Scramble Exercise: la Mode The mode of a list is the element which occurs most frequently (the one which appears the maximum number of times). Unscramble the following program so that mode(L) correctly finds the mode, assuming L is a list of numbers from 0 to 9. (On our tests, there won't be two numbers tied for the maximum frequency.) def mode(L): frequency[i] = frequency[i] + 1 if frequency[i]==max(frequency): return i for i in range(0, 10): for i in L: frequency = [0]*10 Run program Coding Exercise: The Replacements Using index and other list methods, write a function replace(list, X, Y) which replaces all occurrences of Xin list with Y. For example, if L [3, 1, 4, 1, 5, 9] then replace(L, 1, 7) would change the contents of L to [3, 7, 4, 7, 5, 9]. To make this exercise a challenge, you are not allowed to use [] Note: you don't need to use return. Hint