python range number code example

Example 1: for i in range start

for i in range([start], stop[, step])

Example 2: python range

# range(start, stop, step)
  # start = (can be ommitted) index to begin at (INCLUSIVE)
  # stop = generate numbers up to, but not including this number (EXCLUSIVE)
  # step = (can be omitted) difference between each number in the sequence

# idx:  0	1	2	3 	4
# arr:  19	5	3	22	13
  
arr = [19,5,3,22,13]

# range(stop)
for i in range(len(arr)):
    print(arr[i]) # prints: 19, 5, 3, 22, 13

# range(start, stop)
for i in range(2, len(arr)):
    print(arr[i]) # prints: 3, 22, 13
    
# range(start, stop, step)
for i in range(0, len(arr), 2):
    print(arr[i]) # prints: 19, 3, 13
    
# reverse:
for i in range(len(arr)-1, -1, -1):
    print(arr[i])

Example 3: class range python code

class Range:
   def __init__(self, start, end):
      self.setStart(start)
      self.setEnd(end)
   def getStart(self):
      return self.start
   def setStart(self, s):
      self.start = s
   def getEnd(self):
      return self.end
   def setEnd(self, e):
      self.end = e
   def getLength(self):
      return len(range(self.start, self.end))
   def overlaps(self, r):
      if (r.getStart() < self.getEnd() and r.getEnd() >= self.getEnd()) or \
         (self.getStart() < r.getEnd() and self.getEnd() >= r.getEnd()) or \
         (self.getStart() >= r.getStart() and self.getEnd() <= r.getEnd()) or \
         (r.getStart() >= self.getStart() and r.getEnd() <= self.getEnd()):
          return True
      else:
          return False

Example 4: range() python

#can be used a sequence of numbers
x = range(6)
print(x)
#Outputs 0 1 2 3 4 5

for i in range(start,finish ,step) 
#gives range of numbers
#start is optional default is 0
#finish needed specifying when to stop
#step is incremetntaition of jump also optional