给定一个包含单词和空格的字符串,我们的任务是通过仅遍历字符串一次将所有空格移到字符串的开头。我们将使用List Comprehension在Python中快速解决此问题。
Input: string = "python program" Output: string= “ pythonprogram"
Step1: input a string with word and space. Step2: Traverse the input string and using list comprehension create a string without any space. Step 3: Then calculate a number of spaces. Step 4: Next create a final string with spaces. Step 5: Then concatenate string having no spaces. Step 6: Display string.
# Function to move spaces to front of string # in single traversal in Python def frontstringmove(str): noSp = [i for i in str if i!=' '] space= len(str) - len(noSp) result = ' '*space result = '"'+result + ''.join(noSp)+'" print ("Final Result ::>",result) # Driver program if __name__ == "__main__": str = input("Enter String") frontstringmove(str)
输出结果
Enter String python program Final Result ::>" pythonprogram"