Created
April 30, 2021 03:37
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| arr = ['G','B','R','G','B','G','R'] | |
| ridx=0 | |
| bidx=len(arr)-1 | |
| i=0 | |
| while(i<bidx): | |
| if(arr[i] == 'R'): | |
| arr[i],arr[ridx] = arr[ridx],arr[i] | |
| ridx += 1 | |
| i = i+1 | |
| elif (arr[i] == 'B'): | |
| arr[i],arr[bidx] = arr[bidx], arr[i] | |
| bidx -= 1 | |
| else: | |
| i=i+1 | |
| print(arr) | |
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