CODE EXAMPLE FOR JAVA

Rotate array to left k cells python

def shiftLeft(source, k):
lenth = len(source)
i = 0
while(i < (lenth - k)):
    source[i] = source[i+k]
    source[i+k] = source[i]
    i += 1

source=[10,20,30,40,50,60]
a = shiftLeft(source, 3)
print(source)