READ NUMBER STEP3:COUNTER=1 STEP4: DISPLAY PRODUCT=NUMBER*COUNTER STEP5:COUNTER=COUNTER+1 STEP6:IF (COUNTER<=10) THEN GO TO STEP3 STEP6: STOP

EXAMPLE

ALGORITHM TO FIND AVERAGE AND WHEATHER STUDENT IS PASSED OR FAIL FOR N STUDENTS

STEP1:START STEP2:READ NUMBER OF STUDENTS STEP3:COUNTER=1 STEP4:READ MARKS1,MARKS2,MARKS3 STEP5:SUM=MARKS1+MARKS2+MARKS3 STEP6:PERCENTAGE=(SUM*100)/300

EXAMPLE BASED ON ALL PATTERN

STEP7:IF (PERCENTAGE>=65) THEN DISPLAY PASSED ELSE DISPLAY FAIL STEP8:COUNTER=COUNTER+1 STEP9:IF(COUNTER<=NO. OF STUDENTS)

THEN GO TO STEP3 STEP10:STOP

THANKING YOU